Detailed Specs Comparison

Lenovo ThinkCentre M90a Gen 2 vs. Dell Precision 3650 Tower Workstation

Here is a side by side comparison between Lenovo ThinkCentre M90a Gen 2 and Dell Precision 3650 Tower Workstation specs including price, processors, memory, graphics, storage, ports, and more.

BY Evan Forrest February 25, 2022

Specs Comparison

	Compare With Please enter device name or part of it Lenovo ThinkCentre M90a Gen 2 See at Amazon	Compare With Please enter device name or part of it Dell Precision 3650 Tower Workstation See at Amazon
Key Features
What's new	Up to 23.8” FHD Touch Display with optional PrivacyGuard. Intel® Q570 Chipset. Supports 10th Generation Intel® Comet Lake Desktop Processors. Supports 11th Generation Intel® Rocket Lake Desktop Processors. Up to 11th Gen Intel® Core™ i9-11900 8C/16T, 2.50 → 5.20 GHz, 16MB SmartCache, 65W TDP. Up to AMD Radeon™ 630 with 2GB GDDR5 VRAM. Up to 1TB NVMe PCIe Gen 4.0 x4 SSD. Up to 2 x 2TB 2.5” HDD. Up to 64GB dual-channel 3200MHz DDR4 Memory. More Features 2 x 3W stereo speakers with Dolby® Atmos™ support. Up to Wi-Fi 6 and Bluetooth 5.2. Optional 5.0-megapixel front-facing camera. Optional Windows Hello IR camera. MIL-STD-810H military test passed. Toolless cover and stand assembly/removal.	Intel® W580 Chipset Supports 10th and 11th Gen Intel Core Processors. Up to 125W Intel® Core™ i9-11900K (8 cores/16 threads, up to 5.30 GHz). Up to 125W Intel® Xeon® W-1390P (8 cores/16 threads, up to 5.40 GHz). Up to NVIDIA® Quadro® RTX A5000 with 24GB GDDR6X. Up to AMD® Radeon™ Pro W5700 with 8GB GDDR6. Up to 64GB 3200MHz ECC or Non-ECC dual-channel DDR4 memory. Up to 128GB 2933MHz ECC or Non-ECC dual-channel DD4 memory. Up to 3 x 2TB PCIe Gen 4 NVMe SSD. Up to 1000W 80 Plus Gold with 90% Efficiency.

Availability	Lenovo ThinkCentre M90a Gen 2	Dell Precision 3650 Tower Workstation
Released	2021	2021
Release Info	Announced on October 12, 2021.	Announced on May 10, 2021.
Pricing		Starting at $1,239.00
Applicable Models	2021 Lenovo ThinkCentre M90a Lenovo ThinkCentre M90a Gen 2 Lenovo ThinkCentre M90a AIO Gen 2 Lenovo ThinkCentre M90a All-in-One Gen 2
Generations	2021 Lenovo ThinkCentre M90a Gen 2 Current 2020 Lenovo ThinkCentre M90a Compare

Lenovo ThinkCentre M90a All-in-One Gen 2 Price
	Lenovo ThinkCentre M90a \| Business All in One Desktop \| 23.8" FHD IPS Display \| 32GB RAM \| 2TB Storage (1TB SSD with 1TB HDD) \| Intel Core i5 Processor \| FHD Webcome \| Wi-Fi 6 \| Win 11 Pro By Lenovo $758.88 Was: $799.99	See at Amazon
	Lenovo ThinkCentre M90a All-in-one Business Computer, 23.8" FHD IPS Display, Intel Core i5 Processor, 16GB RAM, 512GB PCIe SSD, Wi-Fi, Webcam, USB-C, SD Card Reader, Windows 11 Pro By Lenovo $669.99	See at Amazon
	Lenovo ThinkCentre M90a 23.8" FHD AIO Business All-in-One Desktop, Intel Octa-Core i7-10700 up to 4.8GHz, 16GB DDR4 RAM, 512GB PCIe SSD, WiFi Adapter, Ethernet, Windows 11 Pro, BROAG Mouse Pad By Lenovo $699.00	See at Amazon
Dell Precision 3650 Tower Workstation Price
	Dell Precision 3650 Desktop Tower Workstation Intel Core i7-11700 (8-Core) 32GB RAM 512GB PCIe SSD Dual (2) NVIDIA Quadro T1000 Windows 10 PRO By Dell $1,050.00	See at Amazon
	Dell Precision 3650 Desktop Tower Workstation Intel Core i7-11700 (8-Core) 64GB RAM 2TB PCIe SSD NVIDIA Quadro T1000 Windows 10 PRO (Renewed) By Dell $1,179.00	See at Amazon
	Dell Precision 3000 3650 Workstation - Intel Core i7 Octa-core (8 Core) i7-10700 10th Gen 2.90 GHz - 16 GB DDR4 SDRAM RAM - 512 GB SSD - Tower By Dell $1,195.00	See at Amazon

Display	Lenovo ThinkCentre M90a Gen 2	Dell Precision 3650 Tower Workstation
Size	23.8 Inches
Info	23.8” FHD Display 250 nits, non-touch. 23.8” FHD PrivacyGuard Display 350 nits, non-touch. 23.8” FHD Touch Display 250 nits, multi-touch. All Configurations 1920 x 1080, 16:9, IPS panel, 1000:1 contrast ratio, +/- 89° viewing angle, borderless design, low blue light mode, anti-glare surface.

Exterior	Lenovo ThinkCentre M90a Gen 2	Dell Precision 3650 Tower Workstation
Size Comparison
Dimensions	541 x 200 x 414.2-494.2 mm (21.3 x 7.9 x 16.3-19.5 inches) Models (with full function monitor stand, with ODD, with PrivacyGuard, with camera) 541 x 200 x 414.2-494.2 mm (21.3 x 7.9 x 16.3-19.5 inches) Models (with full function monitor stand, with ODD, without PrivacyGuard, with camera) 541 x 200 x 414.2-494.2 mm (21.3 x 7.9 x 16.3-19.5 inches) Models (with full function monitor stand, without ODD, with PrivacyGuard, with camera) 541 x 200 x 414.2-494.2 mm (21.3 x 7.9 x 16.3-19.5 inches) Models (with full function monitor stand, without ODD, without PrivacyGuard, with camera) Lowest in flat mode: 541 x 312.8 x 227.4 mm (21.3 x 12.3 x 9.0 inches) Highest in vertical mode: 541 x 232.7 x 467.7 mm (21.3 x 9.2 x 18.4 inches) Models (with UltraFlex IV stand, with ODD, without PrivacyGuard, with camera) Lowest in flat mode: 541 x 312.8 x 227.4 mm (21.3 x 12.3 x 9.0 inches) Highest in vertical mode: 541 x 232.7 x 467.7 mm (21.3 x 9.2 x 18.4 inches) Models (with UltraFlex IV stand, without ODD, without PrivacyGuard, with camera) 541 x 61.3 x 340.5 mm (21.3 x 2.4 x 13.4 inches) Models (without stand, with ODD, with PrivacyGuard, with camera) 541 x 57.8 x 340.5 mm (21.3 x 2.3 x 13.4 inches) Models (without stand, with ODD, without PrivacyGuard, with camera) 541 x 49.5 x 340.5 mm (21.3 x 1.9 x 13.4 inches) Models (without stand, without ODD, with PrivacyGuard, with camera) 541 x 46 x 340.5 mm (21.3 x 1.8 x 13.4 inches) Models (without stand, without ODD, without PrivacyGuard, with camera)	13.6” x 13.18” x 6.95” (345 x 335 x 176.6 mm)
Weight	8.71 kg (19.2 lbs) Models (with full function monitor stand, with ODD, with PrivacyGuard, with camera) 7.84 kg (17.3 lbs) Models (with full function monitor stand, with ODD, without PrivacyGuard, with camera) 8.39 kg (18.5 lbs) Models (with full function monitor stand, without ODD, with PrivacyGuard, with camera) 7.51 kg (16.6 lbs) Models (with full function monitor stand, without ODD, without PrivacyGuard, with camera) 8.58 kg (18.9 lbs) Models (with UltraFlex IV stand, with ODD, without PrivacyGuard, with camera) 8.26 kg (18.2 lbs) Models (with UltraFlex IV stand, without ODD, without PrivacyGuard, with camera) 6.45 kg (14.2 lbs) Models (without stand, with ODD, with PrivacyGuard, with camera) 5.57 kg (12.3 lbs) Models (without stand, with ODD, without PrivacyGuard, with camera) 6.13 kg (13.5 lbs) Models (without stand, without ODD, with PrivacyGuard, with camera) 5.25 kg (11.6 lbs) Models (without stand, without ODD, without PrivacyGuard, with camera)	18.74 ~ 22.53 lbs. (8.50 ~ 10.22 kg)
Colors	Black	Black
Keyboard and Trackpad	Keyboard Lenovo Calliope Keyboard (USB connector), black Lenovo Calliope Wireless Keyboard (2.4GHz via USB receiver), black Lenovo Traditional Keyboard (USB connector), black No keyboard Mouse Lenovo Calliope Mouse (USB connector), black Lenovo Calliope Wireless Mouse (2.4GHz via USB receiver), black Lenovo Fingerprint Mouse (USB connector), Windows Hello support, black No mouse	Keyboard Dell KB813 Smart Card Keyboard (US) Dell KB216 Wired Keyboard English No Keyboard Mouse Dell Wired Mouse MS3220 - Black Dell Optical Mouse - MS116 (Black) Dell Wired Mouse with Fingerprint Reader No Mouse
Ports	Right 2 x USB-A USB 3.2 Gen 2 (10 Gbps). 1 x USB-C USB 3.2 Gen 2 (10Gbps) with 15W (5W/3A) charging. 1 x Headset jack 3.5mm combo jack. 1 x Optional SD Card Reader Rear 4 x USB-A 3 x USB 3.2 Gen 1 (5 Gbps). 1 x USB 3.2 Gen 1 (5 Gbps) with Smart Power On. 1 x DisplayPort 1.4b 1 x RJ-45 10/100/1000 Gigabit Ethernet. 1 x Power connector 1 x Kensington Security Slot 1 x Optional Serial port 1 x Optional HDMI 2.1	Front \| Standard 3 x USB-A 2 x USB 2.0 (480 Mbps). 1 x USB 3.2 Gen 1 (5 Gbps) with Powershare. 1 x USB-C USB 3.2 Gen 2 (10 Gbps) 1 x Universal Audio Jack Front \| Advanced 3 x USB-A 1 x USB 3.2 Gen 1 (5 Gbps). 1 x USB 3.2 Gen 2 (10 Gbps). 1 x USB 3.2 Gen 2 (10 Gbps) with powershare. 1 x USB-C USB 3.2 Gen 2x2 (20 Gbps) 1 x SD Card Reader v4.0 1 x Universal Audio Jack Rear 5 x USB-A 2 x USB 2.0 (480 Mbps) with Smart Power On. 2 x USB 3.2 Gen 1 (5 Gbps). 1 x USB 3.2 Gen 2 (10 Gbps). 2 x DisplayPort DisplayPort 1.4 supports 4K@120Hz. 1 x RJ-45 Gigabit Ethernet. 1 x Audio Jack Re-tasking Line out/Line in audio port. 2 x PS/2 1 x Optional Port VGA, DP++ 1.4a, HDMI 2.0, or USB-C with DP-Alt-mode. 1 x Optional RJ45 Network Connector (2.5 GHz) 1 x Kensington Lock Slot 1 x Power Connection

Chasis	Lenovo ThinkCentre M90a Gen 2	Dell Precision 3650 Tower Workstation
Form Factor	All-in-One	Mid Tower
Power Supply	150W Power Adapter 89% efficiency with autosensing, for integrated graphics models. 170W Power Adapter 89% efficiency with autosensing, for discrete graphics models.	300W 80+ Gold 90% Efficiency 460W 80+ Gold 90% Efficiency 550W 80+ Gold 90% Efficiency 1000W 80+ Gold 90% Efficiency
Bays	2 x 2.5" disk bay 2nd 2.5" HDD occupies ODD bay. 1 x slim ODD bay
Optical Drives	Optional slim optical disc drive	8x DVD+/-RW 9.5mm Optical Disk Drive 8x DVD-ROM 9.5mm Optical Disk Drive
Chasis Information	Buttons Power button PrivacyGuard on/off button PrivacyGuard model only. Microphone mute button Ease of Use Toolless cover and stand assembly/removal Stand Full function monitor stand, supports -5° to +30° tilt, up to 80mm lift UltraFlex IV stand, supports -5° to +70° tilt, up to 164mm lift (flat mode) / up to 115mm lift (vertical mode) No stand Mounting Supports VESA mount 100mm Mil-Spec Test MIL-STD-810H military test passed Low Pressure [Altitude], High Temperature, Low Temperature, Temperature Shock, Humidity, Sand and Dust, Vibration, Shock, Fungus, Solar Radiation.

Internal Specs	Lenovo ThinkCentre M90a Gen 2	Dell Precision 3650 Tower Workstation
Chipset	Intel® Q570 Chipset	Intel® W580 Chipset
Processor	10th Gen Intel® Celeron® G5905 2C/2T, 3.50 GHz, 4MB SmartCache, 58W 10th Gen Intel® Celeron® G5925 2C/2T, 3.60 GHz, 4MB SmartCache, 58W 10th Gen Intel® Pentium® Gold G6405 2C/4T, 4.10 GHz, 4MB SmartCache, 58W 10th Gen Intel® Pentium® Gold G6505 2C/4T, 4.20 GHz, 4MB SmartCache, 58W 10th Gen Intel® Pentium® Gold G6605 2C/4T, 4.30 GHz, 4MB SmartCache, 58W 10th Gen Intel® Core™ i3-10105 4C/8T, 3.70 → 4.40 GHz, 6MB SmartCache, 65W 10th Gen Intel® Core™ i3-10305 4C/8T, 3.80 → 4.50 GHz, 8MB SmartCache, 65W 10th Gen Intel® Core™ i3-10325 4C/8T, 3.90 → 4.70 GHz, 8MB SmartCache, 65W 11th Gen Intel® Core™ i5-11400 6C/12T, 2.60 → 4.40 GHz, 12MB SmartCache, 65W 11th Gen Intel® Core™ i5-11500 6C/12T, 2.70 → 4.60 GHz, 12MB SmartCache, 65W 11th Gen Intel® Core™ i5-11600 6C/12T, 2.80 → 4.80 GHz, 12MB SmartCache, 65W 11th Gen Intel® Core™ i7-11700 8C/16T, 2.50 → 4.90 GHz, 16MB SmartCache, 65W 11th Gen Intel® Core™ i9-11900 8C/16T, 2.50 → 5.20 GHz, 16MB SmartCache, 65W	10th Gen Intel® Core™ i3-10100 4C/8T, 3.60 → 4.30 GHz, 6MB SmartCache, 65W 10th Gen Intel® Core™ i3-10105 4C/8T, 3.70 → 4.40 GHz, 6MB SmartCache, 65W 10th Gen Intel® Core™ i5-10500 6C/12T, 3.10 → 4.50 GHz, 12MB SmartCache, 65W 10th Gen Intel® Core™ i5-10600 6C/12T, 3.30 → 4.80 GHz, 12MB SmartCache, 65W 10th Gen Intel® Core™ i5-10600K 6C/12T, 4.10 → 4.80 GHz, 12MB SmartCache, 125W 10th Gen Intel® Core™ i7-10700 8C/16T, 2.90 → 4.80 GHz, 16MB SmartCache, 65W 10th Gen Intel® Core™ i7-10700K 8C/16T, 3.80 → 5.10 GHz, 16MB SmartCache, 125W 10th Gen Intel® Core™ i9-10900 10C/20T, 2.80 → 5.20 GHz, 20MB SmartCache, 65W 10th Gen Intel® Core™ i9-10900K 10C/20T, 3.70 → 5.30 GHz, 20MB SmartCache, 125W 10th Gen Intel® Xeon® W-1250 6C/12T, 3.30 → 4.70 GHz, 12MB SmartCache, 80W 10th Gen Intel® Xeon® W-1250P 6C/12T, 4.10 → 4.80 GHz, 12MB SmartCache, 125W 10th Gen Intel® Xeon® W-1270 8C/16T, 3.40 → 5.00 GHz, 16MB SmartCache, 80W 10th Gen Intel® Xeon® W-1270P 8C/16T, 3.80 → 5.10 GHz, 16MB SmartCache, 125W 10th Gen Intel® Xeon® W-1290 10C/20T, 3.20 → 5.20 GHz, 20MB SmartCache, 80W 10th Gen Intel® Xeon® W-1290P 10C/20T, 3.70 → 5.30 GHz, 20MB SmartCache, 125W 11th Gen Intel® Core™ i5-11500 6C/12T, 2.70 → 4.60 GHz, 12MB SmartCache, 65W 11th Gen Intel® Core™ i5-11600 6C/12T, 2.80 → 4.80 GHz, 12MB SmartCache, 65W 11th Gen Intel® Core™ i5-11600K 6C/12T, 3.90 → 4.90 GHz, 12MB SmartCache, 125W 11th Gen Intel® Core™ i7-11700 8C/16T, 2.50 → 4.90 GHz, 16MB SmartCache, 65W 11th Gen Intel® Core™ i7-11700K 8C/16T, 3.60 → 5.00 GHz, 16MB SmartCache, 125W 11th Gen Intel® Core™ i9-11900 8C/16T, 2.50 → 5.20 GHz, 16MB SmartCache, 65W 11th Gen Intel® Core™ i9-11900K 8C/16T, 3.50 → 5.30 GHz, 16MB SmartCache, 125W 11th Gen Intel® Xeon® W-1350 6C/12T, 3.30 → 5.00 GHz, 12MB SmartCache, 80W 11th Gen Intel® Xeon® W-1350P 6C/12T, 4.00 → 5.10 GHz, 12MB SmartCache, 125W 11th Gen Intel® Xeon® W-1370 8C/16T, 2.90 → 5.10 GHz, 16MB SmartCache, 80W 11th Gen Intel® Xeon® W-1370P 8C/16T, 3.60 → 5.20 GHz, 16MB SmartCache, 125W 11th Gen Intel® Xeon® W-1390 8C/16T, 2.80 → 5.20 GHz, 16MB SmartCache, 80W 11th Gen Intel® Xeon® W-1390P 8C/16T, 3.50 → 5.30 GHz, 16MB SmartCache, 125W
Integrated Graphics	10th Gen Intel® Celeron® G5905 Intel® UHD Graphics 610 350 → 1050 MHz 10th Gen Intel® Celeron® G5925 Intel® UHD Graphics 610 350 → 1050 MHz 10th Gen Intel® Pentium® Gold G6405 Intel® UHD Graphics 610 350 → 1050 MHz 10th Gen Intel® Pentium® Gold G6505 Intel® UHD Graphics 630 350 → 1100 MHz 10th Gen Intel® Pentium® Gold G6605 Intel® UHD Graphics 630 350 → 1100 MHz 10th Gen Intel® Core™ i3-10105 Intel® UHD Graphics 630 23 Execution Units, 350 → 1100 MHz 10th Gen Intel® Core™ i3-10305 Intel® UHD Graphics 630 23 Execution Units, 350 → 1150 MHz 10th Gen Intel® Core™ i3-10325 Intel® UHD Graphics 630 23 Execution Units, 350 → 1150 MHz 11th Gen Intel® Core™ i5-11400 Intel® UHD Graphics 730 24 Execution Units, 350 → 1300 MHz 11th Gen Intel® Core™ i5-11500 Intel® UHD Graphics 750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Core™ i5-11600 Intel® UHD Graphics 750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Core™ i7-11700 Intel® UHD Graphics 750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Core™ i9-11900 Intel® UHD Graphics 750 32 Execution Units, 350 → 1300 MHz	10th Gen Intel® Core™ i3-10100 Intel® UHD Graphics 630 23 Execution Units, 350 → 1100 MHz 10th Gen Intel® Core™ i3-10105 Intel® UHD Graphics 630 23 Execution Units, 350 → 1100 MHz 10th Gen Intel® Core™ i5-10500 Intel® UHD Graphics 630 24 Execution Units, 350 → 1150 MHz 10th Gen Intel® Core™ i5-10600 Intel® UHD Graphics 630 24 Execution Units, 350 → 1200 MHz 10th Gen Intel® Core™ i5-10600K Intel® UHD Graphics 630 24 Execution Units, 350 → 1100 MHz 10th Gen Intel® Core™ i7-10700 Intel® UHD Graphics 630 24 Execution Units, 350 → 1200 MHz 10th Gen Intel® Core™ i7-10700K Intel® UHD Graphics 630 24 Execution Units, 350 → 1200 MHz 10th Gen Intel® Core™ i9-10900 Intel® UHD Graphics 630 24 Execution Units, 350 → 1200 MHz 10th Gen Intel® Core™ i9-10900K Intel® UHD Graphics 630 24 Execution Units, 350 → 1200 MHz 10th Gen Intel® Xeon® W-1250 Intel® UHD Graphics P630 24 Execution Units, 350 → 1200 MHz 10th Gen Intel® Xeon® W-1250P Intel® UHD Graphics P630 24 Execution Units, 350 → 1200 MHz 10th Gen Intel® Xeon® W-1270 Intel® UHD Graphics P630 24 Execution Units, 350 → 1200 MHz 10th Gen Intel® Xeon® W-1270P Intel® UHD Graphics P630 24 Execution Units, 350 → 1200 MHz 10th Gen Intel® Xeon® W-1290 Intel® UHD Graphics P630 24 Execution Units, 350 → 1200 MHz 10th Gen Intel® Xeon® W-1290P Intel® UHD Graphics P630 24 Execution Units, 350 → 1200 MHz 11th Gen Intel® Core™ i5-11500 Intel® UHD Graphics 750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Core™ i5-11600 Intel® UHD Graphics 750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Core™ i5-11600K Intel® UHD Graphics 750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Core™ i7-11700 Intel® UHD Graphics 750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Core™ i7-11700K Intel® UHD Graphics 750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Core™ i9-11900 Intel® UHD Graphics 750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Core™ i9-11900K Intel® UHD Graphics 750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Xeon® W-1350 Intel® UHD Graphics P750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Xeon® W-1350P Intel® UHD Graphics P750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Xeon® W-1370 Intel® UHD Graphics P750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Xeon® W-1370P Intel® UHD Graphics P750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Xeon® W-1390 Intel® UHD Graphics P750 32 Execution Units, 350 → 1300 MHz 11th Gen Intel® Xeon® W-1390P Intel® UHD Graphics P750 32 Execution Units, 350 → 1300 MHz
Discrete Graphics	Optional AMD Radeon™ 630 with 2GB GDDR5 VRAM	NVIDIA® Quadro® T400 - 2GB GDDR6 3 x mini DisplayPort ports T600 - 4GB GDDR6 4 x mini DisplayPort ports T1000 - 4GB GDDR6X 4 x mini DisplayPort ports P400 - 2GB GDDR5 3 x mini DisplayPort ports P620 - 2GB GDDR5 4 x mini DisplayPort ports P1000 - 4GB GDDR5 4 x mini DisplayPort ports P2200 - 5GB GDDR5X 4 x DisplayPort 1.4 ports RTX 4000 - 8GB GDDR6 3 x DisplayPort 1.4 ports 1 x USB-C port RTX 5000 - 16GB GDDR6 4 x DisplayPort 1.4 ports 1 x USB-C port RTX A2000 - 6GB GDDR6X 4 x mini DisplayPort ports RTX A4000 - 16GB GDDR6X 4 x DisplayPort 1.4a ports RTX A5000 - 24GB GDDR6X 4 x DisplayPort 1.4a ports AMD® Radeon™ Pro W3200 - 4GB GDDR6 4 x mini DisplayPort ports W5500 - 8GB GDDR6 4 x DisplayPort 1.4 ports W5700 - 8GB GDDR6 5 x mini DisplayPort ports 1 x USB-C port
Memory	4GB 8GB 16GB 32GB 64GB Memory Slots: 2 x SO-DIMM slots Memory Type: Single or Dual Channel Non-ECC DDR4 Memory Memory Speed: 2666 MHz for 10th Gen Intel CPU 3200 MHz for 11th Gen Intel CPU Memory Per Slot: 4GB 8GB 16GB 32GB	8GB 16GB 32GB 64GB 128GB Memory Slots: 4 x DIMM slots Memory Type: ECC and Non-ECC Dual-Channel DDR4 Memory. Memory Speed: 2666 MHz For 10th Generation Intel Core i3/i5/Xeon W-1250/W-1250P processors. 2933 MHz For 10th Generation Intel Core i7/i9/Xeon W-1270/W-1270P/W1290/W1290P processors. 3200 MHz For 11th Generation Intel Core i5/i7/i9/Xeon W-1350/W-1350P/W-1370/W-1370P/W1390/W1390P processors. Memory Size per Slot: 8GB 16GB 32GB
Storage	128GB 256GB 512GB 1TB M.2 PCIe 3.0 x 4 or 4.0 x 4 NVME SSD. 1TB 2TB 5.4K or 7.2K rpm 2.5” SATA HDD.	256GB 512GB 1TB 2TB M.2 PCIe Gen 3 x4 or Gen 4 x4 NVME SSD 500GB 1TB 2TB 5400 rpm or 7200 rpm 2.5" SATA Hard Drive 1TB 2TB 4TB 5400 rpm or 7200 rpm 3.5" SATA Hard Drive Storage Controller: Intel® Rapid Storage Controller 12.0 Supporting SATA 6Gb/s and host based RAID 0/1/5/10.
Slots	Expansion Slots No Expansion Slot SATA 2 x SATA slots For 2.5-inch HDD/SSD/ODD. M.2 1 x M.2 2230 slot For WiFi and Bluetooth combo card 1 x M.2 2242/2080 slot PCIe 3.0 x 4 SSD	Expansion Slots 1 x PCIe x16 slot PCIe Gen 4 x16, Full-height 1 x PCIe x4 slot PCIe Gen 3 x4, Full-height 1 x PCIe-32 slot Full-height SATA 4 x SATA slots For 2.5-inch HDD/SSD, and slim Optical Drive. M.2 1 x M.2 2230 slot For WiFi and Bluetooth combo card 3 x M.2 2280 slot For SSD/Intel Optane.

Connectivity	Lenovo ThinkCentre M90a Gen 2	Dell Precision 3650 Tower Workstation
Wi-Fi	Realtek RTL8822CE, 802.11ac Dual Band 2x2 Wi-Fi® + Bluetooth 5.0, M.2 card Intel Wireless-AC 9560, 802.11ac Dual Band 2x2 Wi-Fi + Bluetooth 5.1, Intel vPro technology support, M.2 card Intel Wireless-AC 9560, 802.11ac Dual Band 2x2 Wi-Fi + Bluetooth 5.1, M.2 card Intel Wi-Fi 6 AX201, 802.11ax 2x2 Wi-Fi + Bluetooth 5.2, Intel vPro technology support, M.2 Card Intel Wi-Fi 6 AX201, 802.11ax 2x2 Wi-Fi + Bluetooth 5.2, M.2 Card No WLAN and Bluetooth	Qualcomm QCA61x4a Up to 867 Mbps Dual band 2.4 GHz/5 GHz WiFi-5 (802.11ac) Bluetooth 5.0 Intel AX210 Up to 2402 Mbps Triple band 2.4 GHz/5 GHz/6 GHz WiFi-6 (802.11ax) Bluetooth 5.1 No Wireless LAN Card
Bluetooth	Bluetooth 5.0 Bluetooth 5.1 Bluetooth 5.2 Optional.	Bluetooth 5.0 Bluetooth 5.2 Optional
Ethernet	Intel I219-LM Gigabit Ethernet controller 10/100/1000 Mbps, support Wake-on-LAN.	Gigabit Ethernet controller Speed: 10/100/1000 Mbps. 2.5GbE Ethernet controller Speed: 10/100/1000/2500 Mbps.

Software	Lenovo ThinkCentre M90a Gen 2	Dell Precision 3650 Tower Workstation
OS	Windows 10 Home \| Pro \| IoT Enterprise Ubuntu Linux No operating system	Windows 11 Home, 64-bit Windows 11 Pro, 64-bit Windows 11 Pro National Academic, 64-bit Windows 11 Pro for Workstations, 64-bit Windows 10 Home, 64-bit Windows 10 Pro, 64-bit Windows 10 IoT Enterprise 2019 LTSC (OEM only) Windows 10 CMIT Government Edition, 64-bit (China only) Red Hate Enterprise Linux 8.4 Ubuntu 20.04 LTS, 64-bit Kylin v10.1
Built-in Apps		Dell Optimizer for Precision Microsoft Office 30 Day Trial

Camera & Audio	Lenovo ThinkCentre M90a Gen 2	Dell Precision 3650 Tower Workstation
Camera	Optional Front-facing camera. 5.0-megapixel, with ThinkShutter (physical switch on/off). Optional Windows Hello IR support.
Audio	High Definition (HD) Audio, Realtek® ALC233 codec 2 x 3W stereo speakers. Dolby® Atmos® Speaker System. Dual array microphone.	One 2W Speaker (optional) Audio controller Realtek ALC3246 4 Channel High Definition Audio 24-bit DAC (Digital-to-Analog) and ADC (Analog-to-Digital) External Ports 1 x Universal Audio Jack Front 1 x Audio port Line-out audio port with re-tasking to Line-in (Rear).

Misc	Lenovo ThinkCentre M90a Gen 2	Dell Precision 3650 Tower Workstation
Sensors	IR Camera
Security	Security Chip Discrete TPM 2.0, TCG certified Physical Locks Kensington® Security Slot Chassis Intrusion Switch Chassis intrusion switch No chassis intrusion switch Fingerprint Reader Touch style fingerprint reader on mouse No fingerprint reader Other Security Optional ThinkShutter camera cover BIOS Security Administrator password Power-on password Hard disk password Boot sequence control Boot without keyboard and mouse Self-healing BIOS Smart USB protection (allows keyboard/mouse only, blocks all storage devices) Individual USB port disablement
Warranty	1-year limited onsite service 3-year limited onsite service No base warranty	3-Year Basic Onsite Service

Lenovo ThinkCentre M90a Gen 2 vs. Dell Precision 3650 Tower Workstation

The Lenovo ThinkCentre M90a Gen 2 and the Dell Precision 3650 Tower Workstation were released in the same year, 2021. The Lenovo ThinkCentre M90a Gen 2 has an all-in-one form factor that combines all components and a built-in monitor into one package. The Dell Precision 3650 Tower Workstation has a mini tower form factor that can fit a micro ATX and Mini ITX motherboard, a few hard disk drives, and a single full-height graphics card.

Processor

The Central Processing Unit (CPU) is like the brains of your desktop computer. Its performance determines how fast and responsive your PC is. Generally, a processor with newer architecture, more CPU cores, higher TDP (measured in W), and faster clock speed (measured in GHz) tends to be more expensive and run faster than others with older architecture, fewer CPU cores, lower TDP, and lower clock speed.

For Lenovo ThinkCentre M90a Gen 2, you have options to configure it with a 58W 10th Generation Intel Comet Lake dual-core Intel Celeron G5905 up to a 65W 8-core Intel Core i9-11900 with a boost speed up to 5.20 GHz.

While Dell Precision 3650 Tower Workstation has configurations with a 65W 10th Generation Intel Comet Lake quad-core Intel Core i3-10100 up to a 125W 8-core Intel Xeon W-1390P with a boost speed up to 5.30 GHz.

Memory

The Random Access Memory or RAM is the super-fast and temporary storage used to handle all active tasks, apps, and games that will go away when your PC turns off. The more memory your PC has, the better multitasking your PC can handle without having to reload data from slower permanent storage that includes the hard disk drive or solid-state drive.

Fortunately, both PC allows you to upgrade later if you are unsatisfied with the amount of memory on your PC. The Lenovo ThinkCentre M90a Gen 2 has two RAM slots that support up to 64GB of 3200MHz dual-channel DDR4 memory. On the other hand, the Dell Precision 3650 Tower Workstation has four RAM slots that you can upgrade up to 64GB of 3200MHz or 128GB of 2933MHz ECC or non-ECC dual-channel DDR4 memory.

Ports

Computer ports are the interface for connecting your PC to its peripheral devices or other PCs. The most common peripherals are keyboard, mouse, monitor, flash drive, speaker, and printer. Most of them use Universal Serial Bus (USB) as their connection to your computer. So the PC with more USB ports can connect to more peripherals at the same time.

There is a total number of 7 USB ports available on the Lenovo ThinkCentre M90a Gen 2, two less than the Dell Precision 3650 Tower Workstation that has 9 USB ports. On top of the number of USB ports, the type and version of each USB port are also necessary for determining how fast it is.

The Lenovo ThinkCentre M90a Gen 2 has six USB Type-A ports and one USB Type-C port. It has four ports that support USB 3.2 Gen 1 (5 Gbps) and three ports that support USB 3.2 Gen 2 (10 Gbps).

For Dell Precision 3650 Tower Workstation, it has eight USB Type-A ports and one USB Type-C port. The PC has four ports that support USB 2.0 (480 Mbps), three ports that support USB 3.2 Gen 1 (5 Gbps), and two ports that support USB 3.2 Gen 2 (10 Gbps).

Pricing

Lenovo ThinkCentre M90a All-in-One Gen 2 Price
	Lenovo ThinkCentre M90a \| Business All in One Desktop \| 23.8" FHD IPS Display \| 32GB RAM \| 2TB Storage (1TB SSD with 1TB HDD) \| Intel Core i5 Processor \| FHD Webcome \| Wi-Fi 6 \| Win 11 Pro By Lenovo $758.88 Was: $799.99	See at Amazon
	Lenovo ThinkCentre M90a All-in-one Business Computer, 23.8" FHD IPS Display, Intel Core i5 Processor, 16GB RAM, 512GB PCIe SSD, Wi-Fi, Webcam, USB-C, SD Card Reader, Windows 11 Pro By Lenovo $669.99	See at Amazon
	Lenovo ThinkCentre M90a 23.8" FHD AIO Business All-in-One Desktop, Intel Octa-Core i7-10700 up to 4.8GHz, 16GB DDR4 RAM, 512GB PCIe SSD, WiFi Adapter, Ethernet, Windows 11 Pro, BROAG Mouse Pad By Lenovo $699.00	See at Amazon
Dell Precision 3650 Tower Workstation Price
	Dell Precision 3650 Desktop Tower Workstation Intel Core i7-11700 (8-Core) 32GB RAM 512GB PCIe SSD Dual (2) NVIDIA Quadro T1000 Windows 10 PRO By Dell $1,050.00	See at Amazon
	Dell Precision 3650 Desktop Tower Workstation Intel Core i7-11700 (8-Core) 64GB RAM 2TB PCIe SSD NVIDIA Quadro T1000 Windows 10 PRO (Renewed) By Dell $1,179.00	See at Amazon
	Dell Precision 3000 3650 Workstation - Intel Core i7 Octa-core (8 Core) i7-10700 10th Gen 2.90 GHz - 16 GB DDR4 SDRAM RAM - 512 GB SSD - Tower By Dell $1,195.00	See at Amazon