Detailed Specs Comparison

Dell Inspiron 3891 Desktop vs. Dell Optiplex 7090 Ultra

Here is a side by side comparison between Dell Inspiron 3891 Desktop and Dell Optiplex 7090 Ultra specs including price, processors, memory, graphics, storage, ports, and more.

Specs Comparison

Dell Inspiron 3891 Desktop image
Dell Inspiron 3891 Desktop
Dell Optiplex 7090 Ultra image
Dell Optiplex 7090 Ultra

Key Features

What's new
  • Intel B560 Chipset
  • Supports 10th and 11th Gen Intel Processors
  • Up to 65W Intel® Core™ i7-11700 (8C/16T, Up to 4.90 GHz)
  • Up to 64GB 2933MH dual-channel DDR4 memory
  • Up to NVIDIA® GeForce® GTX 1660 SUPER with 6GB of GDDR6
  • Up to 360W 80+ Bronze PSU
  • Up to Wi-Fi 6 and Bluetooth 5.1
  • More Features
    • Optional SD Card Reader 3.0.
    • Up to two display outputs (HDMI + VGA).
  • Intel Tiger Lake PCH-LP Chipset.
  • 11th Gen Intel Tiger Lake Processors.
  • Up to Intel® Core™ i7-1185G7 (4C/8T, 3.00 → 4.80 GHz, 12MB SmartCache, 28W)
  • Up to 64GB 3200 MHz dual-channel DDR4 memory
  • Up to 2 x 2TB PCIe Gen 4 x4 NVMe SSD.
  • Up to 2TB 2.5" HDD.
  • 90W Power Adapter.
  • Up to Wi-Fi 6 and Bluetooth 5
  • More Features
    • Up to three display outputs (2 x USB-C Alt-Mode + DP).

Availability

Dell Inspiron 3891 DesktopDell Optiplex 7090 Ultra
Released20212021
Release InfoAvailable in October 2021Announced on May 11, 2021.
PricingStarting from $429.99
i3-10105 iGPU ODD 8GB 1TB 3.5” HDD Wi-Fi 5
  • $1,138.57
    i5-1115G4 4GB 500GB 2.5” Wi-Fi 5
  • $1,398.57
    i5-1145G7 8GB 256GB M.2 Wi-Fi 6
  • $1,470.00
    i5-1145G7 16GB 256GB M.2 Wi-Fi 6
  • $1,712.86
    i5-1185G7 16GB 256GB M.2 Wi-Fi 6
  • $1,855.00
    i5-1145G7 4GB 128GB M.2 Wi-Fi 6 C2422HE Monitor
Generations
Dell Inspiron 3891 Desktop Price
Dell Inspiron 3891 Business Desktop Computer, 10th Gen Intel Core i5-10400, Windows 10 Pro, 16GB RAM, 512GB SSD, Intel UHD Graphics 630, Wi-Fi 6, Bluetooth
Dell Inspiron 3891 Business Desktop Computer, 10th Gen Intel Core i5-10400, Windows 10 Pro, 16GB RAM, 512GB SSD, Intel UHD Graphics 630, Wi-Fi 6, Bluetooth
By Dell
$750.00
Dell Inspiron 3891 Compact Tower Desktop - Intel Core i5, 16GB DDR4 RAM, 256GB SSD, 1TB SATA HDD, Intel UHD Graphics 630, 2Yr OnSite, 6 Months Migrate Services, Windows 11 Home
Dell Inspiron 3891 Compact Tower Desktop - Intel Core i5, 16GB DDR4 RAM, 256GB SSD, 1TB SATA HDD, Intel UHD Graphics 630, 2Yr OnSite, 6 Months Migrate Services, Windows 11 Home
By Dell
$642.00
Dell Inspiron I3910 Desktop, 12th Gen Intel i5-12400 Processor, 12GB DDR4, 1TB HDD+256GB SSD, DVD Drive, Intel UHD Graphics, 802.11 ac, Bluetooth, HDMI, Windows 11 Home – Blue (Renewed)
Dell Inspiron I3910 Desktop, 12th Gen Intel i5-12400 Processor, 12GB DDR4, 1TB HDD+256GB SSD, DVD Drive, Intel UHD Graphics, 802.11 ac, Bluetooth, HDMI, Windows 11 Home – Blue (Renewed)
By Dell
$492.96
Dell Optiplex 7090 Ultra Desktop Price
Dell OptiPlex 7000 7090 Desktop Computer - Intel Core i7 11th Gen i7-1185G7 Quad-core (4 Core) 3 GHz - 16 GB RAM DDR4 SDRAM - 256 GB M.2 PCI Express NVMe SSD - Ultra Small - Black
Dell OptiPlex 7000 7090 Desktop Computer - Intel Core i7 11th Gen i7-1185G7 Quad-core (4 Core) 3 GHz - 16 GB RAM DDR4 SDRAM - 256 GB M.2 PCI Express NVMe SSD - Ultra Small - Black
By Dell
$779.95
Dell OptiPlex 7090 Ultra Mini Desktop Computer Bundle with 24" FHD Monitor, Intel Core i7-1185G7 4.4Ghz, 16GB RAM 256GB SSD, Keyboard & Mouse, Windows 11 Pro (Renewed)
Dell OptiPlex 7090 Ultra Mini Desktop Computer Bundle with 24" FHD Monitor, Intel Core i7-1185G7 4.4Ghz, 16GB RAM 256GB SSD, Keyboard & Mouse, Windows 11 Pro (Renewed)
By Dell
$389.00
Dell 2021 OptiPlex 7090 Ultra Desktop - Intel Core i7 11th Gen - i7-1185G7 - Quad Core 4.4Ghz - 256GB SSD - 16GB RAM - Windows 10 Pro (Renewed)
Dell 2021 OptiPlex 7090 Ultra Desktop - Intel Core i7 11th Gen - i7-1185G7 - Quad Core 4.4Ghz - 256GB SSD - 16GB RAM - Windows 10 Pro (Renewed)
By Dell
$849.98

Exterior

Dell Inspiron 3891 DesktopDell Optiplex 7090 Ultra
Size Comparison
Dimensions11.54 x 12.77 x 6.06” (293 x 324.30 x 154 mm)3.78” x 10.09” x 0.78” (96.1 x 256.2 x 19.7 mm)
WeightStarting at 10.88 lbs (4.94 kg)Starting at 1.16 lb (0.525 kg)
Colors
Black
Black
Keyboard and Trackpad
  • Dell KB216 Wired Keyboard English Black
  • Dell MS116 Wired Mouse Black
  • Dell Pro Wireless Keyboard and Mouse - KM5221W - English
  • Dell KB522 Business Multimedia Keyboard (US)
  • Dell KB813 Smart Card Keyboard (US)
  • Dell KB216 Wired Keyboard English
  • No Keyboard
Ports
  • Front
    • 3 x USB-A
      2 x USB 2.0 (480 Mbps)
      1 x USB 3.2 Gen 1 (5 Gbps)
    • 1 x USB-C
      USB 3.2 Gen 1 (5 Gbps)
    • 1 x SD card reader (Optional)
    • 1 x Universal Audio Jack
  • Rear
    • 4 x USB-A
      2 x USB 2.0 (480 Mbps)
      2 x USB 3.2 Gen 1 (5 Gbps)
    • 1 x RJ-45 
      Gigabit Ethernet.
    • 1 x HDMI 1.4b
    • 1 x VGA
    • 1 x Line-out re-tasking Line-in audio port
    • 1 x Power supply unit
    • 1 x Kensington lock slot
Bottom
  • 1 x USB-C
    USB 3.2 Gen 2 with DisplayPort Alt Mode and Power Delivery.
  • 2 x USB-A
    USB 3.2 Gen 2 (10 Gbps) with Smart Power On.
  • 1 x DisplayPort 1.4
    Supports 4K@120Hz.
  • 1 x RJ45 
    Gigabit Ethernet port.
  • 1 x DC-in 
    4.5mm barrel type.
Left
  • 1 x Thunderbolt 4
    USB 4 with DisplayPort Alt Mode.
  • 1 x USB-A
    USB 3.2 Gen 2 (10 Gbps) with PowerShare.
  • 1 x Universal Audio Jack
Right
  • 1 x Kensington Slot
  • 1 x Security Screw Slot

Chasis

Dell Inspiron 3891 DesktopDell Optiplex 7090 Ultra
Form FactorMini TowerUltra Form Factor
Power Supply
  • 260W
    80+ Bronze 85% Efficiency
  • 360W
    80+ Bronze 85% Efficiency
90W
4.5mm Barrel Power Adapter.
Optical DrivesOptional Tray load DVD Drive
Reads and Writes to DVD/CD

Internal Specs

Dell Inspiron 3891 DesktopDell Optiplex 7090 Ultra
ChipsetIntel B560 ChipsetTiger Lake PCH-LP (Integrated with the processor)
Processor
  • 10th Gen Intel® Celeron® G5905
    2C/2T, 3.50 GHz, 4MB SmartCache, 58W
  • 10th Gen Intel® Pentium® Gold G6405
    2C/4T, 4.10 GHz, 4MB SmartCache, 58W
  • 10th Gen Intel® Core™ i3-10105
    4C/8T, 3.70 → 4.40 GHz, 6MB SmartCache, 65W
  • 10th Gen Intel® Core™ i5-10400
    6C/12T, 2.90 → 4.30 GHz, 12MB SmartCache, 65W
  • 10th Gen Intel® Core™ i5-10400F
    6C/12T, 2.90 → 4.30 GHz, 12MB SmartCache, 65W
  • 10th Gen Intel® Core™ i7-10700
    8C/16T, 2.90 → 4.80 GHz, 16MB SmartCache, 65W
  • 10th Gen Intel® Core™ i7-10700F
    8C/16T, 2.90 → 4.80 GHz, 16MB SmartCache, 65W
  • 11th Gen Intel® Core™ i5-11400
    6C/12T, 2.60 → 4.40 GHz, 12MB SmartCache, 65W
  • 11th Gen Intel® Core™ i5-11400F
    6C/12T, 2.60 → 4.40 GHz, 12MB SmartCache, 65W
  • 11th Gen Intel® Core™ i7-11700
    8C/16T, 2.50 → 4.90 GHz, 16MB SmartCache, 65W
  • 11th Gen Intel® Core™ i7-11700F
    8C/16T, 2.50 → 4.90 GHz, 16MB SmartCache, 65W
  • 11th Gen Intel® Core™ i3-1115G4
    2C/4T, 3.00 → 4.10 GHz, 6MB SmartCache, 28W
  • 11th Gen Intel® Core™ i5-1145G7
    4C/8T, 2.60 → 4.40 GHz, 8MB SmartCache, 28W
  • 11th Gen Intel® Core™ i7-1185G7
    4C/8T, 3.00 → 4.80 GHz, 12MB SmartCache, 28W
Integrated Graphics
  • 10th Gen Intel® Celeron® G5905
    Intel® UHD Graphics 610
    350 → 1050 MHz
  • 10th Gen Intel® Pentium® Gold G6405
    Intel® UHD Graphics 610
    350 → 1050 MHz
  • 10th Gen Intel® Core™ i3-10105
    Intel® UHD Graphics 630
    23 Execution Units, 350 → 1100 MHz
  • 10th Gen Intel® Core™ i5-10400
    Intel® UHD Graphics 630
    24 Execution Units, 350 → 1100 MHz
  • 10th Gen Intel® Core™ i5-10400F
    Not Available
  • 10th Gen Intel® Core™ i7-10700
    Intel® UHD Graphics 630
    24 Execution Units, 350 → 1200 MHz
  • 10th Gen Intel® Core™ i7-10700F
    Not Available
  • 11th Gen Intel® Core™ i5-11400
    Intel® UHD Graphics 730
    24 Execution Units, 350 → 1300 MHz
  • 11th Gen Intel® Core™ i5-11400F
    Not Available
  • 11th Gen Intel® Core™ i7-11700
    Intel® UHD Graphics 750
    32 Execution Units, 350 → 1300 MHz
  • 11th Gen Intel® Core™ i7-11700F
    Not Available
  • 11th Gen Intel® Core™ i3-1115G4
    Intel® UHD Graphics
    48 Execution Units, 400 → 1250 MHz
  • 11th Gen Intel® Core™ i5-1145G7
    Intel® Iris® Xe Graphics
    80 Execution Units, 400 → 1300 MHz
  • 11th Gen Intel® Core™ i7-1185G7
    Intel® Iris® Xe Graphics
    96 Execution Units, 400 → 1350 MHz
Discrete GraphicsNVIDIA® GeForce®
  • GT 730 - 2GB GDDR5
  • GT 1030 - 2GB GDDR5
  • GTX 1650 SUPER - 4GB GDDR6
  • GTX 1660 SUPER - 6GB GDDR6
Memory
4GB 8GB 16GB 32GB 64GB
  • Memory Slots: 2 DIMM slots
  • Memory Type: Single or Dual Channel DDR4 Memory
  • Memory Speed:
    2666 MHz 2933 MHz
  • Memory Per Slot: 
    4GB 8GB 16GB 32GB
  • Memory Slots: 2 SODIMM slots
  • Memory Type: Single or Dual Channel DDR4 Memory
  • Memory Speed:
    3200MHz
Memory Configurations
4GB 8GB 16GB 32GB 64GB
Storage
  • 256GB 512GB 1TB 2TB
    M.2 PCIe NVME SSD
  • 1TB 2TB
    7200 rpm 3.5" SATA Hard Drive
  • 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
SlotsExpansion Slots
  • 1 x PCIe x16 slot 
    PCIe Gen 3, Full-height
  • 1 x PCIe x1 slot
    PCIe Gen 3, Full-height
SATA
  • 3 x SATA slots
    1 x SATA 2.0 for Slim Optical Drive
    2 x SATA 3.0 for 3.5-inch, 2.5-inch hard drive.
M.2
  • 1 x M.2 2230 slot
    For WiFi and Bluetooth combo card
  • 1 x M.2 2230/2280 slot
    For SSD/Intel Optane
Expansion Slots
  • No Expansion slot.
SATA
  • 1 x SATA 3.0 FFC connector
    For 2.5-inch 7mm slim HDD/SSD.
M.2
  • 1 x M.2 2230 slot
    For WiFi and Bluetooth combo card
  • 1 x M.2 2230 slot
    For PCIe SDD.
  • 1 x M.2 2230/2280 slot
    For SSD/Intel Optane

Connectivity

Dell Inspiron 3891 DesktopDell Optiplex 7090 Ultra
Wi-Fi
  • Qualcomm QCA9377
    Up to 433 Mbps Dual band 2.4 GHz/5 GHz WiFi-5 (802.11ac) Bluetooth 5.0
  • Qualcomm QCA61x4A
    Up to 867 Mbps Dual band 2.4 GHz/5 GHz WiFi-5 (802.11ac) Bluetooth 5.0
  • Intel AX201
    Up to 2400 Mbps Dual band 2.4 GHz/5 GHz WiFi-6 (802.11ax) Bluetooth 5.1
  • Qualcomm QCA61x4a
    Up to 867 Mbps Dual band 2.4 GHz/5 GHz WiFi-5 (802.11ac) Bluetooth 5.0
  • Intel AX201
    Up to 2400 Mbps Dual band 2.4 GHz/5 GHz WiFi-6 (802.11ax) Bluetooth 5.1
Bluetooth
Bluetooth 5.0 Bluetooth 5.1
Bluetooth 5.0 Bluetooth 5.1
EthernetRealtek RTL8111HSD Gigabit Ethernet controller
10/100/1000 Mbps.
Intel i219LM Gigabit Ethernet controller
Speed: 10/100/1000 Mbps.

Software

Dell Inspiron 3891 DesktopDell Optiplex 7090 Ultra
OS
Windows 10 Home Windows 10 Pro Windows 11 Home Windows 11 Pro
Free Upgrade to Windows 11
  • Windows 10 Home Windows 10 Pro
    Upgradable to Windows 11
  • Ubuntu Linux 20.04 LTS
Built-in Apps
  • Microsoft Office 30-day trial
  • McAfee LiveSafe 12 Month Subscription
Microsoft Office 30 Day Trial

Camera & Audio

Dell Inspiron 3891 DesktopDell Optiplex 7090 Ultra
Audio
  • Audio controller
    • C-media CM6548
  • External Ports
    • One headset port
    • One Line-out port
  • No built-in Speaker
  • Audio controller
    • Realtek ALC3204-CG
    • Intel High Definition Audio
  • External Ports
    • 1 x Universal Audio Jack
      Front

Misc

Dell Inspiron 3891 DesktopDell Optiplex 7090 Ultra
Warranty1 Year Hardware Service with Onsite/In-Home Service After Remote Diagnosis3-Year Basic Onsite Service

Dell Inspiron 3891 Desktop vs. Dell Optiplex 7090 Ultra

The Dell Inspiron 3891 Desktop and the Dell Optiplex 7090 Ultra were released in the same year, 2021. The Dell Inspiron 3891 Desktop 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. The Dell Optiplex 7090 Ultra has an ultra form factor that is very small and slim can be hidden in a monitor stand, mounted on a wall, or under a desk.

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 Dell Inspiron 3891 Desktop, 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 i7-11700F with a boost speed up to 4.90 GHz.

While Dell Optiplex 7090 Ultra has configurations with a 28W 11th Generation Intel Tiger Lake UP3 dual-core Intel Core i3-1115G4 up to a 28W quad-core Intel Core i7-1185G7 with a boost speed up to 4.80 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.

Both PCs have the same amount of two RAM slots meaning that you upgrade later if you are unsatisfied with the amount of memory on your PC. You can upgrade memory on Dell Inspiron 3891 Desktop up to 64GB of 2933MHz dual-channel DDR4 memory. For Dell Optiplex 7090 Ultra, it supports up to 64GB of 3200MHz 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 8 USB ports available on the Dell Inspiron 3891 Desktop, three more than the Dell Optiplex 7090 Ultra that has only 5 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 Dell Inspiron 3891 Desktop has seven USB Type-A ports and one USB Type-C port. It has four ports that support USB 2.0 (480 Mbps) and four ports that support USB 3.2 Gen 1 (5 Gbps).

For Dell Optiplex 7090 Ultra, it has three USB Type-A ports and two USB Type-C ports. The PC has three ports that support USB 3.2 Gen 2 (10 Gbps) and two ports that support USB 4.0 (40 Gbps).

Pricing

Dell Inspiron 3891 Desktop Price
Dell Inspiron 3891 Business Desktop Computer, 10th Gen Intel Core i5-10400, Windows 10 Pro, 16GB RAM, 512GB SSD, Intel UHD Graphics 630, Wi-Fi 6, Bluetooth
Dell Inspiron 3891 Business Desktop Computer, 10th Gen Intel Core i5-10400, Windows 10 Pro, 16GB RAM, 512GB SSD, Intel UHD Graphics 630, Wi-Fi 6, Bluetooth
By Dell
$750.00
Dell Inspiron 3891 Compact Tower Desktop - Intel Core i5, 16GB DDR4 RAM, 256GB SSD, 1TB SATA HDD, Intel UHD Graphics 630, 2Yr OnSite, 6 Months Migrate Services, Windows 11 Home
Dell Inspiron 3891 Compact Tower Desktop - Intel Core i5, 16GB DDR4 RAM, 256GB SSD, 1TB SATA HDD, Intel UHD Graphics 630, 2Yr OnSite, 6 Months Migrate Services, Windows 11 Home
By Dell
$642.00
Dell Inspiron I3910 Desktop, 12th Gen Intel i5-12400 Processor, 12GB DDR4, 1TB HDD+256GB SSD, DVD Drive, Intel UHD Graphics, 802.11 ac, Bluetooth, HDMI, Windows 11 Home – Blue (Renewed)
Dell Inspiron I3910 Desktop, 12th Gen Intel i5-12400 Processor, 12GB DDR4, 1TB HDD+256GB SSD, DVD Drive, Intel UHD Graphics, 802.11 ac, Bluetooth, HDMI, Windows 11 Home – Blue (Renewed)
By Dell
$492.96
Dell Optiplex 7090 Ultra Desktop Price
Dell OptiPlex 7000 7090 Desktop Computer - Intel Core i7 11th Gen i7-1185G7 Quad-core (4 Core) 3 GHz - 16 GB RAM DDR4 SDRAM - 256 GB M.2 PCI Express NVMe SSD - Ultra Small - Black
Dell OptiPlex 7000 7090 Desktop Computer - Intel Core i7 11th Gen i7-1185G7 Quad-core (4 Core) 3 GHz - 16 GB RAM DDR4 SDRAM - 256 GB M.2 PCI Express NVMe SSD - Ultra Small - Black
By Dell
$779.95
Dell OptiPlex 7090 Ultra Mini Desktop Computer Bundle with 24" FHD Monitor, Intel Core i7-1185G7 4.4Ghz, 16GB RAM 256GB SSD, Keyboard & Mouse, Windows 11 Pro (Renewed)
Dell OptiPlex 7090 Ultra Mini Desktop Computer Bundle with 24" FHD Monitor, Intel Core i7-1185G7 4.4Ghz, 16GB RAM 256GB SSD, Keyboard & Mouse, Windows 11 Pro (Renewed)
By Dell
$389.00
Dell 2021 OptiPlex 7090 Ultra Desktop - Intel Core i7 11th Gen - i7-1185G7 - Quad Core 4.4Ghz - 256GB SSD - 16GB RAM - Windows 10 Pro (Renewed)
Dell 2021 OptiPlex 7090 Ultra Desktop - Intel Core i7 11th Gen - i7-1185G7 - Quad Core 4.4Ghz - 256GB SSD - 16GB RAM - Windows 10 Pro (Renewed)
By Dell
$849.98

Motherboard

Dell Inspiron 3891 Desktop System Board.

Dell Inspiron 3891 Desktop Motherboard
Source: Dell

Dell Optiplex 7090 Ultra System Board.

Dell Optiplex 7090 Ultra Motherboard
Source: Dell

Popular Comparisons for Dell Inspiron 3891 Desktop

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Popular Comparisons for Dell Optiplex 7090 Ultra

Here are the most frequently requested comparisons for Dell Optiplex 7090 Ultra:

Dell Inspiron 3891 Desktop FAQs

Here are some related questions you might want to know about the Dell Inspiron 3891 Desktop:

  1. What Processor Does the Dell Inspiron 3891 Desktop Have?
  2. Can You Install Graphics Card in Dell Inspiron 3891 Desktop?
  3. What Ports Are on Dell Inspiron 3891 Desktop?
  4. What is the Weight and Size of Dell Inspiron 3891 Desktop?
  5. Can You Add More RAM to Dell Inspiron 3891 Desktop?

Dell Optiplex 7090 Ultra FAQs

Here are some related questions you might want to know about the Dell Optiplex 7090 Ultra:

  1. What Processor Does the Dell Optiplex 7090 Ultra Have?
  2. Can You Install Graphics Card in Dell Optiplex 7090 Ultra?
  3. What Ports Are on Dell Optiplex 7090 Ultra?
  4. What is the Weight and Size of Dell Optiplex 7090 Ultra?
  5. Can You Add More RAM to Dell Optiplex 7090 Ultra?

Dell Inspiron Family

Here are all Dell Inspiron devices we’ve covered on our site:

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Dell Optiplex Family

Here are all Dell Optiplex devices we’ve covered on our site:

Click here to view all Dell Optiplex desktops.