Choosing an LGA1200 board in cpus, motherboards & memory comes down to more than the socket name. These two Dell boards share LGA1200 and DDR4 support, but each is tied to a different Dell desktop line. The useful decision is simple: match the board to the named system first, then weigh the USD 71.59 listed-price spread and condition.
Quick verdict
Pick the Dell XPS 8940 Desktop Motherboard when your planned system is specifically a Dell XPS 8940 and you want the listed support for 10th- and 11th-Gen Intel Core processors. Pick the Dell Precision 3650 Tower Motherboard when the target machine is a Precision 3650 Tower and the lower listed price matters more; it also carries BIOS Unlocked and Computrace Unlocked status.
Neither board is a general interchangeable choice merely because both use LGA1200. Their named Dell model compatibility is the first filter, while the XPS board's new condition and the Precision board's used condition are the key secondary tradeoff.
Listed comparison
| Detail | Dell XPS 8940 Motherboard | Dell Precision 3650 Tower Motherboard |
|---|---|---|
| Listed price | USD 161.58 | USD 89.99 |
| Named Dell model | Dell XPS 8940 | Dell Precision 3650 Tower |
| Processor information | 10th and 11th Gen Intel Core processors; LGA1200 | Intel; LGA1200 |
| Memory type | DDR4 | DDR4 SDRAM |
Where each motherboard wins
Dell XPS 8940 Motherboard: The clearest case is an XPS 8940-focused build or replacement. Its compatibility details explicitly name the XPS 8940 and 10th- and 11th-Gen Intel Core processors with the H470 chipset. It also lists USB 3.1, USB 2.0, USB Type-C, M.2, SATA, PCIe, RJ-45, and headset connections, plus a maximum memory configuration of 128GB.
Dell Precision 3650 Tower Motherboard: This is the more suitable direction for a Precision 3650 Tower. Its listed price is the lower of the pair, and BIOS Unlocked, Computrace Unlocked, and MDM not enabled are all specifically stated. Those details make it the more targeted choice when those status labels are part of the requirement for a Precision system.
Product notes
Dell XPS 8940 LGA1200 DDR4 Motherboard

The Dell XPS 8940 LGA1200 DDR4 Motherboard is the straightforward choice when the desktop is identified as a Dell XPS 8940. Rather than relying on the socket alone, its compatibility information names that model and identifies 10th- and 11th-Gen Intel Core processor support. The connection list is also notably broad, covering M.2, SATA, PCIe, USB Type-C, USB 3.1, USB 2.0, RJ-45, and a headset port. Choose it when those XPS-specific details and the listed new condition line up with the machine you are planning around. Its limitation is the same specificity: the stated compatible model is the XPS 8940, so it is best approached as an XPS-focused board, not a catch-all Dell selection.
Dell Precision 3650 Tower Intel W580 LGA1200 Motherboard

The Dell Precision 3650 Tower Intel W580 LGA1200 Motherboard makes most sense for a Dell Precision 3650 Tower where the board title itself is the match. It supports Intel CPUs and DDR4 SDRAM, and its BIOS Unlocked, Computrace Unlocked, and MDM not enabled status may be relevant for shoppers who specifically want those listed states. The lower listed price also separates it from the XPS board without turning the decision into a generic socket comparison. The tradeoff is its used condition. That can be entirely acceptable for the right Precision 3650 project, but it is a meaningful distinction beside the new-condition XPS board and should be part of the final call.
Final choice by use case
Choose the Dell XPS 8940 Desktop Motherboard Intel 10th 11th Gen LGA1200 DDR4 K3CM7 427JK for a Dell XPS 8940, especially when the listed 10th/11th-Gen Intel Core support, port selection, and 128GB maximum memory configuration are relevant to your plan.
Choose the Dell Precision 3650 Tower Intel W580 Socket LGA1200 Motherboard NDYHG 0NDYHG for a Dell Precision 3650 Tower, particularly when the USD 89.99 listed price and its unlocked BIOS and Computrace status are the deciding details. The desktop model named in each title should outweigh the shared LGA1200 socket.