| You're right - the article says 'CPU: Intel Xeon E5-2620 v4 @ 2.10 GHz' but also says DDR3. And the specs page for that CPU (https://www.intel.com/content/www/us/en/products/sku/92986/i...) clearly says the 2620 v4 is DDR4. E5 CPUs have their supported RAM right on the Intel ARK pages, but short version: E5-xxxxx v1 and v2 are all DDR3 E5-xxxxx v3 and v4 are all DDR4 Not sure why Intel didn't just cut new model numbers instead of keeping them all as "e5" More concrete example for E5-2660 (great processor) showing v1 and v2 support DDR3, while v3 and v4, DDR4 (again, different motherboards) DDR3 v1: https://www.intel.com/content/www/us/en/products/sku/64584/i... DDR3 v2: https://www.intel.com/content/www/us/en/products/sku/75272/i... DDR4 v3: https://www.intel.com/content/www/us/en/products/sku/81706/i... DDR4 v4: https://www.intel.com/content/www/us/en/products/sku/91772/i... This also means that you need to know the processor your motherboard supports (or, easier, probably RAM) before putting in an order to upgrade the processor. (These processors are incredibly cheap, less than $10 for something that might have cost literally thousands ten years ago, so worthwhile to spend a few minutes and pick out your favorite based on cores, watts, Ghz, etc.) (Another commenter says that there are some motherboards that accept v3/v4 but also can run slower DDR3 RAM. That's new to me and quite cool - DDR3 is extremely cheap, even now. I did find these motherboards on aliexpress, too: https://www.aliexpress.us/w/wholesale-XD3-motherboard.html?s... and one clearly says v3/v4 cpu's with DDR3 RAM. That could be very useful although memory speeds are slower since CPU performance can be boosted with v3/v4.) v1: https://www.intel.com/content/www/us/en/ark/products/series/... v2: https://www.intel.com/content/www/us/en/ark/products/series/... v3: https://www.intel.com/content/www/us/en/ark/products/series/... v4: https://www.intel.com/content/www/us/en/ark/products/series/... |