Memory compatibility & selection

Tell us the server, and the path to the right module is mechanical: platform, rules, recommended grade, part number, quote. This page walks it.

Knowledge pages are educational references, independent of sales inventory. Items without confirmed sourcing are reference-spec — quoted on demand.

The selection path

Server modelIdentify generation from the model name - R740 = Dell 14th Gen, DL380 Gen10 = HPE Gen10.

RulesSpeed follows CPU generation; RDIMM and LRDIMM never mix; channels populate evenly.

Recommended grade2666V for 1st Gen Scalable, 2933Y for 2nd Gen, 3200AA for 3rd Gen and EPYC.

Part numberPick Samsung, SK hynix or Micron - exact P/Ns below.

QuoteSend P/N and quantity; compatibility check is free with every RFQ.

Platform	Max DDR4 speed	Recommended 32GB modules
Dell R630 / R730 (13G)	DDR4-2133 / 2400	Legacy platform - quote on request
Dell R640 / R740 / R740xd (14G)	DDR4-2666	DDR4-2666V: M393A4K40CB2-CTD · HMA84GR7CJR4N-VK · MTA36ASF4G72PZ-2G6
Dell R640 / R740 / R740xd (14G)	DDR4-2933	Legacy platform - quote on request
Dell R650 / R750 (15G)	DDR4-3200	DDR4-3200AA: M393A4K40DB3-CWE · HMA84GR7DJR4N-XN · MTA36ASF4G72PZ-3G2
HPE DL360 / DL380 Gen9	DDR4-2133 / 2400	Legacy platform - quote on request
HPE DL360 / DL380 Gen10	DDR4-2666 / 2933	DDR4-2933Y: M393A4K40CB2-CVF · HMA84GR7CJR4N-WM · MTA36ASF4G72PZ-2G9
HPE DL360 / DL380 Gen10 Plus	DDR4-3200	DDR4-3200AA: M393A4K40DB3-CWE · HMA84GR7DJR4N-XN · MTA36ASF4G72PZ-3G2
Lenovo SR630 / SR650	DDR4-2666 / 2933	DDR4-2933Y: M393A4K40CB2-CVF · HMA84GR7CJR4N-WM · MTA36ASF4G72PZ-2G9
Lenovo SR630 V2 / SR650 V2	DDR4-3200	DDR4-3200AA: M393A4K40DB3-CWE · HMA84GR7DJR4N-XN · MTA36ASF4G72PZ-3G2
AMD EPYC Rome / Milan platforms	DDR4-3200	DDR4-3200AA: M393A4K40DB3-CWE · HMA84GR7DJR4N-XN · MTA36ASF4G72PZ-3G2

All compatibility conclusions are indicative - final confirmation depends on the specific CPU, BIOS and configuration. We verify before quoting.