dashoe
Dabbler
- Joined
- Nov 27, 2023
- Messages
- 17
I'm upgrading the RAM on some Dell R710 servers. There are a number of possible configurations however the below excerpt from the user manual indicates that the ram will operate at specific speeds depending on how many modules (up to 3) are place in a channel. In the end I opted to use the larger modules with just one module per channel in order the achive the highest memory 1333 MHz rate. My question is how significant will the performance difference be? For example, if I add even more ram in the future, I'll have to drop to the 1067 MHz rate (would I be likely to notice it)? Note that these machines will be serving as hypervisiors not NAS units. I assume, from other post here, that for TrueNas maxing out the RAM will be beneficial even if it runs at a lower rate.
For single or dual-rank memory modules:
• One memory module per channel supports up to 1333 MHz.
• Two memory modules per channel supports up to 1067 MHz.
• Three memory modules per channel are limited to 800 MHz,
regardless of memory module speed.