snyderkv
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Memory speed vs size?
EE,
I have a Dell R610 that can fit 96GB with 8GB sticks (KTD - PE313/8G)
I'm not sure how to tell whether it's dual or quad rank but my question is that either one when fully populated into the slots will reduce speed from 1333 down to 800hz
My question is, is this a noticable difference in memory performance and what can the drawbacks be? We don't exactly need 96GB per server and can increase the speed to 1333 at 48GB but have no bench testing or examples to confirm a noticable benefit
Please assist, thanks
I have a Dell R610 that can fit 96GB with 8GB sticks (KTD - PE313/8G)
I'm not sure how to tell whether it's dual or quad rank but my question is that either one when fully populated into the slots will reduce speed from 1333 down to 800hz
My question is, is this a noticable difference in memory performance and what can the drawbacks be? We don't exactly need 96GB per server and can increase the speed to 1333 at 48GB but have no bench testing or examples to confirm a noticable benefit
Please assist, thanks
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Just like the white papers on Intel's site the HP white paper doesn't address the speed difference using a real world application but uses a memory performance test. Generally applications perform better if they have more RAM to play with regardless of the extra RAM possibly slowing the bus down.
ASKER
Cool thanks for the info and the links. I'll check them out
Funny though, the BIOS says 1333 @ 96G despite what the documentation says. I'm guessing it's running slower but displaying it's rated output.
Thanks
Funny though, the BIOS says 1333 @ 96G despite what the documentation says. I'm guessing it's running slower but displaying it's rated output.
Thanks
ASKER
Thanks Andy. But I mean we use maybe <10% of the RAM available so I'm sure there's RAM sitting idle?
BIOS often reports DIMMs ratings, depends on server model. If you're not going to be using the RAM then better to take it out, as noted it does slow it down if fitted but not used.
ASKER
Roger