X79, ram, and f@h
View Single Post
January 25, 2012, 12:07 PM
Hall Of Fame
Join Date: Oct 2008
Location: Centre of the Universe
My System Specs
Originally Posted by
This was a bigger hit than I would have thought going from dual to quad channel, maybe there's something else going on that I'm missing, but thought I'd share.
We saw something similar with the 2P and 4P G34 rigs insomuch as there was a considerable amount of performance to be gained from higher frequency/lower latency RAM in quad-channel. It's interesting because that was essentially the first platform to witness a gain in FAH performance from RAM. By comparison, LGA1366 provided no discernible difference in switching between tri-channel or dual-channel.
Having said that, I share your surprise. I figured part of the reason why memory bandwidth made as much of a difference on G34 is because each processing thread needs its own address space, so a large MP system would depend more heavily on RAM performance. Your findings, though, would suggest it has more to do with the quad-channel bandwidth itself being particularly agreeable to FAH. This is indeed interesting. Thanks for sharing!
Join the PPD revolution!
Proud to be Folding @ Home
deadthings @ Team 37412
Think you can overclock? Then show us what you got!
Hardware Canucks Overclocking team
My System Specs
2 x Xeon X5679 @ 4.4 GHz
6x4GB Patriot Extreme DDR3-2000
MSI GTX580 Lightning + MSI GTX460 Cyclone
Vertex 3 MaxIOPS 240GB + Vertex 3 120GB + 3 x Samsung F1 750GB in RAID0
Does a sound card fold? Didn't think so.
BenQ V2400W + Sharp 32" LCD
View Public Profile
Send a private message to Dead Things
Find all posts by Dead Things