I7 920 or 2 x 55xx

[MarkOne]

I planing my bigadv rigs, I will like to have you tough on using a dual 55xx Xeon stock instead of a 920 OC at 4ghz

[3.0charlie]

Dual E5520s, stock: 33min, average
i7 920 3.9GHz (21 x 191): 31min, average

Both will yield similar results, dual 1366 boards can be found for 300 (Newegg.ca - Computer Hardware,Motherboards,Server Motherboards,ASUS,Dual LGA 1366).

[chrisk]

I would go with an i7 920. I get about 31-32TPF on bigadvs at 4GHZ. Especially if you are going to use a virtual machine, since its restricted to 8 cores right now. I think tdual Xeon rigs get about 35TPF. Check this thread out:
Folding Forum • View topic - Frame Times on -bigadv Units I think the i7 920 rigs are cheaper to do as well.

If the vmware rigs could see more than 8 cores (ie. two Xeon chips with HT), then it might be better. 3.0Charlie might be the one to talk to.

[lowfat]

Originally Posted by chriskwarren

I would go with an i7 920. I get about 31-32TPF on bigadvs at 4GHZ. Especially if you are going to use a virtual machine, since its restricted to 8 cores right now. I think tdual Xeon rigs get about 35TPF. Check this thread out:
Folding Forum • View topic - Frame Times on -bigadv Units I think the i7 920 rigs are cheaper to do as well.

If the vmware rigs could see more than 8 cores (ie. two Xeon chips with HT), then it might be better. 3.0Charlie might be the one to talk to.

Thanks for the link.

From what I've seen so far x E5540's when running in native linux will get you sub 27min TPF. Which is nearly impossible for a single i7. Mine @ 4810MHz only gets 27min 30sec.

Now THIS is impressive

Project #: 2683
Average time/frame: 14M 51S
CPU: Opteron 8356 B3 @ 2.3 GHz
# of CPU sockets: 8
# of cores:32
# of fahCore_A2 processes running: 32

RAM installed: 20GB
RAM used by FAH: 11.05GB
OS / Linux kernel: Ubuntu 8.04 Server kernel 2.6.24

Too bad that thing is outrageously priced. You could likely build 4 i7's and it would still be cheaper and yield more PPD.

[MarkOne]

Are all the Do easy to OC at 4ghz with Water ?.

[MarkOne]

Originally Posted by lowfat

from what I've seen so far x E5540's .

5540, I was thinking 5520. a 5540 is over $ 800 a piece.

[3.0charlie]

Originally Posted by MarkOne

Are all the Do easy to OC at 4ghz with Water ?.

Yes, most will do 4.0.

FYI, I'm contemplating buying a W3570 for shits and giggles, and I may have a 920 C0 available shortly (the same one that did 3.9 with the Noctua D14 on my Rampage II Gene). It'll go for dirt-cheap.

[Chilly]

I can only imagine what fun for crunchers and folders it is to be had with the upcoming EVGA board

[lowfat]

Originally Posted by MarkOne

Are all the Do easy to OC at 4ghz with Water ?.

Most D0's will have no problem doing 4GHz on air.

Originally Posted by MarkOne

5540, I was thinking 5520. a 5540 is over $ 800 a piece.

I didn't realize the price

[lowfat]

Originally Posted by Chilly

I can only imagine what fun for crunchers and folders it is to be had with the upcoming EVGA board

Rich ones anyways You are always going to be multiplier limited when overclocking w/ the lower cost Xeons.