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[Build Log] 4p AMD Opteron 6174s & SuperMicro H8QGL-iF+ Folding Rig - Page 14

post #131 of 139
Quote:
Originally Posted by deafboy View Post

1) He ran it caseless on his desk.
2) They don't run hot enough to warrant water, 212s are even overkill.

Regarding water cooling, are you saying these chips can't be overclocked very much regardless of heat?

On the cases -- I was looking for recommendations, although after continuing to search I am now leaning towards Spotswood 4P tray.
post #132 of 139
They can be overclocked, but not much. Server chips aren't really designed to be overclocked and many cant.
 
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post #133 of 139
Quote:
Originally Posted by deafboy View Post

They can be overclocked, but not much. Server chips aren't really designed to be overclocked and many cant.

I would invite you to search the 4P rig posts around here a little more. What you state has been the case in the past with OCs of 12.5% possible but complicated to set up.
With BIOS modifications that are available now you can OC the 61xx Opteron series CPUs on SuperMicro MBs at least +20% and I am running 6128s just under 30% OC, folding stable.
That may not seem like a lot to 1P, quad/hex core builds but multiplied by 4 with 8 to 12 cores each can make a big difference in PPD (folding is what we are discussing, correct?).
I will agree however, that WC is not required to get these OCs at the moment. A reasonable air cooling setup keeps temps well under control for me.

But that being said, there is an underground attempt under way to provide higher voltage control on the same SuperMicro MBs and Opterons. ph34r-smiley.gif
If that happens, temps will go up and WC could definitely be of benefit to allow even higher OCs.
post #134 of 139
Quote:
Originally Posted by bwhiten View Post

I would invite you to search the 4P rig posts around here a little more. What you state has been the case in the past with OCs of 12.5% possible but complicated to set up.
With BIOS modifications that are available now you can OC the 61xx Opteron series CPUs on SuperMicro MBs at least +20% and I am running 6128s just under 30% OC, folding stable.
That may not seem like a lot to 1P, quad/hex core builds but multiplied by 4 with 8 to 12 cores each can make a big difference in PPD (folding is what we are discussing, correct?).
I will agree however, that WC is not required to get these OCs at the moment. A reasonable air cooling setup keeps temps well under control for me.
But that being said, there is an underground attempt under way to provide higher voltage control on the same SuperMicro MBs and Opterons. ph34r-smiley.gif
If that happens, temps will go up and WC could definitely be of benefit to allow even higher OCs.

My comment was more of a generalization for server chips as a whole. Many can't be overclocked and those that can really can't overclock that much (in comparison to non-server, enthusiast chips). But I do agree, every little bit can make a big difference.
 
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post #135 of 139
Thread Starter 
Quote:
Originally Posted by ctrlbrk View Post

Quote:
Originally Posted by deafboy View Post

1) He ran it caseless on his desk.
2) They don't run hot enough to warrant water, 212s are even overkill.

Regarding water cooling, are you saying these chips can't be overclocked very much regardless of heat?

On the cases -- I was looking for recommendations, although after continuing to search I am now leaning towards Spotswood 4P tray.

He was just saying that heat is not a problem at all with these chips. Even with 212+s with the bios OC hack running F@H they don't go above 45 degrees.

I would highly recommend Spotswood's 4P trays/cases. They are top notch smile.gif
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Verktøy Cu
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post #136 of 139
Quote:
Originally Posted by derickwm View Post

I would highly recommend Spotswood's 4P trays/cases. They are top notch smile.gif

Thank you, I agree and will purchase his custom tray.

I will post my other comments in your main 4p thread which I have found.

Mike
post #137 of 139
sorry to bump this but, its the only person with this board + sdd that I found.

I'm hitting a hard 150MB/s read \ 180MB/s Write limit on a 840PRO SSD. Cant figure out what the hell is wrong. The board supports 3gbps.

did you see the same issues with your SSD ?


thx
post #138 of 139
Quote:
Originally Posted by spyshagg View Post

sorry to bump this but, its the only person with this board + sdd that I found.

I'm hitting a hard 150MB/s read \ 180MB/s Write limit on a 840PRO SSD. Cant figure out what the hell is wrong. The board supports 3gbps.

did you see the same issues with your SSD ?


thx


Your maybe limited by sata 2
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post #139 of 139
Quote:
Originally Posted by bonami2 View Post

Your maybe limited by sata 2

Hi

Sata 2 ends at 300MB/s.


anyway I found the problem. This is a very poorly designed sata controller on this board.

When setting the SATA to either IDE or RAID, performance per channel drops to SATA 1.5Gbps. On a performance board no less! can you imagine that?

You can only go above 1.5Gbps in AHCI mode, but still doesn't manage to hit the 3Gbps. It can only hit 250MB/s (the 840PRO is rated above 450MB/s)
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