Folding@Home News 23nd - 30th April 2011

dekez · 30 Apr 2011 at 19:05

Team OcUK Folding@Home News 23nd - 30th April 2011

Current Team Position: 36th
Current Team Score: 570,126,762
Crunched This Week: 8,472,576 (24hr avg. 1,195,910)

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Ones to keep an eye on

Pleasuredome Community - 4.2 Months
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Hewlett Packard - 10 Years

We are currently 30th in team production

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OCPBiotech
elzio
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Sorry a little late again this week, and I've been slacking!!

The team is doing pretty well though and more new members, welcome

I still haven't swapped out my motherboard yet, this weekend probably, new watercooling bits are arriving on Wednesday already for when the B3 board returns

didgemaster · 30 Apr 2011 at 22:56

Thanks for the news dekez.

I have finally got my i7-920 to 4GHz but at the cost of slowing my memory to 1200MHz.

Thanks must go to our very own Mr Speed for helping me through the process. However I have a question:

Will my machine crunch units quicker @4GHz with the memory @1200MHz or @3.8GHz with the memory @1448MHz?

Biffa · 1 May 2011 at 01:42

1T or 2T?

didgemaster · 1 May 2011 at 08:18

Biffa said:
1T or 2T?

Biffa is this a question for me? If so could you explain as I don't understand what you're asking.

And I also have a correction to make My memory is running at 1146MHz not 1200Mhz

Biffa · 1 May 2011 at 09:29

In your memory settings, is the command rate set to 1T or 2T thats what I have found makes a bigger difference in folding performance (particularly bigadv)

You can check it in cpuz - Memory tab

didgemaster · 1 May 2011 at 10:12

Biffa · 1 May 2011 at 15:58

Looks like you are good to go. What memory is that?

didgemaster · 1 May 2011 at 17:05

Patriot Viper PVT36G1600LLK 1600MHz, 6GB off the MM
should do 8-8-8-24 but won't run with 8 multiplier - I should try and get it back to 8-8-8-24 now I'm using 6 multiplier

Biffa · 2 May 2011 at 03:14

You should be able to run it at 666/1333Mhz but looking into it it appears there is no SPD for that speed on those :confused:

I would have thought with a little extra volts say 1.55 it should go to 666 at 9-9-9-24

BaBa · 2 May 2011 at 08:25

Thanks for the news Dekez

Ive just let Hydra run for the last week and have even peaked over 500k a few times on eoc

didgemaster · 2 May 2011 at 08:54

Biffa said:
You should be able to run it at 666/1333Mhz but looking into it it appears there is no SPD for that speed on those

I would have thought with a little extra volts say 1.55 it should go to 666 at 9-9-9-24

The memory is not the problem. I can have it running at 1600MHz 8-8-8-24 and it will pass memtest +86 for hours on end. The problem is the influence it has on the QPI of the CPU

The system is stable @3.8GHz with memory @1448MHz - memory multiplier at 8 CPU multiplier at 21 Blk at 181. If I increase the Blk then the system becomes unstable

loudbob · 2 May 2011 at 23:25

didgemaster said:
The memory is not the problem. I can have it running at 1600MHz 8-8-8-24 and it will pass memtest +86 for hours on end. The problem is the influence it has on the QPI of the CPU

The system is stable @3.8GHz with memory @1448MHz - memory multiplier at 8 CPU multiplier at 21 Blk at 181. If I increase the Blk then the system becomes unstable

I'm sure you've already stated your system specs (in a previous post/thread) - but can't seem to find it.

Anyways, did you try to loosen up your ram profile a little:
9-9-9-27-2T - it might get you to 1600mhz.

Also, do you have a bios option to set uncore frequency - should be twice that of ram i.e 3200mhz when ram at 1600mhz.

Apologies if you've already heard all this.

I'm currently running an i7 930 @ 4.2ghz (1.38125v), ram at 1600mhz (1.65625v), CPU Pull @ 1.908v - all other voltages on auto.

QPI @ 3600mhz, Uncore @ 3200mhz & bclk @ 200.

On a side note:

My i7 860 can run a 4.0ghz with mem @ 2000mhz (bclk 200) for a day or so before becoming unstable - but I don't have an option in bios to alter Uncore frequency - it's set at 3000mhz (ish - I would have to check bios to be certain). But if I reduce bclk to 182 everything works great.

I7 860 currently running at 4.0ghz (1.38125v), mem @ 1456mhz (9-9-9-27-1T and 1.6v) and CPU Pull @ 1.908v - all remaining settings/voltages on auto.

Biffa · 2 May 2011 at 23:46

You don't have a 2:8 multi?

loudbob · 3 May 2011 at 00:16

Yeah, I got 2:8 multi on the memory - but when raising memory to 1600mhz and above the system becomes unstable.

I didn't want to raise the voltages any higher due to temperature issues (air cooling just not upto it) - plus I can't manually raise the uncore frequency.

As stated, the Uncore frequency needs to be twice that of the memory (recommended).

T'is fine on the i7 930 & Asus RE3 - I have all the adjustable bios settings I can shake a stick at.

But the i7 860 is mounted in a m-atx board with limited bios settings (Gigabyte P55M-UD4) - http://www.gigabyte.com/products/product-page.aspx?pid=3166#ov

Funny really as the board supports upto 2200mhz DDR3 - guess I will have to recheck bios to see if there is any way to possibly alter the Uncore frequency.

Edit: After a very quick google - I just found this: http://www.hardocp.com/article/2009/11/17/gigabyte_p55mud4_motherboard_review/2 so I will be investigating my overclock settings (again) during daylight hours

didgemaster · 3 May 2011 at 07:21

BIOS Settings can be found here

Frozennova · 3 May 2011 at 07:52

Ta for new the news dekez, I've beem plagued with a bsod the last two nights. Woke up in the middle of last night to reboot it but wasn't so lucky the night before. I've bumped the vcore to see if that helps. Cant see why though as its been stable for months

BeeP · 3 May 2011 at 08:03

Warmer weather maybe?

dekez · 3 May 2011 at 08:46

BeeP said:
Warmer weather maybe?

Might be although you would expect that to happen during the day as it's generally cooler at night.

Coincidentally FN my rig blue screened the night before last for the first time ever in maybe 2 years. Hopefully it's not a sign of what's to come!

Frozennova · 3 May 2011 at 10:01

Its definatly not temp related, full load the highest I've had over the last few weeks is 53'c which gives me a good 10'c headroom on AMDs specs. I'm not entirely convinced its Vcore related either, the only thing that I've changed in weeks is tethering my phone before bed to ensure the GPU is fed with work overnight as my girlfriends parents insist on the internet being turned off over night. I'll try it without tonight and see how it goes.

On a positive side the GTS450 has really gave my PPD a nudge in the right direction, I'm just waiting in bulldozer release now.

dekez · 3 May 2011 at 10:07

frozennova said:
the only thing that I've changed in weeks is tethering my phone before bed to ensure the GPU is fed with work overnight as my girlfriends parents insist on the internet being turned off over night.

Why are they doing that?