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i7 920 Low PPD?

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obscurity78

Limp Gawd
Joined
Oct 11, 2009
Messages
214
First 10 WU do not get the bonus, after that you will get the same ppd that HFM.net says.

Also, why do you have HT off? If you turn it on it will get ya up to 15-17k ppd.
 
To get the CPU clocked @ 3.6 I was told that disabling HT would make the system more stable. Did I read incorrectly?

I'll try enabling HT tonight to see if it makes a difference.
 
Make sure you have signed up for a passkey. Once you have folded at least 10 work units under your passkey, you should start recieving a bonus.

If you turn on hyperthreading, it will also allow you to crunch bigadv work units which are what yield significant points since F@H will treat it like an 8 core processor. However, your system will need to be a dedicated or near dedicated folding rig in order to meet the deadlines for that.
 
Passkey has been enabled since the first WU. So I should be getting the bonus from WU #11 and on correct? I'll look to see if that is the case.

I doubt I'll attempt the bigadv units as this is also a gaming rig.
 
obscurity78 said:
Passkey has been enabled since the first WU. So I should be getting the bonus from WU #11 and on correct? I'll look to see if that is the case.

I doubt I'll attempt the bigadv units as this is also a gaming rig.
Click to expand...

It will boil down to how much gaming you do, and what bigadv work unit you get. If you get one of those notorious 2684's, you won't have any time for gaming as you will be pushing pretty close to the 4 day deadline. Folding1 takes 3.7 days to finish a 2684. If you get any of the other bigadv work units, you should have enough time to do some gaming. It just depends on how much gaming you generally do. You are right that it is probably better to stick with general SMP for your purposes.

Providing that you have sucessfully completed the 10 work units within the bonus deadline, yes you will start getting a bonus from #11 on. What kind of cpu cooler are you running? I ask as hyperthreading is going to make your processor run hotter. I have never tried running my i7's with HT turned off, so I don't know how big of a difference it will be. If it affects system stability, it isn't anything that a little more voltage won't fix.
 
Running a Thermaltake bigwater kit. At full load and my exhaust fan at 50% (barely audible over the power supply fan) my core temps are in the low 70's. I definitely have room for a bit of extra heat.

I'm running 3.6Ghz on stock voltages so if I have to I can bump voltages up a bit if HT causes any stability trouble.
 
obscurity78 said:
Running a Thermaltake bigwater kit. At full load and my exhaust fan at 50% (barely audible over the power supply fan) my core temps are in the low 70's. I definitely have room for a bit of extra heat.

I'm running 3.6Ghz on stock voltages so if I have to I can bump voltages up a bit if HT causes any stability trouble.
Click to expand...

Folding1 runs in the mid to upper 60's running at 3.46ghz with vcore at 1.2685. It also needs a good cleaning as it is caked in dust right now. If you are at stock voltage right now, chances are very good that you are going to need to boost it once HT is turned on. I had no idea you could clock at i7 that high on stock voltage with HT off. Have you considered just switching to a good air cooler like the Cogage TRUE Spirit? I havn't heard very many good things about the Thermaltake as I too was considering the bigwater until I found that it isn't very effective.
 
Just checked w/ CPU-Z and my voltage is @ 1.272v. Voltage is set to [Auto] in the BIOS. Could have swore I set it manually to 1.02 but I've had this rig for almost 2 years. It's a C0 CPU which if I recall doesn't overclock as well as the newer steppings.

The water cooling actually works fairly well. System idles around 30c when not running F@H and has been running constantly for almost 2 years now.

I'll do some adjusting of voltages tonight when I get home from work and see what I can do.
 
yes you want HT on adds 30% to folding dont let anyone tell you different and some will. C0's over clock just fine. start with 1.35 vcore set qpi bus to lowest setting. keep memory at rated speed should be able to run a 200 bus speed. 3.6 to 3.8 should be very easy to get to.
 
Yeah, definitely keep HT on. I would also try to overclock a bit more if I were you. I was able to get 4 GHz on my 920's with slightly over stock voltages and still on air. One of them overclocked very easy, but the other two did take a couple days of trial and error. Now I get around 25,000 PPD for the bigadv. The best part about it is that these aren't even dedicated systems. We still use them to do basic office work like internet and word, and we don't see any difference in performance at all. Now, I'm sure you will probably have to turn them off when doing anything too demanding, but for mine, it finished about half a day before the deadline, so if it needs to be turned of for an hour or two, it doesn't hurt too much.
 
I spent the better part of today trying to get my rig to run 4.0ghz but no luck.

I'm not sure why it's not working. I've read a quite a few guides on what voltages need increased, what multipliers should be set to, etc but I'm just not hitting that magic combination.

This is the only combination I can keep stable enough to run F@H
3.6ghz CPU, 1440mhz DDR3, 6480mhz QPI

CPU Multiplier: 20
BCLK: 180
CPU VCORE: 1.25v
CPU PLL: 1.6v
DRAM: 1.5v
QPI: 1.275v
ICH: 1.1v
ICH PCIE: 1.5v
IOH: 1.1v
IOH PCIE: 1.5v

Temps on idle are 49C and full load 81C
 
lower your qpi to lowest setting. dram should be 1.65 try 200X18 to hit 4.0 takes around vcore1.35 or better. what motherboard do you have?
 
P6T Deluxe board. Memory is rated 1.5v-1.6v DDR3 1333, so the 1440 is a slight overclock.. At 4ghz the memory is underclocked @ 1200mhz due to the 6x multiplier with 200 bclk
 
obscurity78 said:
P6T Deluxe board. Memory is rated 1.5v-1.6v DDR3 1333, so the 1440 is a slight overclock.. At 4ghz the memory is underclocked @ 1200mhz due to the 6x multiplier with 200 bclk
Click to expand...

What is stopping you? Your memory speed or the processor? Id see if the memory can go 2:8 at 200 bclk. Crank the multiplier down and see if you can get to 200+ bclk.
 
Yeah your 1333 ram is holding you back, run the lowest multiplier you can, then double the uncore multi.

back when I had 1333 ram I got it to ~14XX something, now I run 1600 at ~1560

also keep the (not sure which one) voltage within .5 volts or your dram
 
musky said:
What is stopping you? Your memory speed or the processor? Id see if the memory can go 2:8 at 200 bclk. Crank the multiplier down and see if you can get to 200+ bclk.
Click to expand...

At this point I'm thinking it's the CPU itself or my cooling that is holding me back. I can get it to post at 4.0ghz using either 20x200 or 19x211 but then when I put any load on it, it either bluescreens with a 0x00000000124 error or hits 95C and locks up.
 
obscurity78 said:
At this point I'm thinking it's the CPU itself or my cooling that is holding me back. I can get it to post at 4.0ghz using either 20x200 or 19x211 but then when I put any load on it, it either bluescreens with a 0x00000000124 error or hits 95C and locks up.
Click to expand...

What Vcore? If you are on auto, I wouldn't doubt it is close to 1.4V at those speeds. My air cooling can hold about 1.35V and remain sane. Yours should be better than that, but 95C ain't gonna cut it.
 
+1 on the HT turned on. What kind of MB and cooling do you currently use? I'm running a couple of i7-920's @ 4.0 Ghz, Gigabyte x58-ud3R boards with Corsair H50 cooling here, and would be happy to send you screen shots of all my settings if you need them.
 
Axdrenalin said:
+1 on the HT turned on. What kind of MB and cooling do you currently use? I'm running a couple of i7-920's @ 4.0 Ghz, Gigabyte x58-ud3R boards with Corsair H50 cooling here, and would be happy to send you screen shots of all my settings if you need them.
Click to expand...

Asus P6T Deluxe
 
Kyle has a review of that motherboard. not much tweaking needed just setting vcore and memory. to run 4.0 i have the standard version. which runs 24/7 at 4.0 1.4 vcore 1.65 memory. your cooling is probably the big factor here as things get funny after 85c
 
Axdrenalin said:
+1 on the HT turned on. What kind of MB and cooling do you currently use? I'm running a couple of i7-920's @ 4.0 Ghz, Gigabyte x58-ud3R boards with Corsair H50 cooling here, and would be happy to send you screen shots of all my settings if you need them.
Click to expand...

That would be great. My board is the Asus P6T Deluxe but I'm sure I can decipher the settings from a different BIOS.

I can get my system to complete a 10 pass Intel BurnTest on a 12x multiplier and a 200bclk so that shows that my QPI and Uncore can handle the overclock correct? Looks like the limiting factor for me is heat as I get close to 1.4v on the CPU my crappy water cooling just can't hack it.
 
obscurity78 said:
That would be great. My board is the Asus P6T Deluxe but I'm sure I can decipher the settings from a different BIOS.
Click to expand...

It's a 31 Meg download since I never resized the images, but I took these back in April when I first got my 920's stable. I'm running two identical setups at 211x19 using Corsair DDR3/1600 on these boards. I've never had even a hiccup out of either one of them since I got them going, although I've shut them down for extended periods (vacation, trips, etc.) They're both running 24/7 now days... ;)

Anyways - Here's the linkage if you want to download them.
 
Just pulled the trigger on a Corsair H50, some Artic Silver 5, and a lapping kit for my CPU/waterblock (can you say mirror finish? I can)

Hoping this will help me push to the 4ghz mark and up my PPD a bit.
 
obscurity78 said:
Just pulled the trigger on a Corsair H50, some Artic Silver 5, and a lapping kit for my CPU/waterblock (can you say mirror finish? I can)

Hoping this will help me push to the 4ghz mark and up my PPD a bit.
Click to expand...

my most stable setting is 190X21. im also using a h50 but its barley cools it. wonder how much lapping would help ?
 
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