20x Linx Stable i920 HT runs
 

Lets see some.

Ive got 4.2HT as my "sweetspot". Lowered every voltage as much as possible, and tightened everytiming as much as they would go.

920 D0 - 4200Mhz - 1600Mhz - 8-8-7-21 - 1.33VCore - 1.265VTT - 1.6VDimm - Auto everything else - Water - 35C/74C


Working on more.

I tried running this on my R2E with the 965 all settings stock. Instant blue screen every time. Don't know if I had a setting messed up or what but gave up.

I'll try and get one for ya tonight Cecil. I ran 5 passes easy at 4198mhz 1.28vcore loaded. Memory needs work though so I'll be spending my time on that.

Here's a run I did recently

920 C0 - 4000Mhz - 1600Mhz - 9-9-9-24 - 1.35VCore - 1.318VTT - 1.66VDimm - 1.86CPU/PLL - Auto everything else - Water - 25C/82C

If I had a Rad in my cooling loop, my temp delta wouldn't have been so wide.

With better control of temps I could get a 4200 Mhz pass. I was 70 min. into a run and got an error. :argh:

That means you are unstable as hell Jeff...LOL! Good thing you aren't benching it at stock!

Got 4.3HT now, working on some more.

920 D0 - 4300Mhz - 1640Mhz - 8-8-8-24 - 1.3875VCore - 1.325VTT - 1.6VDimm - Auto everything else - Water - 36C/83C

920 D0 - 4405Mhz - 12600Mhz - 8-8-8-24 - 1.5VCore - 1.5VTT - 1.6VDimm - Auto everything else - Water - 40C/89C


Still working on this one a bit.

Nice 4.45 run but ouch with the volts and temps!! Can you get the volts any lower?

Working on it. I spent about 5 hours trying to get it stable, then said screw it and pushed them all too high.

very nice man. You sure you can't get your vcore down more? Here is mine.
This was tested also few hours of prime and went on to crunch about another day and a half at those settings.

http://img.techpowerup.org/090906/stability 4.2ghz.jpg

Dont have an i7 anymore, but yes, thats as low as it went. Voltage was read with a DMM, CPU-Z reports it WAY wrong.

Also, you are testing partial ram in that pic, not all. Makes a big difference in stability.

As far as the voltage that I can't argue about as I did not read them with a MM, but the RAM, was used about just over half, and then these settings also primed for 5 hours that same night, and went on to crunch at 85% for about a day and a half after. So I'm pretty sure it was stable. But regardless I'm not running those clocks now anymore, I'm on stock cooling so down to 3.6 GHz @ 1.094v. I miss my watercooling! "hung:

What Cecil was getting at is, when running LinX to test stability, you should run 20 passes and remember to press the "All" button beside "Memory to use". Itadds quite a lot of stress.
I've had runs crash in the 19 pass, 70+ min in.

I completely understand, but keep in mind I ran prime for five, I would like to say almost six hours that night and it didn't fail. I do however completely agree to what you guys are saying.

Prime really does nothing to i7, doesnt matter how long you run it when its not fully stressing the system.

If you run 8 threads of it, it'll stress all cores to 100%, did a quick run just to show you, see below:


http://i599.photobucket.com/albums/t...01/Capture.jpg

Task manager will say 100% even when its not. The memory controller is on the chip, and prime does not stress it fully. Even 3dmark will say its 100% when its not. Thats why there is a large difference in temps between the tests.

I never noticed that, thanks for pointing it out. Prime is still to me the best method of stress testing based on my experiences. If you can overnight prime with no issues, I say you are good to go. LinX is great, but I've had LinX stable rigs fail prime. So I try to stick to prime unless I'm just looking for quick stability.

Meh, everyone's definition of stable varies. For me, if it runs wprime 1024, superpi32m, all the 3Dbenchmarks, and my fav game of the month, then its stable. I'm not crunching, folding or running a cad system so this works for me in my world.

I used to be that way, but eventually it used to come back and bite me maybe 3 months down the line. I do crunch 24/7 with both of my rigs though so yeah, just stop crunching for one night, test and if stable, crunch happily ever after :D

I have to agree with Kal...I run 3.9 24/7 and if that sucker will do 3x linx and play the games i want i am cool.
Now when i bench a 3Dmark run from 4.500-4.625 I really don't care if it's prime stable or not..If it finishes the run it's prime....

I was going to say something similar. More & more, I'm getting to the point where if it finishes the bench and I can get a screeny, it's stable enough.

I was able to do that with my previous rig. But this CPU in particular is very very tricky. So I just reverted to Prime, trust me I never stress tested for anybody, but this CPU in particular has caused me too.

Maybe it could be the MB,Ram or GPU. I have had two I7 920s CO and DO. One 950 and now a 975 and they are pretty straight forward as far as clocking them...Maybe??

my C0 was pretty straightforward, but my D0 is a bit tricky, once you get it right, it clocks hella good.

Hmm, thats an unusually high cpu count, we'll need to run some tests and administer 100L of LN2 STAT! We could be dealing with a severe case of OCD. Overclocking Compulsive Disorder :morpheus:

Speaking of OCD, I've been eyeing this:

http://www.co2airinc.com/100%20pph.htm

What's your diagnosis?

Well, weighing in at over 1200lbs and producing 100lbs of high quality dense dry ice an hour, It looks like it could temporarily treat OCD. You'll have to get a price quote to be sure tho.

I'm curious how much it'd cost. Still, as a Resident Diognosior here, I'd have to be responsible and point out that this is a very temporary fix and you MUST realize that LN2 is the preferred long term treatment plan. :band2:

I haven't phoned them for a price, yet.
The reason I went looking for this in the first place is because the only place I can get dry ice in town isn't open on the weekends and they don't produce it here. They get it shipped in and store it. The stuff I used, so far, seemed kinda low grade or degraded from storage. I picked it up on a Friday afternoon, benched after work, and by 5:00 am, it was all gone.
Needless to say, I had serious withdrawl symptoms the rest of the weekend.:greensick:

Haha, yah, I know what you mean with having a taste of cold and have it all subliminate on you. I can't complain, the only thing I pay for is the drive.

If you got 30k laying around, they sell LN2 plants as well :Dizzy:

"OCD" I am shit my pants laughing!

Yah! Go ahead an laugh funny boy. You'll catch the bug soon enough hanging around here.

I thought it was funny, but that don't mean I don't have it lol. I kinda got over it a bit. But I have a feeling you guys are gonna make me become a overclocking/benching junky again :shock:

It wouldnt hurt you're hwbot profile if you submitted a run or two. In fact, wprime 32m and 1024m have a convenient and easy "Submit" button built right into the application. Even the laziest of overclockers can garner 2 or 3 points at stock speeds.

I know ur not a pussy tho and running at stock is out of the question :poke:

:cool3:

I try to find two speeds. Any modern CPU (made in the last year) at stock even is fast enough for daily apps. So I look for a high clock thats easy to get to for 24/7 that is stable.
For benching, whatever passes is good enough.

Id just rather it be stable to not worry about any long term damage to the chip, even though Ive never been known to keep a cpu (or just about any part) more then a month or two.

It's true..I have the illness...I buy it..play with it..sell it on ebay..Buy again...I am sure the I9's will be next....BUT then again..I don't golf 3 times a week or own a really big boat so Lets get some new stuff>>>>>:laughing:

I have submitted at HW bot a bit, just haven't in a really long time. I started crunching and trying not to mess as much with the rig, so that's why.

damn I thought I switched a lot:Dizzy:

Just happen to have made a list of all my changes since 12/08.

E4300 @ 3.6
ASUS P5Q-Deluxe
Core Contact Freezer
2x2gb Mushkin Redlines 1100Mhz 5-5-5-12
8600GT @ 720/1100


Upgrades
E8500 @ 4410
GTX-280 stock cooled, 768 core

Sold board, ram and CPU

New system
X2 5200 Windsor
ASUS M2N-SX-SE-Plus
2x1gb Patriot DDR2 800Mhz
Geforce 6800 Vanilla

New system
i7 920 C0/C1 OCed 4Ghz HT Air
ASUS P6T
GTX-280
3gb OCZ Platinums

Sold for cash plus Phenom rig

Gigabyte 790X-UD4P
5200 OCed to 3.4Ghz
Replaced with Ph2 940BE OCed 3.7Ghz
2x2 OCZ SLI 1000Mhz ram
ATI 3850

Traded for laptop

New system
Asrock 790GX
X2 7850 OCed to 3.6Ghz
2x1Gb Patiot Ram
Onboard GPU

Sold

New systems
i7 920 D0 Water Cooled 4.4HT stable, 4.8HT Validated
ASUS R2E
3x2Gb Corsair XMS3 1600s OCed 1750Mhz 8-8-8-24
4870 512mb / 9800GT SLI / 4870 1gb / 4890

E8500 E0 Water Cooled OCed 4.6Ghz stable, 4940Mhz Validated
2x2gb Of Corsair ram from above
x300

Both systems sold

Current system/s
X2 550 BE Unlocked and OCed to 3750Mhz Stable Air Cooled
790x-UD4P
2x2gb Gskill PI 1100s
PCS 4890
(H20-220 Kit On Way)

Abit IP35-Pro
Celeron 356
Super Talent D9GMH 900Mhz Stick (tested to 1080 Cas 5 so far)
ATI X1300
CCF Air Cooled
DICE pot at the ready
(Working on chilled water, Apogee GTZ/Eheim pump/5150BTU AC)
Need PSU

Wow!

Cecil's a Hardware Cronic :good: