Core i7 920 rev D0 stepping 5 :)

[DJSUB]

here's my i920 D0 + Foxconn Bloodrage

[pinto]

Without hyperthreading case enable you only use 4 of the 8 threads m8.

[FragMagnet]

Frag,
You may not realize it, but I think you just set a new record, at least for this forum. 4557 Mhz is the highest sustained prime run I've ever seen in all the
i7 920 threads. It's all the more impressive given your high temps. By that, I mean the higher the temps, the better the AC characteristics have to be.
Way to go, man!

Thanks roller11, I had 4600 going for 12 mins, but every v I touched after that it ran even less. Maybe something to do with the components delivering power on the mobo. I hope to get a full night at it this weekend. I'm right at the point of this cheaper corsair needing the 6x ratio, but I had the timings set manualy. I hadn't been paying attention to the hi speed runs before, as my c0/c1's were mid pack chips. Of the 40-50 cpu's I've owned over the years, this is as close to a "golden" one as I've had, meaning the xx20 series. How it fairs against the other D0's as they emerge, time will tell. But it is a nice way to come back to the hobby after 5 years off I want to start reducing the voltages, especially QPI/VTT and a few of the others to see if they are actualy needed, fine tuning basicaly, and a H/S remount. I'm hoping to get a 4.5 stable enough for a 24/7 setting, if not then somewhere around 4.4

[Woody-san]

A Little Better...

[ReverendMaynard]

Once I read this, I didn't even look at your settings or submissions for I already knew they were invalid. Run Prime95 Blend 30m - 1hour then resubmit. Try actually testing for VTT instead of just setting 1.35v thats WAY too high compared to respectable submissions.

GIGO: Garbage IN, Garbage OUT

The only garbage here is your post.

You know you just made it evident to everyone here that you know absolutely nothing about linpack, i7 and prime.

20 minutes of linpack is equivalent to 8 hours of prime blend and if you had done ANY testing of the two side by side on an i7 system, you'd know what time it is. You're sig shows you're still testing....keep on testing with prime and you'll permanently have that in your sig.

[TurboDiv]

20 minutes of linpack is equivalent to 8 hours of prime...

He'll be picking on you now...

[Splave]

^I wouldnt be to worried about this lol

[bluehaze]

20 minutes of linpack is equivalent to 8 hours of prime blend

In my experience on 2 different 920's now, I can pass the Linpack 20 pass with max memory use and problem size but will still fail prime if I leave it overnight.

I do wish Linpack was more reliable as an hour or so of stability testing is certainly more convenient than having to do it overnight. Unfortunately this just never seems to be the case for me I end up having to run Prime overnight to guarantee i'm stable so i pretty much stopped using linx altogethor as it seems pointless to use it when i still have to prime overnight anyways

[ReverendMaynard]

In my experience on 2 different 920's now, I can pass the Linpack 20 pass with max memory use and problem size but will still fail prime if I leave it overnight.

I do wish Linpack was more reliable as an hour or so of stability testing is certainly more convenient than having to do it overnight. Unfortunately this just never seems to be the case for me I end up having to run Prime overnight to guarantee i'm stable so i pretty much stopped using linx altogethor as it seems pointless to use it when i still have to prime overnight anyways

To each their own, but you're not here telling people that their input is garbage so that's an entirely different issue.

Prime lost it's value as a stability tool for me when a 10 hour prime blend stable failed in 1 second of linx, full memory, high work load. And it's not just me who have experienced this...

[ben805]

I'm still looking for the optimal overclock of my D0 Batch 3849A846 for 24/7 usage, I use my core i7 system for batch converting RAW files about 20~30GB of data at a time, and also use it for HD video editing so my rig must be able to sustain heavy cpu load for extended period of time and it has to survived through the summer heat. So far this D0 chip is mopping the floor of the C0 it replaced, my C0 can only do 3.6Ghz with HT on, at 3.8~4.0Ghz the HT had to be off and it needed 1.37vcore to reach those speed.

An initial test at 4.30Ghz (21x205) @1.32vcore



4.30Ghz with HT on, need a slight bump in vcore and vtt/PQI



As you can see with HT ON and slightly higher vcore/PQI it runs about 7'C hotter, with my current air cooling I'm not sure if I feel comfortable with this chip approaching 90'C underload, my HAF 932 case has plenty of airflow, and the Noctua NH-U12P has two Silverstone (110cfm each) in push/pull configuration. I think this D0 chip have more headroom left but suppressing the heat with air cooler is quite a challenge. I'll have to put it through 100 passes of LinX once I found the best compromise overclock for 24/7 usage.

[ben805]

To each their own, but you're not here telling people that their input is garbage so that's an entirely different issue.

Prime lost it's value as a stability tool for me when a 10 hour prime blend stable failed in 1 second of linx, full memory, high work load. And it's not just me who have experienced this...

same here, in the past both my Opty rig and this Core i7 system would passed 24hr Prime95 but failed within seconds of running LinX. Showing a couple minutes of Prime95 and claimes it rock stable is laughable...

[roller11]

Does your 24/7 work load benefit fron HT on? If not, turning it off buys you a budget of less vcore/more CPU clock that you can spend in any proportion you like. Also,
what CPU loads are your RAW file convertions and video editing producing, and what temp levels?

What I especially like about your post is that your D0 earns you more than just bragging rights, you get real world benefits from the extra power of the D0...great results!

[ben805]

Usually I let the DPP convert RAW files in the background while I do the editing of the finished data in Photoshop CS4 or Lightroom 2.3 simultaneously, the HT definitely help and my cpu load hit 100% load on all 8 threads, I don't think the calculation is as intense as LinX as I haven't seen any of the core hitting 80'C, but the duration do last for couple hours, it depends on how much data I needed to crank out. Less than 10GB I should be able to get away with HT off, but 20~30GB of data would save me some valuable time with the HT on. I guess whenever I have a chance I'll have to bust out the stop watch to do some comparison test with HT on and off to see how big of a difference it is.

[roller11]

To each their own, but you're not here telling people that their input is garbage so that's an entirely different issue.

Prime lost it's value as a stability tool for me when a 10 hour prime blend stable failed in 1 second of linx, full memory, high work load. And it's not just me who have experienced this...

What is a "stability tool"?

[ReverendMaynard]

What is a "stability tool"?

apps are tools....linx and prime are stability apps. Get it?

[haya_gann]

Max　Bclk
BIOS　233*19

[ReverendMaynard]

Nice haya but you have to fix that pic.

[roller11]

apps are tools....linx and prime are stability apps. Get it?

No, I don't. linx/prime are programs that solve linear equations/test integers for primeness, mersenne primes in particular. "Stability" is a state of being that applies only to the instant of time to which it is referenced. So to explain that a 'stability tool' is a 'stability app', tells me nothing. Maybe a better question is "what is 'stability' "because there seems to be a lot of confusion about this easily defineable word.

[bluehaze]

To each their own, but you're not here telling people that their input is garbage so that's an entirely different issue.

Prime lost it's value as a stability tool for me when a 10 hour prime blend stable failed in 1 second of linx, full memory, high work load. And it's not just me who have experienced this...

I agree he certainly could have handled that better.

I guess every machine is different then, I certainly wish I could just run a 20 pass of linx and know im stable. I suppose I will have to continue to use both on new processors just to be sure im stable.

[bluehaze]

No, I don't. linx/prime are programs that solve linear equations/test integers for primeness, mersenne primes in particular. "Stability" is a state of being that applies only to the instant of time to which it is referenced. So to explain that a 'stability tool' is a 'stability app', tells me nothing. Maybe a better question is "what is 'stability' "because there seems to be a lot of confusion about this easily defineable word.

Stable to me essentially means that when a game or app crashes I know it's not due to my overclock and I dont have to mess with it. For instance if I haven't passed Prime overnight for at least 12 hours then when an app crashes it could be because of my overclock or it could be because of any number of other things and it makes troubleshooting way too time consuming. I'd rather just get it out of the way up front and never have to deal with it again

[roller11]

For instance if I haven't passed Prime overnight for at least 12 hours then when an app crashes it could be because of my overclock or it could be because of any number of other things and it makes troubleshooting way too time consuming. I'd rather just get it out of the way up front and never have to deal with it again

And what if you have passed prime for at least 12 hours, and your computer crashes? What then? Could still be your OC.
You can pass 100 hours of linpack and see a BSOD the next day when you boot up and go into email.

[ReverendMaynard]

No, I don't. linx/prime are programs that solve linear equations/test integers for primeness, mersenne primes in particular. "Stability" is a state of being that applies only to the instant of time to which it is referenced. So to explain that a 'stability tool' is a 'stability app', tells me nothing. Maybe a better question is "what is 'stability' "because there seems to be a lot of confusion about this easily defineable word.

What purpose other than stability do you use these for dude? Didn't think so, now please lay off the bullsh**. Thanks for the much needed lesson :P

[roller11]

What purpose other than stability do you use these for dude? Didn't think so, now please lay off the bullsh**. Thanks for the much needed lesson :P

I answered this in my post, I'll state it once more just for you:

Prime95 tests integers of the form (2^n) -1 for primeness
Linpack solves systems of linearly independent equations. As to "stability",
there is no such thing as a program that guarantees stability.
And that's no bullsh**.

[.OCX]

To each their own, but you're not here telling people that their input is garbage so that's an entirely different issue.

Prime lost it's value as a stability tool for me when a 10 hour prime blend stable failed in 1 second of linx, full memory, high work load. And it's not just me who have experienced this...

GIGO = Accounting Term people learn in College, used to describe many data related analysis.

To each their own? Now your just missing the point entirely and being ignorant to the fact that you are grossly incorrect. Linx is NOT a Valid program to Test 24/7 settings for your i7, you will fail Prime95 in UNDER 10 MINUTES every time.

I just have to ignore him now and wish him the best of luck. You really can't spend that much time or energy on someone who can't grasp on to the big picture. In the working world, these tend to be people that are let go in slow times or never promoted. They latch on to the small words, the small ideas, instead of grasping the big picture: Data Validity.

Nothing in my signature is unique and can't be replaced or upgraded to something new. My Sig is nothing more then a snapshot in time for others who may have questions about building something similar. Feel free to hit PM or Email me with any questions you may have about my current build.

[mk-ultra]

fine...now can we get back to D0s?