Core i7 920 rev D0 stepping 5 :)

[eva2000]

My first i7 920 D0 stepping cpu and bclk wise, it has alot of potential on plain water. Although, vcore wise it's a mixed bag > http://i4memory.com/f80/first-i7-920...results-17703/ heh.





want to see the fastest i7 920 on the planet courtesy of Windows 7 and CPUZ flakiness during Hyper Pi 8x 32M Pi test ? How about 12200Mhz - 61x200bclk LOL




Update: interesting the vcore required for HyperPi 8x 32M PI test might be just for that, as I started testing Prime95 small FFTs 1hr stable at 20x200 = 4000Mhz at 1.312v and Prime95 Blend custom 5.4GB test at same 1.312v and it's running without problems. So HyperPi 8x32M Pi test might come down to memory/voltage related settings. Will try lower vcore after the custom Blend test and then LinX.

You guys should try HyperPi v0.99b 8x 32M pi test to compare against your prime95/linx runs

HyperPi v0.99v download link http://nx.i4memory.com/hyperpi/hyper_pi_0.99b.zip

[roller11]

To get past the 237 wall I was hitting yes increased the vcore some and pcie from the 105 I was on to 112...

Thanks for that. Did you by chance try 110, or did you go straigt from 105 to 112?

[mattkosem]

Mem freq is 1640
Uncore is at Auto (same as 8), result in a 3280

The Corsair works just fine using this setting, but the OCZ craps out each time even though it has the better timing than the Corsair. Time for RMA?

BTW, what does Uncore freq do anyway?

On the 222+ blck, I can run stable at 16x225 (3.6Ghz) but any higher than that the PC craps out. Vcore is all the way up to 1.35v something. Is this D0 a bad overclocker or is it just something I'm not doing correctly here?

Have you tried the 6x memory multi? I can't get my 920 stable too far over 4.2 with the memory on 8x. With the multi at 6x, it goes to 4.4 no problem even with the same uncore frequency.

--Matt

[Sam_oslo]

Xeon W3520 Batch# 3848A352

First boot @4.4GHZ 1.328v(Idle) . This is not primestable for 24/7 yet (gotta work more on it), but I'm pretty happy with my D0-babe's first attempt.

[bluehaze]

Heres mine, still working with it have a leaky radiator so can't leave prime on for very long New radiator tommorow or next day and will try to push more.

[jagt]

Xeon W3520 Batch# 3848A352

First boot @4.4GHZ 1.328v(Idle) . This is not primestable for 24/7 yet (gotta work more on it), but I'm pretty happy with my D0-babe's first attempt.

So you ended up with an Xeon, Sam? You may not recognise me here, but I posted a few times in the i7 thread at hw.no before you got banned with a different nickname. Same batch as me, I assume you got it from Digital Impuls?

[nutcase]

I am still playing with my D0. mine is watercooled

12GB of ram is a pain to get settled down

[road-runner]

5215mhz 248 x 21 cpuz...

http://valid.canardpc.com/show_oc.php?id=569065

[TL1000S]

Xeon W3520 Batch# 3848A352

First boot @4.4GHZ 1.328v(Idle) . This is not primestable for 24/7 yet (gotta work more on it), but I'm pretty happy with my D0-babe's first attempt.

Great result Sam.

Please not get banned here..

[roller11]

5215mhz 248 x 21 cpuz...

http://valid.canardpc.com/show_oc.php?id=569065

This is just SICK!! What voltage/cooling? Most important, did you find that 112 PCIE yielded better results than 110?
RR, you obviously have great skill in OCing, only Anand Tech with a well stocked scientific lab and big budget has bested you. If you want to keep your hard-earned secrets to yourself, I wouldn't blame you, but if you want to share whatever magic settings you've discovered, I'd love to learn from you cause I'm stuck at 234.4x21 at low volts so I think there's more progress I can make. Anyhow, I sincerely hope you get all the accolades you deserve.

[Sam_oslo]

Great result Sam.

Please not get banned here..

LOL, Thanks, but this not final yet. The best part is to follow (hopefully ), but over here, it is harder to get banned for good results, LOL.

[road-runner]

This is just SICK!! What voltage/cooling? Most important, did you find that 112 PCIE yielded better results than 110?
RR, you obviously have great skill in OCing, only Anand Tech with a well stocked scientific lab and big budget has bested you. If you want to keep your hard-earned secrets to yourself, I wouldn't blame you, but if you want to share whatever magic settings you've discovered, I'd love to learn from you cause I'm stuck at 234.4x21 at low volts so I think there's more progress I can make. Anyhow, I sincerely hope you get all the accolades you deserve.

Yes the more PCIE the farther I could go, I saw it was on 114 today when I cranked up the OCZ Cyro Z. I do not remember the volts and I took it apart earlier to make sure there is no condensation in the cpu, everything looked great and dry. I know all settings are in the green shaded settings and some are not even in the green, no need to go into the red zone. I know the RAM was 1,66, PLL 1.8 - 1.9 does not make much difference, vtt 1.3v I bump it to 1.4 or 1.425 with the utilility, ICH was 1.3 or 1.275, I boot a 220 and then use the eleet overclock tool. Seems I can vary the voltages one way or the other a few increments does not really matter, this is a great motherboard...

[roller11]

Road,

I googled the OCZ cryo z and found it at Central Computers for just $399. The only validation I've seen higher than yours was from Anand tech, and he went through 15 liters of LN2, and got temps down to -186C, so to say he had more resources than you is an understatement. Your validation is positively shocking, especially considerng how you achieved it, hope to see more numbers in the future. And thanks for the tips, I'll try them out.

[cky2k6]

Just got my 920 d0, did a quick 06 run at 4.2ghz at 1.3v (Just a wild stab, no idea what it actually needs). My batch is 3849B028, wonder if its any good or not as I haven't seen anybody else with this stepping. Will get to real testing on wednesday, after my finals are over.

[jcniest5]

Just got my 920 d0, did a quick 06 run at 4.2ghz at 1.3v (Just a wild stab, no idea what it actually needs). My batch is 3849B028, no idea if its any good or not. Will get to real testing on wednesday, after my finals are over.

Where did you order yours? Seems like batch B0?? OCs the best out of the bunch.

[cky2k6]

I got it at a computer store near me (jandr).

[jcniest5]

I got it at a computer store near me (jandr).

Where's Jandr?

Now, if I understand it correct, on the i7 system, there is no real benefit running high bclk vs. low bclk. The real benefit is gained when a higher speed is obtained. In other words, the higher the speed, the more benefici regardless of bclk, speed? So, that means if I can obtain a stable speed at 4.305Ghz (21x205) vs. 4.275Ghz (19x225), the higher speed (in this case
t is the 4.305Ghz) that is more beneficial, correct?

[zsero]

What would you recommend for air overclocking (TRUE) on a medium budget, Q9650 or 920 D0? I do not wish to spend much money on motherboards, it would be from the Gigabyte UD3 or UD4 series for both CPUs. I do not wish to bench them, I just need a 24/7 stable system for rendering and 3D animation. Is it possible to run these guys over in the 4.2-4.5 range for stability on air, or it's about the 4.0 range, which you might recommend.

[Zucker2k]

Where's Jandr?

Now, if I understand it correct, on the i7 system, there is no real benefit running high bclk vs. low bclk. The real benefit is gained when a higher speed is obtained. In other words, the higher the speed, the more benefici regardless of bclk, speed? So, that means if I can obtain a stable speed at 4.305Ghz (21x205) vs. 4.275Ghz (19x225), the higher speed (in this case
t is the 4.305Ghz) that is more beneficial, correct?

Your Ram/uncore/qpi speed will suffer a little bit, but cpu speed trumps all as you'll have more bandwidth than you'll actually need.

[theoldtimer]

Just got my 920 d0, did a quick 06 run at 4.2ghz at 1.3v (Just a wild stab, no idea what it actually needs). My batch is 3849B028, wonder if its any good or not as I haven't seen anybody else with this stepping. Will get to real testing on wednesday, after my finals are over.

That’s the same batch # as my D0 and it came from Micro Center (the price is down to $199.99 now). I hope it clocks better than my C0 (4263MHz 21X203)? I’ll find out in a couple of days.
Good luck with yours.

[jcniest5]

That’s the same batch # as my D0 and it came from Micro Center (the price is down to $199.99 now). I hope it clocks better than my C0 (4263MHz 21X203)? I’ll find out in a couple of days.
Good luck with yours.

Did you buy yours locally or through internet order? I know my local Micro Center still has only C0/C1. I hope they still have the $199.99 price when the D0 shows up.

[lee63]

Did you buy yours locally or through internet order? I know my local Micro Center still has only C0/C1. I hope they still have the $199.99 price when the D0 shows up.

I'm just curious what are your temps? idle and load and what cooling you have.

[theoldtimer]

Did you buy yours locally or through internet order? I know my local Micro Center still has only C0/C1. I hope they still have the $199.99 price when the D0 shows up.

I bought my D0 in the store Sunday. The salesman said they had at least ten more D0’s at that time the rest were C0’s.

[jcniest5]

I'm just curious what are your temps? idle and load and what cooling you have.

I test mine at so many speeds, I will double-check a few and let you know.

[jcniest5]

I bought my D0 in the store Sunday. The salesman said they had at least ten more D0’s at that time the rest were C0’s.

What's the location of your store?