Core i7 920 rev D0 stepping 5 :)

[ReverendMaynard]

love to see that running IBT or linx ^^^^

I'd give it 1.3 seconds before a BSOD.

[aoch88]

What are the chances of D0 doing 4.5Ghz stable? What's the average voltage required? I wouldn't want to spend extra cash if there isn't a lot of difference from my C0.

[chance]

love to see that running IBT or linx ^^^^

I'd give it 1.3 seconds before a BSOD.

If you are talking about W3520 4.5GHZ@1.27v, you're wrong, it will be stable the same way...

[MACMAC]

What are the chances of D0 doing 4.5Ghz stable? What's the average voltage required? I wouldn't want to spend extra cash if there isn't a lot of difference from my C0.

Depends on what kind of cooling you have. If you're on air, the chances of running 4.5Ghz 24/7 are relatively small unless you're using 100CFM+ fans.

[lee63]

Xeons are also welcome?

What Batch # is that ?...I have one coming tomorrow

[jooney]

3845a935

[ReverendMaynard]

If you are talking about W3520 4.5GHZ@1.27v, you're wrong, it will be stable the same way...

I am talking about all variants of the 920, Xeon or not and 4.5ghz HT on @ 1.27v using IBT or Linpack at full memory usage isn't happening. If I see I'll believe, but you telling me I'm wrong at least puts a humorous spin on it.

[SimpleTECH]

3845a935

Woot! I just got that same Xeon today. Hopefully mine will overclock well on my UD4P.

[ex2cib]

anyone seen anything on a 3850a823

its a W3520. Won't be able to test it for at least another week.

I know no guess is perfect, but i'd like to know what i can on it

[Jakethesnake011]

I am trading someone my c0 and some cash for his d0 is is a 3849A916 batch I heard this batch does very well. I have seen some benchmark it at 4.5 Ghz on a Giga board. So far my C0 will top out at 4.2GHz, hope this new chip is worth the extra cash.

[jcniest5]

Stopped by the local Micro Center and checked out a few batch #s...

Here is what they have (all DO SLBEJ):

3849A799
3849A925
3849B018
3850A849

Any of these rings any bells of OCing?

There were also some C0/C1 SLBCHs, but wasn't interested in them...

These are found at my local MC. Anyone with any info at all regarding their OCability, please advise. Thanks...

[MACMAC]

These are found at my local MC. Anyone with any info at all regarding their OCability, please advise. Thanks...

Obviously, it's all a game of chance, but I would definitely put my money on the 3849B018.

Most 3849B's have proven quite strong thus far, so that is your best bet among the listed batches

[jcniest5]

Obviously, it's all a game of chance, but I would definitely put my money on the 3849B018.

Most 3849B's have proven quite strong thus far, so that is your best bet among the listed batches

I already have 3849B028, should I also get B018?

[MACMAC]

I already have 3849B028, should I also get B018?

Now that I really couldn't answer.

I guessing you haven't tried the 028?

[roller11]

my B027 is pretty good, so I'd go with the B028
http://valid.canardpc.com/show_oc.php?id=587080

[famich]

Hello anyone, planning to upgrade-anyone heard, had this batch , pls ? Any info, any feedback on this ? Thanks ....

[jcniest5]

Now that I really couldn't answer.

I guessing you haven't tried the 028?

my B027 is pretty good, so I'd go with the B028
http://valid.canardpc.com/show_oc.php?id=587080

It's not 3845B028, though. It's 3849B028 that I have. One digit difference.

[MACMAC]

It's not 3845B028, though. It's 3849B028 that I have. One digit difference.

I knew that, but the question remains, did you test it?

[bluehaze]

love to see that running IBT or linx ^^^^

I'd give it 1.3 seconds before a BSOD.

Prime blend is harder to pass than IBT or Linx. Although 2 hours isn't much I have been through 3 different processors and 2 different sets of ram and have always needed 2 extra notches of Vcore to pass Prime blend after I was Linx stable. Also have spoken to others that have much the same results, however have never seen anyone post screens of prime blend 8 hours at the same vcore as linx. Care to take the test?

[bluehaze]

What are the chances of D0 doing 4.5Ghz stable? What's the average voltage required? I wouldn't want to spend extra cash if there isn't a lot of difference from my C0.

On water with HT off it's a comfort zone for my 920, I can do it with HT on and can do 4.6 with HT off 24/7 but the temps are so much higher that it just seems past the point of diminishing returns for a 24/7 setup. 4.5 HT off is nice temps don't go above 80c usually hover around 70-73 on a 24 hour Prime blend.

[jcniest5]

I knew that, but the question remains, did you test it?

I am using it now. It's my main PC.

[MACMAC]

I am using it now. It's my main PC.

Went through your post history and saw the 4.7Ghz validation, that's pretty impressive. What are you running 24/7?

[rge]

Prime blend is harder to pass than IBT or Linx. Although 2 hours isn't much I have been through 3 different processors and 2 different sets of ram and have always needed 2 extra notches of Vcore to pass Prime blend after I was Linx stable. Also have spoken to others that have much the same results, however have never seen anyone post screens of prime blend 8 hours at the same vcore as linx. Care to take the test?

It is hard to make a global statement based on a few samples, and apply that to thousands and thousands of other setups, sometimes you can be right...and sometimes not. Took me just few hours with linx to find below OC points, and have checked some with prime, and like on my i940 I record tests.

4.2 HT on, vcore 1.28 pass linx 10 runs of 5100mb, 2 notches less fails 1st pass.

4.3 HT on, vcore 1.31 pass linx 10 runs of 5100 mb (max memory), 1 notch less failed 8th run of same, later confirmed 9 hrs prime stable blend.

4.4 HT on, vcore 1.34 pass linx 10 runs of 5100 mb, 1 notch less failed 6th run, confirmed later with 9 hrs prime stable. Lowered vcore 1 notch in bios, still says 1.34 cpuz load, and still passed prime 13 hrs.

4.5 HT on, vcore 1.38 pass linx 5 runs, 45 mins prime, did not run either longer 2nd temps.

On both my i940 and i950 I need at least same and when tested more vcore for linx at max memory, than prime.

Showing a prime blend and linx stable screenshot together, how would you know they did not simply choose a vcore that both would run at I have a 13 hour run with prime blend at vcore that failed linx max memory.

Only way to prove anything would be to video a 13 hour run of prime at vcore where prime passed but linx failed, then keep video going and run linx and capture the bsod. But time demands vary considerably from my interest in the subject.

Since I have now heard quite a few arguing both ways, I assume it is possible for some cpu/mobo/setups to need more vcore for linx or prime, especially given difference between 2 programs and given extra heat of linx.

Or maybe I should get into the internet spirit, and say everyone is crazy that found it the opposite of my setup.

[SimpleTECH]

Just starting to overclock my W3520. Stock voltages, but boy these things can get hot, even under H²O.

[bluehaze]

It is hard to make a global statement based on a few samples, and apply that to thousands and thousands of other setups, sometimes you can be right...and sometimes not. Took me just few hours with linx to find below OC points, and have checked some with prime, and like on my i940 I record tests.

4.2 HT on, vcore 1.28 pass linx 10 runs of 5100mb, 2 notches less fails 1st pass.

4.3 HT on, vcore 1.31 pass linx 10 runs of 5100 mb (max memory), 1 notch less failed 8th run of same, later confirmed 9 hrs prime stable blend.

4.4 HT on, vcore 1.34 pass linx 10 runs of 5100 mb, 1 notch less failed 6th run, confirmed later with 9 hrs prime stable. Lowered vcore 1 notch in bios, still says 1.34 cpuz load, and still passed prime 13 hrs.

4.5 HT on, vcore 1.38 pass linx 5 runs, 45 mins prime, did not run either longer 2nd temps.

On both my i940 and i950 I need at least same and when tested more vcore for linx at max memory, than prime.

Showing a prime blend and linx stable screenshot together, how would you know they did not simply choose a vcore that both would run at I have a 13 hour run with prime blend at vcore that failed linx max memory.

Only way to prove anything would be to video a 13 hour run of prime at vcore where prime passed but linx failed, then keep video going and run linx and capture the bsod. But time demands vary considerably from my interest in the subject.

Since I have now heard quite a few arguing both ways, I assume it is possible for some cpu/mobo/setups to need more vcore for linx or prime, especially given difference between 2 programs and given extra heat of linx.

Or maybe I should get into the internet spirit, and say everyone is crazy that found it the opposite of my setup.

LOL I know I pull my hair out every time I see someone claim you can't pass linx when you have a Prime blend stable 8 hours or more. It drives me crazy because it has never been the case for me Linx is rough on temps but easy on stability it is roughly equivalent to Prime small FFT's in my experience and that's with 3 different processors and 2 different sets of ram. Also 2 different mobos... It's not that I don't believe anyone It's just that I would love to see some screenshots showing otherwise to satisfy my curiousity because in my experience I just don't see how it's possible and i've never seen anyone post screenshots saying otherwise so I continue to believe it's not possible.

I don't think this debate will ever get solved though even with screenshots, because there will always be people to claim otherwise