Core i7 920 rev D0 stepping 5 :)

**ReverendMaynard** · 03-24-2009, 11:57 AM

Originally Posted by roller11

Something is wrong! 24/7 for my C0 920 is 4.01Ghz, 1.184 Vcore and I'm seeing only 46C at idle, maybe 55C tops in games (RealTemp). Even the stock HS should do better than that. I've witnessed a 920 that looked normal, but it would get up to 60C pretty quickly, it was obviously defective. You either have an overheater, or your cooler is severely deficient.

is that with QPI slow mode?

**ewitte** · 03-24-2009, 12:11 PM

How does Intel RMA work? Its obviously either severe amp leakage or bad IHS contact. Even with the stock cooler you shouldn't have to undervolt to keep it under 90-100C. I was excited this one runs with such low vcore settings but the heat has been a big issue even on good watercooling because the x21 multiplier throttles as low as 80C.

**Falkentyne** · 03-24-2009, 12:39 PM

ewitte:
RMA that chip. its defective.
I think that's clear now.
Intel won't refuse an RMA for that. .95v for 80C prime....obvious defect on the IHS.

**ewitte** · 03-24-2009, 01:14 PM

Thanks may check with Micro Center to see if they would swap it first. Not sure because it may be over 30 days now. I just kept upgrading my cooling until I was on water lol. Crap I was even checking out LN2 prices in the area LMAO.

EDIT: Quick question this chip is one of the best with low voltage I've seen. Would it be a better idea to void the warranty and remove the IHS?

**yaddam205** · 03-24-2009, 07:06 PM

Originally Posted by ewitte

Thanks may check with Micro Center to see if they would swap it first. Not sure because it may be over 30 days now.

If you're nice and calmly tell them the issue without yelling and screaming you should get a replacement.

**Waxking1** · 03-24-2009, 10:37 PM

Tankguys,
Why did you charge Credit Cards already if you don't have the item in stock or at least shipped and on the way to you? Is this your normal practice?

**chuxle** · 03-25-2009, 07:56 AM

Originally Posted by Waxking1

Tankguys,
Why did you charge Credit Cards already if you don't have the item in stock or at least shipped and on the way to you? Is this your normal practice?

I agree. Credit card cannot be charged in this manner nor can it be charged to place a hold on an "out of stock" item with multiple ETA dates.

**TankGuys** · 03-25-2009, 08:52 AM

Originally Posted by Waxking1

Tankguys,
Why did you charge Credit Cards already if you don't have the item in stock or at least shipped and on the way to you? Is this your normal practice?

This was a consequence of the push in ship date, they were charged when we thought we'd have them in hand that week. It got pushed, so the card ended up being charged a little early. It's a matter of a few days though, not spanning the standard grace period so nobody is shelling out finance charges, and per our e-mail, everyone has the option to cancel - so I don't suspect it's really a big deal.

**ewitte** · 03-25-2009, 02:37 AM

Originally Posted by yaddam205

If you're nice and calmly tell them the issue without yelling and screaming you should get a replacement.

Not in any hurry. I may wait a few weeks to guarantee D0 and RMA with intel selling the return on ebay. A guess this is typical XS behavior but I saw a problem and made it my duty to fix it at all costs instead of addressing it lol

**roller11** · 03-24-2009, 06:07 PM

Originally Posted by ReverendMaynard

is that with QPI slow mode?

Did I say 24/7? 1.184 is also good for prime.

**ReverendMaynard** · 03-25-2009, 09:40 AM

Originally Posted by roller11

Something is wrong! 24/7 for my C0 920 is 4.01Ghz, 1.184 Vcore and I'm seeing only 46C at idle, maybe 55C tops in games (RealTemp). Even the stock HS should do better than that. I've witnessed a 920 that looked normal, but it would get up to 60C pretty quickly, it was obviously defective. You either have an overheater, or your cooler is severely deficient.

Originally Posted by roller11

Did I say 24/7? 1.184 is also good for prime.

Above is what I quoted and was referring to roller. I've been in this i7 game for a while and I know 1 hour of prime is not something I would tote at 24/7.

Still nice clocks/volts though.

**naokaji** · 03-25-2009, 10:11 AM

Originally Posted by ReverendMaynard

1 hour of prime is not something I would tote at 24/7.

QFT.

My I7 needs 0.05V more for actual 24/7 100% load stability compared to just a few hours 100% load stability.

Anyway, can't wait until D0 920's are out in a meaningful way (read: shops guaranteeing that you get one with actual stock), just hope I can get enough for my crappy clocking 940 on fleabay to pay for a new 920.

**roller11** · 03-25-2009, 06:33 PM

Originally Posted by ReverendMaynard

Above is what I quoted and was referring to roller. I've been in this i7 game for a while and I know 1 hour of prime is not something I would tote at 24/7.

Still nice clocks/volts though.

thanks for the compliment, rev. You're one of the top, most helpful posters in this forum, so coming from you it means a lot.

Anyhow...
My awkwardly worded post needs clarification, I didn't mean I primed for 24 hours straight.
Usually, guys will push their chips to voltage/heat extremes to get an impressive prime achievement, then back off their voltage for 24/7 operation.
If I did the same thing, (down volt after prime at 4.01Ghz/ 1.184 vcore) then no telling how low vcore I could go for 24/7 @ 4.01 Ghz. I never bothered to see how low vcore I can go since 1.184 is plenty low enough.

**ReverendMaynard** · 04-20-2009, 08:23 AM

Originally Posted by roller11

thanks for the compliment, rev. You're one of the top, most helpful posters in this forum, so coming from you it means a lot.

Anyhow...
My awkwardly worded post needs clarification, I didn't mean I primed for 24 hours straight.
Usually, guys will push their chips to voltage/heat extremes to get an impressive prime achievement, then back off their voltage for 24/7 operation.
If I did the same thing, (down volt after prime at 4.01Ghz/ 1.184 vcore) then no telling how low vcore I could go for 24/7 @ 4.01 Ghz. I never bothered to see how low vcore I can go since 1.184 is plenty low enough.

1.184v at 4ghz is beautiful. I've actually taken the opposite approach and have been pushing my 24/7 max clocks and not really worrying about voltages anymore lol. I'll say this though, lapping this 920 has made a nice improvement. 4.57ghz HT off, 1.55v now might peak at 80C running wprime1024m, when before that would take it into the low 100's

Linx? eff that action lol.

Thanks for the compliment though, coming from you that's pretty nice to hear because imo, you're 10x more valuable to these forums.

**roller11** · 04-21-2009, 08:16 AM

Originally Posted by ReverendMaynard

I'll say this though, lapping this 920 has made a nice improvement. 4.57ghz HT off, 1.55v now might peak at 80C running wprime1024m, when before that would take it into the low 100's

Linx? eff that action lol.

.

The flatness of the heat sink certainly makes a difference, I know cause I've had good results lapping various HS. I've never lapped a CPU cause the warranty goes right out the window. Then again, perhaps I'll look into it since in a way, my CPU is irreplaceable anyway. If you want, you can PM me about particular technique for lapping a CPU.

BTW, you got me wondering about running in slow mode vs full speed QPI.
Turns out, it's a function of motherboard. I've tried eight different mobos, and only the two giga byte boards make a difference. That is,
I've validated 222x21 in SM with the giga UD5 but with full speed, I could do only
220x21. With the biostar x58, asus, DFI, and MSI boards, I can get 220-222x21 (depending on board) at full speed. In fact, I just set my personal record with the biostar x58 with full speed QPI.

**ReverendMaynard** · 04-21-2009, 10:07 AM

Originally Posted by roller11

The flatness of the heat sink certainly makes a difference, I know cause I've had good results lapping various HS. I've never lapped a CPU cause the warranty goes right out the window. Then again, perhaps I'll look into it since in a way, my CPU is irreplaceable anyway. If you want, you can PM me about particular technique for lapping a CPU.

BTW, you got me wondering about running in slow mode vs full speed QPI.
Turns out, it's a function of motherboard. I've tried eight different mobos, and only the two giga byte boards make a difference. That is,
I've validated 222x21 in SM with the giga UD5 but with full speed, I could do only
220x21. With the biostar x58, asus, DFI, and MSI boards, I can get 220-222x21 (depending on board) at full speed. In fact, I just set my personal record with the biostar x58 with full speed QPI.

No need to lap the GTZ though, they are as flat as can be. During the various lapping stages that I did with this 920, the evidence of a severely warped IHS as I wore away the high spots was pretty clear. It took a good hour, going from 400g - 600g - 1000g - 1500g to get it down to where I deemed it as perfectly flat. Highly recommended if you don't give a rats ass about warranty