QX9650 on Water

[sacha35]

If it was me i would not take that chip over 1.6v, even this is a tad high for just a water cooled system, i think you should be safe around the 1.55 mark though with this chip but at the end of the day it is upto you how far you want to push it and if you have the cash to replace it when things go bad.

[Speederlander]

OK,
I have come to another obstacle. Maybe you guys can help.
4.70 GHz @ 1.60 actual (1.65 bios selected) vcore.
It will post, but BSOD's during the OS boot screen. I know that it has been scaling greatly with voltage bumps, but I am honestly a little nervous about pumping more than 1.60 volts into this brand new QX9650. What do you guys think about longevity on these things? 1.60v + ok on water?

I am nervous, this isnt just a processor. At this pricetag its an investment.

1.6vcore on 45nm with water is too high for 24/7. Get phase and yeah that would be a good upper 24/7 limit, but not on water.

[fallwind]

1.6v is nearly 30% above stock volts! You guys have some big nads running that kind of vcore through a $1200 CPU. I chickened out at 1.45.

[railmeat]

OK,
I have come to another obstacle. Maybe you guys can help.
4.70 GHz @ 1.60 actual (1.65 bios selected) vcore.
It will post, but BSOD's during the OS boot screen. I know that it has been scaling greatly with voltage bumps, but I am honestly a little nervous about pumping more than 1.60 volts into this brand new QX9650. What do you guys think about longevity on these things? 1.60v + ok on water?

I am nervous, this isnt just a processor. At this pricetag its an investment.

What do you guys think about longevity on these things? 1.60v + ok on water?

no way 1.45v max 4-4.2(like fallwind has his).stick with your AMAZING temps and voltages to run 4.0ghz stable 24\7.also like to say nice review man.others will tell u to fry your chip cause its not theres and just want to see more speed for kicks. but i think u have a nice setup and 4ghz 24\7 with nice voltage\temps is a complete win\win.

[Biker]

What do you guys think about longevity on these things? 1.60v + ok on water?

no way 1.45v max 4-4.2(like fallwind has his).stick with your AMAZING temps and voltages to run 4.0ghz stable 24\7.also like to say nice review man.others will tell u to fry your chip cause its not theres and just want to see more speed for kicks. but i think u have a nice setup and 4ghz 24\7 with nice voltage\temps is a complete win\win.

/signed

[strange|ife]

very nice! 1.6 is fine as long as your temps are good for long term use. Wish i had that kinda of money to throw around right now, would love to get my hands on one of these

[GRAFiZ]

FANTASTIC!!!

However, as with what others have said... no way in hell would you get me to push much in the way of voltage through these new chips, at .45nm there's just WAY too much to risk, remember, you can fry a CPU even when the temps are perfectly within limits.

I would NEVER exceed 1.5v 24/7 on .45nm even with water.

For real.

I think many others here will back me up on that.

[nfm]

From my experience voltage will not kill your cpu. I ran my Q6600 1.65v on air for many hours. Either your cpu will be unstable because of the temp. or it will have to much volts and refuse to boot, prime etc.

[GRAFiZ]

From my experience voltage will not kill your cpu. I ran my Q6600 1.65v on air for many hours. Either your cpu will be unstable because of the temp. or it will have to much volts and refuse to boot, prime etc.

Just how much is "many hours"?

Two? Five? Tenty Four?

I'm just saying, with the small core design, the high price tag... pumping volts into a chip that so few have practical experience with is a very dangerous thing to do.

Eventually, upping voltage is going go to bite us all in the butt.

[hitokiri69]

I recall a survey thread from a while back, titled smth like "Sudden Conroe Death Syndrome" where the poster was interested on finding out voltages ppl were running 24/7, and whether electromigration was having any effect on the chips running on crazy OC's. That thread must've never gone past the first page. I'd say that tells alot

[Bigchrome]

Had an E6600 at 1.85v on water for days and nothing happened.. Don't worry about 1.5 or even 1.7 for 24/7

[dominick32]

Yes, but this isnt Conroe guys. This is Yorkfield, a 45nm shrink process that can run at lower vcore, and please correct me if I am mistaken. Intel is no longer using silicon but rather high-K dielectric halfnium with these Yorkfields meaning this is a new technology and we do not have any failure from voltage data.

PS- Also, at 1.65vcore and 4.68 GHz, my temps were 54*C idle in the bios.. This is just getting too dangerous now..

[Jacky]

The stock voltage is rather high for 45nm; maybe try some extreme-undervolting if your motherboard supports it?

[flopper]

word dont need much mhz.
4ghz stock is simply amazing.

running on water 4.5ghz seems also like a nice deal.
and even with that volt up to 4.7ghz are again amazing.

The old conroe deals have not a chance to get sold after these chips gets out for overclockers.
Waiting for the locked ones sadly tho.

Great numbers dom

[xgman]

Finally figured it out. For some reason I think FSB may be having an affect on my processor at high clocks. I am currently using vista

I have found the same thing about the fsb with mine. My QX6850 could handle significantly higher FSB than the Yorkie can, even when using phase cooling. It must be the extra cache. I am still trying to figure out how much voltage is relatively safe for the 9650 if it's cooled well, and where the diminishing returns of higher voltage start.

[xgman]

OK,
I have come to another obstacle. Maybe you guys can help.
4.70 GHz @ 1.60 actual (1.65 bios selected) vcore.
It will post, but BSOD's during the OS boot screen. I know that it has been scaling greatly with voltage bumps, but I am honestly a little nervous about pumping more than 1.60 volts into this brand new QX9650. What do you guys think about longevity on these things? 1.60v + ok on water?

I am nervous, this isn't just a processor. At this pricetag its an investment.

I only need 1.55ish to get 4800 under phase, so you are probably over volting it. My gut feeling is that even on phase 1.6 and above will yield little further results with a much higher risk of burnout.

It would be interesting to know just how risky this overvolting business really is regardless of temps. I don't see that much data on the correlation of voltage and burnouts.


DOMINICK: which program are you reading the "actual" vcore from in Vista?

[Zeus]

Come on guys, don't be a :banana::banana::banana::banana::banana:, Stoolman gave 2.15V to a Yorkie.

[xgman]

Come on guys, don't be a :banana::banana::banana::banana::banana:, Stoolman gave 2.15V to a Yorkie.

Stoolman's gonna fall off his "stool" when his yorkie burns in hell!

[Zeus]

here is the last Superpi1 M this processor produced before it died... RIP...Guess it did not like 2,175V...

[Yoxxy]

Intel whitepaper says 1.45v, said 1.55v on Conroe before they started to degrade.

I trust the whitepaper I guess.

[nFo]

What's the max FSB of this cpu ?
470 ?

[dominick32]

What's the max FSB of this cpu ?
470 ?

Dissapointingly the highest FSB I attained on this processor under high cpu clocking was 445, anything higher will FREEZE at post. So, I kept on upping the multi. Please note also: My X38-DQ6T was good to 535 FSB on my old E6850 cpu. So, this FSB wall is definitely CPU limited.

[dominick32]

It also looks like I am going to give up on clocking 4.70 GHz because it looks like the concensus from most of you guys are telling me that its not a good idea to use more than 1.60 volts on 45nm.

So, I think I will be happy at 4.3 GHz under 1.50v

[Yoxxy]

It also looks like I am going to give up on clocking 4.70 GHz because it looks like the concensus from most of you guys are telling me that its not a good idea to use more than 1.60 volts on 45nm.

So, I think I will be happy at 4.3 GHz under 1.50v

That is where I am at too

[oscar3d]

So Dominick,

after your findings, what do you think is the sweetspot on this chip?

I've found the safest and sweetest overclocking @ 4.00Ghz that is:

10x400 @ 1.4Vcore. I'm thinking of a 24/7 setup.

But I've seen in one of your pictures that you were able to have 10x400 and running at a stunning 1.365? Did that worked well? Did you set that stock volts manually or you set your mobo to AUTO on the Vcore?

Also I want to see where the whitepaper is (anyone has a link). I just went to the intel processor finder, and it tells me that the voltages on this chip range between 0.85V-1.365V.