matose
05-09-2009, 01:24 PM
Hy guys,
After playing a week or so with my Classified on air and SS, today I took out the "big guns", and I put it under LN2. The chip is C0 stepping, because my D0 is at Monstru's house and he won't give it back :D.
This i7 920 C0 chip is a good clocker on air (4450MHz SPI 32M and >4500MHz SPi1M) and on SS it did 4650MHz 3DMark 2006 easily. So, today he saw some LN2 . And my surprise was as big as yours, it surpassed all my expectations.... 5111MHz @ 1.52V @ -75oC. You can see the validation here (http://valid.canardpc.com/show_oc.php?id=561854). I also did a SPI32M @ 4776MHz @ 1.46v (http://www.hwbot.org/result.do?resultId=850464).
A little bclock playin': after some voltage & setting tweaking I obtained a bclock of 236Mhz on air (TRUE + Delta 120mm 113CFM). I was satisfied with that for the moment, but a couple of days ago I put the Vapochill LS on the CPU and the bclock scaled with the same settings as before to about 247Mhz. That was whoooooo..... :shocked:
Today I put LN2 and in the first phase, with the same settings, I obtained exactly the same bclock like on SS. The temperature was about -70C (because the CB was at -75 C). After some more voltage tweaking I obtained was I was looking for... to cross the 250Mhz bclock barrier. And here (http://valid.canardpc.com/show_oc.php?id=561862) you can see the validation. I saw even 252Mhz but the validation fail . Unfortunately I runned out of LN2 before I could tweak some more and aproach 255Mhz.
http://img.techpowerup.org/090509/IMG_3358.jpg
http://img.techpowerup.org/090509/IMG_3365.jpg
Kind regards,
matose
After playing a week or so with my Classified on air and SS, today I took out the "big guns", and I put it under LN2. The chip is C0 stepping, because my D0 is at Monstru's house and he won't give it back :D.
This i7 920 C0 chip is a good clocker on air (4450MHz SPI 32M and >4500MHz SPi1M) and on SS it did 4650MHz 3DMark 2006 easily. So, today he saw some LN2 . And my surprise was as big as yours, it surpassed all my expectations.... 5111MHz @ 1.52V @ -75oC. You can see the validation here (http://valid.canardpc.com/show_oc.php?id=561854). I also did a SPI32M @ 4776MHz @ 1.46v (http://www.hwbot.org/result.do?resultId=850464).
A little bclock playin': after some voltage & setting tweaking I obtained a bclock of 236Mhz on air (TRUE + Delta 120mm 113CFM). I was satisfied with that for the moment, but a couple of days ago I put the Vapochill LS on the CPU and the bclock scaled with the same settings as before to about 247Mhz. That was whoooooo..... :shocked:
Today I put LN2 and in the first phase, with the same settings, I obtained exactly the same bclock like on SS. The temperature was about -70C (because the CB was at -75 C). After some more voltage tweaking I obtained was I was looking for... to cross the 250Mhz bclock barrier. And here (http://valid.canardpc.com/show_oc.php?id=561862) you can see the validation. I saw even 252Mhz but the validation fail . Unfortunately I runned out of LN2 before I could tweak some more and aproach 255Mhz.
http://img.techpowerup.org/090509/IMG_3358.jpg
http://img.techpowerup.org/090509/IMG_3365.jpg
Kind regards,
matose