I've been lurking here for a while now (several months, actually), and I decided to build a good over-clocker with my tax return. Here are the prelimenary results of my labor, and thanks to everyone here, it took me a grand total of 16 minutes to settle into something comfortable:
Case - Antec 1200
MB – Asus P6T Deluxe/Palm OC
CPU – Intel Core i7 920 CPU (Batch#3842A555)@ 190x20=3.8GHz @ 1.25V w/Ultra120 Extreme running 2 120mm "Slipstream" Fans @ ~85CFA -- Max load temps are 51-48-52-49 and idles are 30-29-32-26 after 4 hours of prime
RAM – Corsair Dominator 12GB (6 x 2GB) DDR3 1066/1333 @ 1520MHz 9-8-8-24T
VGA – SLI – ASUS GTX295 (Yes, I got two. I don't know why.)
PSU – Tagan BZ1100 Modular
HDD – Western Digital Velociraptor 300GB (System Drive), and 3 Seagate 750GB Storage Drives
----------------------------------------------
AI overclock – Manual
CPU configuration
CPU Ratio Setting – 20
BCLK frequency – 190 (Temps were high 70s @ full load for 200)
PCIE frequency – 100
DRAM frequency – DDR3 1523MHz
UCLK frequency – 3047MHz
QPI frequency – 6857MHz
----------------------------------------------
Cpu voltage – 1.25v (I may still be able to go down on this. I was surprised this was so stable. To reduce temps, I went from 1.33 to this
)
CPU PLL voltage – 1.96v
QPI-Dram voltage – 1.35v
----------------------------------------------
IOH voltage – Auto
IOH PCIE voltage – Auto
ICH voltage – Auto
ICH PCIE voltage – Auto
----------------------------------------------
DRAM Bus voltage – 1.65v
DRAM REF voltage – Auto
CPU Differential Amplitude - 800mV
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*Remaining entries [Auto] or [Default]*
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As I noted above in some places, I did get the clock up to just over 4GHz running the RAM at just over 1600MHz, but i wasn't comfortable with the load temps it produced. After two hours or so of Prime, I came back and checked RealTemps, and the temps were in the upper 70s for all cores--not bad for a straight air setup. But, I'm not looking to go to WC anytime soon. So, I cranked it down a bit. This was my second attempt, and it looks like it's the winner.
It seems this particular batch of 920s is a good one, and I highly recommend the ASUS P6T to anyone looking to branch into OCing. I've played with the EVGA and Gigabyte before this, but I much prefer the P6T to the other two. Maybe it's because it's mine, though.
Any suggestions? I'll try to post some screens soon. (When I've had a chance to run Prime for at least 12 hours).
********UPDATE**********
Ok. So, I had a few errors after I went to bed last night. I cranked the CoreV back up to 1.30 and now Prime has been running for while with no errors. The Core temps went back up to 70-70-69-67, but I think I can live with that for now. Thanks again for all the greats guides/posts/etc.
Case - Antec 1200
MB – Asus P6T Deluxe/Palm OC
CPU – Intel Core i7 920 CPU (Batch#3842A555)@ 190x20=3.8GHz @ 1.25V w/Ultra120 Extreme running 2 120mm "Slipstream" Fans @ ~85CFA -- Max load temps are 51-48-52-49 and idles are 30-29-32-26 after 4 hours of prime
RAM – Corsair Dominator 12GB (6 x 2GB) DDR3 1066/1333 @ 1520MHz 9-8-8-24T
VGA – SLI – ASUS GTX295 (Yes, I got two. I don't know why.)
PSU – Tagan BZ1100 Modular
HDD – Western Digital Velociraptor 300GB (System Drive), and 3 Seagate 750GB Storage Drives
----------------------------------------------
AI overclock – Manual
CPU configuration
CPU Ratio Setting – 20
BCLK frequency – 190 (Temps were high 70s @ full load for 200)
PCIE frequency – 100
DRAM frequency – DDR3 1523MHz
UCLK frequency – 3047MHz
QPI frequency – 6857MHz
----------------------------------------------
Cpu voltage – 1.25v (I may still be able to go down on this. I was surprised this was so stable. To reduce temps, I went from 1.33 to this
)CPU PLL voltage – 1.96v
QPI-Dram voltage – 1.35v
----------------------------------------------
IOH voltage – Auto
IOH PCIE voltage – Auto
ICH voltage – Auto
ICH PCIE voltage – Auto
----------------------------------------------
DRAM Bus voltage – 1.65v
DRAM REF voltage – Auto
CPU Differential Amplitude - 800mV
----------------------------------------------
*Remaining entries [Auto] or [Default]*
----------------------------------------------
As I noted above in some places, I did get the clock up to just over 4GHz running the RAM at just over 1600MHz, but i wasn't comfortable with the load temps it produced. After two hours or so of Prime, I came back and checked RealTemps, and the temps were in the upper 70s for all cores--not bad for a straight air setup. But, I'm not looking to go to WC anytime soon. So, I cranked it down a bit. This was my second attempt, and it looks like it's the winner.
It seems this particular batch of 920s is a good one, and I highly recommend the ASUS P6T to anyone looking to branch into OCing. I've played with the EVGA and Gigabyte before this, but I much prefer the P6T to the other two. Maybe it's because it's mine, though.
Any suggestions? I'll try to post some screens soon. (When I've had a chance to run Prime for at least 12 hours).
********UPDATE**********
Ok. So, I had a few errors after I went to bed last night. I cranked the CoreV back up to 1.30 and now Prime has been running for while with no errors. The Core temps went back up to 70-70-69-67, but I think I can live with that for now. Thanks again for all the greats guides/posts/etc.
Last edited:
You have lurked well, young padawan.