P6T deluxe V2 to clock to 3.8
- Thread starter smelly
- Start date
Everyone's CPU is different but 3.8GHz should be fairly easy for a D0 chip. I have a P6T V2 and to get 4GHz all I had to change was the following:
AI Overclock Tuner - Manual
CPU Ratio - 20x
BCLK - 200MHz
DRAM - DDR3-1603MHz
Turbo Mode - Disabled
CPU Voltage - 1.22500v
QPI/DRAM Voltage - 1.27500v
Load Line Calibration - Enabled
I left all other CPU options enabled like HyperThreading, VT, Prefetcher, SpeedStep, C1E etc.
That was it, a perfectly stable 4GHz, although my CPU voltage seems to be a fair bit lower than what most people need for 4GHz so you might well need a bit more voltage to be stable.
If I were you shooting for 3.8GHz I'd suggest trying the same settings with either a 19x multiplier (200x19=3800) or a 190MHz BCLK (190x20=3800). Keeping the BCLK at 200 will mean you have the option of running your RAM at pretty much bang on 1600MHz though.
AI Overclock Tuner - Manual
CPU Ratio - 20x
BCLK - 200MHz
DRAM - DDR3-1603MHz
Turbo Mode - Disabled
CPU Voltage - 1.22500v
QPI/DRAM Voltage - 1.27500v
Load Line Calibration - Enabled
I left all other CPU options enabled like HyperThreading, VT, Prefetcher, SpeedStep, C1E etc.
That was it, a perfectly stable 4GHz, although my CPU voltage seems to be a fair bit lower than what most people need for 4GHz so you might well need a bit more voltage to be stable.
If I were you shooting for 3.8GHz I'd suggest trying the same settings with either a 19x multiplier (200x19=3800) or a 190MHz BCLK (190x20=3800). Keeping the BCLK at 200 will mean you have the option of running your RAM at pretty much bang on 1600MHz though.
Last edited:
ill try that out and see if i can get it stable!
i get some nasty temps befor, repiled the thermal paste 3 times now, used the AC5 and noctua brand, noctua wins! 
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I'm running 3801.0MHz at the minute, stress testing with Prime95. I've a stock multiplier, BCLK at 181, CPU volts at 1.19375, DRAM Bus voltage at 1.60, and QPI/DRAM Core Volt at 1.61250. Using Noctua paste, I've got core temps steady at 76, 73, 78, 73. DRAM frequency is 724, which I think shows up in the BIOS as DDR3-1448. It's a D0 i7-920 on an ASUS P6T Deluxe v2, running the latest BIOS, which I think is 0504.
I set the BLCK at 190, the DDR3 speed at 1448, and used the following voltages:
CPU Voltage => 1.35
CPU PLL Voltage => 1.96
QPI/DRAM Core Voltage => 1.35
DRAM Bus Voltage => 1.64
Then I booted the system, fired up CPU-Z, Core Temp, Prime 95 and ASUS Turbo-V, steadily turning things down until I was at 3.8GHz. Temps were > 80, but bringing down the volts really brings down the temps (I read this somewhere on the OC Forums, so thanks to that poster).
YMMV, but HTH
I set the BLCK at 190, the DDR3 speed at 1448, and used the following voltages:
CPU Voltage => 1.35
CPU PLL Voltage => 1.96
QPI/DRAM Core Voltage => 1.35
DRAM Bus Voltage => 1.64
Then I booted the system, fired up CPU-Z, Core Temp, Prime 95 and ASUS Turbo-V, steadily turning things down until I was at 3.8GHz. Temps were > 80, but bringing down the volts really brings down the temps (I read this somewhere on the OC Forums, so thanks to that poster).
YMMV, but HTH
I'm running 3801.0MHz at the minute, stress testing with Prime95. I've a stock multiplier, BCLK at 181, CPU volts at 1.19375, DRAM Bus voltage at 1.60, and QPI/DRAM Core Volt at 1.61250. Using Noctua paste, I've got core temps steady at 76, 73, 78, 73. DRAM frequency is 724, which I think shows up in the BIOS as DDR3-1448. It's a D0 i7-920 on an ASUS P6T Deluxe v2, running the latest BIOS, which I think is 0504.
I set the BLCK at 190, the DDR3 speed at 1448, and used the following voltages:
CPU Voltage => 1.35
CPU PLL Voltage => 1.96
QPI/DRAM Core Voltage => 1.35
DRAM Bus Voltage => 1.64
Then I booted the system, fired up CPU-Z, Core Temp, Prime 95 and ASUS Turbo-V, steadily turning things down until I was at 3.8GHz. Temps were > 80, but bringing down the volts really brings down the temps (I read this somewhere on the OC Forums, so thanks to that poster).
YMMV, but HTH
It safe to say, other people setting does work for everyone! MAN! getting this stupid I7 stable ****ing me off. like a damn puzzle. anyone got any tips on overclocking
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im in the same boat as you, by keeping many things on auto i can get it to 3.8, 4.0 and even 4.2 but as soon as i run prime the multiplier etc fluctuates down to 16x even though i have speedstep etc turned off.
mine is currently
multiplier 21 x
blck 200
voltage 1.416
the rest is auto for now as ive tried so many settings and nothing is working for me... well it works, but as soon as i run prime it fluctuates.
mine is currently
multiplier 21 x
blck 200
voltage 1.416
the rest is auto for now as ive tried so many settings and nothing is working for me... well it works, but as soon as i run prime it fluctuates.
dude, your volts look way to high! your temp must go to the 90c!
try around 1.35 downwards!
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mine was set to auto...
im now trying the settings that were posted in another thread.
21x
191
vcore 1.28
this sees 4ghz and will see if its stable, not sure why the multiplier keeps fluctuating though. temps were 85 on load and 40 idle at the previous volts.
i think im going to pull it all out, lap the cooler and re apply paste though.
im now trying the settings that were posted in another thread.
21x
191
vcore 1.28
this sees 4ghz and will see if its stable, not sure why the multiplier keeps fluctuating though. temps were 85 on load and 40 idle at the previous volts.
i think im going to pull it all out, lap the cooler and re apply paste though.
your temps was high because of your volt. you'll see a big difference in temp because of low volts. but people need to remember you need a lot of intake air to oc
Soldato
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The movement in your multiplier with speedstep off might have been throttling from the inbuilt protection features, throttling to cool the cores down as they overheated.
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ah ok, think im gonna have to take it all apart and reseat the cooler, ill lap it as well to get it as flat as poss.
used the AC5 and noctua brand, noctua wins!
Arctic silver 5 is WAY better than the tat noctua send with their coolers
use it - let it cure properly and the difference is massive
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- 168
what are your temps sitting at?
i managed to get to 4ghz using 21x191 with 1.34v
I turned off the speedstep, enabled load line, and left everything else on auto as i dont know what to do with the rest, but i ran prime95 and everything was fine. temps hit around 78deg on load, 35-39 roughly on idle
(this was after i lepped the fenrir etc)
well think to yourself first, do you really need 4gz?
how long did you run prime for? must be for at least 24 hours. i ran mine for 24 hours, i had a steadt temp of 68. that not with all my fans turned on( which i didnt realise)
no errors. mine as speedstep and all the other function on.
cos im stable at 3.2 i got a base point to oc more.
i got XMP profile at 1600mz, mine volts are at cpu 1.20, Dram bus volts 1.64, QPI/DRAM volts 1.4. CPU pll volts at 1,8. everything else on auto.
]
Temps of 78 seem way to high and running prime for how long? i can get 4 gz not so stable for 1 hour with temps at 70c. so you need to think about your volts levels.
most reviews say it either par with Ac5 or a little better by 1-2.
do u mean the burn in time.
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i just had it running for 3 hours at the longest time, i didnt think id need to go 24...
ive just ripped a dvd, had about 7 apps open and various other things going and my pc was using around 80% cpu with temps at just 57degress
and thats about the most work id be doing with it... and of course i need 4ghz... personally id go more if i knew how and could do it safely.
from what everyone else is posting i though high 70's was ok for 4ghz... the leap in temps from 4 to 4.2 was massive, over 10 degrees.
i haven t been able to find a guide i can understand, and its hard trying to figure it all out so ive left most of the stuff at auto.
ive just ripped a dvd, had about 7 apps open and various other things going and my pc was using around 80% cpu with temps at just 57degress
and thats about the most work id be doing with it... and of course i need 4ghz... personally id go more if i knew how and could do it safely.
from what everyone else is posting i though high 70's was ok for 4ghz... the leap in temps from 4 to 4.2 was massive, over 10 degrees.
i haven t been able to find a guide i can understand, and its hard trying to figure it all out so ive left most of the stuff at auto.
ok 4gz sound good then if you need it for all that application! but i dont think you have a stable 4 gz! a stable 4gz is like no errors running for 12hours to 24 hours, some people run it for a week! if your 8 cores still run after all that, u have a stable 4 gz, 3 hours isnt enough for a stable test.
did you have any core fails? errors? running 3 hours on 78c... 12 hours will make a big difference! thing will heat up probily do more damage then good. even tho your not always using 100% load, you end up getting errors in your computer.
start small first. start at 3.5gz. find good temps! then start slowly going up. starting at 4gz right way you wont know what kind of temp you can get using lower volts
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hmm i think your right as my temps keep going high, i think part of it is the gpu as well so i might butcher my old case and make a divider so the bottom and top half of the case are seperate with seperate airflow...
can i ask, do you knwo what i would set my ram at if i follow your settings?
i have the ocz gold 1333mhz
http://www.overclockers.co.uk/showproduct.php?prodid=MY-151-OC&groupid=701&catid=8&subcat=1390
if i stick with your settings at least i know it will be running right, then i can work on getting my cooling better... with the fenrir and antec 300 it should be giving low temps.
can i ask, do you knwo what i would set my ram at if i follow your settings?
i have the ocz gold 1333mhz
http://www.overclockers.co.uk/showproduct.php?prodid=MY-151-OC&groupid=701&catid=8&subcat=1390
if i stick with your settings at least i know it will be running right, then i can work on getting my cooling better... with the fenrir and antec 300 it should be giving low temps.