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OCing a Phenom 9750 on a ASUS M3A32-MVP WiFi/AP


riggnix
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Hey guys,

 

I'm trying to OC my Phenom 9750.

FSB 219MHz works perfectly Prime95 stable with 1,375 VID (1,36V real).

FSB 220MHz doesn't boot even with a VID of 1,45V.

 

Northbridge and HT multipliers and RAM dividers are lowered as you can see in my CPU-Z validation (NB multi = HT multi).

CPU-Z Validator 3.1

Prime95 temperatures

 

Other Informations:

PSU: Antec TruePower Trio 650W

Case: Antec Twelve Hundred (all fans 'high')

CPU Cooler: Thermalright Ultra 120 TRUE black

CPU Fans: 2x SilenX IXP-76-18 120mm 96cfm

 

A few ideas would be pretty helpful ;-)

 

And btw: How high should i set the CPU VID maximal for everyday use?

 

greetings

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Hey guys,

 

I'm trying to OC my Phenom 9750.

FSB 219MHz works perfectly Prime95 stable with 1,375 VID (1,36V real).

FSB 220MHz doesn't boot even with a VID of 1,45V.

 

Northbridge and HT multipliers and RAM dividers are lowered as you can see in my CPU-Z validation (NB multi = HT multi).

CPU-Z Validator 3.1

Prime95 temperatures

 

Other Informations:

PSU: Antec TruePower Trio 650W

Case: Antec Twelve Hundred (all fans 'high')

CPU Cooler: Thermalright Ultra 120 TRUE black

CPU Fans: 2x SilenX IXP-76-18 120mm 96cfm

 

A few ideas would be pretty helpful ;-)

 

And btw: How high should i set the CPU VID maximal for everyday use?

 

greetings

 

welcome to my world, with my phenom9750 ive gotten 2800ghz stable at 1.35 voltage so your voltage probly isnt your issue.. this is a hard chip to overclock i cant get past 2.8 without instabilities... i see youve done all the right stuff hmm..

i guess its possible the chipset on the mobo isnt liking the overclock? i had to enable svid support in my bios before i could even been to overclock but i doubt thats your issue but u can try

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ok, i've found the problem...

 

HT Link and NB didn't do any more than 1800MHz

 

lowered the multi and my highest FSB was more than 270.

 

So i got it Prime stable @ 3060MHz at 255*12 with ddr @ 1020 effective and 1785 NB and HT.

Vcore: 1,44V

 

660MHz overclock, i'm happy ;-)

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ok, i've found the problem...

 

HT Link and NB didn't do any more than 1800MHz

 

lowered the multi and my highest FSB was more than 270.

 

So i got it Prime stable @ 3060MHz at 255*12 with ddr @ 1020 effective and 1785 NB and HT.

Vcore: 1,44V

 

660MHz overclock, i'm happy ;-)

very jelous i cant get mine to go higher than 2.8 without a crash i think its my RAM though

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Guest ajmatson

The FSB on an AMD processor is really the reference clock for all components. The HT and Northbridge on some boards are picky so just keep playing with it and you will reach your sweetspot.

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  • 2 weeks later...

i got a little bit further...

 

so my highest core clock which is completly stable still is 3060 MHz @ 1,44V (255x12; 1,45 VID)

but my HT and NB now are at 2040 MHz with 1,3V CPU NB VID

 

i also got it prime stable (only testet 30 minutes) at 3108MHz @ 1,44V (259x12; 1,45 VID); 2072MHz HT

 

but everything more than 3060 will get me random system freezes... even without load.

found something abt this in the web and highered the southbridge voltage to get rid of the freezes @ 3060, but on higher clocks it doesn't work...

 

my screenshot @ 3108MHz (Prime / CPU-Z / SpeedFan)

Screenshot

 

maybe someones got an idea to get rid of the freezes?

 

greetz

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