AMD Phenom 9550 Quad core overclocking

[ModestGamer]

I know some of you folks have pushed these chips pretty hard.

I'd like to hear about your setting to get up there.

I am currently at 2.51 ghz and I know she has a bit more room left in her.

Please share what might have worked for you.

 

[LoneNinja]

You should provide us with more information about your system and your current BIOS settings for your overclock.

Personally I own a 9850, I've got it running 3.0Ghz with 1.325V. I only changed my multiplier and vcore since mine is a BE.

 

[ModestGamer]

You should provide us with more information about your system and your current BIOS settings for your overclock.

Personally I own a 9850, I've got it running 3.0Ghz with 1.325V. I only changed my multiplier and vcore since mine is a BE.

m4n78 pro MB AM3 socket.

ddr 2 ram 866 IIRC

everything else is pretty typical but I do have a 750wtt SLI certfied Corsiar power supply.

The CPU was a pull from a HP a6720y but I do not think it is a black edition.

system is almost 2 years old so everything is a bit fuzzy. Could pull it all down tonight and get parts numbers etc.

Stock voltage on th cpu 10.0 multiplier and 247hz for the fsb.

I am actually thinking about swapping the mother board and CPU for slightly more modern stuff and putting these parts in my wifes PC. she would love the speed boost for sure.

 

[maniac5999]

IK have a Kuma 7750BE (Phenom neutered to be a dual) I picked it up about a year and a half ago. I'm running 3.0ghz @ 1.2875v (240x12.5--upping the clock speeds up the L3 cache, but my board maxes out around 240) 3ghz and 1.3ish volts really seems to be the sweet spot for the newer stepping Phenom 1s. 3.1ghz requires 1.3125v for me, 3.125ghz requires more than 1.325v, and I've gone all the way up to 1.5v without getting 3.25ghz stable. To be honest, I'd never notice an extra 250mhz of speed, but I'd definately notice the difference in my electric bill.

 

[ModestGamer]

IK have a Kuma 7750BE (Phenom neutered to be a dual) I picked it up about a year and a half ago. I'm running 3.0ghz @ 1.2875v (240x12.5--upping the clock speeds up the L3 cache, but my board maxes out around 240) 3ghz and 1.3ish volts really seems to be the sweet spot for the newer stepping Phenom 1s. 3.1ghz requires 1.3125v for me, 3.125ghz requires more than 1.325v, and I've gone all the way up to 1.5v without getting 3.25ghz stable. To be honest, I'd never notice an extra 250mhz of speed, but I'd definately notice the difference in my electric bill.

You had better results with the multiplier higher then lower. Interesting.

May have to try that.

 

[formulav8]

I have in my tweaker/testing area a Kuma 7550 @ 2.5ghz stock that I can run @ 3ghz with ACC turned on and a simple voltage increase. I simply change the reference clock to 240mhz and enable acc on a 780/785 based mobo and run the northbridge at 2160mhz. This cpu is really not a slouch. It has no problems pushing enough frames in games and can handle basically everything most people do.

Since you have a lower clocked quad you may have a problem getting 3ghz and not being able to change the multiplier hurts as well. You may be able to get 2.7ghz or so with a voltage bump and if you have a board that can enable acc. You will most likely have to lower your northbridge multiplier as well to keep the cache/memory controller from running to high which will cause instability in itself. I would try targeting 2.7ghz. Lower your ram and northbridge multiplyers before getting started and then progressively increase the htt reference clockspeed from its default of 200mhz. When you get to the max cpu clockspeed raise the other northbridge/memory multipliers and see what you end up with.


Jason