AMD Pii 940 OC

[chaosrealm93]

hey guys, i have a computer that i put together about a year ago and it has come to the time when i need a bit more power out of this old box. the CPU is originally clocked at 3.00GHz and i have already OC'd it to 3.4 +/- 0.01GHz. so far, ive only been changing the multiplier and voltage, but its still not enough. is there anything i can do to push this machine further? all my specs should be in my signature.

* 1.4V

 

[mpcrsc562]

wow, i was just looking up some info on this very same thing early this morning. from what i've read, it seems the phenom 2s with the b3 stepping are better overclockers than b2 stepping--which is what i have. i had a core contact freezer heatsink and the most i could get in overclock somewhat stabe was 3.6. yesterday, i bought a corsair hydro h50 (all-in-one liquid cooler) and thought that i might be able to push that overclock a little higher. i tried 3.9ghz first and bsod during windows load (windows 7). notched it down to 3.8ghz and bsod as soon as i hit 'enter' when i input my logon password. notched it down to 3.7ghz and was able to go into windows with no problem. problems started, however, when i tried to run prime95 and my system bsod every time. i went back to where i saw the info on the phenom 2 overclocking and every site that posted results, indicated that to get a stable running system at anything over 3.5ghz required the core voltage to be upped to 1.5v. (i stopped short of 1.5, upping mine no further than 1.475v) mainly, i just want to see if i could do it, but i'm happy at 3.5ghz (and stable @ 1.45v)

 

[chaosrealm93]

thats very cool!! i have a "2" stepping CPU as well! =) currently, im running a $35 air cooler and im actually impressed at its cooling preformance, considering it has little area on the heatsink that can dissipate the heat. but are most BSODs caused by high temps or instability? i was thinking of getting a new heatsink, seeing that im gonna have to use this computer for another few years, i might as well make the best of it...

 

[mpcrsc562]

these are my settings for my board that has me running stably @ 3.5ghz:
>ddr2 volts = 2.1
>NB volt = 1.3
>cpu volt = 1.45
>multiplier = 17.5
>NB freq = 1800mhz
>ht link freq = 1800mhz
>unganged

obviously, they might not work for you, but experiment--just don't be too aggressive. also, the difference between our system memories--you have 4gig to my 8gig--i had set my board to these settings at the suggestion of The Ram Guy @ the Corsair Support Forums because of my running all ram slots populated--you may not need to adjust your NB volt and your ram volts may automatically set via your epp settings.

make sure to disable cool n' quite and any q-fan controls that pertain to the cpu fan.

 

[chaosrealm93]

what does the NB freq and HT link freq do?

 

[mpcrsc562]

sorry i can't give a simple answer...

HyperTransportâ„¢ Technology

HyperTransport.org

HyperTransport - Wikipedia, the free encyclopedia

Terminology - Review Tom's Hardware : How To: Overclocking Your AMD Processor

 

[chaosrealm93]

damn!!! so close!! i tried the following and BSOD'd

3.5GHz
1.375V
18.5 multi
63 deg C

*i had to raise the "threshold" from 65 to 75, but it didnt seem like it did anything. it ran at 63 deg fine for a bit and when i went downstairs to get some food, i heard it restart... weird........ i guess i have to get a better cooler. or do you have any ideas?