Trying to OC a 955

Densityy · 12 May 2010 at 23:10

So i used the AMD Overdrive Auto Clock or something having no idea what it will do / what will happen and this is what happened..

Guessing i'm on 3.5GHz 43c on 50%..

Havn't done prime95 or anything just wondered if this is good or not or do you guys think i should scrap overdrive and read up on some overclocking guides?

rumble291 · 12 May 2010 at 23:18

Personally I use the BIOS as a base for my overclock. I tweak with software in my case its Turbo V which is very useful! Once I found the highest most stable overclock I then use the BIOS to store my overclock so no matter what I do its always going to be running overclocked. Using auto clock is basically testing to find the most stableish clock speed.

Really your looking for:

Settings stored in BIOS
As lower Vcore Voltage as you can get without loosing too much stability.
7-9 Hours on Prime95 or OCCT.
Good under load temps of under 60c.

The black editions are easy to overclock as all you do is increase the muliplier, then add a little voltage when you hit the wall of blue screens and errors. Don't forget to watch the temps though.

Your temp seems ok, what cooler are you using?

Read up on the forum about it, if you are unsure there is some good information.

adwol48 · 12 May 2010 at 23:25

personally again i'd use the bios, just by changing the multiplier to 18 you can get 3.6ghz and i'd say all 955's would be stable at the speed, if you have a new c3 revision you might be able to hit 4ghz if you can keep the temps down. I did have my c2 reviosion 955 at 3.8ghz stable but only used that for benchmarking anything past that and the temps would get too high for my aircooled heatsink and i'd have to use too much voltage which i didnt feel comfortable doing. if you want take a look at my cpu z signature it'll show my mulitplier etc.

Densityy · 12 May 2010 at 23:29

rumble291 said:
Personally I use the BIOS as a base for my overclock. I tweak with software in my case its Turbo V which is very useful! Once I found the highest most stable overclock I then use the BIOS to store my overclock so no matter what I do its always going to be running overclocked. Using auto clock is basically testing to find the most stableish clock speed.

Really your looking for:

Settings stored in BIOS
As lower Vcore Voltage as you can get without loosing too much stability.
7-9 Hours on Prime95 or OCCT.
Good under load temps of under 60c.

The black editions are easy to overclock as all you do is increase the muliplier, then add a little voltage when you hit the wall of blue screens and errors. Don't forget to watch the temps though.

Your temp seems ok, what cooler are you using?

Read up on the forum about it, if you are unsure there is some good information.

adwol48 said:
personally again i'd use the bios, just by changing the multiplier to 18 you can get 3.6ghz and i'd say all 955's would be stable at the speed, if you have a new c3 revision you might be able to hit 4ghz if you can keep the temps down. I did have my c2 reviosion 955 at 3.8ghz stable but only used that for benchmarking anything past that and the temps would get too high for my aircooled heatsink and i'd have to use too much voltage which i didnt feel comfortable doing. if you want take a look at my cpu z signature it'll show my mulitplier etc.

Okay thanks, so i'm better off using the bios to overclock.

I've got 2 case fans and a titan fenrir i think its called, my aim is 3.8GHz but not sure if that is posible i'll give it ago, i'm estimating that the load at the moment will be about 50c 100%. How high can the temp go on the 955?

Angst · 12 May 2010 at 23:42

Densityy said:
Okay thanks, so i'm better off using the bios to overclock.

I've got 2 case fans and a titan fenrir i think its called, my aim is 3.8GHz but not sure if that is posible i'll give it ago, i'm estimating that the load at the moment will be about 50c 100%. How high can the temp go on the 955?

i believe that the max temp is 62c

adwol48 · 12 May 2010 at 23:44

i think the max core temps are about 60 or 62C for the 955, when i had my 955 at 3.8ghz the core temps under load using ibt2 didnt get above 55c and that was using a sunbeam core contact freezer.

Densityy · 12 May 2010 at 23:45

phill0i said:
i believe that the max temp is 62c

Ok thanks, so what would i be putting in my bios then 218freq x17multi?

Angst · 12 May 2010 at 23:46

Densityy said:
Ok thanks, so what would i be putting in my bios then 218freq x17multi?

leave the freq at default 200 and just use the multi, you should get 18.5x which is about 3.7ghz on stock volts.

adwol48 · 12 May 2010 at 23:47

i'd drop the bus speed back to 200 and then increase the multi to 18 that would give you an easy 3.6ghz to see if it's stable (cant see why it wouldnt be) that way you can later go back and increase the bus speed if you want too,

Densityy · 13 May 2010 at 15:58

Pretty bad temps?

Didn't change anything from last night just wanted to see how well it did in Prime95 and well it went from 30c to 57c in about 7mins..

DELETED_83755 · 13 May 2010 at 18:41

As the others have said overclocking through the bios by using the multiplier would be the first thing I would do. You should be able to get 3.6 ghz with just the multiplier of 18.

You will have to start from stock and increase the multiplier and then see if its stable and bump up the voltage if the overclock fails. Its pretty much that simple.

The more experienced overclockers will push it even more and higher voltages as they usually run the chips for a couple of years and then move on to a new one.