My first proper overclock :)

[Big.Wayne]

ran prime 95 its passed all 5 tests twice so i assume its prime stable?.

You want to be running the prime95 torture test, it just keeps on going. Stepping stones time wise are 1 hour, 2 hour, 6 hour, 12 hour, 24 hour.

somtimes it can take over 24hours for it to find a error but if it doesnt up to 3 hours its normally stable

Not really, I seen Prime/Orthos error out quite a bit after 3 hours. I've seen Prime run 'blend' perfectly for 12 hours and then go and fail 'large-FFTs' after 6.

Everyone had their own definition of what is 'stable', as a rule of thumb I would say throw anything and everything at your PC, go out of your way to provoke it to crash, run Prime/Orthos in the background and then start looping 3DMark, throw a 32MB Super-PI in their, OCCT etc.

 

[Mark A]

Thanks for the info . I have been doing the torture test, i think its the mixed one that tests a bit of everything.

Ive let it run for over an hour on 248 earlier on so I'll try for 250 again tomorrow. Ive nudged the core voltage up to 1.425 and temps have risen slightly but nothing to worry about.

I think 250 is as high as I'm going to get on air, unless any of you can spot anything Ive done wrong?. I need a better cooler if I'm going to try and clock any further which I'm not prepared to do as I'll be upgrading next year anyway.

 

[keogh]

Yeah don't say its orthos stable til it has run for 15hrs at least, my old X2 4400+ during overclock would die at 3hrs 5hrs 8hrs, was only when I got it running for 24hrs (think it was more in the end) I could safely say it was stable.

Just keeping up the vcore til ya temps reach 60c max under SP2004/Orthos load, then stop.

My 4400+ got to 59c full load at 2.6ghz and that was the best I could do on air. IIRC the max vcore I was willing to go to was 1.5/1.55v after being told this by a few clever ones on here!

I'm in no way at all a advanced overclocking, but its great fun doing it isn't it! And its great having the OCuK forums, cos there are plenty of genius's on here willing to help a noob out!

 

[Mark A]

but its great fun doing it isn't it! And its great having the OCuK forums, cos there are plenty of genius's on here willing to help a noob out!

Yeah, getting more performance for 0 extra cash and £35 for the chip, I'm well pleased.

Yep Ive learned loads through this forum on all sorts of things, great community. It even mentions this forum in the Prime 95 text document.

Ive clocked it back up to 250 and its prime stable for 2 hours 45 mins . Ive raised the CPU voltage to 1.425 and lowered the HT to 3x giving me 750mhz.

My temps are hitting 57oc during the stress test , this cooler is rubbish (Akasa Evo33) i think i need a bigger fan than the 80mm fan on this.

I might try for 255 what do you think?.

 

[Mark A]

I just tried 255 and it posted then i got a BSOD , looks like 250 will have to do.

One question i have is, my ram is now slightly under clocked at 196mhz, will this drastically reduce performance?. Could i reduce the CPU multi to say 10x and get it back up to 2750mhz while slightly clocking my ram at the same time?. I'm not sure i can change the multi with my mobo though.

I bet most people here are on Core 2 duo now so don't remember what I'm babbling on about .

EDIT:
Just noticed something, i have Geil Value 1gb memory, i used a divider and i thing the timings were lowered automatically. Stock timings are 2.5-3-3-6 and according to everest they're now at 2-3-3-5. Do you think this could be whats caused the BSOD. I dont know why im asking theres only one way to find out lol.

 

[Mul]

That could well be the problem 2-3-3-5 is pretty tight for that memory and you're not even far off stock ddr400 speeds either. manually set this to 2.5-3-3-6 and give 255 another shot. I'd also be aware that your motherboard could be the limiting factor from 250 and upwards. VIA's KT800 never was a fantastic clocker.

57*c load is fine. My 3700+ used to hit 70*c. I would be cautious once over 60 though.

Mul

 

[Mark A]

Cheers Mul. I'm at 255 now , it must have been the ram timings holding me back. My overclock is now 2810MHz, I'll run prime 95 before going any further i think.

Memory is now running at 200.8MHz and HTT is running at 766.5MHz.