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The Opteron Skt 939 Overclocking thread !!!!

(BoG) Napalm said:
Thanks mate will give it a try in a sec. Might as well see if I can hit 3GHz on that voltage as well. It's at 1.35 (CPU-Z/Speedfan and the BIOS all say the same thing) at the moment.
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Dont worry about 3ghz yet... work towards it and don't rush it... get to know the limits off your hardware and your BIOS settings first. Aim for 2800mhz until you get better cooling. :)
 
Richdog said:
Dont worry about 3ghz yet... work towards it and don't rush it... get to know the limits off your hardware and your BIOS settings first. Aim for 2800mhz until you get better cooling.
Click to expand...

Yeah, good idea. I had a quick play around and it looks like 2700/2800 is my limit on this cooling. I hit 1.55vcore and it wasn't stable at 2900 so I've backed it off for now at 2700 at 1.375.

Extremely pleased though :D For £100 I have a chip that almost hits FX57 speeds at a smidgin over stock volts :eek: Can't beat it.

Will have to tweak my memory now once I get the chip stable etc.

I actually tried running my RAM at 1T but windows Blue screened :o
 
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I've currently got my system "stable" at 300X10 cpu, mem 1:1 3-3-3-8 timings.

I've ran sp2004 for 7h30m, OCCT,super Pi 32m. all of them were stable.
I played BF2 last night and after about an hour it crashed, so i lowered the cpu to 290, played for about an hour or 2 and it crashed again, very frustrating as i was on 100 points on the first crash and i got 75 points and a gold medal on the second crash, neither of them got recorded at BFHQ :mad:

i ran mem test over night @ 300 mhz and it did 11 passes of the test but got 11 errors. i presume you should get no errors! lol. this is the only thing i can think that is crashing my machine, the v.core is already @3v so i don't want to up it, is my only option to lower the cpu speed or run the ram on a divider? :(

Any other suggestions are appreciated! :)
 
Hi,

I had the same problem but I even had the memory passing memtest but the machine rebooting in windows ocasionally also!!

I had to back down to 2.95 Ghz and use a 166 divider also upped the voltage a little more to 1.525v (245Mhz on mem 2.5-3-3-6). This cured it for me and my system is now rock stable. Sorted 2.95Ghz for £111 cant grumble lol

I suggest you play with the ram dividers until you can get memtest stable and then go from there.

Cheers,
Hugest
 
ok thanks
my cpu is already at 1.55v, will uping my chipset volts help? does anyone know? it is already quite hot (@43~deg)

i suppose i could run my cpu @ 335x9 and mem @ 5:6 giving me 279 on the mem. i will have to wait til i get home to test it out. roll on 4.30pm!
 
Surely with 2gb Ballistix pc4000 there should be no need to lower divider; this has me a little worried as just ordered the 2gb ballistix pack and was hoping to get my 146 at a direct 300x10 1:1.

Please keep us updated teggs.
 
malccy said:
Surely with 2gb Ballistix pc4000 there should be no need to lower divider; this has me a little worried as just ordered the 2gb ballistix pack and was hoping to get my 146 at a direct 300x10 1:1.

Please keep us updated teggs.
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You'll be lucky to get 300HTT error free tbh, 280-290 is what to expect really.
 
Quite strange that it should go at 1.7v.

When I was on water I didn't have a problem running my San Diego on 1.7v. I've also had two Opterons up to 1.7v on air.

Of course, as I'm on phase 1.7v is perfectly safe. :D
 
Well, I've got my Opteron 146 CABYE in. Like a fool, I forgot to write down the entire stepping though...

I managed to break the stock cooler when installing it (crappy plastic arm snapped... never happened to me before), so I'm using my FX55 cooler, until I find a suitable 3rd party cooler.

I'm running prime95 now, with the CPU at 1.48v, 2.6Ghz. Running fine, but temps are getting up to 52C already...

edit - make that 1.5v - 2.8Ghz :D (temps at 55C)
 
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just got my cab2e from matt1. He'd sold it as '2700mhz stable at stock voltage' so i was taking a bit of a chance. Just passed over an hour of sp2004 at 2.85 / 1.55volts. I've bumped up to 2900 now, still at the same voltage. Soooo close to a sub 30second 1m pi. Priming as we speak...who knows, maybe i'll get 3ghz...?
 
Communitywise, the jury is still out on the benefits of burning in. Some say it works, others say it doesn't.

Opinions are so divided on this issue it's hard to get a definitive answer. However, if you see an improvement it doesn't really matter. :p
 
(BoG) Napalm said:
Is there any proof burning in actually works?
Click to expand...

To a point, yes.

Modern thermal paste, like AS5, needs time to 'settle in'. After a few cycles of heating and cooling (ie. system on and off) the particles in the paste migrate into the microscopic cracks and deformations in the surface of the CPU and heatsink, improving thermal contact.

On the other hand, I have never seen a great deal of impact on overclocking performance. In my experience, if a CPU doesn't perform well straight away, it's unlikely to improve too much over time (unless of course it's performing badly because you don't have the right BIOS settings etc).
 
My CABYE is now happily priming at 2.9Ghz.

The guy I bought it from over at XS said that it could complete super-pi 32M at 3ghz on his watercooling setup, so I'm quite pleased it's running prime95 at 2.9. I'll try 3ghz later on.

My only worry are the temperatures... 58C now at 2.9Ghz - seems a little high for a 90nm chip, even at full load...
 
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