Overclocking GTX (+ Athlon X2)

Syncroneyes · December 15th, 2007, 07:46 PM

yeah, sorry I meant 1.250V !

-Actually, I didnt realise this, but the voltage automatically increases slightly when I am increasing the bus speed.

maximum automatic increase in voltage when I increase bus to 214 mhz was 1.296V which went down sometimes to 1.264V , but when i decrease bus to 210 mhz the maximum voltage is 1.248V which sometime drops to 1.232V (-why i was asking 1.250V)

either way voltage changes seem to be out of my control as whatever voltage changes i make in BIOS the pattern sticks to what I have described above - plus I don't really know what/which voltages to change as there are many options for voltages in BIOS - need some help here please!

max stable bus now is 208mhz (3120mhz) with Orthos, but i still want more! - need the increase voltage stability!!!

Unixlord · December 15th, 2007, 08:57 PM

You should be able to change the vcore from auto to a voltage of your choosing in the bios. Have a look at the mobo's manual to see if it has this feature (it had better).

Syncroneyes · December 15th, 2007, 09:21 PM

o.k i'll have a look, max stable bus with Orthos is now 209mhz (3135mhz) can't get it any higher without changing voltages.

so far none of the voltages i have changed have made any difference - Chaos -how the hell did you get a stable 3.2 ghz o/c?

-about the artifacts, i understand that they are probably caused by overheating but isn't it just a little strange to overclock a GPU that much and not see one single artifact on the screen or any framefrate fluctuations??

I saw absolutely no difference in GPU/framerate performance by o/c my GTX with Ntune and also no artifacts at all which makes me wonder it actually worked at all...?

Unixlord · December 16th, 2007, 09:36 AM

You claim you saw no difference in frame rates but fail to state what game/benchmark you used to come to this conclusion. You could be limited by some other factor. If I was OCing 8800GTXes I'd find the GREATEST COMMON STABLE OC (bolded and underlined for emphasis) on each and flash their bios and be over with it.
If you're dying to see artifacts disconnect your chasis fans one by one until they appear. If that doesn't work you can always use riva tuner to reduce the fan speed and run ati tool stress test or some other tool until you are satisfied to see artifacts. Then again you aren't "guaranteed" to see them.

Syncroneyes · December 16th, 2007, 08:48 PM

as if you needed to ask

- it was with Crysis that I was testing with. I didn't see any difference at all with core at 600 and memory at 1000 (default 575-900) this is why i was unsure if it was working. Also I wasn't sure if Ntune was recognising my Sli setup as it gave me no indication at all (there was just one slider for core and one for mem so i presumed both cards were automatically being o/c equally).

To be honest the GTX is a solid performer with its default settings so o/c it is not that critical to me, I thought it would be nice if i could easily see some visible performace increases by o/c, but if that's unlikely I won't lose much sleep over it. I might keep trying with various tuners over time "at my leisure"...

(P.S I think sometimes you forget Unix, not all of us are as knowledgable as you with all computer related stuff )

-actually what has recently become of utmost importance to me is milking as much extra juice out of my CPU as is humanly possible in order to both give me any possible overall performace increase and also to extend the amount of time before i inevitably contemplate upgrading..

..which is now why i want to find out which voltage settings to tweak as I know deep down i can get my X2 to run stable @ 3.2 ghz -other people have done it -I just have to keep trying

....and, trust me, I have absolutely no real desire to see artifacts on my screen

gen.Rage1991hrv · December 16th, 2007, 09:00 PM

lol and you will not see any difference on it maybe because you need stronger cpu to gain higher fps

Unixlord · December 16th, 2007, 09:02 PM

You could always PM either chaos or imodintel. As you may already know not all cpus are created equal and some inevitably overclock better than others. I don't want to dash your hopes or anything but there's a chance that you won't be able to achieve stable 3.2Ghz.

Edit: Oh btw gen is right. Crysis is one of the few games that actually improves when you add 2 extra cores. It's one of the few games that performed well on the buggy initial phenoms. The smartest solution for you is to wait for the fixed B3 phenoms.

Syncroneyes · December 16th, 2007, 09:08 PM

yeah - as usual you're probably right. Anyway, I will just keep trying in my spare time.

Thnx for the advice, eventually i might get there. -Well i have already some increase (stable @ 3135mhz) but it would always be nice to get a little bit more extra free performace.. but i most likely won't see a big change anyway. If i get anymore improvement I will post details here..

- keep on truckin'!

gen.Rage1991hrv · December 16th, 2007, 09:09 PM

true unix
and that core is unstable on higher clock but it can stand high fsb and low multiplier
dont know why but that cpu is not a good overclocker

Syncroneyes · December 19th, 2007, 12:03 PM

one fact that i haven't really appreciated also is that every motherboard is going to play a different role in allowing how much you can o/c.

just cause someone else managed 3.2 Ghz or 3.3 Ghz o/c with the same X2 CPU doesn't necessarily mean i will be able to achieve the same as they might be using a different mobo that has better o/c potential...right?