Kind of advanced GPU overclocking questions...

I am trying to overclock my 9800m.

1. Are the core, memory, and shader clocks all completely independent of one another? Will putting one up effect how high another can go... should I raise them together or test to see how high I can get each clock without artifacts and without crashing, AND THEN apply them all at once for a stable system? Is there any order I should test in?

2. The core clock it seems I am only looking for stability... it seems like I am just looking to try to see how high I can get it while still not crashing the driver, correct?

3. It seems for the memory clock I am just searching for artifacts, yes? When the artifacts are gone, thats the sweet spot?

4. What am I looking for in the shader clock?

5. Is there any software that will help my eye look for artifacting or really stress test my GPU core clock for crashes?

6. On my Gateway p7801u Laptop's 9800m, is there anything more I can adjust beyond the core, memory, and shader clocks? Maybe get at the voltages to try and crank up the clock speeds even more?

7. My stock core clock speed is 600. How can it be that at 735, I can run everything but FireFlyForest in 3dMark06 (GeoForms, Adrianne, Medusa, Cascades, X3 Terran Conflict). At 625-700 it wont run anything, but at 715 everything seems completely stable and runs? Am I testing things wrong? Thanks

8. If I understand this right... no matter what numbers I put the clock at it doesn't matter past a certain point (max physical clock speed), right? Its just a matter of figuring out what that max physical speed is and setting the software to run at it?


Thanks!

 

3. Well you don't exactly "want" artifacts. Artifacts are like a warning sign saying don't go any farther.

 

Let the program search for artifacts, just because you can't see them doesn't mean that they're not there.

 

I believe on Nvidia cards the shaders are somewhat tied to the speed of the core, ie. if you don't OC the core enough or too far then the speed drops (can't remember where I saw this).

Yep, but remember, stable for one game isn't stable for another.

Find the speed at which you start to artifact, then back off 15-25MHz for safety. Do the same for the core and shaders.

I recommend ATI Tool for the scanner while running Furmark.

You could flash the card's BIOS, but you risk bricking it and bringing on more problems than it's likely worth. There is a thread somewhere about Nvidia BIOS flashing.

Test with Furmark and ATI Tool, it's likely that FireFly is stressing some part of the GPU more than anything else causing it to fail.

NO. Never just ramp up the clock, the GPU will always try to run at that speed, if it can't it will crash, if you go too high you risk damaging components. That's why you ALWAYS SLOWLY raise the clocks while testing.

 

Dont u think 9800m is more than enough for u right now. I dont see a reason to overclock it.

 

With core and shader, always maintain the stock ratio. For 9800M chips it's 2.5:1. So if your core is 700, your shader should be 1750 to maintain stability.

 

I have done many searches becouse I was wondring how to overclock MY 9800m but I find out that it was my CPU ([email protected]) that was the problem... So now I want to overclock my cpu but don't have time to do that...

EDIT: [email protected]
Not 2.60Ghz

EDIT2: Now new Benchmarks result says "Video memory usage: 99%" Im realy confused now!

 

me too...

 

I have a 9800M GTS and a P8700 (2.53Mhz)
I think my processor is the bottleneck.. If I OC what is the performance gain I will get?

 

Bottleneck for what?

 

All games...

 

No, it isn't bottlenecking you in 90% of games out there.

 

Well, im getting a T9300 combined with a 9800m GT SLi, will the prosessor in this case bottleneck the overall performance?

Is the T9300 easy to overclock?

 

i would want over 2.5ghz and ddr3 1033 for that gpu setup.

 

Not always. I use evga precision to overclock my card and they can be linked or not linked.



To get the max overclock you will need to unlink them because the core and the shaders can have different clocking abilities.