Today I was back from school early - so I did some testing to overclock my GTX260.
As overclocktool I used the nVidia Inspector 1.9.5.5. The Far Cry 2 benchmark I used to detect the oc progress. I'm working on my 23.6" fullHD (1920x1080) monitor while having firefox and iTunes opened.
For all who overclocked never befor here are some references you have to follow:
- If you overclock your GraphicCard you will loose your warranty.
- Always have a watching eye on the temps of your entire hardware.
- Make sure your power supply has enough power ;)
- Only overclock just a few MHz a time - Otherwise the GC will swich to energy saving mode...And you have to restart your PC.
- The GC has three different clocks.
-GPU clock - It's the Graphic Processor Unit. It renders most of the stuff
-Memory clock - The Memory clock is responsible how fast it can read or write into the graphic memory
-Shader clock - The Shader clock is setting the maximum of the GPU clock. Take the half of the Shader and you will get the maximum GPU clock.
I take no guaranty for persons who try to overclock and fail!
You have all the responsibility of your clocking.
Before I started to overclock my GTX, I benchmarked the default settings.
The clocks ( GPU-Memory-Shader in MHz) and the result (Frames/Second)
576-999-1242 37,58
This will be my reference to the other clockings.
While I clocked sometimes before I started with a GPU clock of 621Mhz and a Memory clock of 1320MHz. This is 45 / 321MHz more than the default setting.
So lets see what happend to my frame rates:
621-1320-1242 i got 41,59frames/sec
By pushing the GPU 45MHz and the Memory 321MHz up, I got 10% more performance.
Thats awesome. Pushing up the clocks a few MHz's you get 10% more performance...
Let's see how much we can push the clocks...
As my next step I set the Memory up to 1330MHz...Also taking the benchmark and got:
621-1330-1242 and 41,73frames/sec
You see lifting the Memory about 10MHz brings not so much - only 0,14 frames...That's nothing...
Because I don't knew the maximum possible clocking of the GTX I went on pushing the Memory 10MHz a time...
But when I got to the 1350MHz the GC has many picture faults. So there were appearing many dark areas on the screen. And this limitation only to have around 41,92frames/sec ?
So I set it back to 1320...
That's no good deal. So I pushed the Shader and the GPU clock.
Time by time I raised the clocks up to 666-1320-1320 MHz. With this clocks I get awesome 43,24frames / second!!
That is about 15% more performence...That's nice.
A different of 5% you can't feel while gaming. But 15%...Thats incredible...
So you see...If you take some time (over all I needed around 4 houres) you let your Mainstream GC become a nearly High End GC..But always have a look onto the temps...;)
This is my first blog here - so if you have some comments or corrections or something simular please let me know it... ;)
If you are also overclocking your GC take a post and show us what clockings you have reached.
Thank you for reading...
overclocked Greetings
Lattenrost... ;)
Today ATi released the HD 6990...It's simply the fastes Graphic Card in the world...