overclocking 8800gts 640mb!

[blackhawk1928]

Okay so I want to overclock my 8800gts 640mb with nvidia performance control panel. I have my:
-Core Clock: 600mhz
-Shader Clock: 1406mhz
-Memory Clock: 904mhz

I am new and it seems like when I make shader or core higher, it doesn't pass the test thing. Which clock should i increase and decrease for best performance from my overclocked card.

 

[ibp_john]

Just try each one separately and see which one allows you to go higher.

Overclock involves a lot of trial and error since not all chips are made perfectly the same.

 

[Maziar]

Dont OC buy Ntune,OC with RIVATUNER,its alot better

Download link:
http://downloads.guru3d.com/download.php?det=163

A very good guide:
http://www.vaguetech.com/index.php?pageid=rt207