6800 overclock

[collisster]

I have a 6800 as you may have guessed and I would like to overclock it.
I have seen the memory clock frequency to be a 1 ghz on many guides. mine is at 600 mhz. the temperature of the video card is around 42 degrees when idle and just out of games I rarely see it above 50. can I just band the memory clock frequency to 1ghz and leave the core clock frequecy as standard.
I may upgrade to a 7600 but I want the most out of this card first. Although I may wait until the Dx10 cards come out. ? .

Thanks

 

[collisster]

this is the exact model that I have http://www.leadtek.com.tw/eng/3d_graphic/overview.asp?lineid=1&pronameid=163
Can I bump up my memory frequency on it to 1ghz

 

[collisster]

how come? what will my max overclock be (estimation)

 

[collisster]

thats the detect optimal frequencies
its a BIG increase form the stock. should I leave it like that?
edit:i saved it as a gif sorry for loss of colour

 

[collisster]

Will do,where can I find 3d mark 06 without paying for it I have 03

 

[collisster]

It was a big jump so I've taken it down on the mem and the core, seems to be running fine now
Does an arctic cooler cover the whole card ? Because I was thinking of getting some of those memory heat spreaders from OCUK the little blue ones you stick on.

 

[collisster]

which zalman should I get for my 6800?