The x1600xt will kill the 6800gs, even overclocked. Lol fanboys, don't even look at the specs and just say the 6800gs will own. No that is not the case. Not only is the X1600XT cheaper than the 6800gs, but it's far more powerful. Let's take a minute to compare specs, shall we?
X1600XT:
Price: $179
process size: 90nm
core speed: 600MHz
Pixel pipelines: 12
RAM: 256MB GDDR3
RAM speed: 1.4GHz
support shader model 3: yes
6800GS:
Price: $205
process size: 130nm (or is it 110nm?)
core speed 425MHz
Pixel pipelines: 12
RAM: 256mb GDDR3
Ram speed 1.0GHz
support shader model 3: yes
Even an overclocked 6800gs would still lose to an X1600XT, if you're LUCKY, you might hit 510/1150 clock speeds on the 6800GS, but lets compare that to the stock speeds of the X1600XT: 600/1400. there is no competition. both cards have 12 pipelines. the 6800GS CAN NOT be unlocked, contrary to what some people here believe. I'm not sure about the X1600XT. And not only does the X1600XT beat an overclocked 6800GS, but it too will also have a very good overclock headroom due to the 90nm process. I'm thinking mabey 690/700 for core, mabey 1.5GHz for the RAM.
EDIT:
just read on the inquirer that the 6800gs still beats it by a fair ammount due to the 256-bit memory, and the x1600 only has 128-bit. so yeah... sorry about that. ati might release it with 256-bit memory for the same price of the 6800gs.. if it did that, it would totally kill the 6800gs with it's clockspeeds.