This brings us to those clock speed differences, and the one point of interest for the vast majority of users away from 3-way SLI support. With a reference GeForce 8800 GTS 512MB sporting a core clock of 650MHz and a shader clock of 1625MHz, we find that the GeForce 9800 GTX only offers a very small boost in these areas, with a reference part utilising a 675MHz core clock and a shader clock of 1688MHz - Hardly earth shattering stuff. Memory clocks fare a little better, with the GeForce 8800 GTS 512MB's 970MHz memory clock surpassed by the use of 512MB of 1.1GHz (2.2GHz effective) GDDR3 modules.