Elite Bastards posted a review on the Galaxy GeForce 8600 GTS OC video card

Compared to the GeForce 8600 GT part we looked at from Galaxy recently, this particular GeForce 8600 GTS SKU is a little more conservative with regard to its overclocks. For starters, the 256MB of memory on-board hasn't been touched at all, leaving it at the stock speed of 1GHz, while the G84 core sported by this card gets just a 45MHz boost, leaving it clocked at 720MHz over the reference speed of 675MHz. This also makes for a change in the clock speed of the core's Stream Processors, up to 1,584MHz from the 1,450MHz of the stock part.

Galaxy GeForce 8600 GTS OC video card review