After a mediocre score in 3Dmark03, the IceQ Turbo makes a comeback in 3Dmark06. Since the card is overclocked, you can probably expect it will surpass most 8600GT cards in games.
As for overclocking the card, we didn't have any trouble in doing so, in spite of the "out of the box" overclock. After trying out a few combinations we ended up at 938MHz for the core. An impressive overclock, probably thanks to the IceQ cooler. Although the memory chips aren't directly cooled by it, we managed to overclock them to GDDR4 speeds, 1098/2196MHz. We were just a couple of MHz short of the GDDR4 reference clocks, 1100/2200 MHz, but this is an impressive score for GDDR3 chips. Almost 800 MHz above the reference 1400MHz.