While playing the Blu-ray I checked the power drain using a power meter and only around 115Watts was being drawn, which isn't too bad. The PSU is rated at 300W, which should mean you could just about get away with an 8880 GT in there, though you'd really be pushing it and the fans will run quite loudly. You'll also need to source your own molex to six-pin adaptor, as one isn't supplied. However, this isn't a system aimed specifically at the gamer and as such we only ran 2D tests on this system.
As you can see it doesn't quite match the SD39P2 in terms of speed, but of course we did test this with an 8800 GTX as it doesn't feature integrated graphics. However, generally speaking the SG33G6 system is plenty fast, and it was certainly a lot nimbler and more pleasant to use than my regular work system.
If you're the more adventurous type you'll find that there's a wealth of options in the BIOS for tweaking and overclocking. I went straight in and increased the FSB from a standard 266MHz (quad-pumped 1,066MHz) and upped it to 333MHz (1,333MHz quad-pumped) and took the CPU to 3GHz. With the 1,066MHz Crucial RAM in place, the system was perfectly stable reflecting on the flexibility and quality of Intel's marvellous Q6600 and Shuttle's high quality motherboard. Of course, you're limited by Shuttle's ICE system and don't have the luxury of adding custom fans and such like, but with some time and effort and through trial and error, you could most likely wring more from this system.
Shuttle has once again produced another fine system. While the fingerprint reader is a bit of a gimmick, the integrated Bluetooth and Wi-Fi are welcome additions. The HDMI connection works without issue once the latest drivers are installed, and using the integrated graphics the system is fast and quiet. As such, the SG33G6 Deluxe is more suited as a multimedia desktop rather than a dedicated media or games machine, but has enough in its locker to take on both of those tasks should the need arise.