Read and comment in this thread:
http://rog.asus.com/forum/showthread.php?6851-G74-and-8GB-Memory-DIMMs...
In summary, yes.
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G74SX-CST1-CBIL, i7 2630QM 2GHz
32GB DDR3 RAM @1333MHz
GTX560M 3GB DDR5 (192 bit)
17.3" LED 1920x1080
Sentelic TP, BIOS 203
Debian Linux Wheezy (Testing) Kernel 3.2, NVIDIA 295.40