Asus GeForce GTX 460 1GB DirectCu
AMD Phenom II X6 1090T Black Edition
Gigabyte MA770T UD3P Motherboard
4GB Corsair Dominator GT DDR3-1600 C7 AM3
Samsung Spinpoint F1 320GB SATA II Hard Disk Drive
Asus GeForce GTX 460 DirectCu TOP 1024MB GDDR5
nVidia GeForce GTX 460 768MB GDDR5
Samsung 22x DVD+/-RW SATA
Windows 7 Home Premium x64
Forceware 258.96 Drivers
Our testing procedure entails a 30 minute period of idle testing from cold, followed by a 30 minute period of Furmark's Stability Test. Temperatures are noted with the fan set to Automatic and at a fixed speed of 50% for the sake of a fair test.
Our first observation was that the 1GB version of the card runs slightly warmer with all of its ROPs and Memory Interface enabled. Another reason for the higher temperatures is the graphics card's higher core frequencies but more importantly, its higher default voltage of 1.01V vs the 0.97V recorded on our 768MB Reference card.
With the fan set to Auto, we reached a maximum Load temperature of 64*c with a maximum duty speed of 54%. Reducing the fan speed to a fixed 50% lowered the motor noise of the fan quite noticeably, however the load temperature had risen to a more toasty 71*c. These results were a little higher than we expected, however on the basis of the card's higher operating voltage and its fully enabled specification, it is certainly reasonable.
This is where things get a little interesting. Without manipulating Core Voltages, we reached a maximum stable frequency of 852MHz. We weren't entirely happy with this so after a 0.05V voltage increase, we finally found ourselves with a speedy 881MHz Core and a consequent Shader Frequency of 1762MHz. The memory on the Asus DirectCu was also impressive as we obtained a maximum frequency of 4160MHz. Great results all round!
So without further ado, lets whack out the benchmarks!