Unfortunately the platform that we were testing on would only allow us to run our DDR2-800 at 4-5-4 timings, instead of the 3-3-3 that's possible with this memory on socket 775. That hurts performance a bit, but the real world difference between 4-5-4 and 3-3-3 isn't going to be more than a few percentage points.
The only DDR2-800 we had on hand was in the form of 1GB modules, so we had to use a pair of 1GB DDR-400 which ran at 2-3-2, instead of the 2-2-2 we normally run with our smaller 512MB modules. Once again, the difference in performance isn't tremendous, but we wanted to explain why the timings were different than what we've used in the past.
Both our Socket-AM2 and Socket-939 Athlon 64 X2 processors ran at the same clock speed with the same cache sizes, so the results should give us a clear indication of whether or not AM2 is faster than equivalent 939 configuration.
|CPU:||AMD Athlon 64 X2 Socket-AM2
AMD Athlon 64 X2 Socket-939
|Motherboard:||ASUS A8N32-SLI (Socket-939)
Unnamed MCP55 Socket-AM2 Motherboard
|Chipset:||NVIDIA nForce4 SLI x16
|Chipset Drivers:||nForce4 6.70|
|Hard Disk:||Seagate 7200.9 300GB SATA|
|Memory:||OCZ PC8000 DDR2-800 4-5-4-15 (1GB x 2)
OCZ DDR-400 2-3-2 (1GB x 2)
|Video Card:||NVIDIA GeForce 7800 GTX|
|Video Drivers:||NVIDIA ForceWare 84.21|
|Desktop Resolution:||1280 x 1024 - 32-bit @ 60Hz|
|OS:||Windows XP Professional SP2|