Test Setup

Dual AMD Opteron 246
AMD Athlon 64 3200+
Intel Pentium 4 2.8C/800 (Hyper-Threading Enabled)

Tyan Thunder K8W (Opteron)
ASUS K8V Deluxe (Athlon 64)
Intel Desktop Board D875PBZ "Bonanza" (Pentium 4)

2 GB Corsair 4xCMX512RE-3200LL XMS DDR400 Registered ECC Ram (Opteron)
2 GB Corsair 4xCMX512-3200LL XMS Pro DDR400 (Pentium 4)
1.5 GB Corsair 2xCMX512-3200LL XMS Pro DDR400 (Athlon64)

SuperMicro SP-450 PSU (Opteron)
SilenX.com 400W 16 dB PSU (Athlon64)
Forton/SPI 300W ATX PSU - standard MicronPC (Pentium 4)
Monster Power HTS 3600 Power Conditioning

Windows XP Professional SP1

Comments

1.5GB represents the peak memory use on the Athlon64 3200+ using our 512MB Corsair XMS Pro 3200LL DIMMS. Since the Athlon64 Clawhammer uses a single channel 64-bit memory controller, we wouldn't expect any problems from using an odd number of DIMMs.

On the Pentium 4 / i875P Canterwood platforms, memory is added in pairs to take advantage of the dual channel DDR. Using 1.5GB would be unfairly crippling the system, so we've gone with 2GB, or 4x512MB. We didn't have the 3.0GHz system to work on in time.

The Pentium 4 was an off-the-shelf MicronPC Client Pro 545. All we did was swap out the RAM for Corsair XMS3200LL.