We evaluated Ethernet performance using the NTttcp tool from Microsoft's Windows DDK. The docs say this program "provides the customer with a multi-threaded, asynchronous performance benchmark for measuring achievable data transfer rate."
We used the following command line options on the server machine:
ntttcps -m 4,0,192.168.1.25 -a..and the same basic thing on each of our test systems acting as clients:
ntttcpr -m 4,0,192.168.1.25 -aOur server was a Windows XP Pro system based on Chaintech's Zenith 9CJS motherboard with a Pentium 4 2.4GHz (800MHz front-side bus, Hyper-Threading enabled) and CSA-attached Gigabit Ethernet. A crossover CAT6 cable was used to connect the server to each system.
The nForce4 boards were tested with the NVIDIA Firewall and Jumbo Frames disabled.
When looking at our Ethernet performance results, keep in mind that the A8R-MVP uses the very same Marvell 88E8001 Gigabit Ethernet controller as the RDX200. Despite identical chips, the DFI board has much lower throughput and significantly higher CPU utilization. That's a perfect example of why the ULi south bridge is such a desirable alternative to the SB450.