USB performance
Our USB transfer speed tests were conducted with a USB 2.0/Firewire external hard drive enclosure connected to a 7,200-RPM Seagate Barracuda 7200.7 hard drive. We tested with HD Tach 3.01's 8MB zone setting.

The 785G proves a little slower than the G41 when reading, but it's faster with writes. Of course, the AMD chipset also consumes more CPU cycles. Even with HD Tach's margin of error in the CPU utilization test factored in, the G41 is still more efficient.

PCI Express performance
We used NTttcp to test PCI Express Ethernet throughput using a Marvell 88E8052-based PCI Express x1 Gigabit Ethernet card.

PCI performance
To test PCI performance, we used the same NTttcp test methods and a PCI Intel GigE NIC.

Although the G41 Express offers consistently higher throughput and lower CPU utilization with both PCI and PCI Express Gigabit Ethernet cards, the performance gaps are pretty narrow, all things considered.