Serial ATA performance
The Serial ATA disk controller is one of the most important components of a modern core logic chipset, so we threw each platform a selection of I/O-intensive storage tests using a Western Digital Raptor WD1500ADFD. The 780G is at a disadvantage here because we're running it in native IDE mode, which doesn't support Native Command Queuing.
We'll begin our storage tests with IOMeter, which subjects our systems to increasing multi-user loads. Testing was restricted to IOMeter's workstation and database test patterns, since those are more appropriate for desktop systems than the file or web server test patterns.
No doubt thanks to its proper AHCI implementation, the GeForce 8300's transaction rates scale much better in IOMeter than those of the 780G.
The GeForce's response times are lower, too, although not by significant margins.
IOMeter CPU utilization is pretty much even between the two contenders.