My poor laptop, which I suspect may be on its last legs, scores a pretty pathetic 1285 int/844 float. It's a P4 2.0 GHz w/ 512 MB of RAM spread out across 4 128 MB modules @ CL2.0.
My desktop, the AMD64 system, gets 5463 int/5427 float.
Of course, in both cases, I ran the test after the system have been running for a few weeks, and with a lot of background processes going, so they'd both score better if I rebooted and then ran the test immediately. I've seen my desktop approach about 6300 MB/sec after a fresh reboot and with a degragmented HDD.