NetBench	Source: E-Testing Labs

NetBench is a portable benchmark program that measures how well a file server handles file I/O requests from 32-bit Windows clients, which pelt the server with requests for network file operations. NetBench reports throughput and client response time measurements. Version 7.0.2 of NetBench answers user requests for greater disk coverage and more disk-testing flexibility. To run NetBench, you need a file server, a PC running Windows NT or Windows 2000 (called the controller) to start and monitor the tests, and clients that are running either Windows 95/98 or Windows NT/2000.

Netbench
	dm_nb701 Test	Throughput	Ranking
1.	Tyan Tiger S2720 (HT Enabled)	6
2.	Tyan Tiger S2722 (HT Disabled)	5
3.	Tyan Tiger S2722 (HT Enabled)	5

Here with the first test dm_nb70 we see that with HyperThreading does not affect performance.

Netbench
	en_dm_nb701	Throughput	Ranking
1.	Tyan Tiger S2720 (HT Enabled)	78
2.	Tyan Tiger S2722 (HT Disabled)	43
3.	Tyan Tiger S2722 (HT Enabled)	44

I'm not really sure why the S2722 performs so much lower than The S2720. I reran the benchmark a few times and got the same result.