Winstone 2004	Source: Zdnet

Business Winstone 2004 runs real applications through a series of scripted activities and uses the time a PC takes to complete these activities to produce its performance scores.

Content Creation Winstone 2004 is a system-level, application-based benchmark that measures a PC's overall performance when running top, Windows-based, 32-bit, content creation applications in Windows XP.

Winstone 2004
Business Winstone 2004:	Points	Ranking
Foxconn 955X7AA-8EKRS2 (955X 200/667)	25.2
Foxconn 945P7AA-8EKRS2 (945P 200/667)	26.5
MSI P4N Diamond (NF4 SLI 200/800)	26.1
Epox 5NVA+ SLI (NF4 SLI 200/800)	26.3
Foxconn NF4SLI7AA-8EKRS2 (NF4 SLI 200/800)	26.2
Gigabyte GA-8N-SLI Quad Royal (NF4 SLI 200/800)	26
Content Creation 2004:	Points	Ranking
Foxconn 955X7AA-8EKRS2 (955X 200/667)	32.6
Foxconn 945P7AA-8EKRS2 (945P 200/667)	33.3
MSI P4N Diamond (NF4 SLI 200/800)	33
Epox 5NVA+ SLI (NF4 SLI 200/800)	32.8
Foxconn NF4SLI7AA-8EKRS2 (NF4 SLI 200/800)	33.4
Gigabyte GA-8N-SLI Quad Royal (NF4 SLI 200/800)	33.2

More consistancy here, all Socket 775 motherboards do well in the Winstone 2004 benchmarks.

Winbench 99	Source: Zdnet

WinBench 99 is a subsystem-level benchmark that measures the performance of a PC's graphical, disk, and video subsystems in a Windows environment. WinBench 99's tests can run on Windows 95, Windows 98, Windows NT, Windows 2000, and Windows XP systems.

WinBench 99
Business Disk WinMark:	Points	Ranking
Foxconn 955X7AA-8EKRS2 (955X 200/667)	13400
Foxconn 945P7AA-8EKRS2 (945P 200/667)	14600
MSI P4N Diamond (NF4 SLI 200/800)	21800
Epox 5NVA+ SLI (NF4 SLI 200/800)	20900
Foxconn NF4SLI7AA-8EKRS2 (NF4 SLI 200/800)	20800
Gigabyte GA-8N-SLI Quad Royal (NF4 SLI 200/800)	22800
High-End Disk WinMark:	Points	Ranking
Foxconn 955X7AA-8EKRS2 (955X 200/667)	58000
Foxconn 945P7AA-8EKRS2 (945P 200/667)	60700
MSI P4N Diamond (NF4 SLI 200/800)	58000
Epox 5NVA+ SLI (NF4 SLI 200/800)	56700
Foxconn NF4SLI7AA-8EKRS2 (NF4 SLI 200/800)	57000
Gigabyte GA-8N-SLI Quad Royal (NF4 SLI 200/800)	59300

It's a bit surprising to see that HDD performance of the nForce4 SLI surpass Intel's ICH7 southbridge. Traditionally Intel performs very well in HDD related benchmarks. The GA-8N-SL Quad Royal motherboard does well in this benchmark.