Winstone 2004	Source: Zdnet

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. 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.

Winstone 2004
Business Winstone 2004:	Points	Ranking
Albatron K8X890 Pro II (K8T890 200/400)	27.3
MSI RS480M2-IL (RS480 200/400)	29.1
Chaintech Zenith VNF4 Ultra (NF4 Ultra 200/400)	30.3
DFI LANParty NF4 SLI-DR (NF4-SLI 200/400)	32.2
Epox 9NPA+ SLI (NF4 SLI 200/400)	31.2
ECS KN1-SLI Extreme (NF4 SLI 200/400)	31.9
Content Creation 2004:	Points	Ranking
Albatron K8X890 Pro II (K8T890 200/400)	36.2
MSI RS480M2-IL (RS480 200/400)	36.4
Chaintech Zenith VNF4 Ultra (NF4 Ultra 200/400)	39.5
DFI LANParty NF4 SLI-DR (NF4-SLI 200/400)	39.7
Epox 9NPA+ SLI (NF4 SLI 200/400)	39.6
ECS KN1-SLI Extreme (NF4 SLI 200/400)	39.6

In the Winstone 2004 tests, the ECS KN1-SLI Extreme motherboard performs very well and is able to challenge the DFI LANParty NF4 SLI-DR for top spot, impressive considering it is the fastest nForce4 SLI motherboard on the market.

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
Albatron K8X890 Pro II (K8T890 200/400)	10700
MSI RS480M2-IL (RS480 200/400)	13600
Chaintech Zenith VNF4 Ultra (NF4 Ultra 200/400)	27900
DFI LANParty NF4 SLI-DR (NF4-SLI 200/400)	27100
Epox 9NPA+ SLI (NF4 SLI 200/400)	26400
ECS KN1-SLI Extreme (NF4 SLI 200/400)	15000
High-End Disk WinMark:	Points	Ranking
Albatron K8X890 Pro II (K8T890 200/400)	38500
MSI RS480M2-IL (RS480 200/400)	46800
Chaintech Zenith VNF4 Ultra (NF4 Ultra 200/400)	62900
DFI LANParty NF4 SLI-DR (NF4-SLI 200/400)	60700
Epox 9NPA+ SLI (NF4 SLI 200/400)	61700
ECS KN1-SLI Extreme (NF4 SLI 200/400)	61600
Business Graphics WinMark:	Points	Ranking
Albatron K8X890 Pro II (K8T890 200/400)	1640
MSI RS480M2-IL (RS480 200/400)	1780
Chaintech Zenith VNF4 Ultra (NF4 Ultra 200/400)	1690
DFI LANParty NF4 SLI-DR (NF4-SLI 200/400)	1680
Epox 9NPA+ SLI (NF4 SLI 200/400)	1980
ECS KN1-SLI Extreme (NF4 SLI 200/400)	1870
High-End Graphics WinMark:	Points	Ranking
Albatron K8X890 Pro II (K8T890 200/400)	2560
MSI RS480M2-IL (RS480 200/400)	2990
Chaintech Zenith VNF4 Ultra (NF4 Ultra 200/400)	2570
DFI LANParty NF4 SLI-DR (NF4-SLI 200/400)	2600
Epox 9NPA+ SLI (NF4 SLI 200/400)	2770
ECS KN1-SLI Extreme (NF4 SLI 200/400)	2690

I am rather surprised by the ECS motherboard's performance in the disk tests, something does not look right here. Odd since I reran the benchmark several times and got the same results.