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
ASRock K8 Combo-Z/ASR (Ali M1689 200/400)	27
Soltek SL-K8TPro-939 (K8T800 Pro 200/400)	28.6
MSI K8T Neo2-FIR (K8T800 Pro 200/400)	N/A
MSI K8N Neo2 Platinum (NF3 Ultra 200/400)	N/A
Epox 9NDA3+ (NF3 Ultra 200/400)	29.4
Gigabyte GA-K8NXP-9 (NF4 Ultra 200/400)	33.4
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	28.6
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	29.3
Content Creation 2004:	Points	Ranking
ASRock K8 Combo-Z/ASR (Ali M1689 200/400)	34.7
Soltek SL-K8TPro-939 (K8T800 Pro 200/400)	37.2
MSI K8T Neo2-FIR (K8T800 Pro 200/400)	N/A
MSI K8N Neo2 Platinum (NF3 Ultra 200/400)	N/A
Epox 9NDA3+ (NF3 Ultra 200/400)	35.9
Gigabyte GA-K8NXP-9 (NF4 Ultra 200/400)	36.3
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	35.1
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	35.7

The two MSI motherboards were not available for these tests but here we see that performance overall is very good. Not quite as fast as the nForce4 Ultra, but still good.

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
ASRock K8 Combo-Z/ASR (Ali M1689 200/400)	30000
Soltek SL-K8TPro-939 (K8T800 Pro 200/400)	9990
MSI K8T Neo2-FIR (K8T800 Pro 200/400)	19600
MSI K8N Neo2 Platinum (NF3 Ultra 200/400)	19400
Epox 9NDA3+ (NF3 Ultra 200/400)	19200
Gigabyte GA-K8NXP-9 (NF4 Ultra 200/400)	18900
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	4060
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	8530
High-End Disk WinMark:	Points	Ranking
ASRock K8 Combo-Z/ASR (Ali M1689 200/400)	51800
Soltek SL-K8TPro-939 (K8T800 Pro 200/400)	34900
MSI K8T Neo2-FIR (K8T800 Pro 200/400)	43300
MSI K8N Neo2 Platinum (NF3 Ultra 200/400)	41000
Epox 9NDA3+ (NF3 Ultra 200/400)	42600
Gigabyte GA-K8NXP-9 (NF4 Ultra 200/400)	36900
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	31900
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	33600
Business Graphics WinMark:	Points	Ranking
ASRock K8 Combo-Z/ASR (Ali M1689 200/400)	1580
Soltek SL-K8TPro-939 (K8T800 Pro 200/400)	1700
MSI K8T Neo2-FIR (K8T800 Pro 200/400)	1490
MSI K8N Neo2 Platinum (NF3 Ultra 200/400)	1580
Epox 9NDA3+ (NF3 Ultra 200/400)	1560
Gigabyte GA-K8NXP-9 (NF4 Ultra 200/400)	1710
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	916
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	1470
High-End Graphics WinMark:	Points	Ranking
ASRock K8 Combo-Z/ASR (Ali M1689 200/400)	2470
Soltek SL-K8TPro-939 (K8T800 Pro 200/400)	2650
MSI K8T Neo2-FIR (K8T800 Pro 200/400)	2460
MSI K8N Neo2 Platinum (NF3 Ultra 200/400)	2490
Epox 9NDA3+ (NF3 Ultra 200/400)	2480
Gigabyte GA-K8NXP-9 (NF4 Ultra 200/400)	2660
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	2130
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	2230

Neither SLI board did well on these tests, quite possibly due to the beta status of the drivers. Hopefully performance will increase with subsequent updates.