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
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	29.3
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	28.6
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
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	35.7
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	35.1

The MSI K8N Neo4 Platinum/SLI runs about middle of the pack here.

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
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	8530
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	4060
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
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	33600
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	31900
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
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	1470
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	916
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
Gigabyte GA-K8NXP-SLI (NF4 SLI 200/400 X800XT)	2230
MSI K8N Neo4 Platinum/SLI (NF4 SLI 200/400 X800XT)	2130

I was very surprised to see how weak the drive performance of the MSI K8N Neo4 Platinum/SLI was. Hopefully newer nForce drivers will address this troublesome issue....