We measured processing performance using PCMark04 program. You can see the results below.

Motherboards	PCMark04 (Build 1.3.0)	%
MSI P4N Diamond SLI (nForce4 SLI) DDR2	5068	+1.75
ECS 915P-A (Intel i915P) DDR2	5047	+1.33
ECS 915P-A (Intel i915P) DDR	5043	+1.24
PCChips Tidalwave T18 (Intel i915P) DDR	5025	+0.88
Albatron PX915P Pro (Intel i915P) DDR	5020	+0.78
EPoX 5EPA+ (Intel i915P) DDR	5012	+0.62
Foxconn 915A01-P-8EKRS2 (Intel i915P) DDR2	5012	+0.62
PCChips Tidalwave T18 (Intel i915P) DDR2	5010	+0.58
ECS C19-A SLI (nForce4 SLI XE) DDR2	4981
EPoX 5NVA+ SLI (nForce4 SLI) DDR2	4946	-0.71
DFI LanParty 875P-T (Intel i875P) DDR	4930	-1.03
ECS 865PE-A7 (Intel i865PE) DDR	4830	-3.13
DFI LanParty UT 915P-T12 (Intel i915P) DDR2	4817	-3.40
DFI LanParty 925X-T2 (Intel i925X) DDR2	4800	-3.77
DFI LanParty UT 915P-T12 (Intel i915P) DDR	4750	-4.86

ECS C19-A SLI achieved the same performance level of almost all motherboards included in our comparison, being faster than ECS 865PE-A7 (Intel i865PE) DDR, DFI LanParty UT 915P-T12 (Intel i915P) DDR2/DDR and DFI LanParty 925X-T2 (Intel i925X) DDR2.