Intel Core i5-750S: Since When Does The S Mean Slow?

Test Setup And Components

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System Hardware
Hardware Details
Performance Benchmarks
Motherboard (Socket LGA1156) MSI P55-GD65 (Rev. 1.0) Chipset: Intel P55, BIOS: 1.42 (09/08/2009)
CPU Intel Intel Core i5-750 (45nm, 2.66 GHz, 4 x 256KB L2 and 8MB Shared L3 Cache, TDP 95W, Rev. B1)
CPU Intel II Intel Core i5-750S (45nm, 2.4 GHz, 4 x 256KB L2 and 8MB Shared L3 Cache, TDP 82W, Rev. B1)
RAM DDR3 (dual) 2 x 2GB DDR3-1600 (Corsair CM3X2G1600C9DHX)
Graphics Zotac Geforce GTX 260² GPU: Geforce GTX 260 (576 MHz), Graphics RAM: 896MB DDR3 (1,998 MHz), Stream Processors: 216, Shader Clock: 1,242 MHz
Hard Drive Western Digital VelociRaptor, 300GB (WD3000HLFS) 10,000 RPM, SATA/300, 16MB Cache
Power Supply PC Power & Cooling, Silencer 750EPS12V 750W
System Software & Drivers
Operating System Windows Vista Enterprise Version 6.0 x64 Service Pack 2 (Build 6000)
Drivers and Settings
Intel Chipset Drivers Chipset Installation Utility Ver. 9.1.1.1015
Intel Storage Drivers Matrix Storage Drivers Ver. 8.8.0.1009