archlinux
AMD Athlon 64 X2 4600+ testing with a Gigabyte M55S-S3 and NVIDIA GeForce GTS 450 1024MB on Arch via the Phoronix Test Suite.


kde_3d_enabled: 

	Processor: AMD Athlon 64 X2 4600+ @ 2.41GHz (2 Cores), Motherboard: Gigabyte M55S-S3, Chipset: NVIDIA MCP55, Memory: 4096MB, Disk: 1000GB SAMSUNG HD103SJ, Graphics: NVIDIA GeForce GTS 450 1024MB (783/1804MHz), Audio: Realtek ALC888

	OS: Arch, Kernel: 3.2.1-1-ARCH (x86_64), Desktop: KDE 4.7.4, Display Server: X Server 1.11.3, Display Driver: NVIDIA 290.10, OpenGL: 4.2.0 NVIDIA 290.10, Compiler: GCC 4.6.2, File-System: ext4, Screen Resolution: 1920x1080

kde_3d_disabled: 

	Processor: AMD Athlon 64 X2 4600+ @ 2.41GHz (2 Cores), Motherboard: Gigabyte M55S-S3, Chipset: NVIDIA MCP55, Memory: 4096MB, Disk: 1000GB SAMSUNG HD103SJ, Graphics: NVIDIA GeForce GTS 450 1024MB (783/1804MHz), Audio: Realtek ALC888

	OS: Arch, Kernel: 3.2.1-1-ARCH (x86_64), Desktop: KDE 4.7.4, Display Server: X Server 1.11.3, Display Driver: NVIDIA 290.10, OpenGL: 4.2.0 NVIDIA 290.10, Compiler: GCC 4.6.2, File-System: ext4, Screen Resolution: 1920x1080


Nexuiz 2.5.2
1920 x 1080 w/ HDR
Frames Per Second > Higher Is Better
kde_3d_enabled .. 83.95 |=====================================================
kde_3d_disabled . 85.57 |======================================================


Unigine Sanctuary 2.3
1920 x 1080
Frames Per Second > Higher Is Better
kde_3d_enabled .. 55.75 |======================================================
kde_3d_disabled . 55.97 |======================================================


Unigine Tropics 1.3
1920 x 1080
Frames Per Second > Higher Is Better
kde_3d_enabled .. 45.73 |======================================================
kde_3d_disabled . 45.88 |======================================================


GtkPerf 0.40
GtkDrawingArea - Pixbufs
Seconds < Lower Is Better
kde_3d_enabled .. 3.80 |=======================================================
kde_3d_disabled . 2.50 |====================================


QGears2
XRender + Image Scaling
Frames Per Second > Higher Is Better
kde_3d_enabled .. 184.49 |===================================================
kde_3d_disabled . 190.86 |=====================================================