Radeon HD 2900 PRO and GeForce 8800 GTS 640 - video card comparison
Radeon HD 2900 PRO
GeForce 8800 GTS 640
Architecture
TeraScale (2005−2013)
Tesla (2006−2010)
GPU code name
R600
G80
Market segment
Desktop
Desktop
Release date
December 2007
November 2006
Interface
PCIe 1.0 x16
PCIe 1.0 x16
Supplementary power connectors
1x 8-pin
1x 6-pin
Core clock speed
600 MHz
513 MHz
Floating-point performance
384.0 gflops
228.1 gflops
Manufacturing process technology
80 nm
90 nm
Number of transistors
720 million
681 million
Pipelines / CUDA cores
320
96
Power consumption (TDP)
200 Watt
143 Watt
Texture fill rate
9.600
24.62
Memory type
GDDR3
GDDR3
Maximum RAM amount
512 MB
640 MB
Memory bus width
256 Bit
320 Bit
Memory clock speed
1600 MHz
1584 MHz
Memory bandwidth
51.2 GB/s
63.36 GB/s
Display Connectors
2x DVI, 1x S-Video
2x DVI, 1x S-Video
DirectX
10.0 (10_0)
11.1 (10_0)
CUDA
-
+
OpenCL
N/A
1.1
OpenGL
3.3
3.3
Shader Model
4.0
4.0
Vulkan
N/A
N/A