Radeon HD 4850 and GeForce 8800 GTS 640 - video card comparison
Radeon HD 4850
GeForce 8800 GTS 640
Architecture
Terascale 1 (2008−2010)
Tesla (2006−2010)
GPU code name
RV770
G80
Market segment
Desktop
Desktop
Release date
June 2008
November 2006
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin
Core clock speed
625 MHz
513 MHz
Floating-point performance
1,000.0 gflops
228.1 gflops
Manufacturing process technology
55 nm
90 nm
Number of transistors
956 million
681 million
Pipelines / CUDA cores
800
96
Power consumption (TDP)
110 Watt
143 Watt
Texture fill rate
25.00
24.62
Memory type
GDDR3
GDDR3
Maximum RAM amount
512 MB
640 MB
Memory bus width
256 Bit
320 Bit
Memory clock speed
993 MHz
1584 MHz
Memory bandwidth
63.55 GB/s
63.36 GB/s
Display Connectors
2x DVI, 1x S-Video
2x DVI, 1x S-Video
DirectX
10.1 (10_1)
11.1 (10_0)
CUDA
-
+
OpenCL
1.1
1.1
OpenGL
3.3
3.3
Shader Model
4.1
4.0
Vulkan
N/A
N/A