GeForce 6600 and Radeon HD 8990 OEM - video card comparison
GeForce 6600
Radeon HD 8990 OEM
Architecture
Curie (2003−2013)
GCN 1.0 (2012−2020)
GPU code name
NV43 A2
Malta
Market segment
Desktop
Desktop
Release date
August 2004
April 2013
Interface
PCIe 1.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
2x 8-pin
Boost clock speed
-
1000 MHz
Core clock speed
300 MHz
950 MHz
Floating-point performance
-
2x 4,096 gflops
Manufacturing process technology
110 nm
28 nm
Number of transistors
146 million
4,313 million
Pipelines / CUDA cores
-
2048
Power consumption (TDP)
-
375 Watt
Texture fill rate
2.400
128.0
Memory type
DDR
GDDR5
Maximum RAM amount
256 MB
3 GB
Memory bus width
128 Bit
384 Bit
Memory clock speed
500 MHz
6000 MHz
Memory bandwidth
8 GB/s
288.0 GB/s
Display Connectors
1x DVI, 1x VGA, 1x S-Video
1x DVI, 4x mini-DisplayPort
DirectX
9.0c (9_3)
12 (11_1)
OpenCL
N/A
1.2
OpenGL
2.1
4.6
Shader Model
3.0
5.1
Vulkan
N/A
1.2.131