GeForce 7900 GTX and Radeon HD 6450 GDDR5 - video card comparison
GeForce 7900 GTX
Radeon HD 6450 GDDR5
Architecture
Curie (2003−2013)
Terascale 2 (2009−2015)
GPU code name
G71
Caicos
Market segment
Desktop
Desktop
Release date
March 2006
April 2011
Interface
PCIe 1.0 x16
-
Supplementary power connectors
1x 6-pin
-
Core clock speed
650 MHz
750 MHz
Manufacturing process technology
90 nm
40 nm
Number of transistors
278 million
-
Pipelines / CUDA cores
-
160
Power consumption (TDP)
84 Watt
27 Watt
Texture fill rate
15.60
-
Memory type
GDDR3
GDDR5
Maximum RAM amount
512 MB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1600 MHz
900 MHz
Memory bandwidth
51.2 GB/s
-
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
-
DirectX
9.0c (9_3)
11
OpenCL
N/A
-
OpenGL
2.1
-
Shader Model
3.0
-
Vulkan
N/A
-