Radeon HD 7970 X2 and GeForce4 MX 420 - video card comparison
Radeon HD 7970 X2
GeForce4 MX 420
Architecture
GCN 1.0 (2012−2020)
Celsius (1999−2005)
GPU code name
New Zealand
NV17 A3
Market segment
Desktop
Desktop
Release date
August 2012
February 2002
Interface
PCIe 3.0 x16
AGP 4x
Supplementary power connectors
3x 8-pin
None
Core clock speed
925 MHz
250 MHz
Floating-point performance
2x 3,789 gflops
-
Manufacturing process technology
28 nm
150 nm
Number of transistors
4,313 million
29 million
Pipelines / CUDA cores
2048
-
Power consumption (TDP)
500 Watt
-
Texture fill rate
118.4
1.000
Memory type
GDDR5
SDR
Maximum RAM amount
3 GB
64 MB
Memory bus width
384 Bit
64 Bit
Memory clock speed
5500 MHz
166 MHz
Memory bandwidth
264.0 GB/s
1.328 GB/s
Display Connectors
1x DVI, 4x mini-DisplayPort
1x VGA, 1x S-Video
DirectX
12 (11_1)
8.0
OpenCL
1.2
N/A
OpenGL
4.6
1.3
Shader Model
5.1
-
Vulkan
1.2.131
N/A