GeForce 7900 GX2 and Radeon R7 M520 - video card comparison
GeForce 7900 GX2
Radeon R7 M520
Architecture
Curie (2003−2013)
GCN 1.0 (2012−2020)
GPU code name
G71
Oland
Market segment
Desktop
Desktop
Release date
April 2006
April 2017
Interface
PCIe 1.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
None
Core clock speed
500 MHz
1030 MHz
Floating-point performance
-
659.2 gflops
Manufacturing process technology
90 nm
28 nm
Number of transistors
278 million
1,040 million
Pipelines / CUDA cores
-
320
Power consumption (TDP)
-
50 Watt
Texture fill rate
12.00
20.60
Memory type
GDDR3
DDR3
Maximum RAM amount
512 MB
2 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1200 MHz
2000 MHz
Memory bandwidth
38.4 GB/s
16 GB/s
Display Connectors
2x DVI, 1x S-Video
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
9.0c (9_3)
12.0
OpenCL
N/A
1.2
OpenGL
2.1
4.6
Shader Model
3.0
5.0
Vulkan
N/A
-