Radeon HD 8970M and GeForce GT 640 - video card comparison
Passmark - benchmark score Radeon HD 8970M vs GeForce GT 640
Radeon HD 8970M
3992
GeForce GT 640
1209
Radeon HD 8970M
GeForce GT 640
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Neptune
GK107
Market segment
Laptop
Desktop
Release date
May 2013
June 2012
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
-
None
Boost clock speed
900 MHz
-
Core clock speed
850 MHz
902 MHz
Floating-point performance
2,304 gflops
692.7 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
1,270 million
Pipelines / CUDA cores
1280
384
Power consumption (TDP)
100 Watt
65 Watt
Texture fill rate
72.00
28.86
Memory type
GDDR5
DDR3
Maximum RAM amount
4 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
4800 MHz
1782 MHz
Memory bandwidth
153.6 GB/s
28.51 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
12 (11_1)
12 (11_0)
CUDA
-
3.0
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.1.126