Radeon R9 M270X and GeForce GT 640 - video card comparison
Passmark - benchmark score Radeon R9 M270X vs GeForce GT 640
Radeon R9 M270X
1240
GeForce GT 640
1210
Radeon R9 M270X
GeForce GT 640
Architecture
GCN 1.0 (2012−2020)
Kepler (2012−2018)
GPU code name
Venus
GK107
Market segment
Desktop
Desktop
Release date
March 2014
June 2012
Bus support
PCIe 3.0 x16
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
-
None
Boost clock speed
775 MHz
-
Compute units
10
-
Core clock speed
725 MHz
902 MHz
Floating-point performance
1,536 gflops
692.7 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
1,270 million
Pipelines / CUDA cores
640
384
Power consumption (TDP)
-
65 Watt
Texture fill rate
31.00
28.86
Memory type
GDDR5
DDR3
Maximum RAM amount
4 GB
2 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1125 MHz
1782 MHz
Memory bandwidth
72 GB/s
28.51 GB/s
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
Eyefinity
1
-
HDMI
-
+
DirectX
DirectX® 11
12 (11_0)
CUDA
-
3.0
Mantle
+
-
OpenCL
Not Listed
1.2
OpenGL
4.4
4.6
Shader Model
5.1
5.1
Vulkan
-
1.1.126
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-