Radeon HD 6670 and GeForce GT 640M - video card comparison
Passmark - benchmark score Radeon HD 6670 vs GeForce GT 640M
Radeon HD 6670
752
GeForce GT 640M
943
Radeon HD 6670
GeForce GT 640M
Architecture
TeraScale 2 (2009−2015)
Kepler (2012−2018)
GPU code name
Turks
N13P-GS
Market segment
Desktop
Laptop
Release date
April 2011
March 2012
Bus support
PCIe 2.0 x16
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
-
Boost clock speed
800 MHz
645 MHz
Core clock speed
-
Up to 625 MHz
CUDA cores
-
384
Floating-point performance
768.0 gflops
480.0 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
716 million
1,270 million
Pipelines / CUDA cores
480
384
Power consumption (TDP)
66 Watt
32 Watt
Texture fill rate
19.20
Up to 20.0 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
128 Bit
128bit
Memory clock speed
1050 MHz
1800 - 4000 MHz
Memory bandwidth
64 GB/s
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x VGA
No outputs
Eyefinity
1
-
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DisplayPort support
-
-
DirectX
DirectX® 11
12 API
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.4
4.5
Shader Model
5.0
5.1
Vulkan
-
1.1.126
3D Blu-Ray
-
+
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
HD3D
-
-
Optimus
-
+
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-