Radeon HD 6970 and GeForce GT 640M - video card comparison
Passmark - benchmark score Radeon HD 6970 vs GeForce GT 640M
Radeon HD 6970
2921
GeForce GT 640M
946
Radeon HD 6970
GeForce GT 640M
Architecture
Terascale 2 (2009−2015)
Kepler (2012−2018)
GPU code name
Cayman
N13P-GS
Market segment
Desktop
Laptop
Release date
December 2010
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
1x 6-pin + 1x 8-pin
-
Boost clock speed
880 MHz
645 MHz
Core clock speed
-
Up to 625 MHz
CUDA cores
-
384
Floating-point performance
2,703.4 gflops
480.0 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
2,640 million
1,270 million
Pipelines / CUDA cores
1536
384
Power consumption (TDP)
550 Watt
32 Watt
Texture fill rate
84.48
Up to 20.0 billion/sec
Memory type
DDR5
DDR3\GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
128bit
Memory clock speed
1375 MHz
1800 - 4000 MHz
Memory bandwidth
-
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
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
-
-