Radeon HD 6950 and Radeon RX 640 - video card comparison
Passmark - benchmark score Radeon HD 6950 vs Radeon RX 640
Radeon HD 6950
2693
Radeon RX 640
2020
Radeon HD 6950
Radeon RX 640
Architecture
TeraScale 3 (2010−2013)
Polaris (2016−2019)
GPU code name
Cayman
Polaris 12
Market segment
Desktop
Laptop
Release date
December 2010
August 2019
Bus support
PCIe 2.0 x16
-
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
None
Boost clock speed
800 MHz
1218 MHz
Core clock speed
-
1218 MHz
Floating-point performance
2,252.8 gflops
-
Manufacturing process technology
40 nm
14 nm
Number of transistors
2,640 million
2,200 million
Pipelines / CUDA cores
1408
640
Power consumption (TDP)
500 Watt
50 Watt
Texture fill rate
70.40
38.98
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1250 MHz
6000 MHz
Memory bandwidth
-
112.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
Eyefinity
1
-
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
12 (12_0)
Mantle
-
-
OpenCL
1.2
2.0
OpenGL
4.4
4.6
Shader Model
5.0
6.4
Vulkan
-
1.2.131
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
-
+
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-