Radeon HD 6670 and Radeon RX 640 - video card comparison
Passmark - benchmark score Radeon HD 6670 vs Radeon RX 640
Radeon HD 6670
752
Radeon RX 640
2020
Radeon HD 6670
Radeon RX 640
Architecture
TeraScale 2 (2009−2015)
Polaris (2016−2019)
GPU code name
Turks
Polaris 12
Market segment
Desktop
Laptop
Release date
April 2011
August 2019
Bus support
PCIe 2.0 x16
-
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
None
None
Boost clock speed
800 MHz
1218 MHz
Core clock speed
-
1218 MHz
Floating-point performance
768.0 gflops
-
Manufacturing process technology
40 nm
14 nm
Number of transistors
716 million
2,200 million
Pipelines / CUDA cores
480
640
Power consumption (TDP)
66 Watt
50 Watt
Texture fill rate
19.20
38.98
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1050 MHz
6000 MHz
Memory bandwidth
64 GB/s
112.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x VGA
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
-
-