Radeon R7 Graphics and Radeon RX 640 - video card comparison
Radeon R7 Graphics
Radeon RX 640
Architecture
GCN 2.0 (2013−2017)
Polaris (2016−2019)
GPU code name
Spectre
Polaris 12
Market segment
Desktop
Laptop
Release date
January 2014
August 2019
Interface
IGP
PCIe 3.0 x8
Supplementary power connectors
-
None
Boost clock speed
980 MHz
1218 MHz
Core clock speed
686 MHz
1218 MHz
Floating-point performance
526.8 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
2,410 million
2,200 million
Pipelines / CUDA cores
512
640
Power consumption (TDP)
15 Watt
50 Watt
Texture fill rate
31.36
38.98
Memory type
System Shared
GDDR5
Maximum RAM amount
System Shared
4 GB
Memory bus width
System Shared
64 Bit
Memory clock speed
System Shared
6000 MHz
Memory bandwidth
-
112.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
12 (12_0)
12 (12_0)
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.0
6.4
Vulkan
1.2.131
1.2.131
FreeSync
-
+