AMD Radeon RX 640 Mobile vs AMD Radeon RX 570X
GPU · Specs Compare
Graphics Card
Release Date
May 2019
Apr 2018
Generation
Mobility Radeon
Polaris
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
1082 MHz
1168 MHz
Boost Clock
1218 MHz
1244 MHz
Memory Clock
1500 MHz
1750 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
64bit
256bit
Bandwidth
48.00GB/s
224.0GB/s
Render Config
Compute Units
10
32
Shading Units
640
2048
TMUs
40
128
ROPs
16
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
2 MB
Theoretical Performance
Pixel Rate
19.49 GPixel/s
39.81 GPixel/s
Texture Rate
48.72 GTexel/s
159.2 GTexel/s
FP16 (half)
1.559 TFLOPS
5.095 TFLOPS
FP32 (float)
1.559 TFLOPS
5.095 TFLOPS
FP64 (double)
97.44 GFLOPS
318.5 GFLOPS
Graphics Processor
GPU Name
Polaris 23
Polaris 20
GPU Variant
Polaris 23 XT
Polaris 20 XL(215-0910052)
Architecture
GCN 4.0
GCN 4.0
Foundry
GlobalFoundries
GlobalFoundries
Process Size
14 nm
14 nm
Transistors
2.2 billion
5.7 billion
Die Size
103 mm²
232 mm²
Board Design
TDP
50W
150W
Outputs
No outputs
1x DVI1x HDMI 2.0b3x DisplayPort 1.4a
Power Connectors
None
1x 6-pin
Suggested PSU
—
450 W
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.1
Vulkan
1.2
1.2
Shader Model
6.4
6.4
▲ Specs Compare
Data sourced from official specifications and benchmark tests.