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GPU Comparison
AMD Radeon RX 640 Mobile vs AMD Radeon R9 M390 Mac Edition
AMD Radeon RX 640 Mobile vs AMD Radeon R9 M390 Mac Edition
VS
AMD Radeon RX 640 Mobile
AMD Radeon R9 M390 Mac Edition
We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 2GB VRAM Radeon R9 M390 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 640 Mobile 's Advantages
Released 4 years late
Boost Clock1218MHz
Lower TDP (50W vs 80W)
AMD Radeon R9 M390 Mac Edition 's Advantages
Larger VRAM bandwidth (174.7GB/s vs 48.00GB/s)
384 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon RX 640 Mobile
1.559 TFLOPS
Radeon R9 M390 Mac Edition
+25%
1.962 TFLOPS
Radeon RX 640 Mobile
VS
Radeon R9 M390 Mac Edition
Graphics Card
May 2019
Release Date
May 2015
Mobility Radeon
Generation
Crystal System
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16
Clock Speeds
1082 MHz
Base Clock
-
1218 MHz
Boost Clock
-
1500 MHz
Memory Clock
1365 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
256bit
48.00GB/s
Bandwidth
174.7GB/s
Render Config
-
SM Count
-
10
Compute Units
16
640
Shading Units
1024
40
TMUs
64
16
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
512 KB
Theoretical Performance
19.49 GPixel/s
Pixel Rate
30.66 GPixel/s
48.72 GTexel/s
Texture Rate
61.31 GTexel/s
1.559 TFLOPS
FP16 (half)
-
1.559 TFLOPS
FP32 (float)
1.962 TFLOPS
97.44 GFLOPS
FP64 (double)
122.6 GFLOPS
Graphics Processor
Polaris 23
GPU Name
Pitcairn
Polaris 23 XT
GPU Variant
Pitcairn PRO (215-0828062)
GCN 4.0
Architecture
GCN 1.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
2.2 billion
Transistors
2.8 billion
103 mm²
Die Size
212 mm²
Board Design
50W
TDP
80W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Features
12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.1
OpenCL
1.2
1.2
Vulkan
1.2
-
CUDA
-
6.4
Shader Model
5.1
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