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GPU Comparison
AMD Radeon RX 640 Mobile vs AMD Radeon HD 7850M
AMD Radeon RX 640 Mobile vs AMD Radeon HD 7850M
VS
AMD Radeon RX 640 Mobile
AMD Radeon HD 7850M
We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 2GB VRAM Radeon HD 7850M 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 7 years and 1 months late
Boost Clock1218MHz
AMD Radeon HD 7850M 's Advantages
Larger VRAM bandwidth (64.00GB/s vs 48.00GB/s)
Lower TDP (40W vs 50W)
Score
Benchmark
FP32 (float)
Radeon RX 640 Mobile
+80%
1.559 TFLOPS
Radeon HD 7850M
0.864 TFLOPS
Radeon RX 640 Mobile
VS
Radeon HD 7850M
Graphics Card
May 2019
Release Date
Apr 2012
Mobility Radeon
Generation
London
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
1000 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
128bit
48.00GB/s
Bandwidth
64.00GB/s
Render Config
-
SM Count
-
10
Compute Units
10
640
Shading Units
640
40
TMUs
40
16
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
256 KB
Theoretical Performance
19.49 GPixel/s
Pixel Rate
10.80 GPixel/s
48.72 GTexel/s
Texture Rate
27.00 GTexel/s
1.559 TFLOPS
FP16 (half)
-
1.559 TFLOPS
FP32 (float)
864.0 GFLOPS
97.44 GFLOPS
FP64 (double)
54.00 GFLOPS
Graphics Processor
Polaris 23
GPU Name
Heathrow
Polaris 23 XT
GPU Variant
Heathrow PRO
GCN 4.0
Architecture
GCN 1.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
2.2 billion
Transistors
1.5 billion
103 mm²
Die Size
123 mm²
Board Design
50W
TDP
40W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
-
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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8
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9
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10
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