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GPU Comparison
AMD Radeon HD 6625M vs AMD Radeon R9 M390X
AMD Radeon HD 6625M vs AMD Radeon R9 M390X
VS
AMD Radeon HD 6625M
AMD Radeon R9 M390X
We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6625M and 4GB VRAM Radeon R9 M390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6625M 's Advantages
Lower TDP (26W vs 75W)
AMD Radeon R9 M390X 's Advantages
Released 4 years and 4 months late
More VRAM (4GB vs 1GB)
Larger VRAM bandwidth (160.0GB/s vs 25.60GB/s)
1568 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6625M
0.432 TFLOPS
Radeon R9 M390X
+585%
2.961 TFLOPS
Radeon HD 6625M
VS
Radeon R9 M390X
Graphics Card
Jan 2011
Release Date
May 2015
Vancouver
Generation
Crystal System
Mobile
Type
Mobile
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
800 MHz
Memory Clock
1250 MHz
Memory
1024MB
Memory Size
4GB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
256bit
25.60GB/s
Bandwidth
160.0GB/s
Render Config
-
SM Count
-
6
Compute Units
32
480
Shading Units
2048
24
TMUs
128
8
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
512 KB
Theoretical Performance
3.600 GPixel/s
Pixel Rate
23.14 GPixel/s
10.80 GTexel/s
Texture Rate
92.54 GTexel/s
-
FP16 (half)
2.961 TFLOPS
432.0 GFLOPS
FP32 (float)
2.961 TFLOPS
-
FP64 (double)
185.1 GFLOPS
Graphics Processor
Whistler
GPU Name
Amethyst
Whistler LP
GPU Variant
Amethyst XT
TeraScale 2
Architecture
GCN 3.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
0.716 billion
Transistors
5 billion
104 mm²
Die Size
366 mm²
Board Design
26W
TDP
75W
-
Suggested PSU
-
No outputs
Outputs
No outputs
-
Power Connectors
None
Graphics Features
11.2 (11_0)
DirectX
12 (12_0)
4.4
OpenGL
4.6
1.2
OpenCL
2.0
N/A
Vulkan
1.2
-
CUDA
-
5.0
Shader Model
6.3
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