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GPU Comparison
AMD Radeon R9 M390X vs AMD Radeon RX 6600S
AMD Radeon R9 M390X vs AMD Radeon RX 6600S
VS
AMD Radeon R9 M390X
AMD Radeon RX 6600S
We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M390X and 4GB VRAM Radeon RX 6600S to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 M390X 's Advantages
256 additional rendering cores
Lower TDP (75W vs 80W)
AMD Radeon RX 6600S 's Advantages
Released 6 years and 8 months late
Boost Clock2000MHz
Larger VRAM bandwidth (224.0GB/s vs 160.0GB/s)
Score
Benchmark
FP32 (float)
Radeon R9 M390X
2.961 TFLOPS
Radeon RX 6600S
+142%
7.168 TFLOPS
Radeon R9 M390X
VS
Radeon RX 6600S
Graphics Card
May 2015
Release Date
Jan 2022
Crystal System
Generation
Mobility Radeon
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 4.0 x8
Clock Speeds
-
Base Clock
1700 MHz
-
Boost Clock
2000 MHz
1250 MHz
Memory Clock
1750 MHz
Memory
4GB
Memory Size
4GB
GDDR5
Memory Type
GDDR6
256bit
Memory Bus
128bit
160.0GB/s
Bandwidth
224.0GB/s
Render Config
-
SM Count
-
32
Compute Units
28
2048
Shading Units
1792
128
TMUs
112
32
ROPs
64
-
Tensor Cores
-
-
RT Cores
28
16 KB (per CU)
L1 Cache
128 KB per Array
512 KB
L2 Cache
2 MB
Theoretical Performance
23.14 GPixel/s
Pixel Rate
128.0 GPixel/s
92.54 GTexel/s
Texture Rate
224.0 GTexel/s
2.961 TFLOPS
FP16 (half)
14.34 TFLOPS
2.961 TFLOPS
FP32 (float)
7.168 TFLOPS
185.1 GFLOPS
FP64 (double)
448.0 GFLOPS
Graphics Processor
Amethyst
GPU Name
Navi 23
Amethyst XT
GPU Variant
-
GCN 3.0
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
7 nm
5 billion
Transistors
11.06 billion
366 mm²
Die Size
237 mm²
Board Design
75W
TDP
80W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Features
12 (12_0)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
2.0
OpenCL
2.1
1.2
Vulkan
1.3
-
CUDA
-
6.3
Shader Model
6.5
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