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GPU Comparison
AMD Radeon RX 6600S vs ATI Mobility Radeon HD 3870
AMD Radeon RX 6600S vs ATI Mobility Radeon HD 3870
VS
AMD Radeon RX 6600S
ATI Mobility Radeon HD 3870
We compared two Mobile platform GPUs: 4GB VRAM Radeon RX 6600S and 512MB VRAM Mobility Radeon HD 3870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6600S 's Advantages
Released 13 years and 7 months late
Boost Clock2000MHz
Larger VRAM bandwidth (224.0GB/s vs 54.40GB/s)
1472 additional rendering cores
ATI Mobility Radeon HD 3870 's Advantages
Lower TDP (55W vs 80W)
Score
Benchmark
FP32 (float)
Radeon RX 6600S
+1598%
7.168 TFLOPS
Mobility Radeon HD 3870
0.422 TFLOPS
Radeon RX 6600S
VS
Mobility Radeon HD 3870
Graphics Card
Jan 2022
Release Date
Jun 2008
Mobility Radeon
Generation
M8x
Mobile
Type
Mobile
PCIe 4.0 x8
Bus Interface
PCIe 2.0 x16
Clock Speeds
1700 MHz
Base Clock
-
2000 MHz
Boost Clock
-
1750 MHz
Memory Clock
850 MHz
Memory
4GB
Memory Size
512MB
GDDR6
Memory Type
GDDR3
128bit
Memory Bus
256bit
224.0GB/s
Bandwidth
54.40GB/s
Render Config
-
SM Count
-
28
Compute Units
4
1792
Shading Units
320
112
TMUs
16
64
ROPs
16
-
Tensor Cores
-
28
RT Cores
-
128 KB per Array
L1 Cache
-
2 MB
L2 Cache
256 KB
Theoretical Performance
128.0 GPixel/s
Pixel Rate
10.56 GPixel/s
224.0 GTexel/s
Texture Rate
10.56 GTexel/s
14.34 TFLOPS
FP16 (half)
-
7.168 TFLOPS
FP32 (float)
422.4 GFLOPS
448.0 GFLOPS
FP64 (double)
84.48 GFLOPS
Graphics Processor
Navi 23
GPU Name
M88
-
GPU Variant
-
RDNA 2.0
Architecture
TeraScale
TSMC
Foundry
TSMC
7 nm
Process Size
55 nm
11.06 billion
Transistors
0.666 billion
237 mm²
Die Size
192 mm²
Board Design
80W
TDP
55W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Features
12 Ultimate (12_2)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
2.1
OpenCL
N/A
1.3
Vulkan
N/A
-
CUDA
-
6.5
Shader Model
4.1
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