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GPU Comparison
AMD Radeon RX 7900M vs AMD Radeon HD 7850M
AMD Radeon RX 7900M vs AMD Radeon HD 7850M
VS
AMD Radeon RX 7900M
AMD Radeon HD 7850M
We compared two Mobile platform GPUs: 16GB VRAM Radeon RX 7900M 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 7900M 's Advantages
Released 11 years and 6 months late
Boost Clock2090MHz
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (576.0GB/s vs 64.00GB/s)
3968 additional rendering cores
AMD Radeon HD 7850M 's Advantages
Lower TDP (40W vs 180W)
Score
Benchmark
FP32 (float)
Radeon RX 7900M
+4358%
38.52 TFLOPS
Radeon HD 7850M
0.864 TFLOPS
Radeon RX 7900M
VS
Radeon HD 7850M
Graphics Card
Oct 2023
Release Date
Apr 2012
Navi Mobile
Generation
London
Mobile
Type
Mobile
PCIe 4.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
1825 MHz
Base Clock
-
2090 MHz
Boost Clock
-
2250 MHz
Memory Clock
1000 MHz
Memory
16GB
Memory Size
2GB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
128bit
576.0GB/s
Bandwidth
64.00GB/s
Render Config
-
SM Count
-
72
Compute Units
10
4608
Shading Units
640
288
TMUs
40
192
ROPs
16
-
Tensor Cores
-
72
RT Cores
-
256 KB per Array
L1 Cache
16 KB (per CU)
6 MB
L2 Cache
256 KB
Theoretical Performance
401.3 GPixel/s
Pixel Rate
10.80 GPixel/s
601.9 GTexel/s
Texture Rate
27.00 GTexel/s
77.05 TFLOPS
FP16 (half)
-
38.52 TFLOPS
FP32 (float)
864.0 GFLOPS
1204 GFLOPS
FP64 (double)
54.00 GFLOPS
Graphics Processor
Navi 31
GPU Name
Heathrow
Navi 31
GPU Variant
Heathrow PRO
RDNA 3.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
5 nm
Process Size
28 nm
57.7 billion
Transistors
1.5 billion
529 mm²
Die Size
123 mm²
Board Design
180W
TDP
40W
-
Suggested PSU
-
Portable Device Dependent
Outputs
No outputs
None
Power Connectors
-
Graphics Features
12 Ultimate (12_2)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.2
OpenCL
1.2
1.3
Vulkan
1.2
-
CUDA
-
6.7
Shader Model
5.1
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