Home GPU Comparison AMD Radeon RX 7900M vs AMD Radeon R9 M385X

AMD Radeon RX 7900M vs AMD Radeon R9 M385X

We compared two Mobile platform GPUs: 16GB VRAM Radeon RX 7900M and 4GB VRAM Radeon R9 M385X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7900M 's Advantages
Released 8 years and 5 months late
Boost Clock has increased by 90% (2090MHz vs 1100MHz)
More VRAM (16GB vs 4GB)
Larger VRAM bandwidth (576.0GB/s vs 76.80GB/s)
3712 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon RX 7900M +1854%
38.52 TFLOPS
Radeon R9 M385X
1.971 TFLOPS
VS

Graphics Card

Oct 2023
Release Date
May 2015
Navi Mobile
Generation
Gem System
Mobile
Type
Mobile
PCIe 4.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

1825 MHz
Base Clock
1000 MHz
2090 MHz
Boost Clock
1100 MHz
2250 MHz
Memory Clock
1200 MHz

Memory

16GB
Memory Size
4GB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
128bit
576.0GB/s
Bandwidth
76.80GB/s

Render Config

72
Compute Units
14
-
-
-
4608
Shading Units
896
288
TMUs
56
192
ROPs
16
-
-
-
72
RT Cores
-
256 KB per Array
L1 Cache
16 KB (per CU)
6 MB
L2 Cache
256 KB
64 MB
L3 Cache
-

Theoretical Performance

401.3 GPixel/s
Pixel Rate
17.60 GPixel/s
601.9 GTexel/s
Texture Rate
61.60 GTexel/s
77.05 TFLOPS
FP16 (half)
-
38.52 TFLOPS
FP32 (float)
1.971 TFLOPS
1204 GFLOPS
FP64 (double)
123.2 GFLOPS

Board Design

180W
TDP
Unknown
-
-
-
Portable Device Dependent
Outputs
Portable Device Dependent
None
Power Connectors
-

Graphics Processor

Navi 31
GPU Name
Strato
Navi 31
GPU Variant
Strato XT
RDNA 3.0
Architecture
GCN 2.0
TSMC
Foundry
TSMC
5 nm
Process Size
28 nm
57.7 billion
Transistors
2.08 billion
529 mm²
Die Size
160 mm²

Graphics Features

12 Ultimate (12_2)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.2
OpenCL
2.1
1.3
Vulkan
1.2.170
-
-
-
6.7
Shader Model
6.5

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