AMD Radeon R9 M395X Mac Edition vs AMD Radeon RX 6800M
We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M395X Mac Edition and 12GB VRAM Radeon RX 6800M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6800M 's Advantages
Released 6 years late
Boost Clock2390MHz
More VRAM (12GB vs 4GB)
Larger VRAM bandwidth (384.0GB/s vs 174.7GB/s)
512 additional rendering cores
Lower TDP (145W vs 250W)
Score
Benchmark
FP32 (float)
Radeon R9 M395X Mac Edition
3.723 TFLOPS
Radeon RX 6800M
+228%
12.24 TFLOPS
Graphics Card
May 2015
Release Date
May 2021
Crystal System
Generation
Mobility Radeon
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
2116 MHz
-
Boost Clock
2390 MHz
1365 MHz
Memory Clock
2000 MHz
Memory
4GB
Memory Size
12GB
GDDR5
Memory Type
GDDR6
256bit
Memory Bus
192bit
174.7GB/s
Bandwidth
384.0GB/s
Render Config
32
Compute Units
40
-
-
-
2048
Shading Units
2560
128
TMUs
160
32
ROPs
64
-
-
-
-
RT Cores
40
16 KB (per CU)
L1 Cache
128 KB per Array
512 KB
L2 Cache
3 MB
-
L3 Cache
96 MB
Theoretical Performance
29.09 GPixel/s
Pixel Rate
153.0 GPixel/s
116.4 GTexel/s
Texture Rate
382.4 GTexel/s
3.723 TFLOPS
FP16 (half)
24.47 TFLOPS
3.723 TFLOPS
FP32 (float)
12.24 TFLOPS
232.7 GFLOPS
FP64 (double)
764.8 GFLOPS
Board Design
250W
TDP
145W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Processor
Amethyst
GPU Name
Navi 22
Amethyst XT
GPU Variant
Navi 22 XTM
GCN 3.0
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
7 nm
5 billion
Transistors
17.2 billion
366 mm²
Die Size
335 mm²
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
-
-
-
6.3
Shader Model
6.5
