AMD Radeon RX 6800M vs AMD Radeon R9 M395X Mac Edition
GPU · Specs Compare
Graphics Card
Release Date
May 2021
May 2015
Generation
Mobility Radeon
Crystal System
Type
Mobile
Mobile
Bus Interface
PCIe 4.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
2116 MHz
—
Boost Clock
2390 MHz
—
Memory Clock
2000 MHz
1365 MHz
Memory
Memory Size
12GB
4GB
Memory Type
GDDR6
GDDR5
Memory Bus
192bit
256bit
Bandwidth
384.0GB/s
174.7GB/s
Render Config
Compute Units
40
32
Shading Units
2560
2048
TMUs
160
128
ROPs
64
32
RT Cores
40
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
3 MB
512 KB
L3 Cache
96 MB
—
Theoretical Performance
Pixel Rate
153.0 GPixel/s
29.09 GPixel/s
Texture Rate
382.4 GTexel/s
116.4 GTexel/s
FP16 (half)
24.47 TFLOPS
3.723 TFLOPS
FP32 (float)
12.24 TFLOPS
3.723 TFLOPS
FP64 (double)
764.8 GFLOPS
232.7 GFLOPS
Graphics Processor
GPU Name
Navi 22
Amethyst
GPU Variant
Navi 22 XTM
Amethyst XT
Architecture
RDNA 2.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
17.2 billion
5 billion
Die Size
335 mm²
366 mm²
Board Design
TDP
145W
250W
Outputs
No outputs
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.0
Vulkan
1.3
1.2
Shader Model
6.5
6.3
Benchmark
3DMark Time Spy
11,498
—
3DMark Time Spy Extreme
5,418
—
3DMark Speed Way
2,096
—
Blender
1,568
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.