AMD Radeon Pro W6900X vs AMD Radeon R9 M390 Mac Edition
GPU Specs Compare
Graphics Card
Release Date
Aug 2021
May 2015
Generation
Radeon Pro Mac
Crystal System
Type
Desktop
Mobile
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1825 MHz
-
Boost Clock
2150 MHz
-
Memory Clock
2000 MHz
1365 MHz
Memory
Memory Size
32GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
256bit
Bandwidth
512.0GB/s
174.7GB/s
Render Config
Compute Units
80
16
Shading Units
5120
1024
TMUs
320
64
ROPs
128
32
RT Cores
80
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
4 MB
512 KB
L3 Cache
128 MB
-
Theoretical Performance
Pixel Rate
275.2 GPixel/s
30.66 GPixel/s
Texture Rate
688.0 GTexel/s
61.31 GTexel/s
FP16 (half)
44.03 TFLOPS
-
FP32 (float)
22.02 TFLOPS
1.962 TFLOPS
FP64 (double)
1376 GFLOPS
122.6 GFLOPS
Graphics Processor
GPU Name
Navi 21
Pitcairn
GPU Variant
Navi 21 Pro-XTA
Pitcairn PRO(215-0828062)
Architecture
RDNA 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
26.8 billion
2.8 billion
Die Size
520 mm²
212 mm²
Board Design
TDP
300W
80W
Suggested PSU
700 W
-
Outputs
1x HDMI 2.14x Thunderbolt
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
2.1
1.2
Vulkan
1.3
1.2
Shader Model
6.5
5.1