AMD Radeon Pro Vega 20 vs AMD Radeon RX 7400
GPU · Specs Compare
Graphics Card
Release Date
Nov 2018
Aug 2025
Generation
Radeon Pro Mac
Navi III
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x8
Clock Speeds
Base Clock
815 MHz
1452 MHz
Boost Clock
1283 MHz
2300 MHz
Memory Clock
740 MHz
2250 MHz
Memory
Memory Size
4GB
8GB
Memory Type
HBM2
GDDR6
Memory Bus
1024bit
128bit
Bandwidth
189.4GB/s
288.0GB/s
Render Config
Compute Units
20
28
Shading Units
1280
1792
TMUs
80
112
ROPs
32
64
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
1024 KB
2 MB
RT Cores
—
28
L3 Cache
—
64 MB
Theoretical Performance
Pixel Rate
41.06 GPixel/s
147.2 GPixel/s
Texture Rate
102.6 GTexel/s
257.6 GTexel/s
FP16 (half)
6.569 TFLOPS
32.97 TFLOPS
FP32 (float)
3.284 TFLOPS
16.49 TFLOPS
FP64 (double)
205.3 GFLOPS
515.2 GFLOPS
Graphics Processor
GPU Name
Vega 12
Navi 33
GPU Variant
Vega 12 XTA
Navi 33
Architecture
GCN 5.0
RDNA 3.0
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
6 nm
Transistors
Unknown
13.3 billion
Die Size
Unknown
204 mm²
Board Design
TDP
100W
43W
Outputs
No outputs
1x HDMI 2.1a3x DisplayPort 2.1
Suggested PSU
—
200 W
Power Connectors
—
1x 6-pin
Graphics Features
DirectX
12 (12_1)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.1
2.2
Vulkan
1.2
1.3
Shader Model
6.3
6.8
Benchmark
3DMark Time Spy
2,596
—
3DMark Time Spy Extreme
1,211
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.