AMD Radeon RX 6900 XT vs AMD Radeon Pro 580
GPU Specs Compare
Graphics Card
Release Date
Oct 2020
Jun 2017
Generation
Navi II
Radeon Pro Mac
Type
Desktop
Mobile
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1825 MHz
1100 MHz
Boost Clock
2250 MHz
1200 MHz
Memory Clock
2000 MHz
1695 MHz
Memory
Memory Size
16GB
8GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
256bit
Bandwidth
512.0GB/s
217.0GB/s
Render Config
Compute Units
80
36
Shading Units
5120
2304
TMUs
320
144
ROPs
128
32
RT Cores
80
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
4 MB
2 MB
L3 Cache
128 MB
-
Theoretical Performance
Pixel Rate
288.0 GPixel/s
38.40 GPixel/s
Texture Rate
720.0 GTexel/s
172.8 GTexel/s
FP16 (half)
46.08 TFLOPS
5.530 TFLOPS
FP32 (float)
23.04 TFLOPS
5.530 TFLOPS
FP64 (double)
1440.0 GFLOPS
345.6 GFLOPS
Graphics Processor
GPU Name
Navi 21
Ellesmere
GPU Variant
Navi 21 XTX(215-121000167)
Ellesmere XTA(216-0886220)
Architecture
RDNA 2.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
7 nm
14 nm
Transistors
26.8 billion
5.7 billion
Die Size
520 mm²
232 mm²
Board Design
TDP
300W
185W
Suggested PSU
700 W
-
Outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
No outputs
Power Connectors
2x 8-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.1
Vulkan
1.4
1.2
Shader Model
6.8
6.4
📊 Benchmark
3DMark Time Spy
20,764
3,791
3DMark Time Spy Extreme
-
1,684