AMD Radeon RX 6800 3456SP vs AMD Radeon RX 580 2048SP
GPU · Specs Compare
Graphics Card
Release Date
Unknown
Oct 2018
Generation
Navi II
Polaris
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1700 MHz
1168 MHz
Boost Clock
2250 MHz
1284 MHz
Memory Clock
2000 MHz
1750 MHz
Memory
Memory Size
16GB
4GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
256bit
Bandwidth
512.0GB/s
224.0GB/s
Render Config
Compute Units
54
32
Shading Units
3456
2048
TMUs
216
128
ROPs
96
32
RT Cores
54
—
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
4 MB
2 MB
L3 Cache
128 MB
—
Theoretical Performance
Pixel Rate
216.0 GPixel/s
41.09 GPixel/s
Texture Rate
486.0 GTexel/s
164.4 GTexel/s
FP16 (half)
31.10 TFLOPS
5.259 TFLOPS
FP32 (float)
15.55 TFLOPS
5.259 TFLOPS
FP64 (double)
972.0 GFLOPS
328.7 GFLOPS
Graphics Processor
GPU Name
Navi 21
Polaris 20
GPU Variant
Navi 21 ES(215-121000066)
Polaris 20 XL(215-0910052)
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
250W
150W
Suggested PSU
600 W
450 W
Outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
1x DVI1x HDMI 2.0b3x DisplayPort 1.4a
Power Connectors
2x 8-pin
1x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.1
Vulkan
1.3
1.2
Shader Model
6.8
6.4
Benchmark
3DMark Time Spy
—
3,826
▲ Specs Compare
Data sourced from official specifications and benchmark tests.