NVIDIA GeForce RTX 3080 Ti 20 GB vs AMD Radeon RX 580 Mobile
GPU · Specs Compare
Graphics Card
Release Date
Jun 2025
Apr 2017
Generation
Navi IV
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 5.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
1700 MHz
1000 MHz
Boost Clock
3130 MHz
1077 MHz
Memory Clock
2518 MHz
2000 MHz
Memory
Memory Size
8GB
8GB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
256bit
Bandwidth
322.3GB/s
256.0GB/s
Render Config
SM Count
80
—
Compute Units
32
36
Shading Units
2048
2304
TMUs
128
144
ROPs
64
32
Tensor Cores
320
—
RT Cores
32
—
L1 Cache
128 KB (per SM)
16 KB (per CU)
L2 Cache
4 MB
2 MB
L3 Cache
32 MB
—
Theoretical Performance
Pixel Rate
200.3 GPixel/s
34.46 GPixel/s
Texture Rate
400.6 GTexel/s
155.1 GTexel/s
FP16 (half)
51.28 TFLOPS
4.963 TFLOPS
FP32 (float)
25.64 TFLOPS
4.963 TFLOPS
FP64 (double)
801.3 GFLOPS
310.2 GFLOPS
Graphics Processor
GPU Name
Navi 44
Polaris 20
GPU Variant
Navi 44 XT(215-176400102)
Polaris 20M XT
Architecture
RDNA 4.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
4 nm
14 nm
Transistors
29.7 billion
5.7 billion
Die Size
199 mm²
232 mm²
Board Design
TDP
150W
100W
Suggested PSU
450 W
—
Outputs
1x HDMI 2.1b2x DisplayPort 2.1a
No outputs
Power Connectors
1x 8-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.2
2.1
Vulkan
1.3
1.2
CUDA
8.6
—
Shader Model
6.8
6.4
Benchmark
Blender
5,956
—
3DMark Time Spy
—
3,553
3DMark Time Spy Extreme
—
1,626
▲ Specs Compare
Data sourced from official specifications and benchmark tests.