NVIDIA GeForce RTX 5080 Mobile vs AMD Radeon RX 6950 XT
GPU · Specs Compare
Graphics Card
Release Date
Apr 2025
May 2022
Generation
GeForce 50 Mobile
Navi II
Type
Mobile
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
975 MHz
1860 MHz
Boost Clock
1500 MHz
2310 MHz
Memory Clock
1750 MHz
2250 MHz
Memory
Memory Size
16GB
16GB
Memory Type
GDDR7
GDDR6
Memory Bus
256bit
256bit
Bandwidth
896.0GB/s
576.0GB/s
Render Config
SM Count
60
—
Shading Units
7680
5120
TMUs
240
320
ROPs
96
128
Tensor Cores
240
—
RT Cores
60
80
L1 Cache
128 KB (per SM)
128 KB per Array
L2 Cache
64 MB
4 MB
Compute Units
—
80
L3 Cache
—
128 MB
Theoretical Performance
Pixel Rate
144.0 GPixel/s
295.7 GPixel/s
Texture Rate
360.0 GTexel/s
739.2 GTexel/s
FP16 (half)
23.04 TFLOPS
47.31 TFLOPS
FP32 (float)
23.04 TFLOPS
23.65 TFLOPS
FP64 (double)
360.0 GFLOPS
1478 GFLOPS
Graphics Processor
GPU Name
GB203
Navi 21
Architecture
Blackwell 2.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
7 nm
Transistors
45.6 billion
26.8 billion
Die Size
378 mm²
520 mm²
GPU Variant
—
Navi 21 KXTX(215-121000289)
Board Design
TDP
80W
335W
Suggested PSU
550 W
700 W
Outputs
Portable Device Dependent
1x HDMI 2.12x DisplayPort 1.4a
Power Connectors
None
2x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
2.1
Vulkan
1.4
1.3
CUDA
12.0
—
Shader Model
6.8
6.5
▲ Specs Compare
Data sourced from official specifications and benchmark tests.