NVIDIA GeForce RTX 5090 Mobile vs AMD Radeon RX 6800 3456SP
GPU · Specs Compare
Graphics Card
Release Date
Mar 2025
Unknown
Generation
GeForce 50 Mobile
Navi II
Type
Mobile
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
990 MHz
1700 MHz
Boost Clock
1515 MHz
2250 MHz
Memory Clock
1750 MHz
2000 MHz
Memory
Memory Size
24GB
16GB
Memory Type
GDDR7
GDDR6
Memory Bus
256bit
256bit
Bandwidth
896.0GB/s
512.0GB/s
Render Config
SM Count
82
—
Shading Units
10496
3456
TMUs
328
216
ROPs
112
96
Tensor Cores
328
—
RT Cores
82
54
L1 Cache
128 KB (per SM)
128 KB per Array
L2 Cache
64 MB
4 MB
Compute Units
—
54
L3 Cache
—
128 MB
Theoretical Performance
Pixel Rate
169.7 GPixel/s
216.0 GPixel/s
Texture Rate
496.9 GTexel/s
486.0 GTexel/s
FP16 (half)
31.80 TFLOPS
31.10 TFLOPS
FP32 (float)
31.80 TFLOPS
15.55 TFLOPS
FP64 (double)
496.9 GFLOPS
972.0 GFLOPS
Graphics Processor
GPU Name
GB203
Navi 21
GPU Variant
GN22-X11-A1
Navi 21 ES(215-121000066)
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
Board Design
TDP
95W
250W
Suggested PSU
550 W
600 W
Outputs
Portable Device Dependent
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
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
6.8
Benchmark
Blender
8,089
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.