AMD Radeon RX 6900 XT vs NVIDIA GeForce RTX 5090 Mobile
GPU · Specs Compare
Graphics Card
Release Date
Oct 2020
Mar 2025
Generation
Navi II
GeForce 50 Mobile
Type
Desktop
Mobile
Bus Interface
PCIe 4.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
1825 MHz
990 MHz
Boost Clock
2250 MHz
1515 MHz
Memory Clock
2000 MHz
1750 MHz
Memory
Memory Size
16GB
24GB
Memory Type
GDDR6
GDDR7
Memory Bus
256bit
256bit
Bandwidth
512.0GB/s
896.0GB/s
Render Config
Compute Units
80
—
Shading Units
5120
10496
TMUs
320
328
ROPs
128
112
RT Cores
80
82
L1 Cache
128 KB per Array
128 KB (per SM)
L2 Cache
4 MB
64 MB
L3 Cache
128 MB
—
SM Count
—
82
Tensor Cores
—
328
Theoretical Performance
Pixel Rate
288.0 GPixel/s
169.7 GPixel/s
Texture Rate
720.0 GTexel/s
496.9 GTexel/s
FP16 (half)
46.08 TFLOPS
31.80 TFLOPS
FP32 (float)
23.04 TFLOPS
31.80 TFLOPS
FP64 (double)
1440.0 GFLOPS
496.9 GFLOPS
Graphics Processor
GPU Name
Navi 21
GB203
GPU Variant
Navi 21 XTX(215-121000167)
GN22-X11-A1
Architecture
RDNA 2.0
Blackwell 2.0
Foundry
TSMC
TSMC
Process Size
7 nm
5 nm
Transistors
26.8 billion
45.6 billion
Die Size
520 mm²
378 mm²
Board Design
TDP
300W
95W
Suggested PSU
700 W
550 W
Outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
Portable Device Dependent
Power Connectors
2x 8-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.1
3.0
Vulkan
1.4
1.4
Shader Model
6.8
6.8
CUDA
—
12.0
Benchmark
3DMark Time Spy
20,764
—
Blender
—
8,089
▲ Specs Compare
Data sourced from official specifications and benchmark tests.