NVIDIA GeForce RTX 4090 Max-Q vs AMD Radeon RX 6650 XT
GPU · Specs Compare
Graphics Card
Release Date
Jan 2023
May 2022
Generation
GeForce 40 Mobile
Navi II
Type
Mobile
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 4.0 x8
Clock Speeds
Base Clock
930 MHz
2055 MHz
Boost Clock
1455 MHz
2635 MHz
Memory Clock
1750 MHz
2190 MHz
Memory
Memory Size
16GB
8GB
Memory Type
GDDR6
GDDR6
Memory Bus
256bit
128bit
Bandwidth
448.0GB/s
280.3GB/s
Render Config
SM Count
76
—
Shading Units
9728
2048
TMUs
304
128
ROPs
112
64
Tensor Cores
304
—
RT Cores
76
32
L1 Cache
128 KB (per SM)
128 KB per Array
L2 Cache
64 MB
2 MB
Compute Units
—
32
L3 Cache
—
32 MB
Theoretical Performance
Pixel Rate
163.0 GPixel/s
168.6 GPixel/s
Texture Rate
442.3 GTexel/s
337.3 GTexel/s
FP16 (half)
28.31 TFLOPS
21.59 TFLOPS
FP32 (float)
28.31 TFLOPS
10.79 TFLOPS
FP64 (double)
442.3 GFLOPS
674.6 GFLOPS
Graphics Processor
GPU Name
AD103
Navi 23
GPU Variant
GN21-X11
Navi 23 KXT(215-130000136)
Architecture
Ada Lovelace
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
4 nm
7 nm
Transistors
45.9 billion
11.06 billion
Die Size
379 mm²
237 mm²
Board Design
TDP
80W
176W
Outputs
Portable Device Dependent
1x HDMI 2.13x DisplayPort 1.4a
Power Connectors
None
1x 8-pin
Suggested PSU
—
450 W
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
2.1
Vulkan
1.3
1.3
CUDA
8.9
—
Shader Model
6.7
6.5
▲ Specs Compare
Data sourced from official specifications and benchmark tests.