NVIDIA Rubin GPU vs AMD Radeon RX 6950 XT
GPU · Specs Compare
Graphics Card
Release Date
Jan 2026
May 2022
Generation
Server Rubin
Navi II
Type
Desktop
Desktop
Bus Interface
PCIe 6.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
700 MHz
1860 MHz
Boost Clock
2267 MHz
2310 MHz
Memory Clock
2695 MHz
2250 MHz
Memory
Memory Size
288GB
16GB
Memory Type
HBM4
GDDR6
Memory Bus
16384bit
256bit
Bandwidth
22.1TB/s
576.0GB/s
Render Config
SM Count
224
—
Shading Units
28672
5120
TMUs
896
320
ROPs
24
128
Tensor Cores
896
—
L1 Cache
256 KB (per SM)
128 KB per Array
L2 Cache
128 MB
4 MB
Compute Units
—
80
RT Cores
—
80
L3 Cache
—
128 MB
Theoretical Performance
Pixel Rate
54.41 GPixel/s
295.7 GPixel/s
Texture Rate
2031.2 GTexel/s
739.2 GTexel/s
FP16 (half)
260.0 TFLOPS
47.31 TFLOPS
FP32 (float)
130.0 TFLOPS
23.65 TFLOPS
FP64 (double)
32.50 TFLOPS
1478 GFLOPS
Graphics Processor
GPU Name
GR100
Navi 21
Architecture
Rubin
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
3 nm
7 nm
Transistors
336 billion
26.8 billion
Die Size
1456 mm²
520 mm²
GPU Variant
—
Navi 21 KXTX(215-121000289)
Board Design
TDP
2300W
335W
Suggested PSU
2700 W
700 W
Outputs
No outputs
1x HDMI 2.12x DisplayPort 1.4a
Power Connectors
—
2x 8-pin
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
2.1
Vulkan
N/A
1.3
CUDA
10.7
—
Shader Model
N/A
6.5
▲ Specs Compare
Data sourced from official specifications and benchmark tests.