NVIDIA Rubin GPU vs AMD Radeon R9 M395X
GPU · Specs Compare
Graphics Card
Release Date
Jan 2026
May 2015
Generation
Server Rubin
Crystal System
Type
Desktop
Mobile
Bus Interface
PCIe 6.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
700 MHz
—
Boost Clock
2267 MHz
—
Memory Clock
2695 MHz
1250 MHz
Memory
Memory Size
288GB
8GB
Memory Type
HBM4
GDDR5
Memory Bus
16384bit
256bit
Bandwidth
22.1TB/s
160.0GB/s
Render Config
SM Count
224
—
Shading Units
28672
2048
TMUs
896
128
ROPs
24
32
Tensor Cores
896
—
L1 Cache
256 KB (per SM)
16 KB (per CU)
L2 Cache
128 MB
512 KB
Compute Units
—
32
Theoretical Performance
Pixel Rate
54.41 GPixel/s
23.14 GPixel/s
Texture Rate
2031.2 GTexel/s
92.54 GTexel/s
FP16 (half)
260.0 TFLOPS
2.961 TFLOPS
FP32 (float)
130.0 TFLOPS
2.961 TFLOPS
FP64 (double)
32.50 TFLOPS
185.1 GFLOPS
Graphics Processor
GPU Name
GR100
Amethyst
Architecture
Rubin
GCN 3.0
Foundry
TSMC
TSMC
Process Size
3 nm
28 nm
Transistors
336 billion
5 billion
Die Size
1456 mm²
366 mm²
GPU Variant
—
Amethyst XT
Board Design
TDP
2300W
75W
Suggested PSU
2700 W
—
Outputs
No outputs
No outputs
Power Connectors
—
None
Graphics Features
DirectX
N/A
12 (12_0)
OpenGL
N/A
4.6
OpenCL
3.0
2.0
Vulkan
N/A
1.2
CUDA
10.7
—
Shader Model
N/A
6.3
Benchmark
3DMark Time Spy
—
2,514
▲ Specs Compare
Data sourced from official specifications and benchmark tests.