NVIDIA Rubin GPU vs NVIDIA RTX A4000 Max-Q
GPU Specs Compare
Graphics Card
Release Date
Jan 2026
Apr 2021
Generation
Server Rubin
Ampere-MW
Type
Desktop
Mobile
Bus Interface
PCIe 6.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
700 MHz
780 MHz
Boost Clock
2267 MHz
1395 MHz
Memory Clock
2695 MHz
1375 MHz
Memory
Memory Size
288GB
8GB
Memory Type
HBM4
GDDR6
Memory Bus
16384bit
256bit
Bandwidth
22.1TB/s
352.0GB/s
Render Config
SM Count
224
40
Shading Units
28672
5120
TMUs
896
160
ROPs
24
80
Tensor Cores
896
160
L1 Cache
256 KB (per SM)
128 KB (per SM)
L2 Cache
128 MB
4 MB
RT Cores
-
40
Theoretical Performance
Pixel Rate
54.41 GPixel/s
111.6 GPixel/s
Texture Rate
2031.2 GTexel/s
223.2 GTexel/s
FP16 (half)
260.0 TFLOPS
14.28 TFLOPS
FP32 (float)
130.0 TFLOPS
14.28 TFLOPS
FP64 (double)
32.50 TFLOPS
223.2 GFLOPS
Graphics Processor
GPU Name
GR100
GA104
Architecture
Rubin
Ampere
Foundry
TSMC
Samsung
Process Size
3 nm
8 nm
Transistors
336 billion
17.4 billion
Die Size
1456 mm²
392 mm²
Board Design
TDP
2300W
80W
Suggested PSU
2700 W
-
Outputs
No outputs
Portable Device Dependent
Power Connectors
-
None
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
3.0
Vulkan
N/A
1.3
CUDA
10.7
8.6
Shader Model
N/A
6.8