NVIDIA B300 vs NVIDIA GeForce RTX 6080
GPU Specs Compare
Graphics Card
Release Date
Sep 2025
Jan 2027
Generation
Server Blackwell
GeForce 60
Type
Desktop
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
1665 MHz
2300 MHz
Boost Clock
2032 MHz
2800 MHz
Memory Clock
2000 MHz
1875 MHz
Memory
Memory Size
144GB
20GB
Memory Type
HBM3e
GDDR7
Memory Bus
4096bit
320bit
Bandwidth
4.10TB/s
1.20TB/s
Render Config
SM Count
148
84
Shading Units
18944
10752
TMUs
592
336
ROPs
24
112
Tensor Cores
592
336
L1 Cache
256 KB (per SM)
128 KB (per SM)
L2 Cache
50 MB
64 MB
RT Cores
-
84
Theoretical Performance
Pixel Rate
48.77 GPixel/s
313.6 GPixel/s
Texture Rate
1202.9 GTexel/s
940.8 GTexel/s
FP16 (half)
1231.8 TFLOPS
60.21 TFLOPS
FP32 (float)
76.99 TFLOPS
60.21 TFLOPS
FP64 (double)
1202.9 GFLOPS
940.8 GFLOPS
Graphics Processor
GPU Name
GB110
GR203
Architecture
Blackwell Ultra
Rubin
Foundry
TSMC
TSMC
Process Size
5 nm
3 nm
Transistors
104 billion
Unknown
Die Size
Unknown
Unknown
GPU Variant
-
GR203-400-A1
Board Design
TDP
1400W
350W
Suggested PSU
1800 W
750 W
Outputs
No outputs
1x HDMI 2.1b3x DisplayPort 2.1b
Power Connectors
-
1x 16-pin
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
3.0
Vulkan
N/A
1.4
CUDA
10.3
12.0
Shader Model
N/A
6.9