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