NVIDIA B300 vs AMD Steam Deck OLED GPU
GPU Specs Compare
Graphics Card
Release Date
Sep 2025
Nov 2023
Generation
Server Blackwell
Console GPU
Type
Desktop
Game console
Bus Interface
PCIe 5.0 x16
-
Clock Speeds
Base Clock
1665 MHz
1000 MHz
Boost Clock
2032 MHz
1600 MHz
Memory Clock
2000 MHz
1375 MHz
Memory
Memory Size
144GB
16GB
Memory Type
HBM3e
LPDDR5
Memory Bus
4096bit
128bit
Bandwidth
4.10TB/s
88.00GB/s
Render Config
SM Count
148
-
Shading Units
18944
512
TMUs
592
32
ROPs
24
16
Tensor Cores
592
-
L1 Cache
256 KB (per SM)
128 KB per Array
L2 Cache
50 MB
1024 KB
Compute Units
-
8
RT Cores
-
8
L3 Cache
-
8 MB
Theoretical Performance
Pixel Rate
48.77 GPixel/s
25.60 GPixel/s
Texture Rate
1202.9 GTexel/s
51.20 GTexel/s
FP16 (half)
1231.8 TFLOPS
3.277 TFLOPS
FP32 (float)
76.99 TFLOPS
1.638 TFLOPS
FP64 (double)
1202.9 GFLOPS
102.4 GFLOPS
Graphics Processor
GPU Name
GB110
Sephiroth
Architecture
Blackwell Ultra
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
6 nm
Transistors
104 billion
2.4 billion
Die Size
Unknown
131 mm²
Board Design
TDP
1400W
15W
Suggested PSU
1800 W
-
Outputs
No outputs
1x USB Type-C
Graphics Features
DirectX
N/A
12 (12_1)
OpenGL
N/A
4.6
OpenCL
3.0
2.0
Vulkan
N/A
1.2
CUDA
10.3
-
Shader Model
N/A
6.5