NVIDIA B300 SXM6 AC vs AMD Radeon RX 6450M
GPU Specs Compare
Graphics Card
Release Date
Sep 2025
Jan 2023
Generation
Server Blackwell
Navi Mobile
Type
Desktop
Mobile
Bus Interface
PCIe 6.0 x16
PCIe 4.0 x4
Clock Speeds
Base Clock
1665 MHz
2000 MHz
Boost Clock
2032 MHz
2460 MHz
Memory Clock
2000 MHz
2000 MHz
Memory
Memory Size
288GB
4GB
Memory Type
HBM3e
GDDR6
Memory Bus
8192bit
64bit
Bandwidth
8.19TB/s
128.0GB/s
Render Config
SM Count
148
-
Shading Units
18944
768
TMUs
592
48
ROPs
24
32
Tensor Cores
592
-
L1 Cache
256 KB (per SM)
128 KB per Array
L2 Cache
126 MB
1024 KB
Compute Units
-
12
RT Cores
-
12
L3 Cache
-
16 MB
Theoretical Performance
Pixel Rate
48.77 GPixel/s
78.72 GPixel/s
Texture Rate
1202.9 GTexel/s
118.1 GTexel/s
FP16 (half)
76.99 TFLOPS
7.557 TFLOPS
FP32 (float)
76.99 TFLOPS
3.779 TFLOPS
FP64 (double)
1202.9 GFLOPS
236.2 GFLOPS
Graphics Processor
GPU Name
GB110
Navi 24
Architecture
Blackwell Ultra
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
6 nm
Transistors
208 billion
5.4 billion
Die Size
1628 mm²
107 mm²
GPU Variant
-
Navi 24 XML
Board Design
TDP
1100W
50W
Suggested PSU
1500 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
2.2
Vulkan
N/A
1.3
CUDA
10.3
-
Shader Model
N/A
6.7