AMD Radeon Graphics 448SP vs NVIDIA B300 SXM6 AC
GPU · Specs Compare
Graphics Card
Release Date
Jan 2021
Sep 2025
Generation
Lucienne
Server Blackwell
Type
Integrated
Desktop
Bus Interface
IGP
PCIe 6.0 x16
Clock Speeds
Base Clock
300 MHz
1665 MHz
Boost Clock
1800 MHz
2032 MHz
Memory Clock
System Shared
2000 MHz
Memory
Memory Size
System Shared
288GB
Memory Type
System Shared
HBM3e
Memory Bus
System Shared
8192bit
Bandwidth
System Dependent
8.19TB/s
Render Config
Compute Units
7
—
Shading Units
448
18944
TMUs
32
592
ROPs
8
24
SM Count
—
148
Tensor Cores
—
592
L1 Cache
—
256 KB (per SM)
L2 Cache
—
126 MB
Theoretical Performance
Pixel Rate
14.40 GPixel/s
48.77 GPixel/s
Texture Rate
57.60 GTexel/s
1202.9 GTexel/s
FP16 (half)
3.226 TFLOPS
76.99 TFLOPS
FP32 (float)
1.613 TFLOPS
76.99 TFLOPS
FP64 (double)
100.8 GFLOPS
1202.9 GFLOPS
Graphics Processor
GPU Name
Lucienne
GB110
Architecture
GCN 5.1
Blackwell Ultra
Foundry
TSMC
TSMC
Process Size
7 nm
5 nm
Transistors
9.8 billion
208 billion
Die Size
156 mm²
1628 mm²
Board Design
TDP
25W
1100W
Outputs
No outputs
No outputs
Power Connectors
None
—
Suggested PSU
—
1500 W
Graphics Features
DirectX
12 (12_1)
N/A
OpenGL
4.6
N/A
OpenCL
2.1
3.0
Vulkan
1.2
N/A
Shader Model
6.4
N/A
CUDA
—
10.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.