NVIDIA B300 SXM6 AC vs AMD Radeon R9 280
GPU Specs Compare
Graphics Card
Release Date
Sep 2025
Mar 2014
Generation
Server Blackwell
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 6.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1665 MHz
827 MHz
Boost Clock
2032 MHz
933 MHz
Memory Clock
2000 MHz
1250 MHz
Memory
Memory Size
288GB
3GB
Memory Type
HBM3e
GDDR5
Memory Bus
8192bit
384bit
Bandwidth
8.19TB/s
240.0GB/s
Render Config
SM Count
148
-
Shading Units
18944
1792
TMUs
592
112
ROPs
24
32
Tensor Cores
592
-
L1 Cache
256 KB (per SM)
16 KB (per CU)
L2 Cache
126 MB
768 KB
Compute Units
-
28
Theoretical Performance
Pixel Rate
48.77 GPixel/s
29.86 GPixel/s
Texture Rate
1202.9 GTexel/s
104.5 GTexel/s
FP16 (half)
76.99 TFLOPS
-
FP32 (float)
76.99 TFLOPS
3.344 TFLOPS
FP64 (double)
1202.9 GFLOPS
836.0 GFLOPS
Graphics Processor
GPU Name
GB110
Tahiti
Architecture
Blackwell Ultra
GCN 1.0
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
208 billion
4.313 billion
Die Size
1628 mm²
352 mm²
GPU Variant
-
Tahiti PRO3(215-0821330)
Board Design
TDP
1100W
200W
Suggested PSU
1500 W
550 W
Outputs
No outputs
1x DVI2x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
-
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
N/A
12 (11_1)
OpenGL
N/A
4.6
OpenCL
3.0
1.2
Vulkan
N/A
1.2
CUDA
10.3
-
Shader Model
N/A
5.1