AMD Radeon R7 265X OEM vs NVIDIA B300 SXM6 AC
GPU Specs Compare
Graphics Card
Release Date
Aug 2014
Sep 2025
Generation
Volcanic Islands
Server Blackwell
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 6.0 x16
Clock Speeds
Base Clock
900 MHz
1665 MHz
Boost Clock
925 MHz
2032 MHz
Memory Clock
1400 MHz
2000 MHz
Memory
Memory Size
2GB
288GB
Memory Type
GDDR5
HBM3e
Memory Bus
256bit
8192bit
Bandwidth
179.2GB/s
8.19TB/s
Render Config
Compute Units
20
-
Shading Units
1280
18944
TMUs
80
592
ROPs
32
24
L1 Cache
16 KB (per CU)
256 KB (per SM)
L2 Cache
512 KB
126 MB
SM Count
-
148
Tensor Cores
-
592
Theoretical Performance
Pixel Rate
29.60 GPixel/s
48.77 GPixel/s
Texture Rate
74.00 GTexel/s
1202.9 GTexel/s
FP32 (float)
2.368 TFLOPS
76.99 TFLOPS
FP64 (double)
148.0 GFLOPS
1202.9 GFLOPS
FP16 (half)
-
76.99 TFLOPS
Graphics Processor
GPU Name
Curacao
GB110
GPU Variant
Curacao PRO(215-0848000)
-
Architecture
GCN 1.0
Blackwell Ultra
Foundry
TSMC
TSMC
Process Size
28 nm
5 nm
Transistors
2.8 billion
208 billion
Die Size
212 mm²
1628 mm²
Board Design
TDP
150W
1100W
Suggested PSU
450 W
1500 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin
-
Graphics Features
DirectX
12 (11_1)
N/A
OpenGL
4.6
N/A
OpenCL
1.2
3.0
Vulkan
1.2
N/A
Shader Model
5.1
N/A
CUDA
-
10.3