AMD Radeon Instinct MI250 vs NVIDIA B300

Comparison of AMD Radeon Instinct MI250 with 128 GB HBM2e and 13,312 cores vs NVIDIA B300 with 144 GB HBM3e and 18,944 cores.

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Performance Rating

NVIDIA B300 outperforms AMD Radeon Instinct MI250 by 41.34% in the overall GPU ARK performance rating

A100 A100
H200 H200
MI325X MI325X

AMD Radeon Instinct MI250

50.9

AMD Radeon Instinct MI250

50.9
RX 7900 XTX RX 7900 XTX
MI250 MI250
Instinct MI300X Instinct MI300X

NVIDIA B300

71.9

NVIDIA B300

71.9

Contents:

Memory ML Performance Compute Power Architecture & Compatibility ML Software Support Clocks & Performance Power Consumption Rendering Benchmarks Additional

Memory

Memory Size

128 GB
🔥 +12% 144 ГБ ×2 (288 ГБ)

Memory Type

HBM2e HBM3e

Memory Bandwidth

3.28 TB/s
🔥 +25% 4.10 TB/s ×2 (8.2 TB/s)

Memory Bus Width

8,192 бит 4,096 бит ×2 (8192 бит)

ML Performance

FP16 (Half Precision)

🔥 +29,296% 362.1 TFLOPS
1.2318 TFLOPS

BF16 (Brain Float)

No No

TF32 (TensorFloat)

No No

Compute Power

FP32 (Single Precision)

45.26 TFLOPS
🔥 +70% 76.99 TFLOPS

FP64 (Double Precision)

🔥 +3,663% 45.26 TFLOPS
1.2029 TFLOPS

CUDA Cores

13,312
🔥 +42% 18,944 ×2 (37888)

RT Cores

No No

Architecture & Compatibility

GPU Architecture

CDNA 2.0 Blackwell Ultra

SM (Streaming Multiprocessor)

No
🔥 148

PCIe Version

PCIe 4.0 x16 PCIe 5.0 x16

ML Software Support

CUDA Version

No 10.3

Clocks & Performance

Base Clock

1,000
🔥 +66% 1,665

Boost Clock

1,700
🔥 +20% 2,032

Memory Clock

1,600
🔥 +25% 2,000

Power Consumption

Recommended PSU

🔥 -50% 900 W
1800 W

Power Connector

2x 8-pin No

TDP/TGP

🔥 -64% 500 W
1400 W

Rendering

Texture Units (TMU)

🔥 +41% 832
592 ×2 (1184)

ROP

No No

L2 Cache

16 MB
🔥 +212% 50 MB

Benchmarks

llama.cpp, llama-2-7b-Q4_0

63.9 tokens/s

Additional

Slots

Dual-slot
🔥 SXM Module

Release Date

Nov. 8, 2021 Sept. 11, 2025

Display Outputs

No outputs
No outputs

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