AMD Radeon Instinct MI355X vs MSI RTX 5090 LIGHTNING X

Comparison of AMD Radeon Instinct MI355X with 288 GB HBM3e and 16,384 cores vs MSI RTX 5090 LIGHTNING X with 32 GB GDDR7 and 21,760 cores.

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Performance Rating

H200 H200
MI325X MI325X
A100 A100

AMD Radeon Instinct MI355X

AMD Radeon Instinct MI355X

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

MSI RTX 5090 LIGHTNING X

MSI RTX 5090 LIGHTNING X

Contents:

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

Memory

Memory Size

288 GB 32 GB

Memory Type

HBM3e GDDR7

Memory Bandwidth

8.19 TB/s 1.79 TB/s

Memory Bus Width

8,192 бит 512 бит

ML Performance

FP16 (Half Precision)

629.1 TFLOPS 111.6 TFLOPS

BF16 (Brain Float)

No No

TF32 (TensorFloat)

No No

Compute Power

FP32 (Single Precision)

78.64 TFLOPS 111.6 TFLOPS

FP64 (Double Precision)

78.64 TFLOPS 1.744 TFLOPS

CUDA Cores

16,384 21,760

RT Cores

No 170

Architecture & Compatibility

GPU Architecture

CDNA 4.0 Blackwell 2.0

SM (Streaming Multiprocessor)

No 170

PCIe Version

PCIe 5.0 x16 PCIe 5.0 x16

ML Software Support

CUDA Version

No 12.0

Clocks & Performance

Base Clock

1,000 2,017

Boost Clock

2,400 2,565

Memory Clock

2,000 1,750

Power Consumption

TDP/TGP

1400 W
🔥 -29% 1000 W

Recommended PSU

1800 W
🔥 -22% 1400 W

Power Connector

None 2x 16-pin

Rendering

Texture Units (TMU)

1,024 680

ROP

No 170

L2 Cache

32 MB 96 MB

Benchmarks

MLPerf, llama2-70b-99.9 (mxfp4)

10 129 tokens/s

MLPerf, llama3.1-405b (mxfp4)

252.4 tokens/s

Additional

Slots

OAM Module Triple-slot

Release Date

March 12, 2025 Jan. 6, 2026

Display Outputs

No outputs
1x HDMI 2.1b
3x DisplayPort 2.1b

1x HDMI 2.1b
3x DisplayPort 2.1b
1x USB Type-C

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