AMD Radeon Instinct MI355X vs PowerColor R9 280X

Comparison of AMD Radeon Instinct MI355X with 288 GB HBM3e and 16,384 cores vs PowerColor R9 280X with 3 GB GDDR5 and 2,048 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

PowerColor R9 280X

PowerColor R9 280X

Contents:

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

Memory

Memory Size

288 GB 3 GB

Memory Type

HBM3e GDDR5

Memory Bandwidth

8.19 TB/s 288.0 GB/s

Memory Bus Width

8,192 бит 384 бит

ML Performance

FP16 (Half Precision)

629.1 TFLOPS No

BF16 (Brain Float)

No No

TF32 (TensorFloat)

No No

Compute Power

FP32 (Single Precision)

78.64 TFLOPS 4.096 TFLOPS

FP64 (Double Precision)

78.64 TFLOPS 1.024 TFLOPS

CUDA Cores

16,384 2,048

RT Cores

No No

Architecture & Compatibility

GPU Architecture

CDNA 4.0 GCN 1.0

SM (Streaming Multiprocessor)

No No

PCIe Version

PCIe 5.0 x16 PCIe 3.0 x16

ML Software Support

CUDA Version

No No

Clocks & Performance

Base Clock

1,000 850

Boost Clock

2,400 1,000

Memory Clock

2,000 1,500

Power Consumption

TDP/TGP

1400 W
🔥 -82% 250 W

Recommended PSU

1800 W
🔥 -67% 600 W

Power Connector

None 1x 6-pin + 1x 8-pin

Rendering

Texture Units (TMU)

1,024 128

ROP

No No

L2 Cache

32 MB 768 KB

Benchmarks

MLPerf, llama2-70b-99.9 (mxfp4)

10 129 tokens/s

MLPerf, llama3.1-405b (mxfp4)

252.4 tokens/s

Additional

Slots

OAM Module Dual-slot

Release Date

March 12, 2025 Oct. 8, 2013

Display Outputs

No outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2

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