AMD Radeon Instinct MI355X vs GIGABYTE GT 640 OC

Comparison of AMD Radeon Instinct MI355X with 288 GB HBM3e and 16,384 cores vs GIGABYTE GT 640 OC with 2 GB DDR3 and 384 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

GIGABYTE GT 640 OC

GIGABYTE GT 640 OC

Contents:

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

Memory

Memory Size

288 GB 2 GB

Memory Type

HBM3e DDR3

Memory Bandwidth

8.19 TB/s 28.80 GB/s

Memory Bus Width

8,192 бит 128 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 0.8033 TFLOPS

FP64 (Double Precision)

78.64 TFLOPS 0.0335 TFLOPS

CUDA Cores

16,384 384

RT Cores

No No

Architecture & Compatibility

GPU Architecture

CDNA 4.0 Kepler

SM (Streaming Multiprocessor)

No No

PCIe Version

PCIe 5.0 x16 PCIe 3.0 x16

ML Software Support

CUDA Version

No 3.0

Clocks & Performance

Base Clock

1,000 No

Boost Clock

2,400 No

Memory Clock

2,000 900

Power Consumption

TDP/TGP

1400 W
🔥 -95% 65 W

Recommended PSU

1800 W
🔥 -86% 250 W

Power Connector

None None

Rendering

Texture Units (TMU)

1,024 32

ROP

No No

L2 Cache

32 MB 256 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 June 5, 2012

Display Outputs

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

2x DVI
1x HDMI 1.4a
1x VGA

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