AMD Radeon Instinct MI355X vs Galaxy GT 640 GC

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

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Performance Rating

AMD Radeon Instinct MI355X outperforms Galaxy GT 640 GC by 191.07% in the overall GPU ARK performance rating

A100 A100
H200 H200
MI325X MI325X

AMD Radeon Instinct MI355X

93.5

AMD Radeon Instinct MI355X

93.5
RX 7900 XTX RX 7900 XTX
MI250 MI250
Instinct MI300X Instinct MI300X

Galaxy GT 640 GC

32.1

Galaxy GT 640 GC

32.1

Contents:

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

Memory

Memory Size

🔥 +14,300% 288 ГБ
2 ГБ

Memory Type

HBM3e DDR3

Memory Bandwidth

🔥 8.19 TB/s
28.51 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
729.6 TFLOPS

FP64 (Double Precision)

🔥 +258,584% 78.64 TFLOPS
0.0304 TFLOPS

CUDA Cores

🔥 +4,167% 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

🔥 +124% 2,000
891

Power Consumption

TDP/TGP

1400 W
🔥 -95% 65 W

Recommended PSU

1800 W
🔥 -86% 250 W

Power Connector

None None

Rendering

Texture Units (TMU)

🔥 +3,100% 1,024
32

ROP

No No

L2 Cache

🔥 16 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

July 15, 2025 June 5, 2012

Display Outputs

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

1x DVI
1x HDMI 1.4a
1x VGA

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