AMD Instinct MI300X vs AMD Instinct MI300A

VS

We compared two Professional market GPUs: 192GB VRAM AMD Instinct MI300X and 128GB VRAM AMD Instinct MI300A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Instinct MI300X 's Advantages

More VRAM (192GB vs 128GB)

4864 additional rendering cores

Lower TDP (750W vs 760W)

Score

Benchmark

FP32 (float)

AMD Instinct MI300X +33%

163.4 TFLOPS

AMD Instinct MI300A

122.6 TFLOPS

AMD Instinct MI300X

VS

AMD Instinct MI300A

Graphics Card

Dec 2023

Release Date

Dec 2023

Instinct

Generation

Instinct

Professional

Type

Professional

PCIe 5.0 x16

Bus Interface

PCIe 5.0 x16

Clock Speeds

1000 MHz

Base Clock

1000 MHz

2100 MHz

Boost Clock

2100 MHz

5200 MHz

Memory Clock

5200 MHz

Memory

192GB

Memory Size

128GB

HBM3

Memory Type

HBM3

8192bit

Memory Bus

8192bit

5300GB/s

Bandwidth

5300GB/s

Render Config

-

SM Count

-

304

Compute Units

228

19456

Shading Units

14592

880

TMUs

880

0

ROPs

0

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

16 MB

L2 Cache

16 MB

Theoretical Performance

0 MPixel/s

Pixel Rate

0 MPixel/s

1496 GTexel/s

Texture Rate

1496 GTexel/s

1300 TFLOPS

FP16 (half)

980.6 TFLOPS

163.4 TFLOPS

FP32 (float)

122.6 TFLOPS

81.7 TFLOPS

FP64 (double)

61.3 TFLOPS

Graphics Processor

MI300

GPU Name

MI300

-

GPU Variant

-

CDNA 3.0

Architecture

CDNA 3.0

TSMC

Foundry

TSMC

5 nm

Process Size

5 nm

146 billion

Transistors

146 billion

1017 mm²

Die Size

1017 mm²

Board Design

750W

TDP

760W

1000 W

Suggested PSU

1000 W

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Features

N/A

DirectX

N/A

OpenGL

N/A

3.0

OpenCL

3.0

N/A

Vulkan

N/A

-

CUDA

-

N/A

Shader Model

N/A

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