AMD Instinct MI325X OAM vs AMD Instinct MI300A 128GB

The Instinct MI325X delivers 33% more FP8 throughput than the Instinct MI300A (2,615 vs 1,961 TFLOPS dense). The Instinct MI325X also carries 128 GB more memory (256 GB vs 128 GB).

Instinct MI325X: CDNA 3, 2025 Instinct MI300A: CDNA 3, 2023

FP8 dense lead

+33%

Instinct MI325X: 2,615 vs 1,961 TFLOPS

Memory

256 vs 128 GB

128 GB more for the Instinct MI325X

Bandwidth

6.0 TB/s vs 5.3 TB/s

Instinct MI325X moves data faster

TDP

1.0 kW vs 760 W

Instinct MI300A draws 240 W less

See rental pricing from $3.80/hr Download comparison sheet Printable version →

AMD Instinct MI325X OAM

Leads on FP8 Full specs →

What is the AMD Instinct MI325X?

The Instinct MI325X is a GPU from AMD on the CDNA 3 architecture, an accelerator for AI training, inference and high-performance computing. It is an OAM module, the open accelerator format used in multi-GPU servers. Instinct MI325X full specifications →

Can I rent the Instinct MI325X in the cloud?

Yes. Cloud providers tracked by Flopper rent the Instinct MI325X by the hour, and the pricing page compares their current rates and the price history side by side. Instinct MI325X rental prices →

How does the Instinct MI325X compare with other accelerators?

This page sets the Instinct MI325X against the Instinct MI300A. The Instinct MI325X is the newer generation of the two. Both are AMD parts. The compare tool builds the same comparison for any two parts in the catalogue. All GPU comparisons →

Where do the Instinct MI325X figures come from?

Every Instinct MI325X figure on this page traces to AMD's own datasheet or specification table. How Flopper verifies specifications →

AMD Instinct MI300A 128GB

Full specs →

What is the AMD Instinct MI300A?

The Instinct MI300A is a GPU from AMD on the CDNA 3 architecture, an accelerator for AI training, inference and high-performance computing. Instinct MI300A full specifications →

Can I rent the Instinct MI300A in the cloud?

Flopper is not tracking any live rental listings for the Instinct MI300A yet. The provider directory lists the clouds that rent comparable accelerators on demand. GPU cloud providers →

How does the Instinct MI300A compare with other accelerators?

This page sets the Instinct MI300A against the Instinct MI325X. The Instinct MI300A is the older generation of the two. Both are AMD parts. The compare tool builds the same comparison for any two parts in the catalogue. All GPU comparisons →

Where do the Instinct MI300A figures come from?

Every Instinct MI300A figure on this page traces to AMD's own datasheet or specification table. How Flopper verifies specifications →

Specifications

Instinct MI325X

Instinct MI300A

Architecture

CDNA 3CDNA 3

Launch Year

20252023

Form Factor

OAMAPU SH5 socket

Memory

256 GB128 GB

Memory Bandwidth

6.0 TB/s5.3 TB/s

TDP

1.0 kW760 W

Process Node

5nm FinFET5nm FinFET

Spec

Instinct MI325X

Instinct MI300A

Architecture CDNA 3CDNA 3

Launch Year 20252023

Form Factor OAMAPU SH5 socket

Memory 256 GB128 GB

Memory Bandwidth 6.0 TB/s5.3 TB/s

TDP 1.0 kW760 W

Process Node 5nm FinFET5nm FinFET

Performance (TFLOPS)

Instinct MI325X

Instinct MI300A

82 TFLOPS 61 TFLOPS

163 TFLOPS 123 TFLOPS

654 TFLOPS

1,307 TFLOPS sparse

490 TFLOPS

981 TFLOPS sparse

1,307 TFLOPS

2,615 TFLOPS sparse

981 TFLOPS

1,961 TFLOPS sparse

1,307 TFLOPS

2,615 TFLOPS sparse

981 TFLOPS

1,961 TFLOPS sparse

2,615 TFLOPS

5,230 TFLOPS sparse

1,961 TFLOPS

3,922 TFLOPS sparse

FP6

2,615 TOPS

5,230 TOPS sparse

1,961 TOPS

3,922 TOPS sparse

Precision

Instinct MI325X

Instinct MI300A

82 TFLOPS 61 TFLOPS

163 TFLOPS 123 TFLOPS

654 TFLOPS

1,307 TFLOPS sparse

490 TFLOPS

981 TFLOPS sparse

1,307 TFLOPS

2,615 TFLOPS sparse

981 TFLOPS

1,961 TFLOPS sparse

1,307 TFLOPS

2,615 TFLOPS sparse

981 TFLOPS

1,961 TFLOPS sparse

2,615 TFLOPS

5,230 TFLOPS sparse

1,961 TFLOPS

3,922 TFLOPS sparse

FP6

2,615 TOPS

5,230 TOPS sparse

1,961 TOPS

3,922 TOPS sparse

Figures are dense. Where a vendor publishes a figure it sits under the dense one and never decides a winner. Hover any precision for its definition, or read the GPU glossary.

FLOPS by Precision

What actually differs

The Instinct MI325X is the newer part: CDNA 3 (2025) against the Instinct MI300A's CDNA 3 (2023).

The Instinct MI325X carries 128 GB more memory (256 GB against 128 GB), so larger models fit on one GPU before you shard. Bandwidth is 6.0 TB/s against 5.3 TB/s, which sets the ceiling on decode speed.

Power is 1.0 kW against 760 W, and at FP32 the Instinct MI325X does more work per watt. Weight the FP8 and FP16 rows for LLM work and the FP64 row for HPC.

New to the terms? The glossary explains FP64, FP32, TF32, BF16, FP16, FP8, INT8, Sparsity and TFLOPS.

Frequently asked questions

Is the Instinct MI325X faster than the Instinct MI300A?

At FP8 precision the Instinct MI325X reaches 2,615 TFLOPS dense against 1,961 TFLOPS for the Instinct MI300A. The performance table on this page lists every published precision for both GPUs.

Which should you choose, the Instinct MI325X or the Instinct MI300A?

Choose the Instinct MI325X for training and high-throughput inference: it has 33% more FP8 throughput than the Instinct MI300A. It also carries 128 GB more memory, so larger models fit on one GPU before you shard. The Instinct MI325X draws 240 W more power, so budget for cooling and power delivery before you commit.

Which has more memory, the Instinct MI325X or the Instinct MI300A?

The Instinct MI325X carries 256 GB of memory versus 128 GB for the Instinct MI300A. Memory bandwidth is 6.0 TB/s for the Instinct MI325X and 5.3 TB/s for the Instinct MI300A.

How much power do the Instinct MI325X and the Instinct MI300A draw?

The Instinct MI325X is rated at 1.0 kW TDP and the Instinct MI300A at 760 W. On FP32 throughput per watt, the Instinct MI325X is the more efficient part.

How much do the Instinct MI325X and the Instinct MI300A cost to rent?

Live cloud listings tracked by Flopper price the Instinct MI325X from $3.80 per GPU-hour across 1 provider, and no live listings yet for the Instinct MI300A. The rental section on this page links to every provider, rate and the price history for each GPU.

Where to Rent

AMD Instinct MI325X OAM

Rent from

$3.80 / GPU-hr

Lowest of 2 live listings across 1 provider

See all Instinct MI325X rental prices →

Price history and every provider on the pricing page. Some links are affiliate links.

AMD Instinct MI300A 128GB

No live rental listings tracked for the Instinct MI300A yet.

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Open in Full Compare Tool → Instinct MI325X full specs Instinct MI300A full specs Estimate cluster cost in the calculator →

AMD Instinct MI325X OAM vs AMD Instinct MI300A 128GB

AMD Instinct MI325X OAM

What is the AMD Instinct MI325X?

Can I rent the Instinct MI325X in the cloud?

How does the Instinct MI325X compare with other accelerators?

Where do the Instinct MI325X figures come from?

AMD Instinct MI300A 128GB

What is the AMD Instinct MI300A?

Can I rent the Instinct MI300A in the cloud?

How does the Instinct MI300A compare with other accelerators?

Where do the Instinct MI300A figures come from?

Specifications

Performance (TFLOPS)

FLOPS by Precision

What actually differs

Frequently asked questions

Is the Instinct MI325X faster than the Instinct MI300A?

Which should you choose, the Instinct MI325X or the Instinct MI300A?

Which has more memory, the Instinct MI325X or the Instinct MI300A?

How much power do the Instinct MI325X and the Instinct MI300A draw?

How much do the Instinct MI325X and the Instinct MI300A cost to rent?

Where to Rent

AMD Instinct MI325X OAM

AMD Instinct MI300A 128GB

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