← Retour au blog
tech 2 August 2026

Optimizing Kimi K3 on MI355X: Better Performance per Dollar Than the B300

Discover how leveraging AMD's MI355X processor for the Kimi K3 model offers an unparalleled performance-to-cost ratio compared to traditional solutions like the B300.

Article inspired by the original source
Running Kimi K3 on MI355X at Better Performance per Dollar Than B300 ↗ www.wafer.ai

Introduction

In the realm of artificial intelligence, cost-effective solutions are crucial for staying competitive. The Kimi K3, with its 2.8T parameters, represents a major leap in open-source models. But how to efficiently run such a model? This is where AMD's MI355X processor comes into play, offering a performance and economic alternative compared to Blackwell's B300.

A Next-Generation Model

Kimi K3 is not just any AI model. With 2.8T parameters, it surpasses predecessors like GLM5.2 and DeepSeek V4-Pro. However, its size presents a major challenge: it requires over 1.5TB of video memory to run efficiently, exceeding the capacity of a single B200 node.

Why the AMD MI355X?

AMD's MI355X offers 288GB of VRAM per GPU, a feature shared with the B300 but at a significantly lower cost. On average, each MI355X GPU is about 2.4 times cheaper than a B300. This impressive saving is crucial for companies looking to maximize ROI.

Impressive Performance

In terms of performance, the MI355X does not disappoint. During a benchmark with a 1,024-token input and a 400-token output, the MI355X reached 952 tokens per second per node, far outperforming the B200. Although the B300 has a higher aggregate throughput, the cost per performance makes the MI355X much more attractive.

Economic Impact

With a cost of $2.50 per GPU hour for the MI355X, compared to $6.00 for the B300 and $4.25 for the B200, the economic impact is clear. The MI355X offers 48 tokens per second per dollar, against only 33 for the B300.

Conclusion

For tech companies looking to optimize costs while staying at the forefront of technology, choosing the MI355X for the Kimi K3 model is a no-brainer. Its ability to deliver superior performance at a reduced cost makes it a top choice among current solutions.

Let's discuss your project in 15 minutes.

Kimi K3 MI355X B300 Performance Cost-efficiency
Deepthix newsletter · 100% AI · every Monday 8am

An AI agent reads tech for you.

Our AI agent scans ~200 sources per week and ships the best articles to your inbox Monday 8am. Free. One click to unsubscribe.

Visit the newsletter page →

Want to automate your operations?

Let's talk about your project in 15 minutes.

Book a call