MI355X vs TITAN Xp

CDNA 4vsPascalUpdated 35 days ago

The MI355X dominates for modern AI workloads: its 2300 TFLOPS FP16/FP32 and 288 GB VRAM crush the TITAN Xp's 12.1 TFLOPS and 12 GB, enabling efficient training and inference of large models. Legacy users may tolerate TITAN Xp, but contemporary use cases demand MI355X superiority.

Specifications Compared

SpecMI355XTITAN-XP
TDP750W250W
VRAM288 GB12 GB
Memory TypeHBM3eGDDR5X
ArchitectureCDNA 4Pascal
Form FactorsOAMPCIe
InterconnectInfinity Fabric
FP8 Performance4,600 TFLOPS
FP16 Performance2,300 TFLOPS12.1 TFLOPS
FP32 Performance2300 TFLOPS12.1 TFLOPS
FP64 Performance72 TFLOPS
INT8 Performance4,600 TOPS
Memory Bandwidth8,000 GB/s548 GB/s

Performance Analysis

Peak FP16 performance reaches 2300 TFLOPS on the MI355X, versus 12.1 TFLOPS on the TITAN Xp, enabling the former to train models roughly 190 times faster in half-precision tasks. FP32 matches at 2300 TFLOPS for MI355X and 12.1 TFLOPS for TITAN Xp, benefiting scientific simulations similarly. Equal FP16 and FP32 ratios on both suggest balanced tensor core utilization, but the MI355X's scale transforms training throughput for deep learning.

Memory bandwidth of 8000 GB/s on the MI355X supports massive batch sizes, such as processing datasets that exceed the TITAN Xp's 548 GB/s limit, reducing epochs needed for convergence. The 288 GB VRAM capacity handles models like large language models without splitting, unlike the 12 GB constraint forcing quantization or multi-GPU setups on TITAN Xp. For inference, MI355X FP8 at 4600 TFLOPS accelerates low-precision serving, unavailable on TITAN Xp.

Power draw contrasts sharply: 750W TDP for MI355X demands robust cooling, while 250W suits efficient legacy inference. Infinity Fabric interconnect on MI355X enables multi-GPU scaling, absent on TITAN Xp.

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When to Choose the MI355X

The MI355X excels in datacenter-scale AI training and inference requiring 288 GB HBM3e VRAM and 8000 GB/s bandwidth. Users handling large language models or scientific computing with datasets exceeding 12 GB benefit from its 2300 TFLOPS FP16/FP32 performance. OAM form factor and Infinity Fabric suit high-density server deployments.

When to Choose the TITAN Xp

The TITAN Xp fits legacy desktop setups or low-budget experiments with small models under 12 GB VRAM. Its 250W TDP and PCIe form factor enable easy integration into older workstations without high power infrastructure. Compatibility with Pascal-era software makes it viable for maintaining outdated pipelines at 12.1 TFLOPS FP16/FP32.

Use Cases

LLM Training
MI355X

MI355X's 288 GB VRAM and 2300 TFLOPS FP16 handle massive parameter counts without multi-GPU complexity. TITAN Xp's 12 GB limits it to tiny models.

LLM Inference
MI355X

4600 TFLOPS FP8 and 8000 GB/s bandwidth on MI355X support high-throughput serving. TITAN Xp lacks FP8 and struggles with 548 GB/s.

Fine-tuning
MI355X

2300 TFLOPS FP32 on MI355X accelerates parameter-efficient tuning on large datasets. 12 GB VRAM on TITAN Xp requires heavy quantization.

Stable Diffusion
MI355X

MI355X's 288 GB VRAM fits full-resolution generation pipelines at 2300 TFLOPS FP16. TITAN Xp caps at low-res with 12.1 TFLOPS.

Scientific Computing
MI355X

High FP32 at 2300 TFLOPS and Infinity Fabric scaling suit simulations on MI355X. TITAN Xp's 12.1 TFLOPS limits complex computations.

Frequently Asked Questions

Which GPU has more VRAM?

The MI355X provides 288 GB HBM3e VRAM. TITAN Xp offers 12 GB GDDR5X. This gap allows MI355X to load models 24 times larger.

What is the FP16 performance difference?

MI355X achieves 2300 TFLOPS in FP16. TITAN Xp reaches 12.1 TFLOPS. MI355X outperforms by a factor of about 190.

How do memory bandwidths compare?

MI355X delivers 8000 GB/s bandwidth. TITAN Xp has 548 GB/s. Higher bandwidth on MI355X supports larger batch sizes.

What are the TDPs?

MI355X requires 750W TDP. TITAN Xp uses 250W. TITAN Xp suits lower-power environments.

Which is newer?

MI355X uses 2025 CDNA 4 architecture. TITAN Xp employs 2017 Pascal. MI355X incorporates eight years of advancements.

Does TITAN Xp support FP8?

TITAN Xp lacks FP8 capability. MI355X provides 4600 TFLOPS FP8 for inference. This makes MI355X superior for quantized tasks.

Which is cheaper to rent, the MI355X or the TITAN Xp?

Cloud rental prices for both the MI355X and TITAN Xp vary by provider, configuration, and availability. This page shows live pricing from 25+ providers updated every 60 seconds. Scroll to the Live Cloud Pricing section to compare current rates.

How much VRAM does the MI355X have compared to the TITAN Xp?

The MI355X has 288 GB of HBM3e memory. The TITAN Xp has 12 GB of GDDR5X memory.

Can I find MI355X and TITAN Xp GPUs available to rent right now?

Yes. This page shows real-time availability across 25+ cloud GPU providers. The Live Cloud Pricing section displays only in-stock offers with current pricing.

What is the main difference between the MI355X and the TITAN Xp?

The MI355X uses the CDNA 4 architecture (2025) while the TITAN Xp uses Pascal (2017). The MI355X delivers 190.1x the FP16 throughput and 14.6x the memory bandwidth of the TITAN Xp.