A16 vs MI355X

AmperevsCDNA 4Updated 35 days ago

MI355X emerges as the clear winner for modern AI and HPC workloads, delivering 2300 TFLOPS FP16/FP32 and 288 GB VRAM against A16's 4.5 TFLOPS and 16 GB. Superior bandwidth at 8000 GB/s enables scalable training, though availability awaits live offers.

A16 from $0.47/hr

Specifications Compared

SpecA16MI355X
TDP250W750W
VRAM16 GB288 GB
CUDA Cores2,560
Memory TypeGDDR6HBM3e
ArchitectureAmpereCDNA 4
Form FactorsPCIeOAM
InterconnectInfinity Fabric
Tensor Cores80
FP16 Performance4.5 TFLOPS2,300 TFLOPS
FP32 Performance4.5 TFLOPS2300 TFLOPS
Memory Bandwidth231 GB/s8,000 GB/s

Performance Analysis

MI355X vastly outperforms A16 in raw compute: 2300 TFLOPS FP16/FP32 dwarfs A16's 4.5 TFLOPS, translating to over 500 times faster tensor operations for neural network training. This gap accelerates LLM training epochs and enables real-time inference on complex models that A16 processes slowly or cannot handle due to limited throughput.

Memory specs define workload feasibility: MI355X's 8000 GB/s bandwidth and 288 GB VRAM support massive batch sizes in training, minimizing data transfer bottlenecks for models exceeding 100 billion parameters. A16's 231 GB/s and 16 GB restrict it to small batches or distilled models, often requiring model parallelism that increases complexity.

FP8 capability on MI355X at 4600 TFLOPS further optimizes inference for quantized models, reducing latency in production deployments. A16 lacks this, limiting precision flexibility.

Live Cloud Pricing

Real-time prices from 25+ providers. Updated every 60 seconds.

A16

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
Vultr
Vultr
8×NVIDIA A16
64GB VRAM
$0.47/GPU/hr
$3.77/hr total (8×)
Available
Vultr
Vultr
8×NVIDIA A16
64GB VRAM
$0.47/GPU/hr
$3.77/hr total (8×)
Available
Vultr
Vultr
8×NVIDIA A16
64GB VRAM
$0.47/GPU/hr
$3.77/hr total (8×)
Available
Vultr
Vultr
2×NVIDIA A16
64GB VRAM
$0.47/GPU/hr
$0.94/hr total (2×)
Available
Vultr
Vultr
4×NVIDIA A16
64GB VRAM
$0.47/GPU/hr
$1.88/hr total (4×)
Available

Compare real-time pricing across 25+ providers

When to Choose the A16

The A16 excels in cost-sensitive, immediately available scenarios like virtual desktop infrastructure or lightweight AI inference. Its $0.47 per hour pricing across 74 providers and 250W TDP make it ideal for multi-tenant clouds running small models under 16 GB VRAM.

Budget deployments for Stable Diffusion or fine-tuning compact networks favor A16, as PCIe form factor ensures broad compatibility without high power infrastructure.

When to Choose the MI355X

MI355X dominates large-scale AI training and inference where 288 GB HBM3e VRAM handles enormous models. Its 8000 GB/s bandwidth supports high-throughput scientific computing or LLMs with trillion-parameter scales.

Infinity Fabric interconnect aids multi-GPU clusters for HPC, justifying 750W TDP in data centers optimized for peak performance over efficiency.

Use Cases

LLM Training
MI355X

MI355X's 2300 TFLOPS FP16 and 288 GB VRAM support training massive models with large batches. A16's 4.5 TFLOPS and 16 GB VRAM limit it to tiny prototypes.

LLM Inference
MI355X

MI355X's 4600 TFLOPS FP8 and 8000 GB/s bandwidth enable low-latency serving of large LLMs. A16 struggles with models beyond 16 GB.

Fine-tuning
Either

Small fine-tuning tasks fit A16's 16 GB VRAM at low cost; larger ones leverage MI355X's 288 GB for efficiency.

Stable Diffusion
A16

A16's 4.5 TFLOPS FP32 suffices for image generation at $0.47/hr. MI355X overkill for typical resolutions.

Scientific Computing
MI355X

MI355X's 2300 TFLOPS FP32 and Infinity Fabric excel in simulations. A16's 231 GB/s bandwidth bottlenecks complex datasets.

Frequently Asked Questions

What is the VRAM difference between A16 and MI355X?

A16 provides 16 GB GDDR6 VRAM, suitable for small models. MI355X offers 288 GB HBM3e, enabling massive datasets and large LLMs.

How do their FP16 performances compare?

A16 delivers 4.5 TFLOPS FP16 for basic inference. MI355X achieves 2300 TFLOPS FP16, over 500 times higher for training acceleration.

What are the current cloud prices?

A16 averages $0.48 per hour across 74 offers starting at $0.47. MI355X has no live offers available yet.

Which has higher memory bandwidth?

MI355X provides 8000 GB/s, ideal for large batch sizes. A16 offers 231 GB/s, limiting high-throughput tasks.

What are their TDPs?

A16 consumes 250W, fitting low-power setups. MI355X requires 750W for its superior compute density.

Which architecture is newer?

MI355X uses CDNA 4 from 2025 for AI/HPC. A16 relies on Ampere from 2021 for virtualization.

Which is cheaper to rent, the A16 or the MI355X?

Cloud rental prices for both the A16 and MI355X 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 A16 have compared to the MI355X?

The A16 has 16 GB of GDDR6 memory. The MI355X has 288 GB of HBM3e memory.

Can I find A16 and MI355X 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 A16 and the MI355X?

The A16 uses the Ampere architecture (2021) while the MI355X uses CDNA 4 (2025). The MI355X delivers 511.1x the FP16 throughput and 34.6x the memory bandwidth of the A16.