Specifications Compared
| Spec | MI355X | RTX-3070 |
|---|---|---|
| TDP | 750W | 220W |
| VRAM | 288 GB | 8 GB |
| Memory Type | HBM3e | GDDR6 |
| Architecture | CDNA 4 | Ampere |
| Form Factors | OAM | PCIe |
| Interconnect | Infinity Fabric | |
| FP8 Performance | 4,600 TFLOPS | |
| FP16 Performance | 2,300 TFLOPS | 20.3 TFLOPS |
| FP32 Performance | 2300 TFLOPS | 20.3 TFLOPS |
| FP64 Performance | 72 TFLOPS | |
| INT8 Performance | 4,600 TOPS | |
| Memory Bandwidth | 8,000 GB/s | 448 GB/s |
Performance Analysis
The MI355X's 2300 TFLOPS in FP16 and FP32 enables training large language models at speeds over 100 times faster than the RTX 3070 Ti's 20.3 TFLOPS, reducing epoch times dramatically for datasets exceeding 8 GB. Equal FP16 and FP32 performance on the MI355X optimizes mixed-precision training, while the RTX 3070 Ti struggles with memory-bound tasks due to its lower throughput.
Memory bandwidth defines batch size feasibility: the MI355X's 8000 GB/s supports batches thousands of times larger than the RTX 3070 Ti's 448 GB/s, preventing out-of-memory errors in inference for models like 70B-parameter LLMs. For inference, the MI355X's FP8 at 4600 TFLOPS accelerates high-throughput serving, whereas the RTX 3070 Ti suits small-scale deployments. Power draw reflects this, with the MI355X at 750W versus 220W, demanding robust cooling in datacenters.
Live Cloud Pricing
Real-time prices from 25+ providers. Updated every 60 seconds.
No live offers available at this time.
When to Choose the MI355X
Choose the MI355X for large-scale LLM training or scientific simulations requiring over 288 GB VRAM and 8000 GB/s bandwidth to handle massive datasets without splitting. Its 2300 TFLOPS FP16 performance excels in multi-node clusters via Infinity Fabric, ideal for enterprises tackling exascale computing.
When to Choose the RTX 3070 Ti
The RTX 3070 Ti fits budget gaming, Stable Diffusion prototyping, or light fine-tuning at $0.06 per hour, where 8 GB VRAM and 448 GB/s suffice for models under 7B parameters. Its PCIe form factor and 220W TDP enable easy desktop or small cloud instances without datacenter infrastructure.
Use Cases
The MI355X's 288 GB HBM3e VRAM and 2300 TFLOPS FP16 handle massive models and datasets, unlike the RTX 3070 Ti's 8 GB limit.
4600 TFLOPS FP8 and 8000 GB/s bandwidth support high-throughput serving of large models; the RTX 3070 Ti caps at small batches.
2300 TFLOPS FP32 accelerates parameter-efficient tuning on huge datasets; RTX 3070 Ti's 20.3 TFLOPS limits scale.
RTX 3070 Ti's 448 GB/s and $0.06/hr pricing suit image generation prototyping; MI355X overkill for consumer resolutions.
MI355X's 288 GB VRAM and Infinity Fabric enable complex simulations; RTX 3070 Ti's 8 GB restricts problem sizes.
Frequently Asked Questions
Which GPU has more VRAM: MI355X or RTX 3070 Ti?▾
The MI355X provides 288 GB HBM3e VRAM, while the RTX 3070 Ti has 8 GB GDDR6. This gap allows the MI355X to load models 36 times larger without paging.
How do FP16 performance levels compare?▾
MI355X achieves 2300 TFLOPS FP16, over 113 times the RTX 3070 Ti's 20.3 TFLOPS. This translates to drastically faster AI training on the MI355X.
What is the memory bandwidth difference?▾
MI355X offers 8000 GB/s, versus 448 GB/s on RTX 3070 Ti. Higher bandwidth on MI355X supports larger batch sizes in deep learning.
What are the TDPs of these GPUs?▾
MI355X consumes 750W, suited for datacenters, while RTX 3070 Ti uses 220W for efficient consumer setups. Power needs align with workload scale.
Is there cloud pricing for these GPUs?▾
RTX 3070 Ti starts at $0.06 per hour across live offers; MI355X has no live offers currently. RTX 3070 Ti provides immediate low-cost access.
Which architecture is newer?▾
MI355X uses CDNA 4 from 2025; RTX 3070 Ti employs Ampere from 2020. The five-year gap drives MI355X's superior 2300 TFLOPS versus 20.3 TFLOPS.
Which is cheaper to rent, the MI355X or the RTX 3070?▾
Cloud rental prices for both the MI355X and RTX 3070 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 RTX 3070?▾
The MI355X has 288 GB of HBM3e memory. The RTX 3070 has 8 GB of GDDR6 memory.
Can I find MI355X and RTX 3070 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 RTX 3070?▾
The MI355X uses the CDNA 4 architecture (2025) while the RTX 3070 uses Ampere (2020). The MI355X delivers 113.3x the FP16 throughput and 17.9x the memory bandwidth of the RTX 3070.