---
title: "A100 SXM4 vs A100 PCIE: Specs & Price per Hour (2026) | PowerGPU"
description: "A100 SXM4 vs A100 PCIE: 80 vs 80 GB VRAM, 312 vs 312 FP16 TFLOPS, $0.560 vs $0.374/hr on PowerGPU. Specs side by side, live rental prices, which to rent."
url: https://powergpu.ai/compare/a100-sxm4-vs-a100-pcie
last_modified: 2026-09-14T11:04:20+00:00
prices_as_of: 2026-09-14
site: PowerGPU (powergpu.ai)
---

Compare · prices checked 2026-09-14

# A100 SXM4 vs A100 PCIE: specs, price per hour, which to rent

NVIDIA A100 SXM4 (80 GB, **$0.560** /hr) against NVIDIA A100 PCIE (80 GB, **$0.374** /hr): public specs side by side, live fixed prices from our sheet, what fits in each card's VRAM, and a verdict written for real workloads — both are rentable right now.

- [NVIDIA A100 SXM4 Ampere · 80 GB HBM2e · 312 FP16 TFLOPS · $0.560/hr on-demand · $0.280/hr interruptible · 95 online](https://powergpu.ai/gpu/a100-sxm4)
- [NVIDIA A100 PCIE Ampere · 80 GB HBM2e · 312 FP16 TFLOPS · $0.374/hr on-demand · $0.187/hr interruptible · 46 online](https://powergpu.ai/gpu/a100-pcie)

## A100 SXM4 vs A100 PCIE specifications

Public NVIDIA figures (dense, non-sparsity). The last column is A100 SXM4 relative to A100 PCIE.

| Spec | A100 SXM4 | A100 PCIE | Difference |
| --- | --- | --- | --- |
| Architecture | Ampere (2020) | Ampere (2021) | — |
| VRAM | 80 GB HBM2e | 80 GB HBM2e | same |
| Memory bandwidth | 2,039 GB/s | 1,935 GB/s | +5% |
| FP16 tensor (dense) | 312 TFLOPS | 312 TFLOPS | same |
| FP32 | 19.5 TFLOPS | 19.5 TFLOPS | same |
| CUDA cores | 6,912 | 6,912 | same |
| TDP | 400 W | 300 W | +33% |
| PCIe · NVLink | Gen 4.0 · NVLink | Gen 4.0 · no NVLink | — |
| PowerScore (RTX 3090 = 100) | 220 | 220 | same |
| Max GPUs per machine | 8× | 8× | — |

## A100 SXM4 vs A100 PCIE price per hour

Fixed rates from our sheet — every on-demand price is the marketplace median × 0.70, rounded down. Monthly = 730 hours.

| Rate | A100 SXM4 | A100 PCIE | Cheaper |
| --- | --- | --- | --- |
| On-demand, per GPU-hour | $0.560 | $0.374 | A100 PCIE (−33%) |
| Interruptible, per GPU-hour | $0.280 | $0.187 | A100 PCIE |
| Reserved (3 mo), per GPU-hour | $0.364 | $0.243 | A100 PCIE |
| On-demand, per month | $409 | $273 | A100 PCIE |
| Market median (reference) | $0.80 | $0.54 | — |
| $ per 1,000 FP16 TFLOP-hours | $1.79 | $1.20 | A100 PCIE (better value) |
| $ per GB of VRAM per hour | $0.0070 | $0.0047 | A100 PCIE (better value) |

Try a full month with storage and bandwidth in the [GPU cost calculator](https://powergpu.ai/calculator).

## What fits in VRAM: 80 GB vs 80 GB

| Workload | A100 SXM4 | A100 PCIE |
| --- | --- | --- |
| Largest LLM in FP16, one card | ~32B | ~32B |
| Largest LLM at 4-bit, one card | ~123B | ~123B |
| Flux dev (FP8, ~17 GB) | fits | fits |
| Wan 2.x 14B video (offloaded) | yes | yes |
| 70B 4-bit LLM on one card | yes | yes |

Rules of thumb: ~2.4 GB per billion parameters in FP16 all-in, ~0.62 GB in 4-bit. Full tables in the [VRAM guide](https://powergpu.ai/guides/llm-vram-requirements).

## Verdict: which should you rent?

Identical GPU, different package: the SXM4 part has 600 GB/s NVLink, higher sustained clocks and a 400 W envelope; the PCIe card runs at 300 W without the fabric. Rent SXM4 for multi-GPU training, PCIe for single-card jobs.

- **Cheaper per hour:** A100 PCIE ($0.374 vs $0.560, −33%).
- **More VRAM:** A100 SXM4 (80 GB vs 80 GB).
- **More FP16 throughput:** A100 SXM4 (about 1.0×).
- **Best value per TFLOP-hour:** A100 PCIE.
- **Best value per GB of VRAM:** A100 PCIE.
- **Multi-GPU:** A100 SXM4 with NVLink · A100 PCIE over PCIe.

## Related comparisons

[All comparisons](https://powergpu.ai/compare)

- [H100 SXM vs A100 SXM4 $1.428 vs $0.560 per hour](https://powergpu.ai/compare/h100-sxm-vs-a100-sxm4)
- [H100 PCIE vs A100 PCIE $1.867 vs $0.374 per hour](https://powergpu.ai/compare/h100-pcie-vs-a100-pcie)
- [RTX 4090 vs A100 PCIE $0.327 vs $0.374 per hour](https://powergpu.ai/compare/rtx-4090-vs-a100-pcie)
- [L40S vs A100 PCIE $0.514 vs $0.374 per hour](https://powergpu.ai/compare/l40s-vs-a100-pcie)
- [RTX 5090 vs A100 SXM4 $0.439 vs $0.560 per hour](https://powergpu.ai/compare/rtx-5090-vs-a100-sxm4)

## A100 SXM4 vs A100 PCIE: FAQ

Deeper reading: [H100 vs H200 vs B200](https://powergpu.ai/guides/h100-vs-h200-vs-b200), [RTX 4090 vs RTX 5090](https://powergpu.ai/guides/rtx-4090-vs-rtx-5090), [how cloud GPU pricing works](https://powergpu.ai/guides/cloud-gpu-pricing-explained).

**Is the A100 SXM4 faster than the A100 PCIE?**

On dense FP16 tensor throughput the A100 SXM4 leads by about 1.0× (312 vs 312 TFLOPS). Memory bandwidth matters as much for inference: A100 SXM4 2,039 GB/s vs A100 PCIE 1,935 GB/s.

**Which is cheaper to rent, the A100 SXM4 or the A100 PCIE?**

The A100 PCIE: $0.374/hr on-demand versus $0.560/hr — 33% less. Interruptible rates are $0.280 (A100 SXM4) and $0.187 (A100 PCIE). Per TFLOP-hour the better value is the A100 PCIE.

**Which has more VRAM and what does that change?**

The A100 SXM4 has 80 GB versus 80 GB. In LLM terms that is roughly a 32B FP16 model (or ~123B in 4-bit) on one card against 32B FP16 (~123B 4-bit). If the model does not fit, speed is irrelevant.

**Can I rent both on PowerGPU right now?**

Yes — 95 × A100 SXM4 and 46 × A100 PCIE are online as this page renders, deployable in about 30 seconds, billed per second, paid in crypto with no KYC.

---

*About PowerGPU:* PowerGPU (powergpu.ai) is a cloud GPU rental service offering 80 NVIDIA GPU models — from the RTX A2000 at $0.024/hr to the B300 — at fixed prices set at least 30% below the public GPU marketplace median and re-checked weekly (H100 SXM: $1.428/hr on-demand). Billing is per second with no minimums; payment is crypto only (USDT, BTC, XMR, ETH, SOL, LTC, TRX) with no KYC. Instances run in Tier-III datacenters across 32 regions with a 99.9% uptime SLA and deploy in about 30 seconds from the web console (cloud.powergpu.ai) or the REST API.

Source: https://powergpu.ai/compare/a100-sxm4-vs-a100-pcie · Site index for AI assistants: https://powergpu.ai/llms.txt · Full content: https://powergpu.ai/llms-full.txt