A100 vs RTX 4090
The A100 delivers 312 TFLOPS with 80GB for enterprise AI, while the RTX 4090 provides 83 TFLOPS with 24GB for consumer use. Choose A100 for datacenter, RTX 4090 for desktop.
Overview
Nvidia A100
The Nvidia A100 is a data center GPU on the Ampere architecture, released Q2 2020, with 80 GB HBM2e and 1,935 GB/s memory bandwidth on the PCIe variant.
Nvidia RTX 4090
The Nvidia RTX 4090 is a consumer GPU on the Ada Lovelace architecture, released Q4 2022, with 24 GB GDDR6X and 1,010 GB/s memory bandwidth.
Memory per GPU
3.3x more on A100
A100
RTX 4090
Memory bandwidth
1.9x higher on A100
A100
RTX 4090
GPU interconnect
A100
RTX 4090
Peak performance (FP16)
3.8x higher on A100
A100
RTX 4090
Vendor peak figures. Sparsity and tensor-core conventions differ between vendors.
Precision support
A100
RTX 4090
Highlighted formats are supported by only one of the two.
Architecture
A100
RTX 4090
Released
2 years newer on RTX 4090
A100
RTX 4090
Figures are for each model's headline configuration. Where a form factor carries a different number, it is named under the figure.
Source: A100 datasheet and RTX 4090 datasheet.
Price comparison
Cheapest on-demand
3.3x higher on A100
A100
RTX 4090
Typical rate
4.1x higher on A100
A100
RTX 4090
Median across providers, one vote each, so a large catalog does not outweigh a small one.
Spot floor
1.9x higher on A100
A100
RTX 4090
Full price range
A100
RTX 4090
Lowest to highest listing per GPU-hour, across on-demand, spot, reserved and custom.
Providers listing it
26 more on A100
A100
RTX 4090
Price, last 90 days
A100
RTX 4090
Change in the market-wide median, which moves when providers reprice and when cheaper or more expensive listings enter the market.
Heads up: Prices are estimates from published rates for common setups and vary by region and usage; verify with the provider before provisioning.
Offers and availability
How this list works
Order
Each provider appears once per GPU. We pick the one configuration that speaks for that provider, and rank on it in this order:
- Availability: in stock, then waitlist, then not reported, then out of stock. A price you can act on outranks a cheaper one you cannot.
- Billing type: on-demand first, then reserved, then spot, then quote-only. On-demand leads because it is the only rate you can hold without committing to anything.
- Price: the lowest per-GPU hourly rate the provider lists, converted to USD.
The configuration we pick is chosen the same way, availability before billing before price. The rest of that provider's configurations are on the GPU's own page.
Ties sort alphabetically. Reserved rates are not separated by term length, so a three-year commitment can sit above a one-month one: the label beneath each price says which you are looking at. Providers who publish no rate are listed last within their group.
Transparency and funding
- Ads and sponsors: Paid placements sit at the top of the list and are always labeled as sponsored content. Sponsorship never influences the organic ranking itself.
- Affiliates: Affiliate links are marked. We may earn a commission if you click them, but commissions never affect the order.
- Prices: Shown in USD, converted at daily reference rates where a provider publishes in another currency. A month means 720 hours. How we estimate costs.
A100 Offers
21 of 42 providers report available stock.
RTX 4090 Offers
10 of 16 providers report available stock.
Similar GPUs
Other comparisons in the same class:
Our data for Nvidia A100 was last updated on Aug. 26, 2026, and for Nvidia RTX 4090 on Aug. 26, 2026.