GPU model
NVIDIA Rubin CPX: specs, VRAM and rental prices
NVIDIA Rubin CPX: 128 GB of GPU memory (GDDR7), no public rental price listed. Specs from NVIDIA, prices as of Oct 29, 2026.
Rubin CPX is a Rubin-generation GPU that NVIDIA announced on Sep 9, 2025 for long-context inference. NVIDIA lists 128 GB of GDDR7 memory and up to 30 petaflops of NVFP4 compute, and expected it to be available at the end of 2026. No tracked provider lists a public rental price yet.
Prices were last checked Oct 29, 2026. A listing not re-checked for 7 days is greyed and left out of every lowest-price figure; after 14 days it is removed from the page.
NVIDIA Rubin CPX specifications
| Specification | Rubin CPX | Source |
|---|---|---|
| Architecture | Rubin (Rubin CPX) | nvidianews.nvidia.com |
| Status (NVIDIA) | Announced. Expected at the end of 2026 | nvidianews.nvidia.com |
| GPU memory | 128 GB | nvidianews.nvidia.com |
| Memory type | GDDR7 | nvidianews.nvidia.com |
| NVFP4 compute | Up to 30 PFLOPS | nvidianews.nvidia.com |
| Memory bandwidth | Not published | nvidianews.nvidia.com |
| Max thermal design power | Not published | nvidianews.nvidia.com |
Specifications are the figures in NVIDIA’s announcement. It prints no memory bandwidth or power for the chip. Not published on the pages cited here: Memory bandwidth; Board power.
Sources: NVIDIA Rubin CPX release (Sep 9, 2025). Every figure above is copied from these NVIDIA pages; nothing is estimated.
Rubin CPX rental prices by provider
No provider currently lists a public per-GPU-hour price for the Rubin CPX that the Census has been able to confirm, so there is no rental price to show. The specifications above are still NVIDIA’s own.
Compare the Rubin CPX with other GPUs
- Rubin CPX vs Vera Rubin: specs side by side with the lowest listed rental price for each.
- Rubin CPX vs B300: specs side by side with the lowest listed rental price for each.
Price history
The history chart appears once there are two daily snapshots of an on-demand price. Tracking began Oct 15, 2026; there is no on-demand snapshot for this GPU yet.
Embed this chart
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How these prices are collected
- What counts
- Only prices a provider publishes on a public pricing page or in its public price list, opened by the Census on the day shown. A marketplace is listed under the same rule as every other provider: it must publish per-GPU-hour prices publicly, with no login, and its rows are shown with the type Marketplace. Quotes and “contact sales” rows are not listed, and neither are purchase prices.
- $ per GPU-hour
- The listed price per GPU-hour. Where a provider lists a price per instance, the Census divides it by the GPUs in that instance and shows the original figure under it. Nothing else is converted or estimated. Google TPUs and AWS Trainium and Inferentia chips are priced per chip-hour on the same terms, with “chip” in place of “GPU”.
- Pricing types
- On-demand, spot (including tiers a provider calls preemptible or low-priority), reserved with the term the provider states, and marketplace. Reserved rows without a stated term are not listed. A marketplace row is the lowest per-GPU-hour price its public page shows for that GPU, which comes from third-party hosts and changes often. Marketplace rows are a separate type: they appear in the table, filters, downloads and feeds, but never in the “lowest on-demand” or “lowest spot” figures.
- Variants
- SXM, PCIe, NVL and similar versions are kept separate when the provider names them. A provider that does not name the variant is shown without one.
- Freshness
- Every listing carries the date it was last confirmed, and the daily run re-opens each one. If a listing goes 7 days without a re-check it stays on the page greyed, labelled with the date it was last confirmed, and drops out of the “lowest” figures and the calculator’s default results. At 14 days without a re-check it is taken off the site; the daily history still holds it.
- History
- Each daily run saves a snapshot, so the model pages can chart the lowest listed on-demand price over time and the change log can show what moved. History began Oct 15, 2026.
- Differences between providers
- Listed prices are not like for like: regions, minimum instance sizes, networking, storage, commitments and availability differ and are not priced here. Check the provider before relying on a figure.
Providers checked but not listed
- Vast.ai: Its pricing page loads live "from" prices from a public JSON file whose terms allow display and citation with attribution but require a data license for bulk collection, redistribution or use in any index, benchmark or derivative product. The Census republishes prices as open data, so it does not list Vast.ai without that license.
- Voltage Park: Its pricing pages say "Contact for pricing" for every GPU; one homepage line says "Starting at $1.99/hr" without a GPU model or unit.
Rubin CPX: common questions
How much VRAM does the Rubin CPX have?
NVIDIA lists 128 GB of GPU memory for the NVIDIA Rubin CPX, which is GDDR7. The specification table on this page shows each figure with the page it came from.
How much does it cost to rent a Rubin CPX per hour?
No provider currently lists a public per-GPU-hour price for the Rubin CPX that the Census has been able to confirm, so no rental price is shown.
Can I rent a Rubin CPX by the hour?
Not at a public price the Census can confirm. No tracked provider lists a public per-GPU-hour price for the NVIDIA Rubin CPX right now. The Census adds a price as soon as a provider publishes one on a public page or price list.
Which architecture is the Rubin CPX built on, and when was it announced?
The NVIDIA Rubin CPX uses the Rubin architecture and was announced or launched in 2025, according to the NVIDIA page cited in the specifications.
Related: All GPU prices · GPU comparisons · Rental cost calculator · H100 · H200 · B200 · B300 · GB200 NVL72 · GB300 NVL72 · A100 · L40S · RTX PRO 6000 · L4 · T4 · MI300X · MI325X · MI355X · Trainium1 · Trainium2 · Trainium3 · Inferentia2 · TPU v5e · TPU v5p · TPU v6e · Ironwood · MI450 · Vera Rubin · Rubin Ultra
Cite this page
Last updated Oct 29, 2026. Figures may change as records are updated — include the date you retrieved them.
| APA | Data Center Census. (2026). NVIDIA Rubin CPX specs and rental prices. Retrieved from https://datacentercensus.com/gpu-prices/rubin-cpx |
|---|---|
| MLA | “NVIDIA Rubin CPX specs and rental prices.” Data Center Census, Oct 29, 2026, https://datacentercensus.com/gpu-prices/rubin-cpx. |
| Link | https://datacentercensus.com/gpu-prices/rubin-cpx |
Republishing a figure or table? Attribute it to Data Center Census with a link to this page. The underlying data is downloadable as JSON and CSV; the press kit has standing figures and contact details.