For AI hardware stores and GPU clouds

Put the Strata calculator on your own site

It answers what local AI buyers ask before they spend: can this PC run Qwen 3.8 Flash Next with Strata, on its GPU plus system RAM, and at how many tok/s. One licence puts it on your pages, with five more vramcalculator.com tools beside it.

See plans Install guide

One licence, all six tools. Pay 3 months in crypto and save 10%, or monthly by card.

Live, try it

This is the real widget.data-tool="strata"

Checked at the sourceEvery model is checked against its lab's own config file

27 of 27 fits heldTested on real cards: every time it said fits, the model ran

Six tools, one keyPick the tool for each page with one attribute

Under 85 KBPer tool, compressed, loaded only when a visitor scrolls near it

Tested on real cards In 33 llama.cpp runs, every time it said a model fits, it ran: 27 of 27. Every run published, misses included. See the record

Plans

One licence. Every tool.

Paid upfront for 3 months, 10% less than monthly. It does not renew by itself: we email you a payment link before it ends.

ALL SIX TOOLS

Pro

Every tool, on your domain

$135 for 3 months in crypto, $45 a month

Pay with crypto

Strata, Project Maya, GPU checker, VRAM calculator, Mac checker and speed estimator
Embed any of them, on as many pages as you like
Your domain, plus its www and staging subdomains
No “Powered by” line, so it reads as part of your site
The JSON API, for the numbers in your own layout
Every catalogue update reaches your pages on its own

Fleet

Several domains or brands

from$1,500per year, invoiced

Ask for a quote

or email

Everything in Pro, plus

A Pro key for every domain you run
Models added on request
Invoiced, not card billed

STEP 1Pay for Pro3 months in crypto at 10% off, or monthly by card.

STEP 2Send us your domainA key is signed for one site. It arrives by email within one working day.

STEP 3Paste one line per toolChoose the tool with data-tool. The install guide is just below.

Add a tool to a page

One line, wherever you want the tool to appear. data-tool picks which one.

<script src="https://vramcalculator.labinvisible.com/embed.js"
        data-key="YOUR-LICENCE-KEY"
        data-tool="strata"
        async></script>

Replace YOUR-LICENCE-KEY with the key we email you. That is all the setup there is. The tool sizes itself, so you never have to guess a height that turns out wrong on phones.

WordPress with Elementor: add an HTML widget and paste it in. WordPress without Elementor: a Custom HTML block. Shopify: paste it into the template where you want it to show. Anything else: it is a plain script tag and it goes in the page body.

The six tools

Use the name or its number. data-tool="1" and data-tool="strata" load the same tool.

1  strata        Can this PC run Qwen 3.8 Flash Next with Strata, and how fast
2  maya          Project Maya: GLM 5.3 Flash and DeepSeek V4.1 Flash 1017 on VRAM, RAM and SSD
3  gpu-checker   Which AI models fit this GPU
4  calculator    VRAM calculator: any model, any context, any card
5  mac-checker   Which AI models fit this Mac
6  speed         Tokens per second on a given machine

Put a different tool on each page, or several on one page: each line is its own tool. Leave data-tool out and the GPU checker loads.

Preset the card on a GPU product page

With the GPU checker, data-gpu opens it already answering for the card on that page.

data-tool="gpu-checker" data-gpu="RTX 5090"
data-tool="gpu-checker" data-gpu="RX 7900 XTX"
data-tool="gpu-checker" data-gpu="RTX PRO 6000 Blackwell 96GB"

A customer sees what the card in front of them runs, rather than a dropdown they have to operate. Partial names work: data-gpu="4090" finds the RTX 4090.

Where your licence key is

It arrives by email after your payment, within one working day. It looks like VCP-XXXXX-XXXXX-XXXXX-XXXXX, and one key runs every tool on your domain.

It is not secret in the way a password is, but it is tied to your domain and can be revoked, so do not publish it outside your own site.

If you see a message instead of the tool

The tool always says what is wrong rather than showing an empty box.

"This embed is not licensed for this site" The data-key is missing, mistyped or revoked, or the page is on a domain the key was not issued for. Reply to your key email with the new domain and we send you a key for it.

"Unknown tool" data-tool does not match a name or number in the list above.

"This widget needs its full height to answer" Something on your page is constraining the frame. Remove any fixed height or overflow: hidden on the container around it. The supplied snippet handles sizing on its own.

What it costs your page

37 to 81 KB per tool, compressed, loaded lazily, so it does not block anything and does not download at all until a visitor scrolls near it.

Your page's styling cannot break it and it cannot break your page. Each tool runs in its own frame, so your theme's CSS and its CSS never meet.

The JSON API, included in Pro

One call, one answer, for putting the numbers inside your own interface. Call it from JavaScript on your own site. The key is bound to your domain and checked on every call.

GET https://vramcalculator.labinvisible.com/v1/calculate
      ?key=YOUR-LICENCE-KEY
      &model=qwen38-27b
      &quant=q4_k_m
      &context=32768
      &gpus=1

Returns total memory in GiB with the weights, KV cache and overhead split out, plus the smallest cards that fit.

{
  "memory_gib": { "total": 19.19, "weights": 15.93, "kv_cache": 2.15, "overhead": 1.11 },
  "smallest_gpus_that_fit": [
    { "name": "RTX 3090", "vram_gb": 24, "vendor": "NVIDIA" }
  ]
}

Why the numbers hold up. Weights are the real published file size wherever one exists, not an estimate. The KV cache is computed from each model's own attention geometry, taken from the lab's configuration file.