Free Bottleneck Calculator Widget
Every hardware guide eventually hits the same sentence: "check whether your CPU will hold this card back." This is that check, as a working calculator your readers can use without leaving your page. Build the snippet below, paste it, done. It is free, it needs no account, and it puts nothing on your site that follows your readers around.
Start on a specific pairing (optional)
Writing about one build? Set it here and the widget loads with that answer already on screen, and the credit link points at the matching result page.
Width
WordPress Custom HTML block, Ghost, Squarespace code block, or any plain HTML page.
Live preview
This is the real widget, not a mockup. It reads the same hardware database as the site, so it picks up new CPUs and GPUs without you touching the code again.
The terms, in full
- Free, permanently, for any site. Commercial, personal, one page or a thousand. No account, no API key, no rate limit.
- Keep the credit link. That single line under the widget is what we are trading for. Style it to match your page if you like; just leave it followable.
- Nothing runs on your readers. No analytics, no ad partner script, no service worker, no cookies. We stripped all of it from the embed route specifically so this sentence could be true.
- It maintains itself. New hardware appears in your embed as we add it. You never edit the snippet again.
- No ads inside the widget, ever. If we ever put advertising in the embed, we would deserve to be pulled off every site running it.
Two things worth knowing first
It is dark. The widget inherits our dark theme, so on a white page it lands as a dark card. Plenty of sites use it that way on purpose, but if your design cannot carry that, you will want the plain link version instead. A light theme is the most common thing we get asked for and it is not built yet.
It answers in ranges, not one fake number.The engine gives a bounded estimate with the resolution stated, because a percentage accurate to one decimal place is a thing calculators invent to look confident. If your readers expect "your CPU is bottlenecking by 14.7%", this will read as less certain than what they are used to. It is less certain. That is the point, and the method is public along with the open-source engine.
Eleven languages
Not machine-translated page furniture around an English tool: the labels, the resolution picker and the verdict lines are all written per language, and the credit link points at the calculator in that language. As far as we can tell no other bottleneck calculator offers this, which is the whole reason we built it.
| Language | Embed URL | Credit link points at |
|---|---|---|
| English | /embed | Bottleneck Checker |
| Español | /embed?lang=es | Calculadora de cuello de botella CPU y GPU |
| Italiano | /embed?lang=it | Calcolo collo di bottiglia CPU e GPU |
| 한국어 | /embed?lang=ko | CPU 그래픽카드 병목 계산기 |
| Français | /embed?lang=fr | Calculateur de goulot d etranglement CPU GPU |
| Português | /embed?lang=pt | Calculadora de gargalo CPU e GPU |
| Deutsch | /embed?lang=de | Flaschenhals-Rechner fuer CPU und GPU |
| Polski | /embed?lang=pl | Kalkulator bottleneck CPU i GPU |
| Čeština | /embed?lang=cs | Kalkulacka bottleneck pro CPU a GPU |
| Ελληνικά | /embed?lang=el | Υπολογιστής bottleneck CPU και GPU |
| Русский | /embed?lang=ru | Калькулятор bottleneck для CPU и GPU |
Pre-set it to the build you are writing about
The embed URL takes four parameters, all optional: cpu, gpu, res and lang. A review of an RTX 5070 build can drop in a widget that already shows the verdict for that exact pair, and the reader can then swap their own CPU in to see where they stand:
https://bottleneckpc.com/embed?cpu=ryzen-7-9800x3d&gpu=rtx-5070&res=1440p&lang=frPart IDs are the same slugs the site uses in its URLs, so you can read one off any result page, or just pick the pair in the builder above and let it write the snippet. Every result page also carries its own one-click add this to your site button.
Frequently Asked Questions
Is the widget really free?
Yes, and there is no account to make, no key to request, and no usage tier. The credit link under the widget is the entire price. We built it because a calculator someone else hosts is worth more to us than an email asking them to link us.
Does the widget put cookies or tracking scripts on my site?
No. The embed route is deliberately stripped: no analytics, no advertising partner script, no service worker, no cookies. The only request it makes is to bottleneckpc.com for the widget itself. That was a specific change made so the widget would be safe to paste on a site with a strict privacy policy.
Can I remove the credit link?
Please do not. The link under the widget is the only thing we get out of this, and it is what pays for keeping the hardware database current. Everything else about the widget is yours to place, size and style around.
What happens when new CPUs and GPUs come out?
Nothing, on your end. The widget reads the same hardware database as the site, which is updated continuously, so a card that launched last week appears in your embed without you editing the snippet.
My site or forum strips iframes. Can I still use it?
Use the plain link or BBCode option in the builder above. You lose the interactive widget, but the link still sends your readers to a working tool, which is the part they actually wanted.
Which languages are supported?
Eleven: English, Spanish, Italian, Korean, French, Portuguese, German, Polish, Czech, Greek and Russian. Add lang= to the embed URL and the widget, its labels and its verdicts all switch, and the credit link points at the tool in that language rather than dropping your readers into English.
Will the widget change or disappear later?
The URL contract - /embed with cpu, gpu, res and lang parameters - is one we intend to keep stable, because breaking it would break every page that trusted us. If the widget ever has to change shape, old embeds keep working.
Something not working, or need a size or language we do not have? Tell us and we will fix it. Wondering what the engine actually does before you put it in front of your readers, read how it works.