Will it fit?
Will the Arc B580 fit in my case?
A typical Arc B580 is about 272 mm long, 2 slots thick. It fits 12 of the 12 popular cases we track. Check your exact model's length against the case limit below.
Key facts· updated
- A typical Arc B580 is about 272 mm long and 2 slots thick (maker spec pages, checked Oct 29, 2026).
- The Arc B580 fits 12 of the 12 popular cases PC Atlas tracks (case maker limits, checked Oct 29, 2026).
- The smallest tracked case that fits the Arc B580 is the Lian Li A4-H2O, which takes cards up to 322 mm.
| Case | Card limit | Room | Fits? |
|---|---|---|---|
| Montech AIR 100micro-ATX tower | 330 mm | ~58 mm | Yes |
| Lian Li A3-mATXmicro-ATX tower | 415 mm · 4 slots | ~143 mm | Yes |
| Phanteks XT Pro Ultramid tower | 415 mm | ~143 mm | Yes |
| Corsair 4000D Airflowmid tower | 360 mm340 mm with a front radiator | ~88 mm | Yes |
| Lian Li Lancool 216mid tower | 392 mm | ~120 mm | Yes |
| NZXT H6 Flowmid tower | 365 mm | ~93 mm | Yes |
| Fractal Design Northmid tower | 355 mm300 mm with a front radiator | ~83 mm | Yes |
| HYTE Y70mid tower | 422 mm | ~150 mm | Yes |
| Fractal Design Meshify 2 XLfull tower | 524 mm | ~252 mm | Yes |
| Phanteks NV7full tower | 450 mm | ~178 mm | Yes |
| Cooler Master NR200P V2mini-ITX case | 356 mm · 3 slots | ~84 mm | Yes |
| Lian Li A4-H2Omini-ITX case | 322 mm | ~50 mm | Yes |
Case limits from case maker spec pages and card length from typical models (checked 2026-10-29). Room = case limit minus a typical Arc B580. “Yes, most models” = under 40 mm to spare; “Tight” = under 15 mm. Page updated .
Questions
Will the Arc B580 fit in my case?
A typical Arc B580 is about 272 mm long, 2 slots thick. It fits 12 of the 12 popular cases we track. Check your exact model's length against the case limit below.
How long is the Arc B580?
About 272 mm for a typical model and 2 slots thick. Big triple-fan versions can be 20 to 40 mm longer, so check your exact model on the maker's spec page.
What's the smallest case that fits the Arc B580?
Of the cases we track, the Lian Li A4-H2O (a mini-ITX case, cards up to 322 mm).
What about a front radiator?
Some cases lose graphics card room when a radiator is mounted in the front. Where a case maker lists the shorter limit, the table shows it in the notes.