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PC Case Assembly Configurator (Extended DB)

Professional hardware compatibility checker. Verify chassis clearances against a database of 250+ GPUs, Cases, and Coolers including 40-Series and RX-7000.

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About

Component physical incompatibility is the primary cause of RMA returns in custom PC building. This utility eliminates the guesswork by referencing a massive dataset of chassis specifications against Graphics Card lengths and CPU Cooler heights. Accuracy is critical: a discrepancy of 2mm in CPU cooler clearance can prevent a side panel from closing, potentially shattering tempered glass due to pressure stress points.

We cross-reference the Maximum Video Card Length (Lgpu) of the case against the Card Length plus front-fan margins. Additionally, we check the Maximum CPU Cooler Height (Hmax) against air cooler heatsinks and AIO block constraints. This tool accounts for Extended-ATX chassis volume and Small Form Factor (SFF) strict tolerances.

pc builder case compatibility gpu clearance atx dimensions cpu cooler height

Formulas

Interference Calculation:

Istatus = {
PASS if (Lcase_max − Lgpu) ≥ 0FAIL if (Lcase_max − Lgpu) < 0

When calculating for water cooling configurations, the effective length reduces significantly.

Net GPU Clearance with Front AIO:

Cnet = Lcase_max − (Wradiator + Wfan + Lgpu)

Reference Data

Hardware TypeMetricTolerance MarginCritical Failure Mode
Tempered Glass ChassisCPU Clearance0 - 1mmPanel shatter risk upon closure
Front Intake SetupGPU Length+30mm (Rad + Fan)GPU collides with Radiator
Small Form Factor (ITX)Slot Thickness0.5 SlotsFans scrape side panel mesh
40-Series GPUConnector Width+25mm (12VHPWR Cable)Cable bend radius too tight
Radiator Top MountMB Overlap40 - 55mmInterference with RAM Modules

Frequently Asked Questions

Extended ATX (E-ATX) is not a strict industry standard size like ATX (305x244mm). In case specs, it usually means the case supports motherboards wider than 244mm (typically up to 272mm or 285mm). Always check the exact width supported if you have a premium motherboard.
The database tracks card length and slot width. For width clearance (adapter bend radius), a general rule is you need at least 175mm CPU cooler clearance to safely route a 4090 power cable without an acute bend that could cause melting risks.
Technically yes, but practically risky. You will have 0mm to maneuver the card during installation. We recommend a 10mm buffer to allow for the angle of insertion.
No. A "360" radiator refers to the fans (120x3). The physical radiator is often 390-400mm long due to the fluid tanks on the ends. Most modern cases account for this, but vintage cases might not.