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by Epic (880 points)

1 Answer

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by Mythic (1.6k points)
edited by
FeaturesATXMicro-ATXMini-ITX
Size305 x 244 mm (12 x 9.6 in)244 x 244 mm (9.6 x 9.6 in)170 x 170 mm (6.7 x 6.7 in)
Expansion SlotsUp to 7 PCIe slotsUp to 4 PCIe slotsUp to 1 PCIe slots
Ram SlotsTypically 4 to 8 slotsTypically 2 to 4 slotsUsually 2
Power PhasesMore power phases, better for overclockingFewer Power PhasesLimited Power Phases
Use CaseHigh-performance desktops, gaming PCs, workstationsBudget builds, mid-range systemsSmall form factor builds, HTPCs
CoolingMore space for cooling solutionsLimited space compared to ATXVery limited space for cooling solutions
Drive SupportMultiple HDD/SSD supportFewer HDD/SSD optionsLimited HDD/SSD options 
PriceGenerally more expensiveModerately pricedCan be more expensive despite smaller size due to compact design
Case CompatibilityFull tower, mid towerMid tower, micro towerMini-ITX cases, some micro tower cases
FeaturesMore features and portsModerate featuresFewer features due to size constraints

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