mATX or ATX

jakhmakc

Commendable
Feb 6, 2018
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I can’t decide mATX or ATX for my next gaming build. My friend said ATX is better because of more expansion slots but does anyone use 3 GPUs for gaming? I don’t think so. The one thing is, should I choose ATX for the higher overclock ability or should I go mATX and sacrifice that little overclock ability? And is there any other difference that I should consider? Thanks for your help
 
the mATX standard is around mainly for if you were to build a portable/mini PC with a small case. mATX may have less options or the same as a normal ATX mobo but there is less space so if you have a big GPU then it will cover up more expansion slots for other PCI-E cards you may want to install in your PC
 

R0GG

Distinguished
There are some fully option- featured top tier gaming/overclocking mini ITX motherboards (especially ASrock and ASUS brands) for mini towers and Small Form Factors PCs, especially that the tendency nowadays is to go for one powerful Graphic Card (instead of juggling with SLI and Crossfire with their drivers, scalability and heat issues) so one PCIe 3.0x16 of the mini ITX board would largely suffice, some of them even feature dual M.2 NVMe !

Only difference is number of PCIe expansion ports, number of fan headers, and eventually number of Sata ports.
A good compromise would be getting a Micro ATX motherboard which size is in the middle between ATX and mini ATX and has advantage (depending on the brand and model) over mini ITX is few extra sata ports and PCI expansion ports and an extra PCIe 3.0 for a SLI or Crossfire

Basically a top tier brand name mini ITX would pack more features and would bring more overclocking potential than an entry or mid level full ATX motherboard.
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Captaingadget

Reputable
Jan 20, 2017
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Depends what GPU you want, but if you go for anything big like a GTX 1070/Ti/1080 you might not be able to fit it in at all. I just got a Gigabyte 1070Ti Aorus and the damn thing is so long, it only just fits inside my mid tower on an ATX mobo and I had to move my SSD out of the way. If space is not an issue go for the ATX, it'll give you more flexibility and future-proofing.
 

R0GG

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Even some 3 FAN cooled relatively lengthy Graphics like Asus Strix 1080ti was fit successfully in one of the most compact computer cases : DAN case SFX, most Small Form Factor modern cases are built around fitting good sized graphics in.