What size fan for the back panel can I install on an Acer GX-785 UR16?

ijustneedacasefan
ijustneedacasefan Member Posts: 1 New User
I own an Acer PC and I just want to know which size of case fan I should get so that it will fit the back panel. 

Thank you.

Best Answer

  • StevenGen
    StevenGen ACE Posts: 12,747 Trailblazer
    edited April 2021 Answer ✓
    I own an Acer PC and I just want to know which size of case fan I should get so that it will fit the back panel. 

    Thank you.

    There is no specific case fan specified for your GX-785 desktop by Acer but, measure the screw holes at the back case and take the dimensions from there it should be a 120mm case fan which is the most common, also, see the mainboard diagram below and look at pin #15 FANC2 that is the "System fan connector plug" which is a for a case fan of a type "3-pin fan plug" as that is what you have to buy as a 4 pin plug fan will not fit and you will have to modify it and/or get an adaptor from a 3pin to a 4 pin plug. Good luck and hope this helps you, as there are lots of mods that can improve your GX-785's CPU temps and improve the GX-785 performance.

    General Fan Notes: as a rule a 120mm case fans tend to be the most popular size of fans in modern PC cases, but you will find many sizes such as 80mm, 92mm, 140mm, 200mm and beyond. Fan size is closely related to airflow, in that larger fans will push more air than smaller ones while running at the same RPM. What this means is that larger fans can spin much more slowly than smaller ones, while still pushing the same amount of air, which is great for lowering noise levels. The one drawback from larger fans is with compatibility, since many cases are only setup for support of 120mm and 140mm fans.

    This is the GX-785 mobo and descriptions of all its parts:-




Answers

  • StevenGen
    StevenGen ACE Posts: 12,747 Trailblazer
    edited April 2021 Answer ✓
    I own an Acer PC and I just want to know which size of case fan I should get so that it will fit the back panel. 

    Thank you.

    There is no specific case fan specified for your GX-785 desktop by Acer but, measure the screw holes at the back case and take the dimensions from there it should be a 120mm case fan which is the most common, also, see the mainboard diagram below and look at pin #15 FANC2 that is the "System fan connector plug" which is a for a case fan of a type "3-pin fan plug" as that is what you have to buy as a 4 pin plug fan will not fit and you will have to modify it and/or get an adaptor from a 3pin to a 4 pin plug. Good luck and hope this helps you, as there are lots of mods that can improve your GX-785's CPU temps and improve the GX-785 performance.

    General Fan Notes: as a rule a 120mm case fans tend to be the most popular size of fans in modern PC cases, but you will find many sizes such as 80mm, 92mm, 140mm, 200mm and beyond. Fan size is closely related to airflow, in that larger fans will push more air than smaller ones while running at the same RPM. What this means is that larger fans can spin much more slowly than smaller ones, while still pushing the same amount of air, which is great for lowering noise levels. The one drawback from larger fans is with compatibility, since many cases are only setup for support of 120mm and 140mm fans.

    This is the GX-785 mobo and descriptions of all its parts:-




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