Go Back   Hardware Canucks > HARDWARE > Power Supplies

    
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old December 19, 2009, 10:00 AM
MVP
 
Join Date: Dec 2009
Posts: 299

My System Specs

Default top mount- bottom mount - does it make a difference?

hi guys, I'm possibly gonna be buy a case with a bottom mount for psu and i'm wondering if there is any difference? are some power supplies meant only to be top mounted or could i run into any trouble with wire lenth's with a bottom mount case?

i would assume its all the same but better to be sure
Reply With Quote
  #2 (permalink)  
Old December 19, 2009, 10:53 AM
Andy's Avatar
Allstar
 
Join Date: Sep 2008
Location: Taichung / Toronto
Posts: 657

My System Specs

Default

Quote:
Originally Posted by johnnyblazzwa View Post
hi guys, I'm possibly gonna be buy a case with a bottom mount for psu and i'm wondering if there is any difference? are some power supplies meant only to be top mounted or could i run into any trouble with wire lenth's with a bottom mount case?

i would assume its all the same but better to be sure
You could run into length issues, but if you are buying mainstream stuff, I wouldn't worry about it. Bottom mounts have pretty much become the standard for gaming cases, and PSU's.
__________________
SAGER 5165 - Matte Screen (1920x1080) - i7-2630QM - nVidia 555M - 8Gb DDR3 - 120Gb Corsair Force GT SSD - 500Gb Momentus XT - Intel® 6300
Reply With Quote
  #3 (permalink)  
Old December 19, 2009, 12:14 PM
Caldezar's Avatar
Hall Of Fame
F@H
 
Join Date: Aug 2008
Location: Burnaby
Posts: 1,705
Default

Bottom mounts are more about cooling than anything else. With an intake vent at the bottom of the case, your PSU gets fresh air from outside the case and exhausts it out the back immediately. Rather than grabbing all the warm air from inside your case. However, you'll likely want to make sure the case also has an exhaust fan either in the back or the top to compensate for the lack of the PSU removing hot air.
Reply With Quote
  #4 (permalink)  
Old December 19, 2009, 12:19 PM
MVP
 
Join Date: Dec 2009
Posts: 299

My System Specs

Default

awesome, thanks guys
Reply With Quote
  #5 (permalink)  
Old December 19, 2009, 01:07 PM
Raserei408's Avatar
MVP
 
Join Date: Dec 2009
Location: South of the border
Posts: 495
Default

Quote:
Originally Posted by Caldezar View Post
Bottom mounts are more about cooling than anything else. With an intake vent at the bottom of the case, your PSU gets fresh air from outside the case and exhausts it out the back immediately. Rather than grabbing all the warm air from inside your case.
I disagree, since if that were true every case with a bottom-mounted PSU would have vents on the bottom (which they don't, case in point Antec 900) and it would only be beneficial if PSUs had a a fan on the top or bottom, not on the front. Though this is also true, there's another reason that hasn't been addressed; a PSU is typically the heaviest component of a PC, and with it on the top, the case becomes top-heavy. Bottom-mounted PSUs make the case bottom-heavy and a fair bit more stable. Also, though this is case dependent, if a case has a bottom-mounted PSU it also has the potential for a top-mounted fan (either by the manufacturers placing one there or via modding).

Though this is considered to be the best location for a PSU (hence the industry shift toward bottom-mounted PSUs) there is a distinct disadvantage; cables may not be long enough to reach all the connectors, especially the ATX and CPU power connections. Unless the case is huge it's usually not an issue, and if worse comes to worse, there are always cable-extenders available.
__________________
"If dancing is sure to result in failure then you must dance anyway."
Lo Mein said that, and I think he knows a little more about dancing than I do pal, because he invented it! Then he perfected it so that no man could best him in the club of honor.
Then he used his prize money to buy two of every whore on Earth. Then he herded them all onto a boat, then they all beat the crap out of every single one of him.
Reply With Quote
  #6 (permalink)  
Old December 20, 2009, 08:13 PM
0o0 0o0 is offline
Banned
F@H
 
Join Date: Oct 2009
Location: Toronto ON
Posts: 855

My System Specs

Default

Quote:
Originally Posted by Raserei408 View Post
I disagree, since if that were true every case with a bottom-mounted PSU would have vents on the bottom (which they don't, case in point Antec 900) and it would only be beneficial if PSUs had a a fan on the top or bottom, not on the front. Though this is also true, there's another reason that hasn't been addressed; a PSU is typically the heaviest component of a PC, and with it on the top, the case becomes top-heavy. Bottom-mounted PSUs make the case bottom-heavy and a fair bit more stable. Also, though this is case dependent, if a case has a bottom-mounted PSU it also has the potential for a top-mounted fan (either by the manufacturers placing one there or via modding).

Though this is considered to be the best location for a PSU (hence the industry shift toward bottom-mounted PSUs) there is a distinct disadvantage; cables may not be long enough to reach all the connectors, especially the ATX and CPU power connections. Unless the case is huge it's usually not an issue, and if worse comes to worse, there are always cable-extenders available.
I didn't really like antec 900 anyways... well, I wasn't around when it was first released (I was like 12 yrs old), but if I was, I may have appreciated it's design more. All decent modern psu's can reach from the bottom. Only the old/crappy cases and psu's don't have a bottom mount (or in the case of the antec 900, don't have a bottom vent) or their cables aren't long enough to reach. Take any modern (2008 or older should be right) decent 'mainstream' (non-oem crap) and they will be 100% compatible with bottom mount and bottom vents.
Reply With Quote
Reply


Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Bottom mount PSU cable lengths Bond007 Cases 6 November 23, 2009 11:36 AM
Bottom mount PSU cable length Bond007 Power Supplies 4 November 20, 2009 11:21 AM
Highspeed bottom mount to WC topmount mod sswilson Case Mods, Worklog & Gallery 19 April 11, 2009 10:41 AM
Top mount radiator - what would I need? JayDee Water Cooling 22 July 17, 2007 06:21 AM