PSU slot on bottom instead of top

w0lfking · 10-23-2008, 07:29 PM

For the Antec 900 and other cases I realized the PSU goes underneath the motherboards instead of ontop... Does this work with any size of PSU as size tends to increase once u get around 1000W... Mine will only be max 800W. Does the location of the PSU really change the build steps??? I'm only concerned.

**manic** · 10-23-2008, 07:32 PM

Any size will fit, I built one with a 1250watt psu.

w0lfking · 10-23-2008, 07:33 PM

But mine is smaller its only 800W will it work? Technically all the cables would be backward compared to having the PSU on top... right?

**wrench97** · 10-23-2008, 07:55 PM

They run up instead of down if that's what you mean?

**manic** · 10-23-2008, 07:56 PM

It will work. You can turn the psu upside down, which I tried but it
was ackward, so I turned it right side up. Lotta good that fan does
you sitting on the bottom of the case, oh well. It will work though.
I recommend setting the pc up a little from the surface you set it on
so you get some air under the case. Giving that fan on the bottom
of the psu some room to ventilate. I really like the looks of that case
but I would not recommend it to anyone. Just dont like the psu on the
bottom with the heat rising up under the video cards. Ive ranted about
that case before. I like the look but not the function.

**magnethead** · 10-24-2008, 10:07 AM

Why would you have the fan facing the floor? You're just stalling the air.

As far as the heat deal, as I understand it on my toughpower, the 140mm fan intakes, and the air goes out the back of the tower. The only thing I didn't like is that they have the wires come out on the mb tray side of the PSU for a top mount, it makes them come out next to the removable door in a bottom mount. But if you buy a modular, that won't be a problem.

w0lfking · 10-25-2008, 11:43 AM

K thanks for ur helps.

**linderman** · 10-25-2008, 02:12 PM

yes the fan on the power supply is for intake air ......... it should be facing the motherboard if possible

the good thing about the antec 900 that is doesnt get credit for ........ it keeps your psu from frying

heat rises ....... so when the psu sits on top ......... its getting ALL the blast

10-23-2008, 07:29 PM	#1 (permalink)
w0lfking Registered User Join Date: Oct 2008 Posts: 8 OS: Windows Vista	PSU slot on bottom instead of top For the Antec 900 and other cases I realized the PSU goes underneath the motherboards instead of ontop... Does this work with any size of PSU as size tends to increase once u get around 1000W... Mine will only be max 800W. Does the location of the PSU really change the build steps??? I'm only concerned.

10-23-2008, 07:32 PM	#2 (permalink)
manic Mod Hardware Team Join Date: Aug 2005 Location: Florida Posts: 5,249 OS: xp	Re: PSU slot on bottom instead of top Any size will fit, I built one with a 1250watt psu. __________________

10-23-2008, 07:33 PM	#3 (permalink)
w0lfking Registered User Join Date: Oct 2008 Posts: 8 OS: Windows Vista	Re: PSU slot on bottom instead of top But mine is smaller its only 800W will it work? Technically all the cables would be backward compared to having the PSU on top... right?

10-23-2008, 07:55 PM	#4 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,689 OS: Win7	Re: PSU slot on bottom instead of top They run up instead of down if that's what you mean? __________________ Power Supply and Selection

10-23-2008, 07:56 PM	#5 (permalink)
manic Mod Hardware Team Join Date: Aug 2005 Location: Florida Posts: 5,249 OS: xp	Re: PSU slot on bottom instead of top It will work. You can turn the psu upside down, which I tried but it was ackward, so I turned it right side up. Lotta good that fan does you sitting on the bottom of the case, oh well. It will work though. I recommend setting the pc up a little from the surface you set it on so you get some air under the case. Giving that fan on the bottom of the psu some room to ventilate. I really like the looks of that case but I would not recommend it to anyone. Just dont like the psu on the bottom with the heat rising up under the video cards. Ive ranted about that case before. I like the look but not the function. __________________

10-24-2008, 10:07 AM	#6 (permalink)
magnethead Registered User Join Date: Mar 2006 Location: Texas, USA Posts: 3,570 OS: Vista ultimate 32bit My System Blog Entries: 3	Re: PSU slot on bottom instead of top Why would you have the fan facing the floor? You're just stalling the air. As far as the heat deal, as I understand it on my toughpower, the 140mm fan intakes, and the air goes out the back of the tower. The only thing I didn't like is that they have the wires come out on the mb tray side of the PSU for a top mount, it makes them come out next to the removable door in a bottom mount. But if you buy a modular, that won't be a problem. __________________ For proper support: what are you running? graphics, cpu, m/board, ram, PSU brand wattage PCI-E requires 26 amps at 12 volts. That's a 650W PSU. Power Supply Info and Selection . Info on thermal compounds & application . TEST PSU USING MULTI-METER . Bench Testing Your System

10-25-2008, 11:43 AM	#7 (permalink)
w0lfking Registered User Join Date: Oct 2008 Posts: 8 OS: Windows Vista	Re: PSU slot on bottom instead of top K thanks for ur helps.

10-25-2008, 02:12 PM	#8 (permalink)
linderman Moderator, Hardware Team Join Date: May 2005 Posts: 20,441 OS: win 2000 pro / Win XP pro My System	Re: PSU slot on bottom instead of top yes the fan on the power supply is for intake air ......... it should be facing the motherboard if possible the good thing about the antec 900 that is doesnt get credit for ........ it keeps your psu from frying heat rises ....... so when the psu sits on top ......... its getting ALL the blast __________________ I still know nothing and I respect that fact, striving to improve and, along the way, help anyone that comes from the place that I used to be! Power Supply Selection LEARN TO BACK-UP YOUR DATA FREE & EASY YouTube - Runtime Software DriveImage XML tutorial Last edited by linderman; 10-25-2008 at 02:14 PM.