It's on top of a table, so the fans are getting plenty of circulation either way.

Either way is the same really, I would assume vertically it can breathe better, but only every so slightly, nothing that would make a big difference.

So either way, it all comes down to personal preference in your case.

I have mine on its side, and it gets pretty hot after long play sessions, but I don't know if having it vertically would make any type of difference.

I always keep mine on it's side.

But I don't know if there is any real difference.

keeping a console vertical= fail since disc could possibly shake around or console could fall and break

I just keep mine on it's side.  It is safer that way.

There isn't much difference in air circulation between keeping it vertical versus keeping it on it's side. As others have said, it's much safer to keep it on it's side.

I figured as much.  Plus, I have animals that like to knock shit over, so on it's side it stays!

vertical.

and as for the nonsense about the disc.  Well my launch japanese PS2 has been vertical since day one and still works:)

I keep it on it's side......because I'm extremely paranoid that something is going to happen if I have it vertically....like a fly landing on it and knocking it over....or the ceiling fan going so fast that it is literally blown over....you know the most likely stuff.  I don't know if there is a difference performance wise though.

It's built for either way. I keep mine horizontal cuz it's on a narrow stand and if it toppled over I'd be pissed.

on its side

standing up.

Mine is vertical, and I think that the PS3 looks better that way, although I have no idea if the air circulates better.

I don't think it makes much of a difference. Just as long as you give it plenty of room so that air can circulate around it (meaning not in a closed up cabinet/shelf). Personally I keep mine horizontal. I have pets so I won't risk having it vertical because they will knock it down.
 

I would keep it on its side because of the disk tray issue.

Horizontal

I just suspend mine in mid-air from the ceiling.

"I just suspend mine in mid-air from the ceiling."

Mine runs cool as a cucumber regardless.

"keeping a console vertical= fail since disc could possibly shake around or console could fall and break"

"keeping a console vertical= fail since disc could possibly shake around or console could fall and break"

Vertical, the only system that can't handle being vertical is the 360.

"HoNgKoNgPh0oEy said:

"keeping a console vertical= fail since disc could possibly shake around or console could fall and break"

That only happens on 360. I have moved my PS3 around a lot while the disc is running before, nothing happened."

Horizontal, according to some thermal imaging shots. 

http://boardsus.playstation.com/playstation/board/message?board.id=ps3&thread.id=2219120

Truth is, if it was designed to sit horizontally and vertically, chances are it will be just fine either way.

I keep mine Vertical. It saves space on my desk.

Mine's horizontal.  Seems to collect some heat on the bottom after long sessions.  I don't keep mine on its side because I know it'll get knocked over...somehow.

I switch it up. I like having it ethier way on carpet vertical, but on hard surfaces horizontal.

For a while I had mine on its side. Then I moved my ps3 upstairs o its not standing up.

Theres no difference.

I keep mine standing up. I sometimes worry about it being knocked over, but it is close enough to the TV and it's on the floor that no one really goes near it. Plus, I think it looks better.

I have it vertical for now to save space.

Either way it's fine. Mine is on it's side.

true it doesn't matter but I prefer to keep it horizontal as the PS3 is fragile

mines upside down. its the best that way trust me

"mines upside down. its the best that way trust me"

"mines upside down. its the best that way trust me"

"shadows_kill said:

"mines upside down. its the best that way trust me"

hmm....I'll have to try that sometime."

I always have mine standing up, mostly to conserve space.

standing up, it looks cooler.

Side/horizontal for me.

1. Safer and prevents from falling accidentally
2. Idiots won't screw up putting the disk in
3. I read somewhere that horizontal collects less heat

Laying flat makes it look cooler, just maybe not in temperature, HAHAHAHAhaha.....ha.....cough

"nerdboy said:

"shadows_kill said:

"mines upside down. its the best that way trust me"

hmm....I'll have to try that sometime."

I just tried it. Did you know upside down it can play 360 games as well as HDDVD's?"

"shadows_kill said:

"mines upside down. its the best that way trust me"

O_o ...

So is that why you have gotten 6 replacement systems?"

"nerdboy said:

"shadows_kill said:

"mines upside down. its the best that way trust me"

hmm....I'll have to try that sometime."

I just tried it. Did you know upside down it can play 360 games as well as HDDVD's?"

"LiquidPrince said:

"nerdboy said:

"shadows_kill said:

"mines upside down. its the best that way trust me"

hmm....I'll have to try that sometime."

I just tried it. Did you know upside down it can play 360 games as well as HDDVD's?"

who wants hd dvds when we have blu ray :P 360 games :/ well i know i don't want ff 13 on 360 cause of all those disks:P"

"shadows_kill said:

"LiquidPrince said:

"nerdboy said:

"shadows_kill said:

"mines upside down. its the best that way trust me"

hmm....I'll have to try that sometime."

I just tried it. Did you know upside down it can play 360 games as well as HDDVD's?"

who wants hd dvds when we have blu ray :P 360 games :/ well i know i don't want ff 13 on 360 cause of all those disks:P"

Well it's always nice to know that you can....."

Like my sex.

Lying down.

Hopefully with a little Barry White playing and the ceiling fan on...but no cigarettes.

"nerdboy said:

"shadows_kill said:

"LiquidPrince said:

"nerdboy said:

"shadows_kill said:

"mines upside down. its the best that way trust me"

hmm....I'll have to try that sometime."

I just tried it. Did you know upside down it can play 360 games as well as HDDVD's?"

who wants hd dvds when we have blu ray :P 360 games :/ well i know i don't want ff 13 on 360 cause of all those disks:P"

Well it's always nice to know that you can....."

to use all of those disks? plz i would rather watch a oprah for 5 hours straight and still not be gay(i hate her so...)"