Ambient temps with Tri SLi

Silent_Scone

Silent_Scone

Silent_Scone

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Joined
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Hi all,

I'm not sure there is a simple answer to this but I'll ask anyway.

I've recently moved into the 900D and put the following in it. Please note that this is all a stock in the scenario I'm describing too -
  • 4960x and 780Ti Tri SLI all on water.
  • XSPC 480mm exhausting at top of case
  • XSPC 480mm in take at bottom of case
  • Black Ice 240mm intake at bottom of case (PSU side)
  • Black Ice 240mm intake at front of case
  • Standard Corsair rear exhaust fan.

Water idle temps are between 18-28c depending on room temperature, load temperature rarely exceeds 40c. Now I think this is quite acceptable for three Ti's under full load, however the ambient case temps seem to be very high, I've yet to put a temperature sensor in, got the bits coming tomorrow. The air coming out of the top of the case seems extremely warm.


The heat being generated by the GPUS when playing intensive games bring the GPUs to around 45-55c. This is all very nice, except all the ambient heat is being left to float around and suck out the top, bringing CPU temps up a notch too. Is there a better way of managing this? e.g would it be better to have another radiator as an exhaust?

I'm tempted to cut into the 900D window to fit a 180mm fan :)

Any thoughts welcome!


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Just a thought but is the top rad hot? Wondering if it is ambient or more the heat from the rad being expelled.

I believe you've got it correct with rear and top as exhaust and the other two intake. Only other option would be to increase the speed of the exhaust fans to create "negative pressure".

In comparison I've got two 7970s and a 3820 and the air coming out my top rad is also rather warm.
 
I'd either try exhaust on the 480 in bottom, then air would flow through the 240 and out via the 480.

Or maybe ditch the 240 in the front, to allow fresh cooler air in.
 
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Mynight said:
Just a thought but is the top rad hot? Wondering if it is ambient or more the heat from the rad being expelled.

I believe you've got it correct with rear and top as exhaust and the other two intake. Only other option would be to increase the speed of the exhaust fans to create "negative pressure".

In comparison I've got two 7970s and a 3820 and the air coming out my top rad is also rather warm.
Click to expand...



Hi, air passing out of the top rad is indeed very warm but the case temps aren't all that amazing either! I'll know for sure when I put the probe in the right place tomorrow.

Thanks though, was just wondering if there was a more efficient flow in this case. I've got two panels so I don't mind cutting into the scratched window to fit a side intake even if I **** it up :D.

Nickolp1974 said:
I'd either try exhaust on the 480 in bottom, then air would flow through the 240 and out via the 480.

Or maybe ditch the 240 in the front, to allow fresh cooler air in.
Click to expand...


Cheers Nick, might be worth a shot. Although not sure on ditching a rad! Don't really want the water temps getting much higher, although it might even itself out with the cooler air inside :)
 
I would quite like to see a side intake on a 900d. Maybe 300mm fan? :D

I only have rads on top and bottom. Unfortunatly due to you having a rad at the front as well you're essentially pre warming the air before it gets into the case.

Edit: just saw nickolp say pretty much the same thing sorry.
 
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Have you got a spare two fans? Just wondering if you do push pull on the front it might increase the airflow (won't affect rad cooling too much but I'm sure you know that). Might be enough to get some more cold air in or at least increase the volume of air coming in.

I think nickolp idea about exhaust on the bottom 480mm could be a very good idea :)

I'm also looking for a cool (no pun) 300mm fan now :D

Edit: found one :D

http://m.ebay.com/itm/170875539584 (1550cfm!!! :D)

Ebays links are ok when not computer kit right?
 
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i personally decided against front rad (though i did want to max rad it) because i noticed how toasty full rad cases get. Now i just have high airflow fans in the front to try to get some fresh air in there. even still things get toasty inside
 
Do this
. I'd either try exhaust on the 480 in bottom, then air would flow through the 240 and out via the 480
Click to expand...

And this

Might also be worth turning rear fan round, to pull cooler air over the mobo

Would make quite a bit of difference
 
Mynight said:
Have you got a spare two fans? Just wondering if you do push pull on the front it might increase the airflow (won't affect rad cooling too much but I'm sure you know that). Might be enough to get some more cold air in or at least increase the volume of air coming in.

I think nickolp idea about exhaust on the bottom 480mm could be a very good idea :)

I'm also looking for a cool (no pun) 300mm fan now :D

Edit: found one :D

http://m.ebay.com/itm/170875539584 (1550cfm!!! :D)

Ebays links are ok when not computer kit right?
Click to expand...


lol that's crazy! Something a little more sensible I think ;)

Ragnahex said:
i personally decided against front rad (though i did want to max rad it) because i noticed how toasty full rad cases get. Now i just have high airflow fans in the front to try to get some fresh air in there. even still things get toasty inside
Click to expand...

Yeah, it was a last minute choice but I overlooked this!

Nickolp1974 said:
Do this


And this

Might also be worth turning rear fan round, to pull cooler air over the mobo

Would make quite a bit of difference
Click to expand...

Hmm, might be an idea too : )
 
I've got the following setup:

Bottom

480 pulling air in, 240 sitting opposite exhausting & the psu fan exhausting

Midplate installed to try and block any heat transferring into the main compartment case

Top 480 rad exhausting, rear 120mm intake... no front rad so just 3 case fans intake (drive cages removed)

Case temperatures never seem to go much above ambient room temp, did a bit of airflow testing with my electronic cigarette, seems to generally work
 
Unfortunately I discovered a long time ago that no matter what you've got, you'll always want bigger/better :). I'm desperately trying to make do at the moment :D. It's an awesome case TBH.

Think maybe something like the Antec Tri Cool 'Big Boy' 200mm sounds good for a side intake :)
 
Ragnahex said:
this is going to sound crazy but after having this case a bit... i keep thinking i could do with more room.....
Click to expand...

lol I thought the same when I was putting my loop together.. The basement of a 900D gets awfully tight when you've got a pair of SR-1's with fans in there (to the point I was thinking of changing out the radiators for something a bit thinner)
 
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