Associate
- Joined
- 11 Apr 2009
- Posts
- 10
does any 1 know if a 240mm or a 200x200mm rad would be ok to cool these hot beasts
cooling gtx 480 sli
- Thread starter imtoyoungtodie
- Start date
Soldato
- Joined
- 11 Dec 2005
- Posts
- 11,364
- Location
- Cheshire
I run a i7 970 and 2 GTX 480 on a SR-1 360 Rad.
The 970 runs at 4GHz and the cards both run at 800MHz.
So a 240mm Rad would be fine
Soldato
- Joined
- 11 Dec 2005
- Posts
- 11,364
- Location
- Cheshire
45-55C on the 480's at full load (folding) at 800MHz and 55-60C for the 970 at 4GHz.
Similar results here. Finished my new rig last night.
i7 950 at 4Ghz maxes out at 59C and my two gtx470's running at 830 max out at 53C
This is all on one XPSC triple rad.
Soldato
- Joined
- 11 Dec 2005
- Posts
- 11,364
- Location
- Cheshire
If you don't believe me then yeah of course I can.
These temps aren't measured under prime or furmark by the way. They are fairly useless programs to me unless I am troubleshooting.
I never really understand when people say "oo I get 33C load temps in furmark ooo" its just abit pointless. Don't get me wrong furmark is useful for testing an OC or to troubleshoot and possible fault (artifacting) but I wouldn't just run my cards on FurMark for the sake of it. Same goes for Prime.
I'd rather put my hardware under stress doing something useful (folding).
Associate
- Joined
- 22 Sep 2010
- Posts
- 306
Wow... Are you guys saying that you are cooling 2 480s and your CPU with just one tripple rad?
I was under the impression that I would need a lot more than a tripple to do that lot, so have been massively put off of doing water.
And specs / pics of your build please?
I was under the impression that I would need a lot more than a tripple to do that lot, so have been massively put off of doing water.
And specs / pics of your build please?
the reason i ask for screens:
i like to oc my cpu and my video cards a lot , and on air my gtx can past 860 mhz 2020 1710. and i get freez becose of high temp. plus like the mate from the prev post all my frieds told that i need a separate loop for my gtx 480 sli.
so i realy don't want to spend 300 for a new loop plus i dont have space for a 360 rad. if i can put my 2 gtx 480 on the same loop ( i got a 360 rad 60 mm thick 3 fans at 3000 rpm a ddc pump 18 w )
Last edited:
Will be posting a build logg soon, it took me longer than I thought to rebuild it all.
It's all down to matching your watercooling system. I have a Swiftech XT cpu block, ek full cover gpu blocks, a laing d5 pump with v2 head, a XSPC RX 360 rad with 3 San Ace 38mm fans.
My loop is very unrestrictive and the 3 high pressure fans do a very good job of cooling the rad.
Yes, a dual loop system or additional radiators would drop the temperature down much further but for what gain? Less fans or slower ones for an even quieter system when idling? I must admit, I could switch my fans off and run passively with my q9650 and 5850 plus 9800GTX+ on the same loop when surfing, I certainly can;t do that anymore with the new rig.
When I need to do a silly overclock benchmark run I can up the fans to 12v and you could probably balance a cat in the windtunnel it makes above my case and keeps everything cool
However, I doubt you would get much of a better overclock than 860 as my gtx470 (i know they are not 480s) max out at 850 under water and 53C. They can run at 900 but there are graphical glitches in Vantage and only good for a suicide run, not 24/7 usuage.
Even with an i7 and two gtx480's on a single 360 rad, your 480's temps are not going to get anywhere near your aircooled temps. Fact.
Last edited:
Associate
- Joined
- 22 Sep 2010
- Posts
- 306
Nice... They do quad rads, so I may actually be interested now. Quad rads with some Noctua's on.
Have the winter months coming up so will be rained in and stuck at home more... maybe time for a new project?!
Have the winter months coming up so will be rained in and stuck at home more... maybe time for a new project?!
Have a look at the new TFC Admiral. If they do what they claim to do when out later this month, they are going to be cracking rads. Perhaps a triple one of them giving you the same cooling as the best quad does now.
There's a thread going on them on here. I might even be tempted to replace my triple rad with one.
Soldato
- Joined
- 1 Apr 2010
- Posts
- 3,034
I have my 480's on a quad rad and my cpu on a separate loop. If you want a silent set up then a dual 120 rad wont be enough to cool 2 x 480's.
2 x 480's on full load when overclocked use more than 600w and for this type of heat load you would be best off using a quad or triple rad if you want a silent setup. If you are not bothered about noise levels then you wont need as much rad.
These charts will give you an idea on what a triple and quad rad would cool when paired with different speed fans.
Triple rad - Thermochil PA120
Quad Rad - Black Ice 480GTX
The same question was asked on the xs forum, have a search in the liquid cooled section to see more answers.
2 x 480's on full load when overclocked use more than 600w and for this type of heat load you would be best off using a quad or triple rad if you want a silent setup. If you are not bothered about noise levels then you wont need as much rad.
These charts will give you an idea on what a triple and quad rad would cool when paired with different speed fans.
Triple rad - Thermochil PA120
Quad Rad - Black Ice 480GTX
The same question was asked on the xs forum, have a search in the liquid cooled section to see more answers.
- Joined
- 11 Apr 2009
- Posts
- 10
thanks for the help will lookin to it a bit more problem is i have a antec 900 2 case and the 120.2 rad uses up just over six front bays but i might do the slim dvd rom mod ive seen can has any 1 got this case or 1200 water cooled with rad in the front ?
I have my 480's on a quad rad and my cpu on a separate loop. If you want a silent set up then a dual 120 rad wont be enough to cool 2 x 480's.
2 x 480's on full load when overclocked use more than 600w and for this type of heat load you would be best off using a quad or triple rad if you want a silent setup. If you are not bothered about noise levels then you wont need as much rad.
These charts will give you an idea on what a triple and quad rad would cool when paired with different speed fans.
Triple rad - Thermochil PA120
Quad Rad - Black Ice 480GTX
The same question was asked on the xs forum, have a search in the liquid cooled section to see more answers.
Yes but how does the water/air delta translate into actual gtx480 temps? I agree there is 600W of heat to disapate and on that graph with a triple rad and the yate loons at a lowly 1000rpm the delta would be 17 degrees. How does that equate to the temp of the gpu? Does it mean it would be 17 degrees above it's idle temp or is it more complicated than that? (I;m sure it is btw
)But from what I have read a delta of 15 to 20 degrees is more than sufficient for gpu cooling. But my point really is, does it matter under watercooling if your gtx480's max out at 70C? That's at least 20C better than air and a damn sight quieter?
Soldato
- Joined
- 1 Apr 2010
- Posts
- 3,034
A 17c delta will be 17c added to your overall temps. You can cool anything with water but it all comes down to how silent and cool you want your loop to be. Asking a dual 120mm rad to cool 600w is just not going to happen silently (fans @ 800rpm or less). Thats 300w per fan of heat to deal with. A triple or quad rad is a better choice if someone is looking for a silent loop.
I would also say that once you start clocking and over volting the 480's the wattage it uses rises fairly sharply. This of course raises the temps a fair whack. I would love to know what my 480's are pulling in terms of watts once clocked to 890Mhz. I am guessing its over 600w.
I would also say that once you start clocking and over volting the 480's the wattage it uses rises fairly sharply. This of course raises the temps a fair whack. I would love to know what my 480's are pulling in terms of watts once clocked to 890Mhz. I am guessing its over 600w.
Last edited:
so it's as simple as that then? So if your ambient temp is 20C and you have a delta of 20 then your 480 will only hit 40c?
There must be more to it as a delta of 20C in the water to air does not mean the gpu isn't hotter.
My triple rad can keep my 470's at 850 to 53C or a rise of 33C over air temp yet my radiator is almost cold to the touch and so is the air coming from it leading me to beleive I have quite a low delta, eg my water temp is less than 30C and my delta is less than 10.
So there must be a difference between water temp and gpu yes?
But I still say, what is wrong with a pair of watercooled 480's running at 70C? What do yours run at? Is that needed and does that low temp give your better overclocks? In my case, no. There already is a poster on here with a higher stable core clock speed but it's unstable once he hits 92C. At 70C he would be fine all day long.
And as I found with my 5850, I got an extra 10Mhz from watercooling it for the cost of a £70 block. Okay I got silence as I could run with no fans but it the max temp of 43C never got me a better overclock on the 5850.
There must be more to it as a delta of 20C in the water to air does not mean the gpu isn't hotter.
My triple rad can keep my 470's at 850 to 53C or a rise of 33C over air temp yet my radiator is almost cold to the touch and so is the air coming from it leading me to beleive I have quite a low delta, eg my water temp is less than 30C and my delta is less than 10.
So there must be a difference between water temp and gpu yes?
But I still say, what is wrong with a pair of watercooled 480's running at 70C? What do yours run at? Is that needed and does that low temp give your better overclocks? In my case, no. There already is a poster on here with a higher stable core clock speed but it's unstable once he hits 92C. At 70C he would be fine all day long.
And as I found with my 5850, I got an extra 10Mhz from watercooling it for the cost of a £70 block. Okay I got silence as I could run with no fans but it the max temp of 43C never got me a better overclock on the 5850.
Last edited:
Soldato
- Joined
- 1 Apr 2010
- Posts
- 3,034
No, you have to add the temp of the gpu to that. The delta figure helps you work out your water temps. Add the delta to the ambient and thats the temp of your water. The charts I posted basically give you a guide to how your loop will perform with a certain heat load. Other things like rad positioning, pump etc will also effect your temps. Baring in mind these tests are done on an open test bench.
70c is fine but not great temps for water. As you can see from the graph below a dual 120m rad wont be able to cool 2 x 480's to 70c with silent fans. A triple rad however would which is where I am guessing you got the 70c figure (1000rpm fans). Even at 70c throw in some overvolting and a hot summers day and that figure could jump well over 10c very easily.
Dual 120mm rad - XSPC RS240
With regards to my setup, I was running 1 x 480 (890/1780/4140) on a PA120.3 with Gentle Typhoons 1150 rpm, gpu temps with afterburner after 45min were in the low 60's. Ambient temp was around 24c. Temps in rose proportionally in the summer as room temps were in the low 30's ie nearly 10c hotter.
I then added another 480 and swapped out the rad for a quad and changed the fans for GT 1450. Temps are now about the same on max load as they were previously. The extra fan speed and rad size helped balance out the heat dump. I use a BigNG to control all the fans and monitor temps.
At the end of the day you can cool anything with water it just depends on what sort of temps you want and how silent you want your loop. The more silent and cool running you want your loop the more rad space is needed.
Last edited:
But how do you go from your water temp to your gpu temp which is important?
I will be adding a water thermeter tomorrow so can perhaps answer this myself but I would love to know now.
And yes 70C on water is not good but it works and is 20+ cooler than air cooler so how cares so long as your fans are quiet?
You say from the delta graph that a double rad won't be able to keep two 480's at 70c with silent fans but how can you tell?
From that graph I reckon the water delta will be 25C so about 45C if ambient is 20C. How do you know that 45C of water is not enough to keep the 480's below 70?
I will be adding a water thermeter tomorrow so can perhaps answer this myself but I would love to know now.
And yes 70C on water is not good but it works and is 20+ cooler than air cooler so how cares so long as your fans are quiet?
You say from the delta graph that a double rad won't be able to keep two 480's at 70c with silent fans but how can you tell?
From that graph I reckon the water delta will be 25C so about 45C if ambient is 20C. How do you know that 45C of water is not enough to keep the 480's below 70?