More rad area needed, advice?

Supa Koopa

Supa Koopa

Supa Koopa

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I've recently setup a custom loop and was really happy with the performance until I stupidly added another 780ti in to it. I'm now running the fans faster than I would like so there is excess noise to try and keep the temps down.

Now I may be worrying over nothing but during gaming the water temp is rising to around 43c which is a bit too high for my liking. I could tell the wife to turn the heating off but I doubt that is going to happen. GPU's hit 50c and cpu 60-70c depending on game. Benching gets things a little warmer, but I'm not as worried about that.

So would changing the front 280 x 45mm rad to a 60 or 80 (if it would fit) and then push/pull make much of a difference at all? I'd like to get it to around 10c delta. The room is anywhere from 23 to 27, so I'm looking at a 5 degree drop maybe. Mmm! Ambitious. :)

Second choice which I'm not overly keen on, but am leaning towards, is fitting an external rad. A 240 or 360 would obviously make much more of a difference, but then will I run in to fitting and plumbing issues and will the single d5 cut it?

Case is a Corsair 750D
Alphacool 360x45 in the roof with 3 x sp120
Alphacool 280x45 in the front with 2 x Noctua Af14pwm's (I think thats the model number)
EK D5 and 140 res combo
EK Supremecy evo
EK 780ti blocks x2 with an FC bridge connecting them
Primochill 10/13 tubing.

thanks for any help.
 
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Forgive me for my question but does water temp make much if any difference?
I thought as long as the components are cooled, it doesn't matter.
 
As a stop-gap until you can get things changed try running the 140's at full or higher speed, same with the other fans, that should lower temps albeit increase noise (but it sounds like you're worried about the temps).


Jony27 said:
Forgive me for my question but does water temp make much if any difference?
I thought as long as the components are cooled, it doesn't matter.
Click to expand...

Components don't like being over a certain temp, most pumps recommend no more than 50c and most tubing up to 60ish.
 
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To be honest the noise is the problem. The SP120 at anything over 1000 rpm develop a droning noise and the 140's become too loud. This has little effect on the temps but loads on my patience.

At 40 degrees the tubing becomes quite flexible and everything is noticebly warm. 50c on a pump as a maximum is not something I'd like to get close to. If the room is warm and I've been playing for a while I can see the water temp getting to 45c easily, this is just too close for my comfort. I'd like to get it below 40 but with a nice noise level. I went for water to get rid of the noise of gpu coolers at full tilt.

I need more rads but the case won't allow it internally. I think 5-600 watts of heat is too much for a 360 and 280 without the fans running at 2000rpm. :)
 
You said your wife doesn't want the heating turned off, is she in the same room as the PC? if not you could try turning down/off just that radiator or opening a window.

If you haven't already, temporerily remove the fan cover from the front of the 750D to improve airflow.

Not sure what else to recommend as a temp fix, but upgrading one of the rads like you plan would help, Nemesis GTX and XSPC V3's are both great atm.
 
My room is the warmest in the house for some reason, I think all the pipes run under the floor. It also won't help much when the warmer weather arrives. Thanks for all the advice for temp fixes but I'm after something more permanent.

Tried removing the front cover and it helps a degree maybe.

That's the thing I'm not sure if just changing the front rad will make any difference at all. I don't think there's enough room to put a thicker rad in the roof, so it looks like I'm going to have to hang one off the back. I should've bought a Primo. :(

Has anyone fitted a rad externally? If so what did you use and how did you wire the fans up?
 
Put a massive res in, i am a fan of more water, the system need to run hot for longer to heat up more water. unless your stress testing 24/7 adding more fluid would help.

I do run an EK 540 out side mt case now days too

Your GPU's hitting 50 is fine, the CPU hitting 70 i would not be happy with but its still fine. can we see your loop set up.
 
I could do but I don't have a foto pix whatyamacallit.com site so I've no way of attaching the poor photo I have.

No room for a bigger res as I still use one of the 3.5 cages in the floor.

How do you have your 540 setup, attached or free standing? How do you run the power to the fans and how's your tubing setup?

When I had 1 gpu it was always 1 degree higher than the water temp, it's since I've gone sli it's increased by quite a bit.
 
i use a 600mm pwm extension for the fans and just zip in to the tubing. the rad is free standing with some little stands i made from plexi.

my set up is right now is.
300mm res > Pump > 360 rad > gpu > gpu > cpu > big rad > res.
Case is NZXT H440.


What CPU / Overclock / voltage , are you running. if dropping off a little would let you drop your V core it could be the answer to all your problems, depending on the drop your would need to get a lower v core, and how are you over clocking, bios or an OC tool.
BUT to be honest your temps or nothing to really panic about, like i said 50c on the GPU's is nothing. the CPU hitting 70c nothing to worry about but i would be happier with it a little lower if it was me.
 
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I'm not panicking over the gpu or cpu temps, just not happy with the water temp as it seems a bit high.

I'm running a I5 4670k at 4.5 on a Maximus Hero VI. I just let the board handle the overclock (auto settings) with a core of 1.2v although it spikes to 1.3 under very heavy load.. It seems to cope well enough.

It's all in my head, but you know when you fixate on something it's hard to let it go. You have 900mm of rad space compared to my 640 which will make a massive difference I think. I just want the water temp lower by 5-10 degrees and everything else will follow. Only problem is I need more rad space to do that. I'll have to look tonight to see how I'm going to do it.
 
Yeah 43 is definitely higher than I would like to see!

You could add another rad out back, but with all that rad space you have already it should surely be lower tempwise? Double check all OCs and fan profiles
 
What are you using to read the V core? programs tend to be a bid dodge.

you should try setting the V core in bios. you say 1.3v but it could be more.
i would start at 1.3 in bios and work your way down. stress testing with anything other than prime
you would be shocked at what a difference 0.05 can make to temps, you may even find your stable at a higher volt then you know why your having temp problems
 
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Just reading the volts in Asus suite. I only set 1.2 but in AIDA it shows it spiking to 1.3.

I clocked everything back yesterday 4.2 on the cpu and 1,100 (no overclock just boost) on the gpu's. temps ranged from 38 to 42 depending on the game with the front cover off and the fans around 1,000rpm. It helped a bit so may have to leave it as money is running away a bit.

Cheapest option was to go push/pull on a thicker rad in the front but it may not make much difference. Other option I considered last night was to pull the lot and fit it in to a Primo with 2 or 3 new rads....! Note to self - Stop spending money. :)
 
Not cheap, but cheaper than a Primo + rads is a Mo-Ra3 with four, 180mm/700rpm phobya fans. I use that combo myself and it'd tick your temp/noise boxes very nicely.
Personally, I think they look pretty good too as external rads go.

Failing that, just adding an external 240-360 would sort you out well.

BUT, saying all that, I don't think you have anything to worry about as it is tbh and I'd just leave it alone.

almighty15 said:
My system with SLI GTX970's and a 5Ghz 3770k puts my water to mid 30's with fans at 4.9 volts.

Silence is bliss.
Click to expand...

That's incredibly useful information.
 
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