Computer Overheating - Bad Order? (Solved)

[Fragg]

I believe my photos are quite self explanatory.

diagram of my computer loop -
https://www.dropbox.com/s/gu7qakmupmsa7br/computer.png?dl=0

idle temps -
https://www.dropbox.com/s/92q40gkzj2kynn1/icue.png?dl=0

I recently added the GPU to my loop for months i ran only CPU. I did not have this problem before.
When gaming my computer now powers off after high loads, i am not sure how to find the cause but i believe it is overheating as on reboot, i quickly check temps and they are high, the pipes to touch are HOT.

I have an open loop EK system. The pump is excellent and all heatsinks are making contact.
Both the CPU and GPU are in the same loop.

idle use = average 33C for both GPU and CPU
med-high use = average 50C for both GPU and CPU
high-very high (AAA Game) = fluctuating 70C - 80C for both GPU and CPU.

I never recorded temperatures before i added the GPU to the loop.

Any advice on restructuring my loop would be appreciated - maybe i need another rad for the top or maybe the order is incorrect.

Thanks

 

[Fragg]

Radiator isn't possibly enough for very hot CPU and such GPU.
Despite of marketing's claims water pipes simply don't make heat disappear magically and it needs to be dissipated into air.

Also do you have proper cooling for GPU VRM?

I am using EK's full GPU waterblock https://www.ekwb.com/shop/ek-fc-r9-290x-dcii-acetal-nickel
Following a chat with EK's support, their 290x waterblock is perfect fit for the 390
I applied all thermal pads to the vrm as per instructions.

A 280 radiator isn't going to give you great temperatures (would have expected better on the GPU though), what fan speed are you running on the radiator fans?

How hot is the tubing, warm (body temp) or hotter?

I have realigned my sensors against the tubing, and will record temperatures tomorrow.
Do you reckon i need another radiator 280 or even a 340 radiator at the top of my case in addition to the 240 at the front?
Or maybe i need to reverse the flow of water or move the position of the 240 radiator.
I am using two of Corsairs 140mm for the intake (i believe they are Air Series, but i cant be sure).

 

[Fragg]

Hi i'd change loop flow round other way as rads going to pump/res id reverse pipes on pump to go to rad then blocks.

You don't say what rad it is???

also what is the pump? if not a D5 has it enough flow/pressure?

The rad is really damn old. I got it on here in 2013 in the OcUK Tech Lab - V8 Watercooling Kit 240 kit.
The pump i changed out recently and is a d5 - EKWB EK-XRES 140 Revo D5 PWM (i changed out the res to bigger one)

Get another 280 in the roof. Go from the GPU to the top rad, then down to the CPU. You will only need to remove one piece of pipe and add two short ones so only two extra fittings and a couple of feet max of pipe.

Initially, the single radiator copes but over time the heat output overwhelms its ability to remove heat so the temps build until the system protects itself by shutting down. Before that point comes, you are likely getting thermal throttling as well.

Add another radiator. You're asking a lot of that 280.

So you both think if i put a big 280/360 rad in the roof of my case then that should solve my problems?
That would be great if it did - easy fix!

 

[Fragg]

A 280 radiator isn't going to give you great temperatures (would have expected better on the GPU though), what fan speed are you running on the radiator fans?

How hot is the tubing, warm (body temp) or hotter?

fans are running at 1060rpm which is the max i can choose on my fan controller.
i have the pump hooked up to the fan controller (not sure if thats a good idea or not) but its set at the max which it estimates is equivalent to 2200rpm

 

[Fragg]

Rad could be a low tech one as many kits use cheapest options? how thick is it?

Also what case is it as can't see anywhere you have stated that way can see what options you can have? Also do you have any pics of install/rad?

Should yes. How thick is the 280? Obviously the thicker the more surface area, so the more heat it can remove from the water. I would get the thickest rad you can afford that will fit in the case.

I had a sketch with my options in a photo in the main post.
My 240mm rad was only 25mm deep. so yes very thin.

I measured the space I have in the top and could fit a 35mm thick 360mm rad at the top with fans below it. So I did that and got it fitted yesterday. It has solved my problem. I get 15 degrees cooler on idle and when I gaming, it hasn't went above 60. So far so good.

I now go from Res > gpu > big rad > cpu > small rad > res

Are you sure the cpu block is setup correctly for the +/-?
From what I can tell better/faster fans and/or more radiator space should solve your problem.

- See the comment just above. Problem solved with an additional but much better radiator on top.

I am not sure which direction my cpu block should be as I lost the notes years ago and I can't find it online. All other components I have made sure are correct.
Anyhow, now that I am getting good temperature I will take it that my cpu block +/- is correct