Cooling CPU Cooling for EVGA 780i

Ah okay.

I've been doing some more reading i feel more settled on the H50 with a pair of NF-P14 fans.

As seen at the bottom of the post here - http://www.overclock.net/air-cooling/720137-worlds-best-cooler-corsair-h50-noctua.html

Picture of it - http://www.overclock.net/attachment...t-cooler-corsair-h50-noctua-p250410_08.18.jpg

The Cosmos is a huge case so it should fit this in without a problem.

 

Scan Basket - http://img717.imageshack.us/img717/286/capture3c.jpg

 

Cool! let us know how you get on with it.

 

I will do, thanks for everyones help!

You were all fab when i designed the build, and are still fab now

 

Order made with scan. Delivery due thursday.

Not looking forward to taking the mobo out the case and changing the zalman backplate for the h50 one. Other than changing the backplate it should be simple.

 

So what thermal paste did you decide on useing then ??

I would be interested in how the H50 performs been thinking about one for mine ?

 

H50 comes with shin estu pre applied

http://www.overclock.net/other-cooling-discussions/645241-corsair-h50s-thermal-paste.html

I have AS5 and Shin Estu X23 myself in tubes.

I think I will stick with the stock thermal paste they have applied and see how well it performs. If it works okay i will leave it and save the paste for another time, such as when it needs to be renewed in 12. If the temps are too high I will see about reapplying it myself.

If i do reapply and the Shin Estu doesn't seem great, i will order in some IC Diamond and see if its any good. Although i hope not to have to go that far down the line in reapplying thermal pastes.

 

Finally installed.

Did not all goto plan.

1st, I did not use the akasa PWM connector for the fans. i read about it as been a good idea for push pull. My problem was that NF-P14 fans were not PWM so i have just plugged them directly into the mobo anyway.

2nd, The NF-P14 fans are 140mm with 120mm holes. The cosmos case does not support 140mm fans on the rear of the case. Basically the NF-P14 does not fit.
So to correct this, i moved a Noctua 120mm fan to the rear, and put the NF-P14's and radiator on the top of the case instead.
It actually overlaps the Mobo by 2mm, and missing the resister by no more than 2mm as well. Good job that corner resister was shorter than the others.

Minor issues identified with the H50 were as follows.
The instructions for the 775 were wrong. It stated to put the backplate threads into the wrong holes (1366). So i ignored them and put them in the holes actually marked on the backplate.

The next issue was using the foam tape to hold it inplace. The capactitors to the left of the CPU socket (780i EVGA) have there soldered pins on the other side of the mobo. Right in the way of the foam. As such I secured it using only 1 piece of sticky foam as it would not lie flat with them both attached.


Image Below



Onto the temps.

My CPU has always idled hot from day one. Using CPUID Hardware Monitor, 1.16. Figures are kind of rough, more from memory than anything.

Zalman 9700 (Idle) (Stock, 333x9)
Core 0 - 49
Core 1 - 49
Core 3 - 32
Core 4 - 25


Zalman 9700 (Load) (Stock, 333x9) (orthos)
Core 0 - 64
Core 1 - 64
Core 3 - 50
Core 4 - 53


Zalman 9700 (Load) (Stock, 400x9 (3600MHz)) (orthos) VCore 1.3
Core 0 - 74
Core 1 - 73
Core 3 - 56
Core 4 - 55


Zalman 9700 (Load) (Stock, 400x9 (3600MHz)) (orthos) VCore 1.2
Core 0 - 67
Core 1 - 67
Core 3 - 50
Core 4 - 53


H50 (Idle) (Stock, 333x9)
Core 0 - 46
Core 1 - 46
Core 3 - 31
Core 4 - 25


H50 (Load) (Stock, 333x9)
Core 0 - 50
Core 1 - 50
Core 3 - 32
Core 4 - 25


H50 (Idle) (Stock, 412X9 (3712MHz)) Vcore 1.3
Core 0 - 47
Core 1 - 47
Core 3 - 32
Core 4 - 25


H50 (Load) (Stock, 412X9 (3712MHz)) (Orthos) Vcore 1.3
Core 0 - 61
Core 1 - 61
Core 3 - 41
Core 4 - 45


So it is keeping the temps better than the Zalman, even though my QX9650 has always ran hot on cores 0 and 1.

All fans are set to 100% and it is quieter than my previous Zalman with Scyche 1600 setup. Reason for 100% is so the pump gets full power all the time.

There is no difference in temps if i take the side of the cosmos case off. So airflow is not an issue.