965 watercooled, need to pick the right upgrade

[Mavhenz]

Hi there!

I already got a watercooling system witch consist of:

mcp-355 pump with xspc top reservoir
Xspc delta v3 block
Xspc chipset block
Koolance mosfet block

Swiftech tripple rad

3/8 in 1/2 out tubing

feser one compression fittings


There is my dilemma:

I have switched from a 720 be to a 965 be, and have seem a good increase in temp!

720 be around 25 idle 35 under load at 3,8 on all core (with 5/16 7/16 tubing)
965 be around 32 idle 44 under load at defaut (3,4 ghz)
(with the 3/8 in tubing)

Will I have better temps if I change the rad for a more ticker one? (like primochill of feser one?)

Does it wort it?

Thx!

[ridney]

changing into a thicker rad is not worth it! i bet you would only get about 2c difference under load

[NKrader]

^bah...
that kind of thinking leads to the use of heatercores..


TFC all the way its beautiful! i love my 480 and plan on getting a 240 aswell!

if ur gona spend money spend it right the first time

[ridney]

do i look like i'm using heatercores???

[Mavhenz]

That the problem, everywhere I go I got different answers!

[Waterlogged]

There's nothing wrong with using heater cores, about the only thing you really lose is the convenience a PC rad offers in mounting fans to it, and it, to the case.

[nlancaster]

That the problem, everywhere I go I got different answers!

And that is because everyone has different opinions.

A thicker rad with equal airflow will probably give better temperatures, but to get the equal airflow you may have to increase the speed of your fans.

Also 44c under load is not a very high temperature.

[ridney]

That the problem, everywhere I go I got different answers!

trust me, i have been there before. the cost of upgrade compared to the temp difference you would be getting is not worth it.

the difference between an mcr120 and a very thick monsta is only 5c. it's up to you if you prefer looks rather than performance...

[Mavhenz]

This look really surprising...

By having a better rad, I see it as a better way to evacuate the heat.

Are you able to explain me (in details) why I won't gain a significant performance gain for the price?

Water/rad heat transfer?

thx!

[Alexandr0s]

The fact that the dissipation of heat compared to the size of your rad isn't a linear function.

As with everything in the pc industry, this function is probably the best way to explain it: performance = cost^2. Every little gain you want will cost you a lot more, especially if you already have the highest performing loop (for example, adding another Monsta to the loop will not even yield you a 3 degree gain).

[Mavhenz]

Thx for for explanation.

But I an just amaze by the big difference of adding a 4 cores...
All I have done is to switch from a 720 be to a 965 be and change the tubing size from 7/16 ID to 3/8 ID.
And I have this night and day difference.

Could it be because my tubing at some point don't kink, but curve to a oval point? (restriction)

Went I start my system, the temp increase from 29 to 34 deg (1 hours browsing on the Internet). So that's why i conclude that isn't powerful enough to completely dissipate the heat generated at the low fan speed. And the difference is worst went on charge.

Could it be that because the new processor stress more the motherboard component, my board generate more heat?
So heat from MB+ heat from the +1 core give me this increase in temps?

My motherboard, the msi 790fx-gd-70 could deactivate the core, even with 2 core disabled, I got the same temps so I guess that the core are not completely deactivated.


Is there a way to calculate the maximum heat a radiator can handle at 100 cfm, 200 cfm, 300 cfm or more?

Is there a way to calculate the heat your system generate?

[Mavhenz]

With the PC at 4 ghz at 1,50 volt (just for fun)

I have 46-47 in charge for the CPU, and 50 deg for the chipset!

Get me away of these temps!

[millertime359]

Those temps really are not that bad. You stepped up from a tri-core chip to a quad core chip, so you will see more heat coming from the chip.

A few things, what TIM are you using and was it a fresh tube?

Also, check the mounting on the CPU block. It might not be making great contact.

[Mavhenz]

TIM? Thermal Interface M.... ??

Was it a fresh tube? yes!

Also, check the mounting on the CPU block. It might not be making great contact.

Checking right now!

[Mavhenz]

Anyone?

[wez]

Nothing wrong with your temps. Even less considering you are cooling mb chipset/mosfets as well. A quad puts more load on the mosfets, so a temp increase from that alone should be expected.

Will you get better temps with more rad power? Slightly yes, but not even near a linear increase.

[Mavhenz]

Hi!
Somebody resolved my answer and I wanted to share it to you.

The XSPC waterblock don't touch the CPU completely:



Sorry, best image available!

So some part of the CPU are left from the touch of the waterblock.

So I decided to change my waterblock for a Ek supreme Hf with coolaboratory liquid pro thermal paste. I removed all the old thermal paste and applied the new one.

Charge 36 idle 28.
Ambient temps 21.
I like that.