H100 Push/Pull... Any advice

Samin

Samin

Samin

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Hi there I was wondering if anyone had any advice on what fans I should buy for for a push/pull configuration on a Corsair H100?

I was thinking about buying 4 x Aero-cool Shark 120mm fans, would they work well?

Thanks
 
Nope. They provide only 1.273mm H2O static pressure on power mode.

Get 2 Enermax Magma (1.4mm H2O/18db), and believe me they are more than enough.
I put 4 on the H100 and had to remove 2 of them. Because the temps were ridiculous low on the overclocked FX8350. WIth 4 of these, it is idling at 0C, and prime 95 at 48C. (1.5v, at 5.193 Ghz)

With 2 the above temps are 5-7C more.
 
The high temp is just after playing Crysis at 5.193Ghz. Took that pick before remove the 2 fans yesterday.

Temps_zps6446ce0d.png


The Magma fans are awesome. I put them to blow air into the case through the radiator, because the exit air is freezing almost. And due to is close to the 7950 (1100/1550) as the cold air hits the gfx card, dropped it's temps by 5C also.

And with those 4 is running Prime95 at 48C, after the initial 5 second spike to 54-55 before the pump kicks in.

And these indeed are 18db fans.

Btw Core Temp puts a ? most of the time next to 0C. Idk if both those programs support to show minus
 
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It won't idle at 0. Use Core Temp or Real Temp. You'll find it's actually mid 20's or something similar.

*Edit*

If your Core Temp is placing a '?' next to a core, that could mean you have a dead temp sensor on your CPU.
 
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Sliver said:
It won't idle at 0. Use Core Temp or Real Temp. You'll find it's actually mid 20's or something similar.

*Edit*

If your Core Temp is placing a '?' next to a core, that could mean you have a dead temp sensor on your CPU.
Click to expand...

Only when sits at 0 for long time it does so. Not when is working.
 
I do not see why we argue here.

It hits 48C when running Prime 95 on the above overclock since I put the 4 Magma fans.

Before that, it was getting to 68-70C (idling mid 20s) with 2 Corsairs + 2 nonames I had, with 70db noise.

So if I have faulty CPU maybe OCUK can refund it or get a different replacement? Doubt they will do so.

FYI the air coming out of the fans is freezing.
And nobody argued that the SP120 perfomance working at 100% speed are better, however they do generate 35db each.
 
it just sounds a bit well, far fetched that you have a 5g+ Oc and are getting better cooling with a H100 cooler than people with custom cooling loops
 
Hakanese said:
it just sounds a bit well, far fetched that you have a 5g+ Oc and are getting better cooling with a H100 cooler than people with custom cooling loops
Click to expand...

I'd go one step further than ' far fetched ' . I'd say his PC is violating the laws of physics. :p

For Panos, here's why:

I use a H100 too ( see my sig ). The room my PC is in is generally 20ºC. With my PC powered up at idle, my temps across my 4 cores average 28ºC. This is expected, as before power up, my CPU is at room temperature, 20ºC. The extra 8ºC once powered is from the electricity flowing through the chip at idle. It would be higher, but my H100 is taking away some of the heat, so it's stable at 28ºC.

For your PC to idle at 0ºC Panos, you would need a much better cooler than a H100. You would need a liquid cooler with a coolant temperature much less than 0ºC in order to keep your CPU at 0ºC in a room at 20ºC.
 
*LOL* I was trying to be polite. But yeah, Air cooling in a home enviroment will never yield temps that low. Unless of course you're doing a video with 100 fans and it's April Fools
 
Might have a faulty CPU temp sensor, could be. But it should have shut my pc when it run Prime95 and hit 48C. Because surely the "real" temp could have being more than 70C (like before) if we assume that normally I have 25-40 as some have said, instead of 0C.

FYI this is from last week when had it at 4933 playing with the Overdrive, running the 2 stock Corsair fans + 2 no name ones.

Overdrive-4900_zps728a7893.png


and this from today (plugged the two magma that had removed) , dropping the OC to match the previous one for the sake of reference. (as I said initially, there is a spike before the pump kicks in at 100% but that happens with the stock fans also).

Prime48_zps14089a51.png



If you have 4 SP120 perfomance, put them all at 100% fan speed (connect them to molex) and idle your CPU at 0.8-0.9v, like the FX8350 does. My room temp is ~17C btw but you will not have issue with 20C
(I have the thermostat just outside the door and like the house cool)

Given the argument, plugged the 2 Magma that removed, and here is the Core temp screenshot after running the Crysis Benchmark. (32C max)

Coretemp0C_zpsbe48c675.png


As for the lower temp that comes after the exhaust fans from the radiator, consider that the air comes with some speed & pressure.


Also when you compare AMD to Intel processors on cooling, they have different shaped surfaces, so if you have an Intel you might have higher temps than with an AMD one using the same setup.

You see the AMD are convex shaped while Intel are concave. None is flat.

Both generating heat at the centre of the CPU, however the AMD has better contact with the flat surface of the heatsink and better heat dissipation. While the Intel ones are more prone to air bubbles and need for higher amount of thermal transfer agent and not direct contact with the flat heat sink.

http://media.bestofmicro.com/6/2/395498/original/Heatspreader-Scheme.png

No hotlinking. Thank you.

So do not be so surprised if someone with AMD FX CPU comes around with better cooling than an Intel one with same config.
 
Thanks for all the interest, I think i'm just going to stick with the dual pack of SP120's in the stock recommended push configuration as it seems the best option for price and performance.

Just stuck on which version to buy quiet or performance edition
 
Rainagul said:
Panos just take a screenshot with HWInfo and prove everyone wrong. If not, then accept it that you won't be idling at 0
Click to expand...

I have done that above, but nobody believes me. Hoping my last post will be sufficient, given the amount of data provided. :)

However, seems people are stuck to an idea and refuse to change even if the simple data & maths are there. Bursting bubbles is kinda difficult task.
 
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