Push or pull with PA120.3

c0dec · 12 Mar 2009 at 15:50

Currently running a ThermoChill PA120.3 with 3 Yates pushing at full pealt through it, would I be better off having these sucking the heat off rather than pushing air through? Ive never really thought about it to much tbh.

ecat · 12 Mar 2009 at 15:56

iirc Pull is recommended. It works for me

c0dec · 12 Mar 2009 at 15:57

hmm interesting might be a job for the weekend then :]

Only downside I suppose is that my rad is behind my PSU so I could then be sucking through the hot air from my PSU as well, saying that it is only the side of it which is facing the rad so probably wouldnt be an issue.

shadowscotland · 12 Mar 2009 at 16:23

use a shroud to maximise airflow - read up on rads, shrouds and fans in watercooling - they are out of favour in the current 'bling' market but really do help.

Monkey Puzzle · 12 Mar 2009 at 16:29

Very useful info here:

http://www.clunk.org.uk/martins-liquid-lab-articles/radiator-fan-orientation-and-shroud-testing.html

DampCat · 12 Mar 2009 at 16:42

The fans will be sucking the same air from the same place regardless of which side of the radiator they're on

So i wouldn't worry about your PSU.

c0dec · 12 Mar 2009 at 16:45

DampCat said:
The fans will be sucking the same air from the same place regardless of which side of the radiator they're on So i wouldn't worry about your PSU.

Yes but they are currently pushing not pulling

c0dec · 12 Mar 2009 at 16:46

Monkey Puzzle said:
Very useful info here:

http://www.clunk.org.uk/martins-liquid-lab-articles/radiator-fan-orientation-and-shroud-testing.html

Thanks for this

ecat · 12 Mar 2009 at 16:47

Monkey Puzzle said:
Very useful info here:

http://www.clunk.org.uk/martins-liquid-lab-articles/radiator-fan-orientation-and-shroud-testing.html

Good read especially if you read it properly and pay attention. At first glance I was muttering and shaking my head. Oh, 38mm fans @ 2000rpm ! Further down for 25mm fans @ 1350 rpm

DampCat · 12 Mar 2009 at 16:49

c0dec said:
Yes but they are currently pushing not pulling

Sorry, what I meant was... regardless of whether your fans are above the radiator pulling the the air through, or below the radiator pushing the air through, the air (thus heat) will still be transferred from the same place (ie, around your PSU)

w3bbo · 12 Mar 2009 at 20:27

Makes bugger all noticeable difference imo.

Ducky Spud · 12 Mar 2009 at 23:40

haha, good straight talking answer by w3bbo!!

That link by monkey puzzle shows there is a difference, but like w3bbo said, its not really noticable. Ive run my fans both push and pull and both ways runs just over 20 at idle and just over 40 at 100%

shadowscotland · 13 Mar 2009 at 11:37

I would guess that the differance is more noticeable on a Xspc120.1 rad struggling with 150w of heat load than your PA120.3's coasting with ~200w of load

Just a guess

Currently running a ThermoChill PA120.3 with 3 Yates pushing at full pealt through it

Maybe the answer should be look at getting a second loop (or back off the OC or be happy with min 50c temps)...sounds noisey to me (but I would say that

)

c0dec · 13 Mar 2009 at 11:46

ha, still hitting 60C with 1.4v through my E8600 on full load though

shadowscotland · 13 Mar 2009 at 11:56

but are your too 8800 in the loop? - and do the have full cover blocks? - and why the nozzle with a duel core?

60C if fine especially if twin hot OC gpus in the loop. (correct me if I wrong as have no personal experance with Wolfdales)

Happy · 13 Mar 2009 at 12:09

I think going by his sig, he's running a E8600 and a 8800GT with a full cover block in his loop.

pjansell · 13 Mar 2009 at 12:14

w3bbo said:
Makes bugger all noticeable difference imo.

agreed, i'm using fesers tried both configurations, no difference what so ever, perhaps 1c if that, no notable change.

c0dec · 13 Mar 2009 at 13:15

shadowscotland said:
but are your too 8800 in the loop? - and do the have full cover blocks? - and why the nozzle with a duel core?

60C if fine especially if twin hot OC gpus in the loop. (correct me if I wrong as have no personal experance with Wolfdales)

Oh shiiiiiit, I changed from a quad and totally forgot about my quad nozzle :/ doh! That would explain my strange idle temps I suppose, even tho they sort out on full load.

And as per above im running a single 8800 which get its feed from the CPU, so in theory the CPU block should get nice cool liquid.

When it first went in:

shadowscotland · 13 Mar 2009 at 14:17

c0dec said:
And as per above im running a single 8800 which get its feed from the CPU, so in theory the CPU block should get nice cool liquid.

Not quite - loop reaches equilibrium quickly and only a 1 degrees different form one part of a loop to another. Water pressure can be different but not temp.

c0dec · 13 Mar 2009 at 16:06

Consider me told