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Discussion Starter #1
Hi guys, this is my first time water cooling, and I wanted to know how you thought my temps were. I'm running my Q9550 4.2GHz @ 1.31v

prime 95 small ffts:
Idle : 35 35 41 41, load 54, 54, 58, 58

prime 95 blend:
idle : 35 35 41 41, load 53, 50, 58, 53

edit:

gaming temps are:
idle : 35 35 41 41, load 47, 40, 42, 47

I'm also using 2 yate loon medium speed fans in a pull configuration. The model number is D12SM-12

I have some fans on the way from Petras coming in.

How much of a difference would I see with that 3rd fan?

I may do a push/pull config, depending on the temps.

jam3s
 

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Discussion Starter #4
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Originally Posted by javier
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What are your ambients? Those are reasonable temps. I'm getting 54c max with P95 small for 6hrs with 6 fans on my rx360. I'm running more volts than you though...

EDIT: What rad are you using?? It says mcr320 in your sig, but you said 2 fans?

Thank you for the response, I apologize for the double post.

I'm not too sure what my ambients are, since i dont have a termometre or anything. I'm downstairs in my unfinished basement so I figure it's about ~22c or so.

What voltage are you running your processor at, and at what speed?

jam3s

edit: nice edit
 

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Originally Posted by javier
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FYI- Fans make such a big difference. I was using 3 fans in pull with shrouds and maxing at 58c. With 6 all with shrouds I dropped 4c. Plus, I'm running them slower = quieter


yeah, I was reading either skinnee or martins testing on fan configuration and apparently the best is push, then fan + shroud then push/pull and then the best of course is push + shroud + push + pull.

I will probably lean towards push/pull like your setup. Thanks for letting me know that my temps weren't far off.

jam3s

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Originally Posted by javier
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My ambient is a very steady 23c. I run at 4.25ghz(500x8.5) with 1.33v on load (LLC enabled).

wow your system is pretty similar to mine. my Q9550 runs 4.2GHz with 1.31v (1.33v drooped to 1.31v) on load with LLC.

nice!
 

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Discussion Starter #9
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Originally Posted by javier
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Yea, your temps are where they should, especially when you consider that 1/3 of your rad is running passive!

Our systems are almost identical! What's the vid on your chip?

xD it's 1.20v

it's just under the average VID i think most people get 1.225v
 

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Discussion Starter #11
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Originally Posted by javier
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I must have gotten lucky, mine is 1.18v. I had no idea what the average was... good to know

congrats man, nice system too


+rep

Also for those interested Martin did a great review on how to orient fans with a rad and their respective gains. Here is the LINK.

The best is push/pull with shrouds and of course the next best method is push/pull.

jam3s
 

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Quote:


Originally Posted by jam3s
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congrats man, nice system too


+rep

Also for those interested Martin did a great review on how to orient fans with a rad and their respective gains. Here is the LINK.

The best is push/pull with shrouds and of course the next best method is push/pull.

jam3s

Thanks

What I have been wondering, is which is better, having 1x1600rpm fan pulling or having 2x1200rpm fans push/pull? How much slower can you run fans if you're running push/pull to get equal performance to 1 higher speed fan?
 

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Discussion Starter #13
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Originally Posted by javier
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Thanks

What I have been wondering, is which is better, having 1x1600rpm fan pulling or having 2x1200rpm fans push/pull? How much slower can you run fans if you're running push/pull to get equal performance to 1 higher speed fan?

I'm not sure. I'm not an expert at all on this, but Personally I think that it depends on the rad in question.

I think rads with higher FPI (fans per inch) require Higher CFM fans and higher static pressure rating whereas a rad like mine, only requires low-medium speed CFM fans.

jam3s
 

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Discussion Starter #14
bump --- i'm curious to see what you guys think.

This is my first loop. It's cpu-only. Using MCP655, MCR320, Apogee GTZ, and 2 yate loons (for now).

jam3s
 

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To me they seem a bit high. Try to reset the block a couple times too see if that does anything. Adding some more powerful fans would help a bunch too, I recommend something like 50cfm at minimal, 80cfm and up is the sweet spot.
With my sig rig i get about those gaming temps, and i pump 1.5v into my puppy. When I didnt lap my cpu.
 

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Discussion Starter #16
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Originally Posted by Ziox
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To me they seem a bit high. Try to reset the block a couple times too see if that does anything. Adding some more powerful fans would help a bunch too, I recommend something like 50cfm at minimal, 80cfm and up is the sweet spot.
With my sig rig i get about those gaming temps, and i pump 1.5v into my puppy. When I didnt lap my cpu.

yeah they're medium speed yates.

I think they push something like 70 cfm @ ~30 dba.

I have a couple more on order (I plan to try push/pull depending on the noise).

I will try reseating my CPU block a couple of times, hopefully it gets me somewhere... I'm running out of TIM though. I"m using AS5 but maybe i'll try some of my shin-etsu lying around...

jam3s
 

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Quote:


Originally Posted by jam3s
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Also for those interested Martin did a great review on how to orient fans with a rad and their respective gains. Here is the LINK.

The best is push/pull with shrouds and of course the next best method is push/pull.

jam3s

Actually that applied to the 38mm fan test - the somewhat abridged 25mm fan test 'conclusion' was that:

Quote:


This appears to change however for the lower speed fan where pull actually does better. I believe at this slower speed pressure and air flow is so slow that it's simply not turbulent enough to show gain in push and the radiator performs better with the more evenly distributed air flow over the radiator that's provided in a pull condition.

Push/pull is always going to win through total power, although the gains generally aren't as huge as you might hope for. If you have to go for push vs pull through considerations of space / noise / economy then whether you go for push or pull depends on the fan speed and static pressure.

Our OP here has medium speed Y-L's so would fall into that lower speed / pressure category.

Of course, there's no subsitute for testing on your own system... I mean how hard is it to switch a few fans around ...apart from wrestling with the gaskets anyway
 
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