higher cfm fans question

jamescardenas07 · Dec 27, 2006

currently i have 2 120mm zalman fans running at full power and i think its max cfm is 40 to cool my 120.2 rad

if i get the panaflo 115cfm fan ( http://www.svc.com/fba12g12u.html )
how much lower temps in Celcius will i be able to see?

right now i idle 52C and load 60C with a c2d e6600 @ 3.4ghz 1.4vcore

jivetrky · Dec 27, 2006

Zoinks, those temps are fairly high for water. Unless it's just that hot where you have the computer. I think you'd see a dramatic decrease in temps with those fans.

But keep in mind that the increase in noise will be just as dramatic. I'd also buy a fan controller so you can turn the fans down to an acceptable noise level.

jamescardenas07 · Dec 27, 2006

4od · Dec 27, 2006

I say, screw it all and spend 60$ on two of these bad boys

They may sound like a pair of jet engines, but together they should push more air than 11 of your sissy zalmanns

jivetrky · Dec 27, 2006

4od said:
I say, screw it all and spend 60$ on two of these bad boys

They may sound like a pair of jet engines, but together they should push more air than 11 of your sissy zalmanns

Just make sure you also order a pair of these:

QuietIce · Dec 27, 2006

4od said:
I say, screw it all and spend 60$ on two of these bad boys

Specifications: 120x120x38mm, 220.01 CFM @ 4600 RPM, 65.0 dBA, 29.40 watts, 2.45 amps, Maximum Air Pressure 26.44 mm H²O, 12v DC, 3 or 3+4 pin Molex header connector(s).

Jeez man, even the Sunbeam controllers won't handle THAT load ...!

Joe Camel · Dec 27, 2006

dont go overboard, 220CFM fans are wicked LOUD!!

its hard to say exactly how many C's your going to go down, but i agree, it should be a *VERY* noticeable upgrade. (60C load is worse than my FOLDing rig e6600 @ 3.6GHz on AIR

)

assuming the Zalman fans are 25mm thick, *ANY* 38mm thick 120 would be an improvement (thicker fan = more pressure = more CFM that actually gets THROUGH the rad) i dont think you need to go >100 CFM, id bet 2x 70-80 CFM (38mm thick) 120s would give you a NICE temp drop.

another possible way to upgrade here would be to add 2x more "low" speed fans to your current setup thus creating 4x fans in a "push/pull" configuration.

just keep in mind: no mater how good your water loop is, its the AIR that ends up taking the heat away... more CFM = better cooling.

4od · Dec 27, 2006

QuietIce said:
Jeez man, even the Sunbeam controllers won't handle THAT load ...!

thats why the company that sells them solders on a 3-pin for speed control and a 4-pin for power

but i was just thinking... you could probably blow a bad power supply with 5 or 6 of those monsters (assuming they draw from the 12v rail)

speed bump · Dec 27, 2006

4od said:
thats why the company that sells them solders on a 3-pin for speed control and a 4-pin for power

but i was just thinking... you could probably blow a bad power supply with 5 or 6 of those monsters (assuming they draw from the 12v rail)

Maybe 5 of those=12.25A off your 12v line or 147w.

For good fans I like Nidec Beta Vs but they are hard to find, so I would say to find a Sunbeam Reobus and a couple of Delta WFBs or Panflows.

johan851 · Dec 27, 2006

If you want to improve your airflow, make sure you get 38mm thick fans and use a shroud. Those two alone are going to net you better performance, even if you don't change the airflow. Specifically, I would get a pair of medium-speed Panaflos or some of the Sanyo Denki 120x38mm's. As you head up into the 100CFM+ range, you're going to start to see some very limited returns. I don't think you need something that powerful.

http://www.svc.com/fba12g24m.html

Since your temps seem a little bit high, you might want to double-check your block mounting and thermal paste application. What pump are you using, and what other blocks beside the CPU block are in the loop?

darkcow · Dec 27, 2006

if i had 5 delta's in a case, i would probably shoot myself from the noise, it would be like 2 vacum cleaners running 24/7 in my room

speed bump · Dec 27, 2006

darkcow said:
if i had 5 delta's in a case, i would probably shoot myself from the noise, it would be like 2 vacum cleaners running 24/7 in my room

I ran 6 Nidec Beta Vs at 7v for the whole summer and it really wasn't loud.

Also the absolute best option for cooling would be a blower.

(Clanger)(DOA) · Dec 27, 2006

these are pretty good.. worth the money..

jamescardenas07 · Dec 27, 2006

i reseated the cpu block about 10times already with diff methods of applying as5 and nothing improved.

my pump is the mcw655 or something haha from the swiftech apex ultra h20-220 kit

Joe Camel · Dec 27, 2006

yup, your "fans" are defiantly the weak link in you loop

4od · Dec 27, 2006

(Clanger)(DOA) said:
these are pretty good.. worth the money..

Yeah, on a more serious note, i would go with these, i have 2 of thhe 80mm version of these, and they blow a lot of air and are easily the least-noisy fans in my case, the motors are absolutely silent, so all the noise is air movement, which is much softer on the ears, thus you will percieve them as quieter than they are due to no high-pitch motor noise.

QuietIce · Dec 27, 2006

4od said:
thats why the company that sells them solders on a 3-pin for speed control and a 4-pin for power

Warning: Do not connect high power fans directly to your motherboard header or fan controller as damage may result.

http://www.pccasegear.com/prod2431.htm

That doesn't mean you can't find a controller for them but you would have to look beyond the computer world for it ...

Immortal_Hero · Dec 27, 2006

Or a couple of these: http://www.sidewindercomputers.com/de12gf.html

If you want air flow for the noise there ya go... I would say a couple good Delta's would do the trick. Just get 120x120x38.

Joe Camel · Dec 27, 2006

come on guys, if he wanted 200+ CFM / 60 dBa fans, i highly doubt he'd start with 40 CFM Zalman's.

aside from benching or "server" rooms, i think anyone would be crazy to go > 45 dBa

i wonder just how many of you have actually had a 60 dBa fan in the same room... trust me (i HAVE) you DONT want them!

||Console|| · Dec 27, 2006

the noisest fans I ever had were 2 tornados I had in my AXP-m system , It would give you a head ach after a while .

higher cfm fans question

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