Few Fan\setup questions

[aggressor]

Just a few fan questions...

1. I'm trying to build a quiet PC. I have a very basic mid-tower case (Enlight 720), which I love very much It has 1 80mm front intake fan, and a spot for a 80mm fan in the back behind the CPU. I also have an Antec TruePower 430. I'm thinking of replacing the front fan (currently disconnected because it makes way too much noise), plus adding a fan in the back.
I'm guessing those 3 (Front blowing in, back blowing out, plus the 2 on the Power Supply) should be enough for my set up, which is an old school Athlon XP 1900+ with a GeForce3 TI500

2. Has anyone tried the PC Power and Cooling 80mm fans? They claim 27cfm @ 20db. Here is a link

3. Who actually has the Panaflo L1A in stock?

4. The fan on my GeForce died. Since I have a Leadtek, it has a huge heatsink covering the GPU+The memory so I can't just replace the fan, and I'm looking for a replacement. Any ideas?

5. How come barely anyone sells Papst fans?

 

[RyanM]

I think it was Nexfan.com that carries stuff from 20x20x10 up to 120mm....check them out. They may have something close, just measure it first.

 

[aggressor]

Huh?

 

[RyanM]

The fan on your videocard. Measure it, and then see if Nexfan.com has a fan of that size. They carry 20mm, 30mm, 40mm, and 50mm fans, in addition to the 60mm to 120mm everyone else has.

 

[aggressor]

Oh, no. It's built in to the huge heatsink. That's why I can't just replace it. I'd need a new heatsink\fan, and I was wondering if you guys could recommend any (quiet) ones.

 

[OulOat]

Crystal Orb 7volted and lapped to the copper will cool your GPU very well for a minimal amount of noise. You might need to get ram sinks, but this is a great fan for it's price. However, for a completely noiseless solution, Zalman ZM80A-HP. If it fits your card, it should cover the mem too. This cooler is actually pretty good, ocsystems sell an OCed Radeon 9700 Pro using this hs.

 

[aggressor]

Bump

 

[RyanM]

Okay, by Enlight 720, I assume you're referring to the Enlight 7250 series cases. Now, quietness is your primary concern, so as far as fans go, the larger, the better. They may push a ton more air, but you can always rheostat them down a notch, resulting in nearly silent operation without choking airflow.

The fans I just bought for my case are 120mm Enermax fans, which pushes out 89 CFM at 2600 RPM at 36 dB. All the while, it only sucks 3.6 watts of power. You could place one of these in the front of your case, with an 80mm Panaflo at the rear, and set the 120mm to half speed, the Panaflow to 75%, and you'd have MORE than adequate cooling for your purposes. You may be able to set them lower; once they're installed and running for a few days, see what your system temp is at, and start playing around with cutting speed on the rear 80mm fan. You may be able to ratchet that down another 25 to 40% and maintain the same temp, but there are a lot of factors I can't guess on.

In order to mount the 120mm fan, you're gonna need to drill the mounting holes yourself, and possibly some more in the metal to open up airways. When you're done with that, you're gonna wanna drill open the holes on the front bezel of the case, in order to support the extra airflow. That's really easy; it's plastic.

Anyways, by the time you're done with all that, you're gonna start thinking to yourself, "Damn....these harddrives are loud..."

 

[BG4533]

It is sort of a waste to have a lot of intake and a little exhaust. Your intake and exhaust need to be nearly balanced. If you have far more exhaust that intake, you will be attempting to force air into your case, but it will have no where to go.

Brian

 

[aggressor]

I'm only gonna be using 80mm's, otherwise I'd need to get an adapter.

I was just thinking of 1 Panf in the front and 1 in the back. The only problem is I can't find anyone with them on stock

Also, due to the lack of responses, I'm guessing no one has used the PC Power and Cooling fan?

 

[RalfHutter]

A lot of places have Panaflos in stock. Use the "Search" function here at AT and search for "Panaflo". You'll get dozens and dozens of hits. Many of them will be from people who asked "where is the cheapest place to buy Panaflos?". Follow those leads and not only will you get Panaflos, you'll get cheap Panaflos!

 

[Bluefront]

"It is sort of a waste to have a lot of intake and a little exhaust. Your intake and exhaust need to be nearly balanced. If you have far more exhaust that intake, you will be attempting to force air into your case, but it will have no where to go. "

It's funny listening to stuff like this. Having more intake than exhaust is what's called a positive pressure setup. If the incoming air is filtered, and the pressure inside the case is positive, your case stays clean.....dust doesn't get in. Many people including me, have their cases arranged like this. Believe me, the air will get out, no matter how well sealed your case is.....

 

[BG4533]

Originally posted by: Bluefront
"It is sort of a waste to have a lot of intake and a little exhaust. Your intake and exhaust need to be nearly balanced. If you have far more exhaust that intake, you will be attempting to force air into your case, but it will have no where to go. "

It's funny listening to stuff like this. Having more intake than exhaust is what's called a positive pressure setup. If the incoming air is filtered, and the pressure inside the case is positive, your case stays clean.....dust doesn't get in. Many people including me, have their cases arranged like this. Believe me, the air will get out, no matter how well sealed your case is.....

My case is arranged like this as well, but it isnt necessary to have 2 or 3 times the amount of air going in as going out. Sure the extra air would get out, but much of it will never get in in the first place.

 

[Bluefront]

Well you're right. It doesn't require twice as many intake fans to achieve positive pressure. only a small amount of positive pressure is required....but it can be difficult to judge if your case actually has positive pressure....

 

[RyanM]

You fail to realize - The 120mm fans cost barely more than good 80mm fans, but they'll move twice the amount of air at the same decibel level, or the same amount of air at half the decibel level. Or somewhere in between. He said he's trying to build a quiet PC, and by going with the large fans, he has MUCH more flexibility when alloting airflow versus volume level.

Of course, after I posted he clarified that he only wanted to use 80mm fans. Nonetheless, based on what he originally said, my suggestion was certainly not out of bounds.