25cm Fan? - Page 2

halutzparilla · August 8th, 2007

i would want one of those blake, when i get to have enough money to hav my own house, apt sucks with space...

those are nice machines, i would also go with the scroll saw... very handy with modding...

Stormcrow · August 8th, 2007

Yeah, when rummaging around my hole saw collection I only have a maximum of 5 inches, the shop only has up to eight. A scroll saw would be nice, we used to have one but it finally gave out and we had to give it up when we moved. Theres still the jigsaw, but a jig makes a much rougher cut.
What I think, is that I'll go with the 5 incher, and mount a cheaper 140mm AeroCool Streamliner into the side panel. I checked the length of the panel itself, a 25cm fan would eat up almost the entire panel and I do like being able to see my internals.

One more question, for the overhaul I'm installing a 120mm fan into the two bottom 5 1/2 inch bays behind the grill covers for intake, the side panel, and then probably an 80mm fan for a blowhole at the top. Now, I'm no expert in the field of aerodynamics, but with a 120, 140, and the standard 80mm fans acting as intake, and a 120 and perhaps 80mm fan as exhaust, there doesn't seem to be a balance of intake and exhaust. I've heard for the best cooling the intake/exhaust should be evenly distributed. If so, I could have the side panel fan act as exhaust with the rear 120mm, leave out the blowhole, and have the 120mm and 80mm for intake. Still not balanced, but better. Since the side fans main duty is going to be cooling the 8800 having a meltdown towards the bottom, would it work better as intake or exhaust? Wanna make sure I set up the wind tunnel right the first time around.

Yellowhello · August 8th, 2007

I'd setup the side panel fan as intake, cause it blows directly on the 8800.

Actually, I've heard that the best cooling setup is more exhaust than intake. Maybe someone will verify.

**gvblake22** · August 10th, 2007

These large fans are also available at Performance PC's

Stormcrow · August 11th, 2007

100CFM under 20dba? Thats...yep, gotta have. Nice one Blake! And for only 20 scratch too with a side mount.

**gvblake22** · August 11th, 2007

They also custom sleeve all the fans for you too, Performance PC's is awesome.

Sumgai · August 11th, 2007

As Yellow said, the optimal cooling flow setup is generally negative pressure. Your exhast fan/s should be pulling out more than what your intakes are pulling in. This keeps the moving over your hardware rather than just around it.

dedgar · September 16th, 2007

Negative pressure is generally the best for case cooling. However, the 8800 series of video cards seem to prefer a positive pressure case cooling system.

fstroupe · September 16th, 2007

If you do happen to use a hole saw, I'd buy a cracked piece of plexiglas from Lowe's or somewhere to practice on. It ain't easy to do with a hand-held drill. I'd recommend finding a drill press to borrow.

Beetle Bailey · September 17th, 2007

I don't know if this will help or not? I've seen several electricians use a bit a lot like this one on Plexi-Glass. They seem to good results. Quick Cutter Hole Saw
If you do decide to use something like this, just remember to go slow and take your time. Bailey.

August 8th, 2007	#11
halutzparilla ako the pinoy Join Date: Jul 2006 Location: by the beach Posts: 1,698	Re: 25cm Fan? i would want one of those blake, when i get to have enough money to hav my own house, apt sucks with space... those are nice machines, i would also go with the scroll saw... very handy with modding... Abit IP35-E C2D E6750 G0 @ 2.66ghz [TR Ultra120EX] EVAG 8800GTS [TR HR03] Corsair [2gbDual@800] 820GB HDD[120/200/500] Antec TP 550W Silverstone Temjin 09 Saitek Eclipse1 & Razer DeathAdder Windows Vista Ultimate 32bit

August 8th, 2007	#12
Stormcrow HL's Technomancer Join Date: May 2007 Location: Frozen North Posts: 1,168 Blog Entries: 1	Re: 25cm Fan? Yeah, when rummaging around my hole saw collection I only have a maximum of 5 inches, the shop only has up to eight. A scroll saw would be nice, we used to have one but it finally gave out and we had to give it up when we moved. Theres still the jigsaw, but a jig makes a much rougher cut. What I think, is that I'll go with the 5 incher, and mount a cheaper 140mm AeroCool Streamliner into the side panel. I checked the length of the panel itself, a 25cm fan would eat up almost the entire panel and I do like being able to see my internals. One more question, for the overhaul I'm installing a 120mm fan into the two bottom 5 1/2 inch bays behind the grill covers for intake, the side panel, and then probably an 80mm fan for a blowhole at the top. Now, I'm no expert in the field of aerodynamics, but with a 120, 140, and the standard 80mm fans acting as intake, and a 120 and perhaps 80mm fan as exhaust, there doesn't seem to be a balance of intake and exhaust. I've heard for the best cooling the intake/exhaust should be evenly distributed. If so, I could have the side panel fan act as exhaust with the rear 120mm, leave out the blowhole, and have the 120mm and 80mm for intake. Still not balanced, but better. Since the side fans main duty is going to be cooling the 8800 having a meltdown towards the bottom, would it work better as intake or exhaust? Wanna make sure I set up the wind tunnel right the first time around.

August 8th, 2007	#13
Yellowhello Foto Lord Join Date: Mar 2007 Location: Pacific Grove, CA Posts: 4,387	Re: 25cm Fan? I'd setup the side panel fan as intake, cause it blows directly on the 8800. Actually, I've heard that the best cooling setup is more exhaust than intake. Maybe someone will verify. E8400 DFI Blood Iron P35-T2RL 4GB G.Skill 800MHz Sapphire Radeon HD3870 512MB Silverstone DA650W WD 250GB + Seagate 320GB

August 10th, 2007	#14
gvblake22 Modder-ator Join Date: Dec 2005 Location: Tempe Desert Posts: 6,476 Blog Entries: 1	Re: 25cm Fan? These large fans are also available at Performance PC's

August 11th, 2007	#15
Stormcrow HL's Technomancer Join Date: May 2007 Location: Frozen North Posts: 1,168 Blog Entries: 1	Re: 25cm Fan? 100CFM under 20dba? Thats...yep, gotta have. Nice one Blake! And for only 20 scratch too with a side mount.

August 11th, 2007	#16
gvblake22 Modder-ator Join Date: Dec 2005 Location: Tempe Desert Posts: 6,476 Blog Entries: 1	Re: 25cm Fan? They also custom sleeve all the fans for you too, Performance PC's is awesome.

August 11th, 2007	#17
Sumgai Overclocker In Training Join Date: Jan 2007 Location: Los Angeles, CA Posts: 283	Re: 25cm Fan? As Yellow said, the optimal cooling flow setup is generally negative pressure. Your exhast fan/s should be pulling out more than what your intakes are pulling in. This keeps the moving over your hardware rather than just around it. Current Machine: Intel E2220 Gigabyte P35-DS3L AC Freezer 7 Pro 2GB Crucial Ballistix DDR2-800 EVGA 8800GT 512MB X-Fi Extreme Gamer Seagate 250GB SATA WD Raptor 74GB SATA Samsung S203B DVD+R Silverstone SF60 Modular 600w Antec Nine Hundred Acer 2216Wbd 22" LCD

September 16th, 2007	#18
dedgar Edging towards disaster Join Date: Nov 2006 Location: Third rock from the sun. Posts: 122	Re: 25cm Fan? Negative pressure is generally the best for case cooling. However, the 8800 series of video cards seem to prefer a positive pressure case cooling system. Intel E8400 - Gigabyte X45-DS4 Zalman 9700NT - 4 Gig Mushkin DDR2-1066 Two Sapphire HD 4870 512mb in CrossFire PC P & C 750 watt - Samsung 216BW LCD Samsung DVD-RW - Logitec Z-640 speakers Linksys WRT54GL Router - CM 690 Case Seagate 250gig - Vista Home Premium 64bit

September 16th, 2007	#19
fstroupe A Lonely Geek Join Date: Aug 2007 Location: NE Mississippi Posts: 291 Blog Entries: 3	Re: 25cm Fan? If you do happen to use a hole saw, I'd buy a cracked piece of plexiglas from Lowe's or somewhere to practice on. It ain't easy to do with a hand-held drill. I'd recommend finding a drill press to borrow.

September 17th, 2007	#20
Beetle Bailey Join Date: Mar 2007 Location: Harrah, OK Posts: 383	Re: 25cm Fan? I don't know if this will help or not? I've seen several electricians use a bit a lot like this one on Plexi-Glass. They seem to good results. Quick Cutter Hole Saw If you do decide to use something like this, just remember to go slow and take your time. Bailey.