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Intake or Exhaust for Slipstream Fan? See Pics...

post #1 of 5
Thread Starter 
Hello all,

I just purchased a 1600rpm/88cfm Scythe Slipstream fan and am debating if I should use it as a top front intake or top back exhaust fan. My goal is to get the best airflow possible for my CPU cooler which is a modified OCZ Vendetta (I dumped the 92mm fan that came with it and am using an Ultra Kaze 2000 @ 75% = 1750rpm/60-65cfm).

Here are a couple of pictures (although a bit outdated) of my current in/out fan setup:





Please note that my 2 exhaust fans are free flow (no grills or filters, etc on them). All my intake fans just have the case mesh in front of them.

Also, the top back exhaust location where the fan would be used is based on a 80mm hole. I will be using a 80mm to 120mm fan adapter to mount the exhaust fan, similar to this (see image top left): http://www.svc.com/fa80120-uvblu.html.

So, do I….

1) Mount the Slipstream as a top front intake and move my S-Flex E to top back exhaust?
2) Just mount the Slipstream at top back exhaust?

I’m just not sure if it will be better to have more airflow coming in or going out thru the top of my case for my Vendetta Cooler as the Ultra Kaze pulls a lot of air into it (going for a wind tunnel baby!). The temps are good now but I want the best possible for my next OC attempt.

Please let me know what you guys think and thanks in advance!
PacMan4
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CPUMotherboardGraphicsRAM
e6420 @ 3.0Ghz eVGA 680i LT eVGA 8800 GTS 640mb @648/1015 4GB OCZ Platinum 800MHz 
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320 Western Digital DVD±R/RW/CD-R/RW Windows Vista Home Premium 620W Corsair HX 
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CoolerMaster 730 
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PacMan4
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320 Western Digital DVD±R/RW/CD-R/RW Windows Vista Home Premium 620W Corsair HX 
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CoolerMaster 730 
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post #2 of 5
Thread Starter 
Bump.
PacMan4
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320 Western Digital DVD±R/RW/CD-R/RW Windows Vista Home Premium 620W Corsair HX 
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CoolerMaster 730 
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PacMan4
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320 Western Digital DVD±R/RW/CD-R/RW Windows Vista Home Premium 620W Corsair HX 
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post #3 of 5
Top front would be better. Your exhaust looks great, and the Slipstream should help keep up with it. I would also put an 80-92mm on the side vent, but that wouldn't change much, and your airflow is already pretty much umm, front to back, so I wouldn't mess that up.

I was just about to suggest using a shroud for the 120mm you will have spare, but you thought of that

Next thing I would do is, with the 92mm you will have laying around, ignore what I said before and put it on the side vent. You can always check temps before and after, but I'm sure this should lower them by at least 1C. I was hesitant before because I didn't want you to buy a whole new fan.

-Adrien, l'expert en aeration d'ordinateurs
Obsidian
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Obsidian
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post #4 of 5
buy another fan and do both its not that much $$, i bought another Scythe Ultra Kaze 120mm for my rig for $7
Gaming Rig
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Gaming Rig
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by Adrienspawn View Post
Top front would be better. Your exhaust looks great, and the Slipstream should help keep up with it. I would also put an 80-92mm on the side vent, but that wouldn't change much, and your airflow is already pretty much umm, front to back, so I wouldn't mess that up.

I was just about to suggest using a shroud for the 120mm you will have spare, but you thought of that

Next thing I would do is, with the 92mm you will have laying around, ignore what I said before and put it on the side vent. You can always check temps before and after, but I'm sure this should lower them by at least 1C. I was hesitant before because I didn't want you to buy a whole new fan.

-Adrien, l'expert en aeration d'ordinateurs
Thanks for the suggest! As for the side vent, I previously had a 45cfm 120mm fan mounted with my stock cooler and it did lower temps by 6C as seen below....



...but once I got my Ultra Kaze for the CPU it didn't do jack for temps anymore blowing in or out so I got rid of it.

Quote:
Originally Posted by sgdude View Post
buy another fan and do both its not that much $$, i bought another Scythe Ultra Kaze 120mm for my rig for $7
Where? That is a good price, please inform! These are good fans.

I keep thinking the Slipstream will do better in the back though just becuase it has lower pressure than the S Flexs do and I wouldn't be running it full tilt in front anyways. I will need to test both ways I guess.
PacMan4
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e6420 @ 3.0Ghz eVGA 680i LT eVGA 8800 GTS 640mb @648/1015 4GB OCZ Platinum 800MHz 
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Case
CoolerMaster 730 
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PacMan4
(13 items)
 
  
CPUMotherboardGraphicsRAM
e6420 @ 3.0Ghz eVGA 680i LT eVGA 8800 GTS 640mb @648/1015 4GB OCZ Platinum 800MHz 
Hard DriveOptical DriveOSPower
320 Western Digital DVD±R/RW/CD-R/RW Windows Vista Home Premium 620W Corsair HX 
Case
CoolerMaster 730 
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