A lot of OEMs, especially Dell, make use of ducting systems to cool their systems, which gave me an idea. I was looking at the scythe ninja, which allows a 120mm fan to be placed on any side of it and wondering about just creating a duct running to the 120mm exhaust fan in my case, which sits a few inches behind the cpu. Creating a duct that forced air to be drawn in from the side of the cooler closest to the front of the case and pulled through the cooler than through the duct and exhausted directly out of the case. Dell does this with CPUs and a lot of graphics coolers do something similar. The benefit of this would be eliminating the need for a fan on the ninja itself and that the case exhaust fan would be blowing out much hotter air than without the duct. It might not directly decrease the cpu temperature, but it should reduced the buildup of hot air in the case, which would help temperatures. Any thoughts on whether this would work and a good way to contruct such a duct?
Anyone tried to make a fan duct
- Thread starter obeseotron
- Start date
Both silentpcreview.com and overclockers.com have many articles on/about ducting.
I would reccomend making a mock-up out of thin cardboard taped together to see what
the end result would look like and if it offered any advantage.
As far as offering tool use advice of any kind, I will pass on that. Far too many refuse to
buy tooling and some have difficulty drilling a hole
Not to be *smart*but here is a review of a ThermalRight duct.
http://www.ocia.net/reviews/hr01/page3.shtml Down to mid-page.
Seems like they got some positive results
...Galvanized
I would reccomend making a mock-up out of thin cardboard taped together to see what
the end result would look like and if it offered any advantage.
As far as offering tool use advice of any kind, I will pass on that. Far too many refuse to
buy tooling and some have difficulty drilling a hole
Not to be *smart*but here is a review of a ThermalRight duct.
http://www.ocia.net/reviews/hr01/page3.shtml Down to mid-page.
Seems like they got some positive results
...Galvanized
Just remember...any ducting that isolates the CPU exhaust is going to need an additional exhaust fan for the rest of the hot case air. Otherwise you're venting it all through the CPU and/or PSU, causing those to not take full advantage of your ductwork.
-z
-z
Ditto, try using your video card as an exhaust, since that and your HDDs are the only other things that need a fan for cooling (besides your power supply).
I made one for a 60mm fan on my chipset out of aluminum roof flashing & high grade duct tape (it's like heavy aluminum foil & very sticky). Works great, cheap & the only tool you need is an old pair of snips or scissors. My whole system is exhaust cooled.
- May 13, 2003
- 13,704
- 7
- 81
I am still trying to find the stuff to do one for my machine. Currently looking for plexi or something. But one way or another, I'll get it done.
Guys what if you get a plastic duct the right size or slightly larger or smaller then the CPU fan and.....well for eg.
My power suply has two fans one at the back of it (it is pushing hot air out) and one underneath it(which just happens to be directlly underneath my CPU's H/S fan, sucking up the hot air from the cpu), if you attach one end of that plastic duct some how to the CPU H/S fan and the other to my Power suply's underneath fan.
And also if you have a 80 MM fan at the rear of the case acting as the xhaust for the rest of the system would that do any good or would that be a BAD idea?
My power suply has two fans one at the back of it (it is pushing hot air out) and one underneath it(which just happens to be directlly underneath my CPU's H/S fan, sucking up the hot air from the cpu), if you attach one end of that plastic duct some how to the CPU H/S fan and the other to my Power suply's underneath fan.
And also if you have a 80 MM fan at the rear of the case acting as the xhaust for the rest of the system would that do any good or would that be a BAD idea?
I would think this is back ass words
Lighten up I'm kidding.The better PSUs are rated at 40C to 50C. The cheap PSUs fall on their face at 30C.
Either way, I would let the PSU vent the case and have the rear exhaust deal with a ducted CPU's HS.
To help the old style PSUs with just one rear 80mm fan, I've bonded another low flow 80mm to the left side of the PSU's intake. The PSU fan is the second most important fan in the case.
Depending on the case. The rear exhaust could be flipped for intake then the ducted CPU
could have it's exhaust fan on the left side cover. Lots of ways to skin this cat
...Galvanized
Thanks to everyone that replied, I'll look into those sites.
Maybe I'm misunderstanding you or you misunderstood me. The theoretical duct would cover the top, bottom and left side of the heatsink (All directions from the vantage point in front of an upright tower with the motherboard on the right). The back would be ducted to the 120mm exhaust fan, and the front would be the only exposed side of the heatsink. Air would be drawn in the front, pulled through the duct and sent out the back. No less case air than without the duct would be exhausted; the air would just be pulled from in front of the cpu instead of behind it. The difference is the ducted exhaust would be hotter because it's all coming from the area of the cpu instead of only some.
Maybe I'm misunderstanding you or you misunderstood me. The theoretical duct would cover the top, bottom and left side of the heatsink (All directions from the vantage point in front of an upright tower with the motherboard on the right). The back would be ducted to the 120mm exhaust fan, and the front would be the only exposed side of the heatsink. Air would be drawn in the front, pulled through the duct and sent out the back. No less case air than without the duct would be exhausted; the air would just be pulled from in front of the cpu instead of behind it. The difference is the ducted exhaust would be hotter because it's all coming from the area of the cpu instead of only some.
obeseotron - I understand the plan of the mod...read Galvanized's previous comments about ducting CPU air through the PSU, and consider that you're doing the same thing (on a smaller scale) to the CPU.
Yes, the CPU heatsink expels a ton of heat into your system, and isolating that exhaust is a good idea. The problem is that you're going to be sucking warm case air over ONLY your cpu heatsink (and a minor amount through the PSU). You want to have the most cool air possible going over your CPU heatsink.
A solution, which I was trying to explain before, is to add an additional exhaust fan so you can expel more of the warm case air instead of it all being directed over the cpu.
Necro, that's a pretty good solution. Personally, I think that he missed out on some additional data, mainly his original case fan exhaust temp. The +4c difference in PSU exhaust temp is attributable not to there being more effective heat removal, just that hot air that was removed somewhere else originally is now being forced through the PSU. That setup is one of the few that a blowhole might actually be effective.
In my mind, the best possible ducting setup would be two ducts set up like this:
Duct one:
Intake from front of case directly to CPU heatsink, then directly to exhaust on back of case.
Duct two:
Same as duct one but for the video card.
Add a really low speed 120mm intake like the Akasa Amber or Nexus Real Silent for general case cooling (with the PSU as the exhaust for that) and you've got a winner.
The problem being finding space to mount two intake fans to ducts without running into HDs or optical drives. A side panel ducted fan would come in handy (in place of a front intake).
Obviously, this is all conjecture since I haven't set up a system like this for myself. I do have a rig in parts and a newly emptied case that I could play with though...
Well, take it or leave it.
-z
Yes, the CPU heatsink expels a ton of heat into your system, and isolating that exhaust is a good idea. The problem is that you're going to be sucking warm case air over ONLY your cpu heatsink (and a minor amount through the PSU). You want to have the most cool air possible going over your CPU heatsink.
A solution, which I was trying to explain before, is to add an additional exhaust fan so you can expel more of the warm case air instead of it all being directed over the cpu.
Necro, that's a pretty good solution. Personally, I think that he missed out on some additional data, mainly his original case fan exhaust temp. The +4c difference in PSU exhaust temp is attributable not to there being more effective heat removal, just that hot air that was removed somewhere else originally is now being forced through the PSU. That setup is one of the few that a blowhole might actually be effective.
In my mind, the best possible ducting setup would be two ducts set up like this:
Duct one:
Intake from front of case directly to CPU heatsink, then directly to exhaust on back of case.
Duct two:
Same as duct one but for the video card.
Add a really low speed 120mm intake like the Akasa Amber or Nexus Real Silent for general case cooling (with the PSU as the exhaust for that) and you've got a winner.
The problem being finding space to mount two intake fans to ducts without running into HDs or optical drives. A side panel ducted fan would come in handy (in place of a front intake).
Obviously, this is all conjecture since I haven't set up a system like this for myself. I do have a rig in parts and a newly emptied case that I could play with though...
Well, take it or leave it.
-z
- May 13, 2003
- 13,704
- 7
- 81
I'm thinking about trying to find / make something like the Akasa case has. That would work very well for my setup, and what I require for a duct.
- May 13, 2003
- 13,704
- 7
- 81
This Akasa case. Link is to a review of it, with lots of pics. I really like the design of the duct.
TRENDING THREADS
-
Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)- Started by DisEnchantment
- Replies: 24K
-
Discussion Intel Meteor, Arrow, Lunar & Panther Lakes Discussion Threads
- Started by Tigerick
- Replies: 19K
-
-
-
Facebook
Twitter