Recognise this cpu cooler?

I have a couple options. I'd like to keep with the Lian-Li cases which mean I may have to get a water kit for the processor because of clearance issues. With the graphics card fans aiming down, I've no idea why Lian-Li show the bottom fans blowing up straight into the downward graphics card fans. Looks like a severe flow issue there to me. I'd just have the fans the other way around & then to get some inflow, use the side fans to blow inwards.

How much air flow does the memory, mobo in general & the M.2 cards need?

Hmm, do all images have to be hosted off site?
GPU coole fans draw air into their shroud, then dump heated air out top, ends and bottom of shroud. So bottom intake move draws air into case and up into GPU fans. Keep in mind in an ideal world fans have their diameter clearance in front of them for optimum airflow (120mm fan should have 120mm intake clearance) .. cases rarely give us even a 1/6th of that.

I set my cases on open center caster bases (on 30-40mm casters) so I have 50-60mm from floor to vent (30mm caster + 3mm clearnace + 10mm base thickness +15mm case feet). Link below has images and instructions to how I make them:
http://phanteks.com/forum/showthread.php?510-Tips-amp-Guides

Also keep in mind punched metal vent grills restrict airflow by 60-85% of what an open hole flows. Front/top designer grills are often worse.

2x 140mm vents flow about the same amount of air as 3x 120mm vents .. same with 120mm vs 140mm fans of similar design and speed.

You might find guide to how airflow works and how to optimize case airflow of interest. I wrote it up years ago to help others understand the issues our cases present.
https://forums.overclockers.co.uk/t...-i-put-my-temp-sensor.18564223/#post-26159770
 
Very interesting stuff, thanks for that link!

Comparing a Lian-Li 011 Air & 011 Dynamic. Thinking that they both need CPU water because of the clearance. I now understand what the graphics card is doing also - thanks for that.

Do you have a cpu air cooler? If so, which one fits?
 
Last edited:
Very interesting stuff, thanks for that link!

Comparing a Lian-Li 011 Air & 011 Dynamic. Thinking that they both need CPU water because of the clearance. I now understand what the graphics card is doing also - thanks for that.

Do you have a cpu air cooler? If so, which one fits?
Problem isn't so much cooler clearance as case venting and resulting poor airflow. Lian-Li cases do not flow front to back, but instead flow air in all directions in/out from front, sides, bottom and top. Airflow in different directions creates turbulence and mixing of heated exhaust air with cool intake air.

Think of airflow as water flow and the case as being a van sunk in a pond with water flowing in and out of van windows/doors. remove windscreen and open back of van and water flows smoothing straight through van. Opens windows on both side and water flows smoothly from one side to other. But open all windows, doors, and rem

While 011 Dynamic has lots of 120mm vents, but 3 of the 6 in right side are worthless for air cooling on motherboard because they are in behind it. There is no venting beside PCIe slots, and 2x 80mm or maybe 90mm very restictive venting beside mobo I/O .. so even with PCIe slot covers removed there is very limited rear vent area. So we end up with 3x 120mm near front on right side and 2x 120mm bottom vents (becuase front most bottom conflicts with side vent .. also case would need to be raised on taller feet or open center caster base so bottom vents have needed space to draw air into them) for intake with only the PCIe slot openings and 2x 80/90mm venting over mobo I/O, and maybe the rear most top vent (can't really use other top vents as exhaust because they would be drawing heated air from GPU up into CPU intake airflow) to let air out .. significantly less out than in. 011 Air has all the same venting with additional front vent where glass panel is on 011 Dynamic so no more exhaust venting means same airflow issues for both cases.

Some reviewers even say 011 Air is not good airflow case.
 
Last edited:
Thanks for your reply.

The Air has space for 2x rear 80mm exhaust fans. I'd think of using 2x 140mm inflow in the front for the mobo, 2x 140mm inflow on the bottom for the graphics card, 3x 120mm exhaust in the top. The side slot would be an exhaust for the cpu water cooler. What do you think?
 
2x 140mm front and 2x 140mm bottom in with only 2x 80mm rear and 3x 120 top exhaust means much of the heated exhaust out of GPU is moving up into airflow to CPU so when gaming it's pre-heating the air into CPU cooler. The 2x 80mm vents only have about 25% of their area open plus their big flat areas between vent slots create lots of turbulence thus lowering their already low airflow even more ..end result is maybe 15% as much airflow as fully open area will. We want bottom vent to only supply as much cool air into case as GPU fan are using. Then we want GPU heated air moved back and out rear venting, not up into cool airflow to CPU cooler. And like I said if bottom vents are full of fans case needs at least 40-50mm of space between it's bottom and what it's setting on for bottom fans to even marginally be able to flow the air the should. These are problems with many cases but especially ones with severely limited rear exhaust like yours.

Case airflow is not about how many fans you can cram into a case. Good vs bad case airflow is like a sleek jet fighter slipping through the air vs a brick.

Pay attention to "How Airflow Works" and "How to optimize case airflow." Always remember and compare ourr case airflow to water moving through holes in a box with box being our case. It's all about how smoothly the air flow into case, to components, from components and out of case. It is not about how many fans it takes to fill all vents. ;)
 
Using a 280 aio for cpu mounted at top and a 240mm for gpu mounted on side. 3 120 on the front intake
May not be a problem but are both rads exhaust? If so, the 3x 120mm fans / vents have much smaller area / airflow potential than 2x 140mm and 2x 120mm fans on rads. So if intake fans are on filtered vents they will need to be running higher speeds than rad fans or dust will be sucked in all other holes in case. ;)
 
I've been through OCUK's stock of tower Coolers & these are the ones (I THINK!) Should fit in the 011 Dynamic & Air - There isn't that many.

My basket at Overclockers UK:
Total: £320.43 (includes shipping: £10.50)​

I'm quite aware The Phanteks is the odd one out in the list but I put that one in there to let the OP consider one of those as an alternative.
 
Phanteks is a good cooler but I wouldn't advise a flat cooler in this case. If it had side venting over CPU it would work, but as it doesn't it would be mixing heated exhaust with cool air with resulting higher temps and fan speeds making it louder as well.

Best cooling would be something like Scythe Fuma 2 which is 154.5mm tall so should fit. It cools very well and is 137x131x154.5mm in size with 2x 120mm fans. Or Scythe Mugen 5 rev. B but sadly OcUK is out of stock, but they are available eslewhere. ;)
 
May not be a problem but are both rads exhaust? If so, the 3x 120mm fans / vents have much smaller area / airflow potential than 2x 140mm and 2x 120mm fans on rads. So if intake fans are on filtered vents they will need to be running higher speeds than rad fans or dust will be sucked in all other holes in case. ;)


Both rads exhaust air
 
Duel fans might give give you a couple degrees lower temps on U9S, but also increase noise levels. I suggest you make sure your case is flowing air so cooler is getting at less then 5c above room ambient when both CPU & GPU are working hard. If it's 10-15c wamer the CPU will be hotter by similar amount. Air temp into cooler to CPU temp at same fan speed is a 1:1 ratio. Every degree warmer air is translates into same degrees hotter CPU is. Below link is to basic guide to airflow and how to optimize case airflow.
https://forums.overclockers.co.uk/t...-i-put-my-temp-sensor.18564223/#post-26159770
 
Duel fans might give give you a couple degrees lower temps on U9S, but also increase noise levels. I suggest you make sure your case is flowing air so cooler is getting at less then 5c above room ambient when both CPU & GPU are working hard. If it's 10-15c wamer the CPU will be hotter by similar amount. Air temp into cooler to CPU temp at same fan speed is a 1:1 ratio. Every degree warmer air is translates into same degrees hotter CPU is. Below link is to basic guide to airflow and how to optimize case airflow.
https://forums.overclockers.co.uk/t...-i-put-my-temp-sensor.18564223/#post-26159770

Thanks. There will be 3x 120mm inflow on the front, although that will be mixed with gpu hot air. I'm not sure how I can avoid that though.
 
Thanks. There will be 3x 120mm inflow on the front, although that will be mixed with gpu hot air. I'm not sure how I can avoid that though.
Read the guide in like I supplied in last post.
Don't use top vents over or in front of CPU cooler as exhaust because they will draw the cool air coming in front up and out while drawning heated air from GPU up to replace it and into CPU cooler. I have had to put a divider between CPU and GPU to keep GPU exhaust from moving up, but it's more work. As leak says, use a cheap remote sensor thermometer like indoor/outdoor, aquarium, terriam, or fridge/freezer thermometer to monitor air temp into cooler versus room air temp. Up to 5c above room is good. 3c or less is excellent
 
Thanks for the tips.

Is there some sort of mini smoke maker so I can inject the smoke to see the air pattern?
Using smoke trail doesn't work very well becuase it is quickly mixed with airflow and can't be followed through case. If you want to try it use incense sticks for smoke. 2 or 3 sticks create a nice amount of smoke. Don't bother with putting smoke in front of fans. they mix and push air out in a cone shape so big smoke trail will be lost. Video link below at 1:42 is beginning of smoke through case. Notice all PCIe back slot covers are removed. ;)
 
Back
Top Bottom