120mm mounted in 3 x 5.25'' Bays

Deano12345

My motherboard temps have been a little on the high side (mid 40's in BIOS) but I cant get any more computer stuff till christmas.I was sitting around today and was thinking about if I could use the spare CM 120mm that I have to cool the mothboard down a little.All the predrilled holes aren't in the right places so I improvised.



And heres one with the Drive bay covers on



Its working a charm at the moment,dropped my CPU temp by 2 degrees and my motherboard by 8

PogMoThoin

But my guess is its heating up somewhere else, having 2 fans blowing in and only one blowing out is only going to create hotspots. You can only blow in whats being sucked out. To even the balance You need to add another fan to the rear to expel the heat, you want to keep the exhaust fans at a higher flow rate then your intake, to insure that the hot air leaves your case and is replenished by nice cool air. This is the reason the front fan was low, to get cool air to the gpu then the cpu cooler (heat rises), now the gpu isn't getting the heat out



http://www.svc.com/generalcoolingguide.html

Deano12345

PogMoThoin wrote: »

But my guess is its heating up somewhere else, having 2 fans blowing in and only one blowing out is only going to create hotspots. You can only blow in whats being sucked out. To even the balance You need to add another fan to the rear to expel the heat, you want to keep the exhaust fans at a higher flow rate then your intake, to insure that the hot air leaves your case and is replenished by nice cool air. This is the reason the front fan was low, to get cool air to the gpu then the cpu cooler (heat rises), now the gpu isn't getting the heat out


http://www.svc.com/generalcoolingguide.html

I had 2 exhausts and only the one intake,so I was just balancing things out

PogMoThoin

Deano12345 wrote: »

I had 2 exhausts and only the one intake,so I was just balancing things out

Ok, I'll shut up now

Deano12345

PogMoThoin wrote: »

Ok, I'll shut up now

Haha :P:D

leninbenjamin

PogMoThoin wrote: »

But my guess is its heating up somewhere else, having 2 fans blowing in and only one blowing out is only going to create hotspots. You can only blow in whats being sucked out. To even the balance You need to add another fan to the rear to expel the heat, you want to keep the exhaust fans at a higher flow rate then your intake, to insure that the hot air leaves your case and is replenished by nice cool air. This is the reason the front fan was low, to get cool air to the gpu then the cpu cooler (heat rises), now the gpu isn't getting the heat out



http://www.svc.com/generalcoolingguide.html

hmm, i thought it was the other way around? that you want to create more pressure inside the case in order to push the air through the system components... I know this is the case in my HAF, the two intakes create 220CFM whereas the exhausts 170CFM.

L31mr0d

leninbenjamin wrote: »

hmm, i thought it was the other way around? that you want to create more pressure inside the case in order to push the air through the system components..

I was under the same impression. I've always configured my systems to have a high positive pressure rather than negative (i.e more intake than out take.) and it's always worked for me.

Also, OP, nice mod. It was one of the first one I did myself when I started building PC's.

This is the 12cm fan mod I did after the 8cm fan mod I did before it wasn't cooling enough:

http://www.boards.ie/vbulletin/showpost.php?p=52001552&postcount=1

Let us know if it helps with your chipset temps. Have you already reseated your chipset heatsinks with a better TIM?

Also. I'd recommend modding a fan into the side of your case, blowing down on the chipset itself would help a lot more than blowing across it.

One last quick mod would to but some form of dampening material at the top and bottom of that 12cm fan to stop reverberation inside your case which will make it noisier. Some little pieces of styrofoam would probably work.

Deano12345

L31mr0d wrote: »

I was under the same impression. I've always configured my systems to have a high positive pressure rather than negative (i.e more intake than out take.) and it's always worked for me.

Also, OP, nice mod. It was one of the first one I did myself when I started building PC's.

This is the 12cm fan mod I did after the 8cm fan mod I did before it wasn't cooling enough:

http://www.boards.ie/vbulletin/showpost.php?p=52001552&postcount=1

Let us know if it helps with your chipset temps. Have you already reseated your chipset heatsinks with a better TIM?

Also. I'd recommend modding a fan into the side of your case, blowing down on the chipset itself would help a lot more than blowing across it.

One last quick mod would to but some form of dampening material at the top and bottom of that 12cm fan to stop reverberation inside your case which will make it noisier. Some little pieces of styrofoam would probably work.

Dont need to mod my side,it already has pre drilled holes for 1x200mm fan or 2x120.Do agree that might help though.

Reseating the heatsink is awkward too,I have to take out my HSF to get at my NB cooler.

You cant tell from that pic,but that fan is atually suspened so theres no noise other than the fan itself

It dropped my chipset temps 8 degrees and my CPU by 2

Anti

i like the mod, good idea: )

Deano12345

Anti wrote: »

i like the mod, good idea: )

Thanks Anti

Also,for anyone wanting to try this,the metal in the drives bays is sharp so be careful,you dont cut yourself to bits,my hands have little cuts all over for them.

Ahh,the things us modders do :rolleyes::p

Venom

Speaking of fans, anyone know the best place to get 2 230 x 200 x 30mm - Red LED case fans for a HAF 932?

Anti

you tried pc-look.com ?

They have a huge section of fans. Just had a quick look and they do infact stock them

http://www.pc-look.com/boutik/Prod_Cooler_Master_230-mm-Lighted-Fan-for-Cosmos-S-RC-1100-or-HAF-RC-932-Red-LED__28874_en.html

Venom

Anti wrote: »

you tried pc-look.com ?

They have a huge section of fans. Just had a quick look and they do infact stock them

http://www.pc-look.com/boutik/Prod_Cooler_Master_230-mm-Lighted-Fan-for-Cosmos-S-RC-1100-or-HAF-RC-932-Red-LED__28874_en.html

Ta mate will keep an eye out for when they back in stock

Wonder wtf CM dont sell them direct in there shop :eek:

Anti

ask and ye shall receive

Front: 230 x 30 mm red LED fan x 1, 700 RPM, 110 CFM, 19 dBA

Side: 230 x 30 mm standard fan x 1, 700 RPM, 110 CFM, 19 dBA (support 120 x 25 fan x 4)

Top: 230 x 30 mm standard fan x 1, 700 RPM, 110 CFM, 19 dBA (support 120 mm fan x 3 or 120 mm x 1 + 230 x 30 mm x 1)

Rear: 140 x 25 mm standard fan x 1, 1200 RPM, 60 CFM, 17 dBA (support 120 mm fan x 1), 35,000 hours life expectancy