whats the problem???

Depends on the fan and location. I've got my 200mm fans running off molex to keep the air moving (and for the location/ needs its better), but they are bottom front and side, then my fast fans (high RPM) plugged into the MOBO so the system decides when they should run fast.

running them off molex will mean they run full speed all the time, there is nothing telling them to slow down. This means you will be generating more noise and using more power than perhaps necessary.
 
I think the 5.25 bay covers in your case are filtered covers.
Fan can be powered from any sources. I have used may Antec tricool 120mm fans. They have hard drive molex connector and either a 3 speed selector or variable knob speed controller on them.
http://www.overclockers.co.uk/showproduct.php?prodid=FG-004-AN
Google
Intake fan in a 5.25 bay (warning - graphics)
for link to 29 page thread
My case has 2x 120mm front intakes and 1x 140mm bottom intake. The PSU intake is on bottom and exits back. I have 1x 120mm exit back and CPU cooler is 140mm ducted out top HD 5770 Silent Cell GPU is passive cooling with air movement from bottom fan to back 120mm exit and CPU cooler intake. Case exit air is 3c warmer then room temp.
Wife has 4x 120mm Antec TriCool fan intakes; 1x front, 2x left side & 1x right side. Her PSU in in top with inside intake and exits back. CPU cooler is ducted out back. All PCI slots in back are open to allow HD 6850 GPU exit.

Adding a fan in your unused 5.25 bays will give you 2x 120mm intake. Getting cooler that exits back with a duct from back of cooler to back exit fan will move all heat from cooler out back. So one fan in to one out. Depending on how your GPU cooler directs hot air out you might open the extra PCI slots for second fan intake fan air to exit. ;)
 
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I had bsod earlier, then restarted, so into bios and upped the voltage 1 notch back up to 1.4v. Gonna look for a 140 fan then with some sticky foam! As they are bigger they spin slower so will give it 12v and as fan for hd6770 blows down, I will get a small fan to fit in the pcie bays as you mentioned and secure with foam
 
Make sure a 140mm fan will fit. The faster the fan spins the louder it is.
Probably won't need an exhaust fan to move air out.

R2 case has back venting by PCI slots and 120mm fan vent with top having 2x 140mm vent with 2x 120mm fans intake front and 140mm bottom. Only exhaust is 120mm back and duct from 140mm exhaust fan on CPU cooler. All fans are PWM (except PSU) and speed controlled by CPU fan on motherboard PWM socket. Socket sends PWM signal into splitter to all fans. Power for all fans is from PSU molex connector so motherboard is not overloaded by fan demand. Case would be even cooler if I increased case fan speed but I don't feel a 3-4c increase is a problem.

Your case has PSU fan drawing at back of top exhausting out back. If you duct the CPU cooler out back the air going to PSU intake will not be pre-heated by CPU. ;)

It's better to have more fans in (filtered) than out.. less dust problems.
 
What would i use for ducting? I would only use a 80mm fan on pcie slots as opposite the pcie slots is f12 fan. Then the fan in 5.25 bays also drawing air in from top front. Psu sits on bottom drawing filtered air up and exh bottom rear or is the 120 fan top rear of case above vrm enough as a sole exh.?
 
Well that's one for the books! Coolermaster website shows different layout..
Explains my confusion.
Picture of NH-U12P with TY-140 fans installed using custom shrouds and duct out top
NH-U12Pmemside.jpg

You can't see top fan as it is inside of duct to top exhaust.
 
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Yes. Be very careful with the cable to connector bit because heat shrink makes cable rigid into connector causing wires fatigue break. I had some good 6:1 heat shrink I used to fix problem.

Gelid do a 1-to-4 PWM splitter for £4.99 that I think is better.
 
Ive got the gelid splitter bookmarked ready. Think a 120 fan will be the order and pad out with foam. does the gelid splitter come with 4fans + 1cpu fan connector or is cpu connector one of the 4?
 
1 fan connection is split into 4 fan connections. CPU fan plus 3 other fans for a total of 4 fans.

One socket has 4 pins; PWM signal from motherboard, RPM signal to mother board, 12v and neutral/ground from molex.

There is only one plug and it has has 2 pins; RPM signal from fan; PWM signal to all 4 sockets.

Other three sockets have 3 pins; PWM signal from motherboard, 12v and neutral/ground from molex.

In PWM fan the PWM signal triggers 12v pulses to fan motor. The RPM signal from original/master fan is used by motherboard to determine how fast the 12v pulses need to be for that fan motor maintain RPM motherboard wants fan to run. All other fans are sent same PWM signal. Their RPM is not monitored
 
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The important thing is to make sure the CPU fan is the master fan sending RPM to motherboard because CPU heat is what you want to keep under control. Motherboard increases or decreases fan RPM as CPU heat increases or decreases. All the other fans increase and decrease rpm at same time.
 
doyll said:
1 fan connection is split into 4 fan connections. CPU fan plus 3 other fans for a total of 4 fans.

One socket has 4 pins; PWM signal from motherboard, RPM signal to mother board, 12v and neutral/ground from molex.

There is only one plug and it has has 2 pins; RPM signal from fan; PWM signal to all 4 sockets.

Other three sockets have 3 pins; PWM signal from motherboard, 12v and neutral/ground from molex.

In PWM fan the PWM signal triggers 12v pulses to fan motor. The RPM signal from original/master fan is used by motherboard to determine how fast the 12v pulses need to be for that fan motor maintain RPM motherboard wants fan to run. All other fans are sent same PWM signal. Their RPM is not monitored
Click to expand...

Ok I get that, so the 4 fan splitter is sufficient for me... Cpu fan, exhaust fan, and 2 entrance fans. I know I have just one molex on my psu and isnt used so this splitter will make v good use of it. I wish I could manage my wires better but the loom is a but too thick to fit under the board even with the 6mm stand up plugs I screw and hold board onto. But I guess il find a way!! I have an external hdd id like to strip and fit inside into one of my 3.5 bays, is it possible to remove the usb connectivity and connect via sata?? I dont think I can fit just a fan in the 5.25 bay as the face isnt filtered, its a solid cover so will need that lian li thingy I think??? Also if you notice my screen prints on cpuz the voltage drops when speed is increased, is it lower cuz the speed has increased? And is it a general plan to keep near to 1.4v in cpuz thus meaning I need a higher vcore in bios??
 
For cable management I use zip-ties and Velcro strap
http://www.ebay.co.uk/itm/270656141487?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649
Velcro strap is handy for all sorts of organizing. Use it for spare cables, cables & wires under desk, etc. Just cut the length you need and use. When you want to change things pull loose and re-organize. ;)

If your external HDD case has a SATA HDD (and it probably is) in it should be no problem.

I don't know much about overclocking so will let someone who is knowledgeable help you with that.
 
So 5c cooler. Good. How about Prime temp?

Assume you realize AK-183 will run max rpm only PWM splitter cable.

Have to think on the bay vent cover. Maybe modify a box to fit... with a filter vent.
 
prime temp gets to about 63c, but i cancel it after a while as i dont wanna fry my cpu. but its stable. thinking of dropping it to 3.8 and dropping vcore a bit to try lower the temp. but those temps are with the freezer 13 fitted, as said quite "poor" in comparison to like zaward vapor where its only 12c higher than ambient temp. wasnt too sure what you mean by run max rpm only pwm splitter cable though? i was given the fan as asked my dad to get hold of one if he saw a well priced fan so got me that. dont think im too fussed if its max rpm, as long as its drawing air in. or is it worth perhaps using that ak-183 as a side fan and get the one you linked to me to fit in the 5.25 bay?? or is 3 in fans and 1 out a bit too much??

ive never modded anything pc wise before....my vent in front of 3.5 bay was already filtered and ready for a 120mm fan, perhaps fabricate some sort of plastic frame and use some ..ahem.. cheap tights as a filter??? or just say 5od it and buy the lian li 5.25 bay adaptor with fan and filter on it ready to go for a mere £18???

p.s thanks for the message, ive got that saved in my favourites already, so il look at it proper when i get an hour ... its a wicked post mind.
 
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