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Antec 1200 Airflow questions (I have pictures!)

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Ahhh I see. What is your take on the heatsink?

Also, do I absolutely need jumpers for the HDDs? What is a good way of setting them up?
 
Check the jumper settings on the label of the HDD. Sometimes they come set default at 1.5gb/s - should be set to 3.0gb/s.
 
Sekkai, first let's sort out the names of the plugs just so everbody is on the same page...

molex = what you've been calling 4-pin
3-pin = the plug from the fan you have in this photo dsc00470oui.jpg, which is NOT one of the stock case fans
4-pin = looks JUST LIKE the 3-pin (same shape, etc) but it has 4 instead of 3 pins.

OK, with that out of the way... The stock case fans have molex connectors AND a speed control. As you've noticed, the speed control for the rear and top fans are on the rear of the case. Low is the only setting I use. Med is a bit too loud for my taste, and high is a deafening roar. YMMV, but that's my $0.02. The front fans have molex connectors and a speed control in the front of each HDD cage. It looks like a knob that you can turn. I usually leave these on low, except for the topmost fan which I will sometimes crank up when the comp is under high load since it blows air right across the RAM and NB heatsink.

NONE of the stock case fans will plug into the motherboard. At all.
[Personally, I wouldn't use a fan controller with the stock case fans. The built-in speed controls will do that for you. If you replaced them with aftermarket fans, then a fan controller would be warranted]

The fan you have for the CPU heatsink will plug into the 4-pin header marked CPU on the motherboard. IIRC, its towards the top of the mobo near the RAM (double check, it is labeled). It's OK if the CPU heatsink fan has only a 3-pin, it will still fit in the 4-pin header on the mobo (like RAM it only fits one way, there is a notch). The other case fan you have with a 3-pin (dsc00470oui.jpg) you can plug into one of the 3-pin headers on the mobo marked SYS (maybe SYS_1, SYS_2 or something).
 
What do you recommend for the optional side case fan? It's a Thermaltake blue LED fan, 120 mm, and it comes with (from what I can tell) both a threepin and a molex. I could either plug the threepin into the mobo (but someone recommended against this), or plug the molex into one of my PSU's molex cables.

Right now I have my center fan (which is installed on the center HDD bay to help cool the 295), which is threepin, plugged into PWR_FAN next to the RAM.


Also, I realized my PSU may be upside down (Corsair 850W)... is the fan on that baby supposed to be facing up or down?
 
PSU fan should be facing up. it will (sorta) suck air from the mobo area and blow it out the back.

It's kinda up to you for the side fan (I don't use one, but i don't have a high-end card). If you connect it to the mobo via 3-pin then the motherboard will control the speed. The hotter it gets, the faster it spins. If you connect it via molex then you have to control the speed with either a fan controller or maybe it has it's own speed control.

I think the recommendation against using the 3-pin was moreso a recommendation *for* using a fan controller. I don't think they knew the case fans have their own speed controls, most cases don't have this feature.

It's not too big a deal, but try to plug the case fans into the SYS_FAN headers, not PWR_FAN. Not a big deal though. It's only because I like following the labels.
 
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