PC Tech Thread

Also without sounding stupid is there much difference between a 12 and 14cm fan?

For some reason the 14cm is almost double the price of the 12cm.

2cm

Awww come on you knew someone would say it!

Also without sounding stupid is there much difference between a 12 and 14cm fan?

For some reason the 14cm is almost double the price of the 12cm.

Assuming a 25mm hub, and that the frame takes about 3mm off each side.

120mm Fan area = (pi x (120-6)^2)-(pi x 25^2)
= pi x (12996 - 625)
= pi x 12371

140mm Fan area = (pi x (140-6)^2)-(pi x 25^2)
= pi x (17956 - 625)
= pi x 17331

17331 / 12371 = 1.4009

so simplistically, a 14cm fan has 40% more driven area than a 12cm fan, so can spin even slower than a 12cm fan for the same CFM, causing less turbulence.

But a 12cm fan will be quieter?

Why?

I don't know I just assumed that because it was mentioned up thread.

Quieter than a 90mm fan with more aggressive blade pitch.

What Emyr said, but large slow fans collect more dust so tend to go out of balance more than smaller, faster fans and then end up noisy.

What hippy said.

I didn't say they were noisier because of speed or anything... but that they are noisier, which tends to be because of collecting dust and being unbalanced.

We're all a little unbalanced. Some more than others..

Thanks guys ordered

3 of ARCTIC AFACO-120P0-GBA01 F12 PWM 120mm Case Fan

Akasa AK-CB002 PWM splitter - smart fan cable

Split with the splitter run all off the CPU fan and hopefully have a nice quiet cool computer.

May end up ordering more fans but this should be OK for now.

Can't you just hoover your fans?

Spenceey I've got a load of spare Silent PC Review recommended fans at home I need to sell, sounds like I'm too late though?

Can't you just hoover your fans?

Safer to use a can of compressed air to avoid issues with static.

Or a damp cloth.

I just aim a garden hose at mine. Make sure the PC is running so you get full coverage of the fan blades.

Next job is more RAM and SSD - both of which seem to be high prices at the moment.

RAM - 12800 ddr3 - only have 4gb at the moment. - may go for 2x8 or 2x4 depending on prices.
SSD - really 256gb - wait until they cross the £100 mark.

If you guys see any that come up cheap let me know!

What version of Windows are you running? If it's 7, Home Basic only supports a maximum 8GB of RAM. You'll need at least Home Premium for 16GB, and Professional for any more than that.

See here for details.

Ah shit - didn't think of that.

Just checked it's home premium so supports up to 16gb.

Thanks for that though Brun.

^^ Unless you hack it. I hacked mine to allow 16Gb. It's pretty easy:

http://feilipu.posterous.com/windows-7-starter-with-up-to-128gb-ram

or just install Win 7 ultimate

But then you have to pay for a Win 7 ultimate licence...

I just finally got around to a new pc

i5 3570K
MSI Z77A-GD65 GAMING motherboard (yeah it's gimicky but $55 off at newegg)
MSI N670 PE OC GTX graphics card
Corsair HX750 psu
Crucial Ballistix Sport 16Gb ram
Seagate Barracude 2TB drive
Corsair Hydro H80i water cooling
LG DVD Burner
Fractal Design Define R4 case

Not too bad at 880 sterling (inc tax/delivery/etc...)

The motherboard I just picked as it was discounted and is new (bundle deal with CPU). I realized I spent a day comparing them, and the wasted work hours would have paid for a new board regardless.

Nice case but I wouldn't have bothered with water cooling.

Watercooling H80i was like 88 bux ... cheap as chips

Oh and I already have an SSD, just got the 2Tb drive for local storage (have a SAN as well)

$88 that's cheap.

More like £80 over here.

Good choice on the i5 - haven't even needed to OC mine - and won't till I need too.

Oh and a long shot wonder if you guys can help.

One of the push pins is broken in my Artic freezer 7 cpu cooler - don't suppose any of you would have a spare?

What CPU?, think i might have one for you.