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Beginner's questions regarding fan control, speed variability, and whether bios fan control features are important.

post #1 of 6
Thread Starter 
So, I can usually track down whatever info I need via google, but I'm finally looking at getting a build together and I'm stuck on one piece of information.

Fan speeds.

I'm looking at various motherboards and I'm wondering how much value I should apply to bios fan control features, or whether none of that matters and I should just use speedfan.

So, can speedfan control all the fan connectors on most motherboads? I.E. is this universal across MSI, ASrock, Asus and Intel? Or is it a feature I need to be looking for?

And, can speedfan control the speed in a continuously variable fashion, or only in certain stepping's? For instance can you set anything between 600 and 1200 rpm or just say 600, 900, and 1200 rpm?

Should I place any value on a bios with complex fan control, such as the new Intel z77 or the higher end Asus boards?

I'm looking for complexly configurable automatic fan control basically, and any info helps. Not particularly interested in any manual controls or 5.25" bay fan controllers though.

Thank you.
post #2 of 6
When setup right, Speedfan can be great resource to have. Is it universal and work flawlessly across all types of motherboards? NO. ASUS motherboards are probably the better, in terms of fan control options, though if you are using the wrong fans, it doesn't matter who's MB you use.
post #3 of 6
it depends on how much you are spending, the easy thing is to spend a few bucks on a fan controller
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post #4 of 6
Thread Starter 
Ok, so to boil it down to the main question I have.

Does speedfan generally have completely variable speed control, or stepping?

Let's say with an Asrock z77 Extreme 4, will that motherboard have completely variable control via speedfan?

Sorry if this is obviously stated somewhere, I just couldn't find it clearly stated, I can't even find exactly how many fan connectors it has.

I know the Asus P8Z77v- Pro and the Intel dz77ga-70k both have 4 fan connectors + cpu fan and they have precise fan profile adjustment. Failing to find details on asrock's fan control I will probably buy one of these to be safe.

The Asrock specifications only state "- CPU/Chassis/Power FAN connector" in the connector listing.
post #5 of 6
Speedfan is only going to be able to control fans which are pwm (i.e., 4-pin) like the cpu fan header. 3-pin fan headers on a mb will only allow you to see the rpm of the fan, not control it. And if a fan header is 4-pin, speedfan will provide a linear incremental control, not step-wise. Download speedfan and go through the Help document as to how it works.
post #6 of 6
I can control 3-pin fans just fine with some headers of my Asus X58, Asrock Z68 and Gigabyte Z68 boards.
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