Mobo Fan Header PWM Control - R/C BLDC ESC?

[LabRat 891]

I'm researching re-using an HP Blade C7000 blower (HP Active Cool 200) for an anachronistic build with only 8cm ventilation cuts.
I'd like to PWM mobo-control one (or 2) of these insanely powerful (200+W) blowers, filtered using cheapo automotive 'cone filters'. (Noise is a minimal issue. Blower(s) would be acoustically insulated, and normally low-speed)

HP's super cool computer fans

Inspired by radio controlled model airplanes, HP is developing new fan technologies to cool hardware more efficiently. I talked to Wade Vinson, HP's fan man and thermal technologist, about the new fan technology, which he said will consume about a third of the power of current computer fans.

www.zdnet.com

No one seems to have published how to control the EDF-derived BLDC blower using the in-built ESC; most-everyone just plugs in a cheapo ESC to the BLDC.

So, I figure I'd have to circumvent the integral ESC, like everyone else...

My question:
Most BLDC ESCs can be controlled by a simple PWM generator (typ. 5khz 5V, IIRC).
Will ESCs accept PC-standard ~21-28khz 5V PWM for control? So far, the only difference I'm seeing is the PWM frequency...

Basically, can I just plug the control-input of the ESC to a fan header's PWM?
Please note: I'm unfamiliar with 'hobby' BLDC motors and their drivers/ESCs, and only moderately-aware of how 4-pin PWM PC fans are controlled .

 

[LabRat 891]

Research update:

not me asking the Q here, BTW. However, the A's, eluded towards what I'm looking to do.

This is my first stumbling-upon what the control loop PWM spec is. ~50hz, doesn't sound easy to adapt to mobo fan PWM spec.
Especially for someone like me, that mixed up motor driving freq. w/ control freq. :smh:

I wonder if anyone has something on github, etc. that's fairly setup and go that could be ran off an ATmega or other inexpensive microcontroller?

'Pretty sure I'm not the 1st person to want to either:
A. build DIY BLDC fans
or
B. re-use drone parts in a PC (for fun, or research, or w/e.)

I've seen my question(s) asked before (elsewhere) but, I can't even find those questions I'd previously stumbled-upon (years ago).

In simplest terms:
I just want to control a BLDC ESC off a motherboard PWM-fan header ('12V' ESC+BLDC separately powered by PCIe power or EPS power.)
(note: from what I'm getting, what I want, would also facilitate a servo-operated 'intake/exhaust vent door' for modded cases. From everything I've seen, 'basic Servo Testers' and ESC control PWM-input, seem to overlap, entirely.)