Noctua NF-R8 and NF-S12 Cooling Fans

The Fans In Detail

The Fans In Detail

Both the NF-S12 and NF-R8 Cooling fans utilise Noctua's SSO-Bearing in order to attain silent operation. The SSO-Bearing is a magnetically centred, self lubricating oil-pressure bearing that surpasses current types of ball, sleeve and liquid bearings in long-term stability and quietness thanks to its new, improved principle of operation. It is through the use of the SSO-Bearing that Noctua are able to provide a stellar 6 year warranty and impressive 150,000h MTBF. I have included an illustration of Noctua's SSO-Bearing to further reinforce the theory.

Noctua's SSO-Bearing

To further assist with silent operation Noctua has included an Ultra-Low-Noise adaptor (U.L.N.A.) that allows for a further reduction in noise emission. The U.L.N.A is essentially a simple 12v to 5v adapter that allows consumers to under-volt the existing voltage supplied to the fan for even more quieter operation. You will notice on the red wire that it has some sleeving on the right hand side, under which there resides a resistor.

Noctua's ULNA adaptor

Another implimentation that Noctua has manufactured into their fans, is the use of Raised Blade Design (NF-R8) and Straight Blade Design (NF-S12). Essentially, both of these design features are intended to provide maximum cooling efficiency without the added drawback of higher noise emission when used at a higher rotational speed.
But don't just take my word for it, I'll let Noctua's technical information get the point across.

"In order to make their products more silent, fan manufacturers usually simply reduce RPM without adapting the rotor design to the modified fluid dynamic parameters", explains Mag. Manfred Stadler MBA of the Austrian Institute for Heat-Transmission and Fan Technology. "Using a blade geometry specifically optimised for lower speed ranges like the Noctua Straight-Blade-Design allows for much better performance than simply reducing RPM."

Noctua NF-R8 and AC 8L Noctua NF-S12 Upright

If you look closely enough at the Noctua fan blades in the images above you can see the Raised Blade and Straight Blade designs quite clearly. I have included an AC 8L fan in the first image, so you can compare the two blade structures. I must say that I'm impressed with Noctua's NF Series of fans so far; from the evident R&D work that has gone into them, the build quality and even the braiding on the cable which makes a nice well rounded product. But the proof is in the pudding...How do they perform?

Head on over to the next page to find out if they're worth outlaying your hard earned cash on.

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Most Recent Comments

18-01-2007, 11:32:45

Nice job PV. Decent looking set of fans!Quote

18-01-2007, 11:41:23

Silence is golden...or was that brown Quote

18-01-2007, 11:50:35

Aye silence is brown. They are awesome fans. I know, I've got two of em Quote

18-01-2007, 11:53:25

Originally Posted by name='Ham'
Nice job PV. Decent looking set of fans!
Originally Posted by name='XMS'
Silence is golden...or was that brown
Originally Posted by name='Kempez™'
Aye silence is brown. They are awesome fans. I know, I've got two of em
Thanks lads, and like I said in the review the colours are really starting to grow on me. They really are awesome fans though Quote

18-01-2007, 12:06:09

Originally Posted by name='PV5150'
Thanks lads, and like I said in the review the colours are really starting to grow on me. They really are awesome fans though
I actually like the colors myself. Quite different. Also, great CFM for such a low noise output May have to invest in a pair of these.Quote

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