KFA2 GeForce RTX 2070 EX in review - Price disanotomy doesn't have to be cheap, but quiet and cool | igorsLAB | Page 6

The opposite of expensive does not always have to be cheap. In fact, it would also be inexpensive. This is exactly what KFA2 must have thought when the GeForce RTX 2070 EX was designed. Many things were taken over here from the larger KFA2 cards and also the cooler has a decent portiönchen hip bacon, so that nothing burns. I take a closer look at this...

The fan stop works, but the card triggers the start pulse several times, which can also be seen beautifully by the curves. This is annoying in that it is the only mistake I could find on this card and because it is completely unnecessary. The hysteresis should be slightly revised here and the shut-off temperature should be lowered to make the fan run better and more stable

Let's look at the measured values again in direct comparison to the Founders Edition as a tabular listing:

	KFA2 RTX 2070 EX	Nvidia RTX 2070 FE
Fan speeds Open Benchtable Maximum	1287 rpm (Gaming, Peak)	1635 rpm (Gaming, Peak)
Fan speeds Open Benchtable Average	1275 rpm (warmed up)	1605 rpm (warmed up)
Fan Speeds Closed Case Maximum	1368 rpm (Gaming, Peak)	1759 rpm (Gaming, Peak)
Fan Speeds Closed Case Average	1345 rpm (warmed up)	1721 (warmed up)
Noise Emission (Air) Average	37.1.0 dB(A), Closed Case (Peak)	39.1 dB(A), Closed Case
Noise Emission (Air) Idle	Fan stop	31.3 dB(A)
Sound characteristic / hearing impression	rushing, engine noise, low frequency peak	rather noisy, hardly lower-frequency shares
Coil-feathers/electric noises	low, only for very high FPS numbers and for load changes	low, only for very high FPS numbers and for load changes

Sound Spectrum

The measured 37.1 dB(A) is based on the measured 1345 rpm in the closed housing. We have applied the same gaming load to the open set-up in the measuring room, but the fans are limited to approx. fixed at 1350 rpm in order to be able to adjust this value exactly. The result is audibly below the level of the Founders Edition, whereby the cooling with similar power consumption is significantly better.

The sound backdrop is present and you can also perceive and measure (lower-frequency) motor noise (see Peak on the spectral analysis above) for strong noise. The noise comes from the turbulences of the rotor blades and is defined by a rather oscillating noise of the two fans. You could throttle the fans even further by setting the target temperature to 70°C.

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