Just got the IETS 300. In a quick test with my Alienware M17R4 i7 1087, 32gb ram, 3070 gpu using Time Spy, GPU was 64deg, CPU 93deg, compared to the KLIM Wind, GPU 67deg, CPU 94deg. The IETS was set on 2 (Medium) The KLIM on max. What I don't like is the sound. While not real loud, it has a buzz/hum sound that I find annoying. The sound changes pitch and volume with the speed. I just changed out one of my cooling fans because it was sounding like this. The KLIM is much quieter with more of wind/air sound, much easier to ignore.
It definitely does what it says, with the sealed bottom, the air is forced through the vents. The laptop fans only run while gaming, and under high load.
Personally, I'm not sure I can ignore this sound, I don't even notice the KLIM.
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After an evening of gaming, the IETS works well. With its fan speed set on 2, (there are 4 speeds, 0, 1, 2, 3 and off) CPU temps were running 71 -78, GPU was 58 - 62. The KLIM was about 5 - 7 deg warmer, and laptop only fans were 10 - 20 deg warmer. I just used the MSI Afterburner overlay to see how things were going.
The good thing was that I didn't notice the fan noise while gaming, the audio drowned it out. So, I'll just turn it on while gaming, my temps are good without it for everything else.
***UPDATE*** After few days with the IETS 300, I'm very happy with it. No other cooler I've tried has come close. After a few hours of general use, internet surfing, and mostly Youtube, etc. According to HWiFNO64, with IETS300 fan setting on 1, average CPU temp is 40C and CPU is 35.5. Not using Youtube, averages drop to CPU 35c and GPU 32.8c.
