new gpu high temperature

Faith said:

What 1660Ti do you have exactly? Depending on the AIB cooler, 80-85c is normal for many cards and within the threshold. GPU Boost 4.0 is made to maintain high clock frequencies at and around 80c on Nvidia cards. Anything over and the card will simply throttle the boost frequencies. Again, it depends on the AIB cooler.

Hi i have asus dual 1660ti and i am using with i5 2500 at 4k its butter smooth but temperature is high why auto fan is not enough in msi afterburner

Faith said:

That card has a bad cooler design and does not leave much headroom for the boost clocks. You can increase the fan curve to ca. 65% in Afterburner - or limit it to 70c - or leave it as is because the card should throttle its boost frequencies when it reach over 80c automatically. The Asus Dual is hot by design unfortuantely.

Limit to 70 degree mean?

Faith said:

That card has a bad cooler design and does not leave much headroom for the boost clocks. You can increase the fan curve to ca. 65% in Afterburner - or limit it to 70c - or leave it as is because the card should throttle its boost frequencies when it reach over 80c automatically. The Asus Dual is hot by design unfortuantely.

I thought that was surprising, but some reviews confirm that: ASUS Dual GeForce GTX 1660 Ti DUAL-GTX1660TI-O6G Video Card - Newegg.com

I'd suggest using afterburner to set a custom fan profile that gives a higher fan speed above some GPU temperature. I hope that the fans are quiet enough that running them up won't be too annoying.

I recently bought a Gigabyte RTX 2080 Super card with a "blower" type cooler. It ran cool enough, but I returned it because it was intolerably noisy at load. (Stock clocks.) I didn't expect that sort of thing would be on the market at this time, and I would have guessed that most add-in-board style coolers would be superior in both cooling and noise. I must be a cockeyed optimist.

tushar4544 said:

should I remove or not its a new gpu

I'm very skeptical that removing the plugs would help at all. The sockets that they cover wouldn't allow significant additional airflow.

If you removed the plugs, dust may be an issue, but more when the PC is turned off. The airflow ought to be out the back of the case, so the fans shouldn't draw additional dust into the sockets.

Faith said:

Right, choose what you think is best for you. I suggested 70c for 65%, but you probably need something more aggresive because the cooler is not that great. A more aggresive fan curve = cooler card, but more noise. If you don't feel comortable adjusting anything, just leave it as is. The card is hot, but that just how the card was designed. If it stays at 80-85c then it's within the threshold. Much over that (90c+) and the card will start to thermal throttle which you definitely don't want. Above 100c and the card can shut down your system.

How do i set 65% for 70° in afterburner where to find option

That looks a poor/inefficient/small design of cooler considering it could be dissipating 120 watts.
The fan speed should be at 100% with 100% GPU usage. Does not matter what the default fan profile of your software is.

I'm not surprised at your temperatures at half fan speed.