Not all of EVGA's recently unveiled GeForce RTX 2060 KO Gaming (opens in new tab) graphics cards will use the TU106 silicon, which is the most high-end die available for the RTX 2060 (opens in new tab). There are RTX 2060 KO Gaming cards featuring TU104 silicon, more specifically the TU104-150 die, as TechPowerUp (opens in new tab) discovered.
According to VideoCardz (opens in new tab), some of these cards will come with the TU106 die as well.
Nvidia utilizes TU106 for its RTX 2060, RTX 2060 Super (opens in new tab) and RTX 2070 (opens in new tab). The TU104 die, on the other hand, is for the higher end models, such as the RTX 2070 Super (opens in new tab), RTX 2080 (opens in new tab) and RTX 2080 Super (opens in new tab). Therefore, it's reasonable to think that the primary motivation behind sticking the TU104 die inside the RTX 2060 KO Gaming is cost reduction.
The TU104-150 dies found in the RTX 2060 KO Gaming are most likely those that didn't make the cut for the more powerful models. Keep in mind that the TU104 die is a much larger chip than the TU106 and houses up to 3,072 CUDA cores. The RTX 2060 is specced at 1,920 CUDA cores. So as long as 60% of the CUDA cores are good, the TU104 die will work just fine for a RTX 2060.
For the most part, the performance difference between a RTX 2060 with the TU106 die and another with the TU104 die should be insignificant. However, it has been proven that the TU104 die performs better with Blender.
Unfortunately, it's impossible to tell which die you're getting. Not every RTX 2060 KO Gaming will use the TU104 since EVGA utilizes whichever die is available at the time of production. So get ready to enter the silicon lottery; the price of the ticket is $299 (opens in new tab).