The RTX 2070 and RTX 2070 Super featured 8 GB GRRD6 RAM. Rumors made rounds that NVIDIA is developing a 16 GB variant, but nothing happened, and in fact, even the RTX 3070 features 8GB GDDR6 RAM.
Luckily, Youtuber VIK-on was able to get his hands on NVIDIA PCB diagrams for GeForce RTX 2080 SKU, which guides on how the board should be configured to support 16Gb memory modules. Although RTX 2070 and 2080 use different PCB boards, the information was useful to perform a mod on the RTX 2070.
Once Youtuber removed Micron 8Gb modules from RTX 2070, he replaced them with Samsung 16Gb modules . This memory module is listed in board schematics. The module replacing task looks as easy as changing the resistors into a different binary code for RAMCFG jumpers. NVIDIA doesn’t recommend modification, but the RTX 2070’s BIOS supports a 16 Gb RAM too.
GPU-Z recognized the card, and it also worked with FurMark, but unfortunately, the card isn’t stable. VIK-on successfully ran the full 3DMark TimeSpy test. The altered RTX 2070 scored 6176 points, which is way less than the 9107 points scored by the original RTX 2070.
We can conclude that the hardware change was a partial success as the card was able to boot into Windows but was not stable.