Tech website Overclockers received word that NVIDIA has threatened EVGA to stop shipping EVBot for the EVGA GeForce GTX 680 Classified graphics card. This handy accessory that enables you to tweak the card's clockspeeds and voltages on-the-fly, but new version of the GTX 680 Classified no longer have an EVBot port.
Asked about this on the EVGA forums, employee EVGA_JacobF responded that new 680 Classified cards will not have EVBot support because EVGA is not permitted to include this feature any longer.
So, they are not permitted by NVIDIA to include the feature. NVIDIA is the only entity that could “not permit” them from doing something on their own product. Then, members asked the “Why?” question once again to try to coax a less vague answer to this situation and they are supplied with…
“It was removed in order to 100% comply with NVIDIA guidelines for selling GeForce GTX products, no voltage control is allowed, even via external device.”
From this quote, it’s obvious that NVIDIA does not want their partners to supply any means of voltage control with the GK100 series of GPUs. This is a slap in the face to many of the enthusiasts and everyday overclockers who enjoy pushing hardware for that extra performance. That leaves the extreme, warranty-voiding modders that hardmod their GPUs with the ability to increase voltage for the Kepler cards and have a stress-free overclocking experience
Why NVIDIA is preventing people from controlling the voltage of its Kepler GPUs is unknown, and it's also unknown what this news means for ASUS' GPU Hotwire feature.