It may be the most popular performance-segment graphics card of the season, and offer unreal levels of performance for its $329.99 price, but the GeForce GTX 970 suffers from a design flaw, according to an investigation by power-users. GPU memory benchmarks run on GeForce GTX 970 show that the GPU is not able to address the last 700 MB of its 4 GB of memory.
The "GTX 970 memory bug," as it's now being called on tech forums, is being attributed to user-reports of micro-stutter noticed on GTX 970 setups, in VRAM-intensive gaming scenarios. The GeForce GTX 980, on the other hand, isn't showing signs of this bug, the card is able to address its entire 4 GB. When flooded with posts about the investigation on OCN, a forum moderator on the official NVIDIA forums responded: "we are still looking into this and will have an update as soon as possible."