Ja Gigabyte scheint laut Post im 3D Center da was klarstellen zu wollen:
http://www.forum-3dcenter.org/vbulletin/showpost.php?p=10525276&postcount=3773
"1. All GIGABYTE GeForce GTX 970 series graphics cards available on the market are equipped with a total of 4GB of dedicated graphics memory, which is consistent with the specifications stated on both GIGABYTE and NVIDIA websites.
2. To optimize memory traffic under the new NVIDIA MAXWELL GTX 970 GPU configuration, the 4GB graphics memory is segmented into a 3.5GB section and a 0.5GB section, and the memory capacity can still be utilized up to 4GB as specified.
3. Gaming performance is not directly associated with how memory is segmented, rather depending on game quality settings and display resolutions. It all comes down to GPU computing capability between GTX 980 and GTX 970 that makes the difference in performance. (Please see the comparison chart below)"
Heißt auf gut Deutsch ... Ihr könnt uns mal am A. lecken