NVIDIA simply swapped out the GDDR6X memory for slower GDDR6 VRAM.
GDDR6X memory offers a higher bandwidth and greater power efficiency than GDDR6.
The GDDR6 memory will, in most cases, hit a bottleneck and introduce lag or stuttering before GDDR6X.
The slower VRAM can also impact render times for video or 3D modeling software.
The difference, in this case, may be negligible.
We just don’t know the details.
NVIDIA claims that the two variants of RTX 4070 “offer similar performance in games and applications.”
In any case, the two variants of RTX 4070 will confuse some customers.
Manufacturers will begin selling GDDR6-equipped RTX 4070 GPUs this September.
NVIDIA