by itou31 » Sat Apr 21, 2018 9:35 pm
itou31
Sat Apr 21, 2018 9:35 pm
Hi,
- I don't remember exactly, but it's about 6 to 10%, depending of the scene on 2x PCIe (your second slot). The performance loss will not affect the rendering process, but only transfer from VRAM to RAM. So, I cannot say for the 970, I have test this with titan1.
- You can keep the 970, it could help the rendering. Each card will render at its speed. But I remember that on one of my test with 4 titans (3 on 8x and with one on the 1x), and the performance is not so significant than 3 titans only on 8x, but it depends on the scene.
- option 2 and 3 still need a new PSU.
- and also, the 970 has only 4GB, so if use with 1080, you're limited to only 4GB.
I7-3930K 64Go RAM Win8.1pro , main 3 titans + 780Ti
Xeon 2696V3 64Go RAM Win8.1/win10/win7, 2x 1080Ti + 3x 980Ti + 2x Titan Black