Hello, I recently got a RTX 3070 & I switched it to the main slot on my motherboard with a GTX 1660 on the second slot. But the performance on Blender Classroom scene (with slightly increased samples count) still gives me the same render time as with my single RTX 3070…
I have ticked both GPUs in the preferences & also have a good power supply…
Here are the results of the benchmark :
i7 7700 cpu : 20m 29s
Gtx 1660 (Cuda) : 6m 2.78s
Gtx 1660 (Optix) : 6m 29s
Rtx 3070 (Cuda) : 2m 28.5s
Rtx 3070 (Optix) : 1m 35.5s
Gtx1660 + Rtx3070 (Cuda) : 2m 24.4s
Gtx1660 + Rtx3070 (Optix) : 1m 20.4s
Gtx1660 + Rtx3070 (Cuda) tile size 256 : 1m 34s
Gtx1660 + Rtx3070 (Optix) tile size 256 : 53.6s