hybrid mode improved in NEXT?

[super gnu]

ive never had a worthwhile result from hybrid rendering. my ratio of cpu-gpu has never been good enough i think.. i have a lowly 3930k (admittedly at 4.7 ghz) and a Titan X.. every time ive tried adding the cpu to the job , my rendertime actually goes up.


this weekend i upgraded my mobo to allow 64gb ram, and added a second titan x.

wondering if the extra ram might help, i opened my current gpu production scene ( maxes out the titanx'es ram, lots of forestpack and big textures etc)

results are as follows, and in line with all my past experiences of hybrid mode:

1x TitanX 7 minutes 40 seconds

1x 3930k cpu in cuda mode: 22 minutes 12 seconds.

2x TitanX 3 minutes 33 seconds

2x titanX + 3930k cpu 3 minutes 49 seconds.



so, question is, would an upgrade to next improve matters? or should i just forget about getting a bit of extra speed from my cpu?

[Alex_M]

Same thing happened to me when I worked on a 4930k (6 cores) CPU whenever I tried rendering with Hybrid. Pretty much every scene I rendered took noticeably longer with Hybrid compared to GPU only. I think that someone at Chaos mentioned that my CPU was not fast enough or something. I'm curious to do a test and see if it's better now with my new 16-core CPU. I'll post here if I do.

[matanov]

I think that someone at Chaos mentioned that my CPU was not fast enough or something.

Yes. Let's take for example super gnu's setup - a CPU that is almost 7 years old + 2x of the fastest mass used GPUs. The technology gap here is huge. The CPU just can't "catch up" and the GPUs have to "wait" for it in the calculations.