OTOY Forums

Hi guys,

I see you talking about the CPU and I was wondering;
the CPU specs do not have that much of a influence, just regarding the Renderspeed in OctaneRender, right?

But if so, can you explain how Dual Xeon E5-2698v4 have more benefit over a i7-5930K or i7-950?
I have a slave of double Tian Z on a old mobo with i7-950 cpu and the renderspeeds adds up nicely.

cheers,

rappet wrote:Hi guys,

I see you talking about the CPU and I was wondering;
the CPU specs do not have that much of a influence, just regarding the Renderspeed in OctaneRender, right?

But if so, can you explain how Dual Xeon E5-2698v4 have more benefit over a i7-5930K or i7-950?
I have a slave of double Tian Z on a old mobo with i7-950 cpu and the renderspeeds adds up nicely.

cheers,

For GPU rendering it's not better to have slower clocked Xeons vs higher clocked Desktop CPUs (sadly computing scene to GPUs in octane is still not multi threaded to use full potential of my CPUs - hopefully OTOY is looking at that since even desktop CPUs are going more cores less GHz nowdays) but i'm not using only GPU rendering so i need CPUs for CPU rendering also. There is scenes which still can't fit in GPUs due polygon Limits/ ram limits long loading times....... GPU is still not 100% replacement for my workflow so i have strong CPUs alongside GPUs.

Lewis wrote: For GPU rendering it's not better to have slower clocked Xeons vs higher clocked Desktop CPUs (sadly computing scene to GPUs in octane is still not multi threaded to use full potential of my CPUs - hopefully OTOY is looking at that since even desktop CPUs are going more cores less GHz nowdays) but i'm not using only GPU rendering so i need CPUs for CPU rendering also....

yeah, I understand that you need it for CPU rendering.. sometimes I have an old project (or client wish) to redner in cpu render software (Artlantis).. and it is so slow compared to OCtaneRender.

I thought that there is a slight advantage of having fast CPU, because there is some 'traffic' between GPU and CPU, no?
For uploading the scene even faster or something?

Can you explain a little more about
"(sadly computing scene to GPUs in octane is still not multi threaded to use full potential of my CPUs - hopefully OTOY is looking at that since even desktop CPUs are going more cores less GHz nowdays)"
Does that mean that there might be more of CPU advantage related to GPU-render in the future?

cheers

rappet wrote: Can you explain a little more about
"(sadly computing scene to GPUs in octane is still not multi threaded to use full potential of my CPUs - hopefully OTOY is looking at that since even desktop CPUs are going more cores less GHz nowdays)"
Does that mean that there might be more of CPU advantage related to GPU-render in the future?

cheers

There is advantage of fast Single Core/Thread CPU (more GHz) when uploading/preparing scenes for GPU render. So it's faster to compute/prepare scene on 4GHz CPU than 2GHZ CPu (of same/similar architecture ofcourse). But once GPU rendering starts there is no more visible/measurable advantage in faster CPU.

IF Otoy finds way to prepare scene for GPUs (that's job CPU does) in Multithraded maner then it will be benefit to Xeons to have 20,30,40 cores on 2GHZ and will be faster than 10 cores on desktop CPU at 3 Ghz.

thanx for explanation Lewis
and a nice rig you got there

smicha wrote:Thanks so much. Great machine! I see I did a similar one recently but on 2630v4 and 3x980ti.
viewtopic.php?f=11&t=55794&start=10#p286037

These v4s are amazing - 26C at idle, 37C at full load.

What brand is the case? Looks like something I want!

Thermaltake

Thanks Smicha!

gardeler wrote:Thanks Smicha!

No problem. Let me know if you have any further questions.

for some reason the 1080 is not recognized in my rig. I have a single 1080. octane 3.02 says compute model 6.1 and it won't work with it. Any thoughts? Latest drivers from NVIDIA. Windows 10 pro. Also has anyone go it to work on a mac?