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New rig almost ready but wondering about the benefits for DS

Second Technician RimmerSecond Technician Rimmer Posts: 484
edited January 2020 in Technical Help (nuts n bolts)

A Ryzen 7 3700x with my already purchased not-so-long-ago gtx 1070ti. I plan to add DDR4 ram frm 16go to maybe 32. I know that, of course, the graphics card is central to this and that to make a real leap I'd need to get something more powerful than the 1070ti, but knowing that I am already using that same card on my current intel i72600K with 32go of DDR3, am I likely to still feel a really noticeable improvement in rendering speed with this new configuration?

Post edited by Second Technician Rimmer on

Comments

  • fastbike1fastbike1 Posts: 4,078

    No, you probably won't. As long as your scenes fit the !070 TI's Vram, rendering should be about the same. CPU Ram timing really isn't going to make that much differnence for Studio. The  different CPU won't make much difference either if your scenes fit the GPU. You really son't want to hobble the new build with only 16GB. In fact, why not 64GB RAM. That will tned to make all other computer operations better.

  • kenshaw011267kenshaw011267 Posts: 3,805

    You might see a few seconds difference as loading the scene into VRAM will be faster but that's it. You might benefit from going to 32 Gb RAM but 64 would be a waste of money unless you do something else very RAM intensive.

  • Second Technician RimmerSecond Technician Rimmer Posts: 484

    What about general operations, like preview in render mode in viewport?

  • kenshaw011267kenshaw011267 Posts: 3,805
    second.technician.rimmer_9571136c47 said:

    What about general operations, like preview in render mode in viewport?

    That should be better. The 3700X is substantially faster than the 2600k

  • RincewindRincewind Posts: 6

    I upgraded from an i7 4ghz quad core to a 3900X and there was a massive performance increase in Daz startup time and it switches to the Iray preview viewport much much faster. Enabling CPU + GPU rendering also increases render speed significantly in more complex scenes (Its a 66/33 GPU/CPU split in complex scenes and a 85/15 split in most of the simple benchmark ones, whereas the i7 wasn't worth using for renders)

  • Second Technician RimmerSecond Technician Rimmer Posts: 484

    Thanks guys, that's very encouraging. I feel like I didn't throw my dough through the window there.Do you do your viewport previews in full render mode, basic mode or even maybe using Render Throttle?

  • RobinsonRobinson Posts: 751

    My experience of 3d in general is that you need two things: (1) single core performance and (2) RAM.  Multicore is important for things like CPU rendering, mostly.  Many algorithms have too many dependencies to allow threading to make a decent contribution and/or doing so requires many copies of objects that tend to have very large memory footprints (hence 2 is important sometimes).  (1) is why Intel Coffee Lake (9900K etc.) is still competitive against the current very good AMD 7nm lineup btw.

     

    For this reason I'd go 32Gb.  I have a "crappy" 4790K processor (quad with 8 threads) and my cheap upgrades were a new graphics card (2070 RTX) and a second hard DD3 kit from ebay.  I think you're CPU is very good value right now btw, so that's a bonus.

  • Second Technician RimmerSecond Technician Rimmer Posts: 484

    I'll be stuck on my 1070ti for some time. So I definitely will go wide with the RAM.

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