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What are the advantages going from 16 to 32 GB Ram on a high end system?

daddydante88daddydante88 Posts: 12
in Technical Help (nuts n bolts)
Hey folks. New to Daz studio and I'm considering bumping up the memory on my computer. I'm considering this because I've noticed during rendering my resource allocation sometimes peaks my 16GB of memory all the way to 15.5. so I was wondering if an increase of memory would have any impact and if so, what? Specs: Intel i7 8700k @5.0 GHz. Delid and Liquid cooled. Asus 1070 TI 8GB, custom boost curve and liquid cooled. 16GB (2x8) Corsair RGB pro 3000Mhz with custom timings. MSI z97 Gaming M5 motherboard. Also, I usually run everything GPU bound leaving my CPU free to tinker with other tasks during renders. Even so, most of the time I speak my vram at 6 to 7 GB but just a memory still skyrockets. Is this normal? Or is something wrong?

Comments

  • JamesJABJamesJAB Posts: 1,760

    Honestly, if your RAM usage is hitting 15.5GB... Yes install more RAM.

    Plus, RAM is very inexpensive right now. 

    Better to get it now before some typhoon or whatnot hits a single factory in south east Asia somewhere that makes stickers for electronic labels and causes RAM prices to double for no reason.

  • frankrblowfrankrblow Posts: 2,052

    While you are rendering and tinkering with other stuff on your computer, the computer itself is using any spare RAM for housekeeping, etc, so the more RAM you have, the more smoothly all those processes go. Personally, I consider 32 GB to be a minimum, with 64 GB a better choice for heavy use.

  • kenshaw011267kenshaw011267 Posts: 3,805

    With the amount of time and effort put into the above system I'd definitely get more RAM. That certainly looks like the major bottleneck, if you could call it that, in the system. Finding identical sticks to the ones you already have to let you just upgrade could be challenging but as previously stated getting a 32Gb kit isn't all that expensive right now.

  • ebergerlyebergerly Posts: 3,255

    In order to use the entire 8GB of VRAM on your GPU you'll need at least 16, but more likely up to 24GB of system RAM. 

    Studio loads your scene into system RAM, then does a lot of stuff to convert it into GPU code that requires less GPU VRAM. However, you need enough system RAM to hold the scene. And that's usually a minimum of 2X GPU VRAM according to some, but in my experience it's usually 3X. 

    So if you're getting close to filling up your 8GB of VRAM you'll need around 24GB or more of system RAM. 

  • JamesJABJamesJAB Posts: 1,760
    ebergerly said:

    In order to use the entire 8GB of VRAM on your GPU you'll need at least 16, but more likely up to 24GB of system RAM. 

    Studio loads your scene into system RAM, then does a lot of stuff to convert it into GPU code that requires less GPU VRAM. However, you need enough system RAM to hold the scene. And that's usually a minimum of 2X GPU VRAM according to some, but in my experience it's usually 3X. 

    So if you're getting close to filling up your 8GB of VRAM you'll need around 24GB or more of system RAM. 

    Also, that extra RAM being used by studio durrng Iray rendering is for if the GPU errors during the render, the CPU will pick up the job and keep it going (even if you don't have it selected as an Iray device)

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