RAM for CS – 24, 32 or 40GB?

[Todd Kopriva]

We recommend 4GB installed per core (counting virtual cores from hyperthreading). For you, that’s 8 cores x 4GB = 32GB.

40GB would be a bit of overkill.

See this page for information about memory and performance in After Effects: https://bit.ly/dC0MdR

———————————————————————————————————
Todd Kopriva, Adobe Systems Incorporated
Technical Support for professional video software
After Effects Help & Support
Premiere Pro Help & Support
———————————————————————————————————

[Nevin Styre]

Doesn’t the quad core Mac Pro only have 4 ram slots? I don’t think you’ll be able to use your old ram for 40GB config, I think 32GB is the max with 4x8GB.

[Robert Brown]

I have a 12 core. That would mean I need 96 GB Ram.

[Bob Woodhead]

Thank you Todd. But I realized I made a mistake in my system specs! I’ve got the 8-core, dual CPU, hence After Effects showing 16 CPUs. So by that math, 64GB is my sweet spot.

I’ll make it a 2 step upgrade; 4x8GB now, and then replace the current 4x2GB with 4x8GB later in the year.

Thanks!

“Constituo, ergo sum”

Bob Woodhead / Atlanta
Quantel-Avid-FCP-3D-AFX-Crayola
Panasonic HPX500/AF100

[Todd Kopriva]

We’ve found that there isn’t an appreciable performance increase using more than 8-10 rendering processes. We have a machine with 96GB of RAM, and it doesn’t out-perform the one with 48GB of RAM. I think that money spent on RAM over ~48GB of RAM is wasted if you’re just concerned about After Effects.

(With 48GB of RAM, leaving 1/3 of RAM for other applications, you have enough for 4GB of RAM for each of 8 rendering processes.)

At a certain point, overhead of scheduling processing among various processes et cetera starts to lead to diminishing returns.

———————————————————————————————————
Todd Kopriva, Adobe Systems Incorporated
Technical Support for professional video software
After Effects Help & Support
Premiere Pro Help & Support
———————————————————————————————————

[Walter Soyka]

Do you have a sense from your tests of how hyperthreading compares to physical processing cores?

More specifically, if you’re only aiming for 8-10 rendering processes, is there a substantial difference between a machine with a single 6-core processor or dual 6-core processors?

Thanks,

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog – What I’m thinking when my workstation’s thinking
Creative Cow Forum Host: Live & Stage Events

[Todd Kopriva]

The dual-six is certainly going to be faster than the single-six. Even when you’re only running _one_ rendering process, After Effects will spread threads to all CPUs (both virtual/logical and physical).

In this video, I show that all CPUs are used even when running without Render Multiple Frames Simultaneously multiprocessing:
https://www.video2brain.com/en/videos-5355.htm

———————————————————————————————————
Todd Kopriva, Adobe Systems Incorporated
Technical Support for professional video software
After Effects Help & Support
Premiere Pro Help & Support
———————————————————————————————————

[Sam Parnell]

Bob, I was searching forums for info on PPro RAM. Where are you looking to buy RAM for those prices?? Everywhere I am seeing, 8gb is about $300.

Thanks!
sam