Hi,
My MP has 10GB RAM installed. I usually have a max file size of 300MB, fom 2 layers as a 16-bit file. The efficiency never gets to 100% for this file size unless I drop to 8-bits.
Is there any rule of thumb that says how much more RAM I should add to get the figure up to 100%?
thx
Paul
Thanks - seems it's capable of eating up a lot of RAM. With memory for the 2009 model now quite cheap perhaps I should aim for at least doubling what I have :-(
I assume the Efficicency score just indicates that scratch is in use...it doesn't reflect how fast/spacious the scratch drive is?
Paul
The most i have seen used is 15GB used to stitch a 18 image panorama. the RAW files are from a Canon 5D Mark II.
I have 24GB in my MP and it's never been challenged by photshop CS5.
HTH
Michael
Adobe's CS5 and CS5.5 will utilize all the RAM that you have in your machine. The more RAM the longer the RAM preview that you will be able to paly in Aeter Effects and Premiere Pro.
In addition to memory, a key feature of CS5 and CS5.5 is the use of CUDA on a video card to render many of the effects in After Effects and Premiere Pro. I purchased a Mac edition of the nVidia GTX285 card on eBay a year ago (it is still available on eBay), installed it in my Mac Pro, and After Effects and Premiere Pro really fly using this card. I highly recommend it if you are doing video editing with Premiere Pro.
Incidentally, the GTX285 has never given me any problems and works beautifully with Photoshop, Aperture and other graphics intensive applications under both Snow Leopard and Lion which I am now using.
Tom
Hmmm...15GB to process 18 5DII raw files....sounds like mine then shouldn't be using 7GB to process a 300MB tiff?
Uncompressed 5d2 files are about 130mb and working on 3 for a composite image my system ram is at 5-6gb
Don't stress, just get 24gb. It's cheap from crucial.
you will also be using fast memory instead of a scratch drive/array, less need for expensive 8-drive arrays just to get some decent scratch storage to help, that could cost thousands in the past.
Do be sure to point somewhere besides the boot drive for primary scratch, and disable spotlight on the volume as well.
I think even now it can help to have a fast dedicated drive for scratch and I've seen people use a 2nd SSD for that (say your old SSD now that you bought a new faster model).
Also, MPG has a page looking at using 2-3 8GB DIMMs and finds them 15% more bandwidth and faster than their smaller cousins, just don't mix 8's with smaller DIMMs, so you might want to look at going in that direction.
Everything The Hatter said is correct about scratch disks, etc. but we found a bug in PSD CS5 and that is, that it will only recognize the RAM you have installed in your machine at the time you install the program. My new machine came with 6 gigs installed, which didn't leave much for PhotoSHop, I just installed 32 gigs of RAM but it still shows the available RAm, once we reinstalled PhotShop it recognized the full 32 gigs of RAM.
Bug? or not making the changes in preferences? and to get more from 32GB you need to be able to use 64-bit kernel boot mode too.
See if you can find more on MPG there use to be issues with RAM and even with "too many" cores. And CS5 is latest.
Right, we could not change the RAM use in PSD Preference until reinstalling, the preferences pane only showed the original 6 gigs, once we re-installed PSD, it showed the full 32 gigs
How much RAM to get CS5 to 100% Efficiency?
