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HELP: I have put in MORE RAM and it is RENDERING SLOWER !!!
Hi,
I had one gig of RAM DDR2 in my pc (winXP, AE6.5), now I have put in 3 more, so a total of 4gb. And it renderes slower!
I made a test comp and it rendered for about 10min, now with more RAM it were 13min.Does anyone know what it can be? And what are the best settings for memory and cache with 4gb of ddr2 ram ? Has opengl or advanced 3d anything to do with it?
In xp you can only asign 2 gig to an app. but I read about a switch to boost this up to 3,
anyone using it? should I? how do I do it?A lot of questions
3gig of ram is just alot of money to have a slower render!Thanx for reading
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4 Replies
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You have to use the /3GB switch, otherwise AE doesn’t even see your RAM because Windows does not see it (so to speak). It’s documented somewhere on Microsoft’s website. You shouldn’t expect miracles, though. It’s quite possible that your renders won’t be any faster since using more than 2 GB on a 32 bit OS only works thru memory addres remapping and – as you may have guessed – this consumes CPU power and memory bandwith. The only real benefit of using such systems really is being able to get longer RAM previews or load more stuff into RAM e.g. in 3D programs (textures).
Mylenium
[Pour Myl
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Do you have any form of RAID in your machine?
Having one slow HDD can slow down renders to since the data needs to be saved to disk, and the disk can only keep up for so long.
I find I get better results even with just 2 SATA drives in RAID config.
Maybe I’m smoking my socks, but things do go a bit better !???
– Derrick
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Hi Noizz
Bascis first: of course you made sure the new RAM modules matched what was already there – let’s discount the obvious!
Then: can AE address more than 2 gig of RAM on Windows. My answer would be – not on a 32-bit Windows, which is what most are.
My understanding is that Windows machines running 32-bit versions of Windows cannot address more than 2 Gigabytes of RAM – the other 2 Gigabytes of virtual address space are reserved for use by the kernel and allocated to tasks including managing disc space addresses, input / output of hardware devices, managing computer monitor display, addressing on-cpu registers – and on.
Of course there are 64bit versions out there without this limit; there are also some versions of Windows Server 2000 / 2003 which use 36-bit address if deployed on special Intel architecture wich supports 36-bit addressing – I believe this is mainly used for large database management systems.
Could you try taking out 2 Gig, and running your test render with just 2 Gig installed?
So far as I know the 3 Gig switch was designed for use on the Server series of Windows op systems, not for XP. Use with XP is designed only to allow developers to test device drivers in the Windows Server environment: whether it would leave your system unstable, liable to virtual memory fragmentation, and whether AE would be able to address the additional space, I guess we would have to test, or ask adobe. My advice would be not to go there unless you are a developer.
I’d be interested to be updated on your progress with this !
Mike
This from
https://support.microsoft.com/kb/q291988/A description of the 4 GB RAM Tuning feature and the Physical Address Extension switch
View products that this article applies to.
Article ID : 291988
Last Review : August 30, 2005
Revision : 14.0
This article was previously published under Q291988
SUMMARY
This article describes the 4 gigabyte (GB) random access memory (RAM) Tuning feature and the Physical Address Extension (PAE) switch.
MORE INFORMATION
The /3GB and /PAE switches in the Boot.ini file are to be used with the following products: -
Don’t know how I messed up that link … try again:
https://support.microsoft.com/kb/q291988
Hope this one works …
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