the sheer Power

[John Rofrano]

[Michael Church] “Now I am in Vegas, oooh lookit all the Ram I can use for Ram preview. I had been using about 3 GB with 1 for system (I don’t really do anything else while editing).
So I thought I would bump it to 8 GB.

I am not really seeing any difference in Ram preview or rendering time”

That’s because RAM Preview has nothing to do with regular preview. It only comes into play when you make a timeline selection and press Shift+B to render that timeline selection to RAM.

It is also a bad idea to set it that high. If you don’t know what RAM Preview is, I’m guessing you never used it, in which case you should set it back to the default of 256MB because you are wasting a lot of memory by setting it to 8GB and not using it (didn’t you read the warning pop-up when you set it that high???)

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Michael Church]

Hi John, it’s kind of like you live here! Thanks as always for the response.

I use Ram preview quite a bit due to the large tiff files I am working with.
How else would I know it was not working faster after adding RAM?

There is no way to just play from the timeline and watch the flow to judge timing the keyframes. I am working on a slow pan across a 32,000 x 4800 tiff. Yes. I know. It is too big. The client wants some pretty tight zooms, and the original psb (392 mb) has enough res to get close up.

So, I keyframe, pan, click-drag select an area (1-2 video tracks) then shift B for Ram preview. Then I can see the actual flow.

I do occasionally read instructions before posting in the forums. 🙂

So, taking into consideration that I do know what Ram preview is, and that I saw the Pop-up window, isn’t 4 GB Ram left over enough?
Considering that is what my machine ran on before the new RAM, I would think so…

[Rob Franks]

I assume you’re using Vegas 32bit?

In vegas 32 bit the maximum setting for preview ram is 1024. The is because it assumes you are running a 32 bit os which has a 4 gig limit (Vegas needs memory for other things… your os need memory …etc)

Now you can cheat a little and bump this up as high as 3072… but that’s the max for Vegas 32

How to cheat:
Hold the shift key down while clicking on preferences. You will see an additional tab open up in the preferences settings called INTERNAL.
Scroll down until you see “RAM PREVIEW LIMIT (MB)”. Now change this value from 1024 to 3072 and hit enter. Take note and make sure the change has been made. Close Vegas and restart.
Now go to RAM PREVIEW in options and you will see the max limit at 3072. You are free to use all of this, but remember to turn it back down to a reasonable number before rendering (ie: 256 or similar) or your renders may be a bit slower.

*NOTE*
Be careful about screwing around with the settings under the internal tab. You can screw up vegas by changing things that you don’t know about!!!

[Michael Church]

No need to cheat ( I don’t think..) as I am using 64 bit. It would be silly to have all this RAM and be running 32 bit. Vegas 10 64 bit.

[Rob Franks]

Well you didn’t exactly specify WHAT vegas you had now did you. I run both the 32 bit AND the 64. Many (including myself) still run the 32 bit version (even though we have a 64 bit os) because a lot of the 3rd party plugins still don’t work in 64

At any rate, You’re doing something wrong then because Vegas 64 will see a lot more than 4 gig. The max in vegas 64 is 32,768MB.
I have 6 gig ram and if I go to preferences to view my preview ram limit it says: 5118MB

[Rob Franks]

Sorry… forgot the rest.
No. More memory does not equal speed. Rendering speed is more a function of cpu size(speed). Increased memory simply equates to ability to handle more on the time line and more in preview ram.

[Michael Church]

I’m Sorry, staring at a monitor in a dark room alone too long perhaps..
So, Win7 64 bit, Vegas 10 64 bit, intel i5 quad core running at 3.6ghz, 12 gb of ram (2 x 4 gb & 2 x 2 gb)
Yes, vegas sees all the ram. running a memory and cpu monitor while doing the ram preview, Vegas uses between 8 – 10 gb Ram, and only about 50 -60% cpu.

The original point I am asking about is…
I had this same setup, but with just the 4 gb ram, then added in another 8 gb ram, and I am not seeing much of a difference in the time it takes to render a ram preview. So I was wondering if I had setup the hardware incorrectly. After some other research, it would seem that I can run 2 different sets of memory in the 2 different memory lanes, so that should not be an issue.

Dealing with such large files, I am just trying to make sure I have my rig at max potential.
thanks for your patience

[Rob Franks]

Again, more memory does not equate to speed. It equates to how much MORE of the time line you can load into preview memory for playback. Now running dual or triple channel (as opposed to single channel) or running faster memory at higher bus speeds *MIGHT* decrease render preview by a few milliseconds… in other words nothing substantial because it is not the main objective of more memory… it is the AMOUNT of time line (and its complexity) you can load during a single SHIFT-B session that will differ.

[John Rofrano]

Sorry I misunderstood your original post but as Rob said, more RAM has no affect on rendering speed. It’s all about CPU power.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Michael Church]

Good to know, thank you! So I can scavenge a bit of ram speed to overclock my cpu a bit more, then perhaps at least have faster renders.