MacPro 8core extremely slow after latest snow leopard.

[Shademaster]

Hell yea! I am a happycamper! I just installed 8 extra gigs of memory from OCW and all my sluggishness trouble are gone! I had a Cinema4D render going on that was sucking up 10 gigs of ram and I had no speed trouble whatsoever. I guess swapping has a really detrimental effect on machinespeed.

Really happy with OCW at the moment. I ordered my RAM friday afternoon and got it monday morning with excellent tracking info and a 'How to install' guide that made it really easy.

I noticed my new mem reaches 76 degrees C under heavy load, is this okay or should I raise my fanspeed?

Thanks guys!

 

[bearcatrp]

Kind of figured it was your memory. After seeing your page ins/outs, now we know. Some programs are written in 32 bit and will still generate some page outs, like imovie, but shouldn't be a big deal. Once all the programs get rewritten for snow leopard, should see a bigger boost. I have 24gb of ram and haven't stress it yet. As for your fans, suggest you bump them up if your rendering for a long period of time. I crunch data 24/7 when I am not editing video or ripping movies and leave mine on around 850 rpm's. Keeps it around 90 degrees.

 

[Shademaster]

Kind of figured it was your memory. After seeing your page ins/outs, now we know. Some programs are written in 32 bit and will still generate some page outs, like imovie, but shouldn't be a big deal. Once all the programs get rewritten for snow leopard, should see a bigger boost. I have 24gb of ram and haven't stress it yet. As for your fans, suggest you bump them up if your rendering for a long period of time. I crunch data 24/7 when I am not editing video or ripping movies and leave mine on around 850 rpm's. Keeps it around 90 degrees.

Alright thanks! 24gigs seems like infinitely too much too me haha! Maybe I'll get to the point I consider it too less in a month or so .

I managed to get my RAM temps down to 50 degrees C on all sticks by NOT overclocking my machine. It made a lot of difference. When clocked from 3 to 3.4 my 2x 4gb sticks started going north of 80 degrees Celcius. I set my fan speeds to 998 rpm and 3ghz and everything stays nicely at 50 degrees under maximum machineload.

 

[multimania]

Similar issues (MP 2.8 Octo 4GB)

Hi, I have a MacPro 2.8 Quad. I have found 10.6.2 to be as you describe. I also have 4GB right now, is it really just Ram? I've been so frustrated I reinstalled Leopard onto a separate HD and the machine suddenly starts to fly like it used to.

Any help would be really appreciated.

Mike

Alright thanks! 24gigs seems like infinitely too much too me haha! Maybe I'll get to the point I consider it too less in a month or so .

I managed to get my RAM temps down to 50 degrees C on all sticks by NOT overclocking my machine. It made a lot of difference. When clocked from 3 to 3.4 my 2x 4gb sticks started going north of 80 degrees Celcius. I set my fan speeds to 998 rpm and 3ghz and everything stays nicely at 50 degrees under maximum machineload.

 

[Shademaster]

Hi, I have a MacPro 2.8 Quad. I have found 10.6.2 to be as you describe. I also have 4GB right now, is it really just Ram? I've been so frustrated I reinstalled Leopard onto a separate HD and the machine suddenly starts to fly like it used to.

Any help would be really appreciated.

Mike

Yes I can definitely say it is the RAM. I went back multiple times to the old OS and noticed a lot of difference. Once I upgraded my RAM all my trouble were gone under 10.6.2 so I guess that was the problem after all.

I bought RAM from OCW. It is really good, I actually managed to overclock it by a lot without getting any parity errors. I'd say the speedifference is 500% compared to the 4gb machine in 'feeling'. It's always snappy now.

Good luck with your machine man!

 

[multimania]

Yes I can definitely say it is the RAM. I went back multiple times to the old OS and noticed a lot of difference. Once I upgraded my RAM all my trouble were gone under 10.6.2 so I guess that was the problem after all.

I bought RAM from OCW. It is really good, I actually managed to overclock it by a lot without getting any parity errors. I'd say the speedifference is 500% compared to the 4gb machine in 'feeling'. It's always snappy now.

Good luck with your machine man!

Cheers mate, I'll have to get some more then as I am getting really irritated by it, it used to go like s*?t of a shovel!

So when you went back to just leopard with 4GB did it go fast again? In otherwise, snow leopard is more demanding I suppose?!

Thanks alot

 

[Shademaster]

Cheers mate, I'll have to get some more then as I am getting really irritated by it, it used to go like s*?t of a shovel!

So when you went back to just leopard with 4GB did it go fast again? In otherwise, snow leopard is more demanding I suppose?!

Thanks alot

Yea when I went back the machine returned to it's orginal speed. I have no idea what snow leopard is doing with the 4gigs since our iMacs run absolutely great on 4 gigs . Not logical, anyhow this is a reason to upgrade your RAM finally .

 

[multimania]

Yea when I went back the machine returned to it's orginal speed. I have no idea what snow leopard is doing with the 4gigs since our iMacs run absolutely great on 4 gigs . Not logical, anyhow this is a reason to upgrade your RAM finally .

Thanks alot mate for the confirmation. Yes I think thats all the excuse I need to get 8. If you don't mind me asking, did you experience a slow gui. IE: I find clicking on, moving copying and pasting much slower with Snow Leopard.

If I don't here from you before, have a wonderful Festive season and thanks very much for your help so far.

Mike

 

[Shademaster]

Thanks alot mate for the confirmation. Yes I think thats all the excuse I need to get 8. If you don't mind me asking, did you experience a slow gui. IE: I find clicking on, moving copying and pasting much slower with Snow Leopard.

If I don't here from you before, have a wonderful Festive season and thanks very much for your help so far.

Mike

Hey thanks!

Yes the GUI felt really slow, every action took 5 seconds of spinning beachball to accomplish. Especialy opening new tabs in safari gave me second long graphical glitches. Now all gone. Expose was very slow too, sometimes took 40 seconds to pop up.

Weirdly enough I run my machine lean and mean when I am working and sometimes it isn't using more than 1.5gb of ram and it is very fast nonetheless. Weird because you'd say with 4gb it do fine too.

Happy new year by they way!

 

[multimania]

Cheers mate, well that's it, definately more ram. Yes I try to run my machine pretty lean too, I was watching for pageouts and there is only about 9 mb of pageouts when running alot, but as you have confirmed it runs stodgily with 4. iTunes is always a bit slow on the GUI, but that's not been my primary concern, it's things like transferring data from 1 disc to another. In leopard it wouldn't blink before initializing a copy, now it sort of hangs around for a couple of seconds first.

Thanks for all your help, I just wondered if you could also check your vm size in snow leopard; mines running something stupid like 130gb!!! I can't see how that can be right, but maybe it is.

Happy new year to you too mate!

Hey thanks!

Yes the GUI felt really slow, every action took 5 seconds of spinning beachball to accomplish. Especialy opening new tabs in safari gave me second long graphical glitches. Now all gone. Expose was very slow too, sometimes took 40 seconds to pop up.

Weirdly enough I run my machine lean and mean when I am working and sometimes it isn't using more than 1.5gb of ram and it is very fast nonetheless. Weird because you'd say with 4gb it do fine too.

Happy new year by they way!