New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus Advice and insight from world-class Apple enthusiasts Exclusive access to members-only contests, giveaways and deals

Join today!

 
Start a Discussion
 

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

Join the conversation RSS
Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

Power Mac - g5 quad ram allocations


Post Reply New Thread Subscribe

 
Thread Tools
phidelity

 
Member Since: Sep 26, 2008
Posts: 7
phidelity is on a distinguished road
Mac Specs: g5quad 104.11/mbpro 2.2 10.4.11/5.5

phidelity is offline
hello

i have a g5 quad which i have recently upgraded the ram to 8 gig, 2 sets of 4gb in matched pairs of 2gb simms of kingston ecc ram. my issue is no matter how much software i am running i cannot access more than a total of 4 gb, according to the activity monitor. my main use is cubase 4 (which is supposed to be able to access 4 gb max as of this current version) and other audio related programs. i also had numerous ram issues with this machine and had to send back ram from two other manufacturers.

my concern is that some of the ram is not being utilized by the machine and i am curious if there is a way to identify whether this could be possible due to some other hardware problem. i had the machine tested by a reputable apple tech but they did not test the machine with all the ram installed .. instead only tested with the standard issue ram from apple (one pair of 256 mb simms. is it possible that the motherboard is having issues with that task and if so how would i go about testing this?

thanks
QUOTE Thanks
LSDARBY

 
Member Since: Sep 21, 2008
Posts: 4
LSDARBY is on a distinguished road

LSDARBY is offline
Yeah you can only have upto 4GB of RAM. It does say on the box and on all the spec sheets/manuals.
QUOTE Thanks
phidelity

 
Member Since: Sep 26, 2008
Posts: 7
phidelity is on a distinguished road
Mac Specs: g5quad 104.11/mbpro 2.2 10.4.11/5.5

phidelity is offline
Quote:
Originally Posted by LSDARBY View Post
Yeah you can only have upto 4GB of RAM. It does say on the box and on all the spec sheets/manuals.

yes this i know but what i am having trouble with is : why my g5 cannot utilize all of the ram that is installed and shows up in the system profiler? and how do i figure out if there is a problem with the ram buss or what the problem is?

thanks for the response
QUOTE Thanks
LSDARBY

 
Member Since: Sep 21, 2008
Posts: 4
LSDARBY is on a distinguished road

LSDARBY is offline
Quote:
Originally Posted by phidelity View Post
yes this i know but what i am having trouble with is : why my g5 cannot utilize all of the ram that is installed and shows up in the system profiler? and how do i figure out if there is a problem with the ram buss or what the problem is?

thanks for the response
Because it only supports up to 4gigs of RAM it wont be able to read or utilize anything above that. Atleast thats what i assume.
QUOTE Thanks
phidelity

 
Member Since: Sep 26, 2008
Posts: 7
phidelity is on a distinguished road
Mac Specs: g5quad 104.11/mbpro 2.2 10.4.11/5.5

phidelity is offline
Quote:
Originally Posted by LSDARBY View Post
Because it only supports up to 4gigs of RAM it wont be able to read or utilize anything above that. Atleast thats what i assume.
yes this is true but..

sorry for my poor communication. to be clear cubase will not access even 4 gig nor can i get this machine to access over that amount while running numerous other programs that are not part of the cubase umbrella (other synthesis, midi or audio programs that are not vst pluggins). which should mean they will access there own allotment of ram, correct?

so this is the premise of my concern. with all these programs running i don't seem to utilize the ram that i have available so how can i test why this is occurring.

thanks
QUOTE Thanks
phidelity

 
Member Since: Sep 26, 2008
Posts: 7
phidelity is on a distinguished road
Mac Specs: g5quad 104.11/mbpro 2.2 10.4.11/5.5

phidelity is offline
anyone with suggestions on this?
QUOTE Thanks
rman

 
rman's Avatar
 
Member Since: Dec 24, 2002
Location: Los Angeles, California
Posts: 12,591
rman has much to be proud ofrman has much to be proud ofrman has much to be proud ofrman has much to be proud ofrman has much to be proud ofrman has much to be proud ofrman has much to be proud ofrman has much to be proud ofrman has much to be proud ofrman has much to be proud of
Mac Specs: 2 x 3.0GHz Quad-Core, 6GB OS X 10.6.8 | 15in MacBook Pro 2.2GHz OS X 10.6.8 | 64GB iPad 2 WiFi

rman is offline
My understanding is that the easier G5 can use up to 8GB of memory, whereas the later ones can use up to 16GB of memory.

The problem here is getting the system to allocate the 8GB of memory.

Just because an application can use a certain amount of memory, does not mean that it will allocate that amount.

Life isn't about waiting for the storm to pass, It's about learning to dance in the rain!
QUOTE Thanks
Dustin

 
Member Since: Oct 10, 2008
Location: Portland, Oregon
Posts: 3
Dustin is on a distinguished road
Mac Specs: 16GB Iphone 3G iMac next week!

Dustin is offline
I read somewhere that since Leopard is 32Bit, it will only see 4GB of ram. When people run VMware Fusion and Vista, they can see the whole 8GB of Ram, due to Vista being 64bit. I found this on my searching to see if i can run an Imac with 6GB, or even 8GB or Ram.
QUOTE Thanks

Post Reply New Thread Subscribe


« Big size LCD TV for Mac Pro | iMac Glass 2008 5 min Starting time. »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread
Thread Starter
Forum
Replies
Last Post
Selling stock RAM, warranty horkmaster Apple Notebooks 8 11-01-2007 01:22 AM
G5 dual vs. quad ram... Turtlehead Apple Desktops 1 02-23-2007 02:41 AM
Ram question jaster Apple Notebooks 3 02-11-2007 08:00 PM
dead RAM slot knucklehead13 Apple Notebooks 2 01-21-2007 04:42 PM

All times are GMT -4. The time now is 10:19 AM.

Powered by vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
X

Welcome to Mac-Forums.com

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!


(4 digit year)

Already a member?