Activity Monitor shows 256MB less

[vijmal]

I just upgraded my late 2009 iMac 24" to 8 GB RAM. the RAM is from Strontium and system profiler says that I have 8 GB. but when i open Activity Monitor i get only 7.75 GB.
Reading some posts it sugests that the extra 256MB could be the video ram. but when i had 4 GB (the original) activity monitor would show 4 GB.
is the RAM bad or is the video card now taking 256 as there is just more ram ?

 

[NutsNGum]

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_1 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8B117 Safari/6531.22.7)

If you've got an nvidia 9400m, then it's the graphics.

 

[vijmal]

this is what system profiler says about the graphics card
---------------------------------------------------------------------
Chipset Model: NVIDIA GeForce 9400
Type: GPU
Bus: PCI
VRAM (Total): 256 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0867
Revision ID: 0x00b1
ROM Revision: 3379
Displays:
iMac:
Resolution: 1920 x 1200
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Built-In: Yes
Display Connector:
Status: No Display Connected
---------------------------------------------------------------------

Is there something in the card to say that if there is more than 4GB then take 256 MB ?

 

[nightfly13]

That onboard GPU was always using 256mb. Curious that it didn't show up before.

 

[Icy1007]

this is what system profiler says about the graphics card
---------------------------------------------------------------------
Chipset Model: NVIDIA GeForce 9400
Type: GPU
Bus: PCI
VRAM (Total): 256 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0867
Revision ID: 0x00b1
ROM Revision: 3379
Displays:
iMac:
Resolution: 1920 x 1200
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Built-In: Yes
Display Connector:
Status: No Display Connected
---------------------------------------------------------------------

Is there something in the card to say that if there is more than 4GB then take 256 MB ?

The 9400M takes 256MB from the system memory for use as VRAM.

 

[vijmal]

That onboard GPU was always using 256mb. Curious that it didn't show up before.

exactly that is what is causing confusion for me.

 

[vijmal]

this happens even on new machines. not sure if this has something to do with a bug or not