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borgward 06-23-2015 01:07 PM
How Much System RAM Video uses
 
Ho do I determine how much system RAM a video card uses?

Keith Hedger 06-23-2015 01:34 PM
I thought video cards these days used their own on board RAM for speed reasons.

borgward 06-23-2015 01:53 PM
Quote:
Originally Posted by Keith Hedger (Post 5381816)
I thought video cards these days used their own on board RAM for speed reasons.
Which "these Days"? What are you assuming? Some video cards in existence use both onboard and system RAM. So back to the question, how do I determine how much system RAM a particular card uses? Better yet how do I determine if a card is using system RAM and if so how much?

Keith Hedger 06-23-2015 01:56 PM
I meant fairly modern cards eg one or two years old, have you tried just checking the specs with the manufacturer or do you need to do this programmatically for some reason.

Keith Hedger 06-23-2015 02:00 PM
lshw gives this for my card
Code:
product: RV710/M92 [Mobility Radeon HD 4530/4570/545v] [1002:9553]
vendor: Advanced Micro Devices, Inc. [AMD/ATI] [1002]
bus info: pci@0000:01:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities:
        Power Management,
        PCI Express,
        Message Signalled Interrupts,
        vga_controller,
        bus mastering,
        PCI capabilities listing,
        extension ROM
configuration:
        driver: radeon
        latency: 0
resources:
        irq: 29
        memory: d0000000-dfffffff
        memory: fbef0000-fbefffff
        ioport: c000(size=256)
        memory: fbec0000-fbedffff
is the resources section the bit you need?

borgward 06-23-2015 02:13 PM
I am installing LinuxMint on Dell Dimension 4550. Dell/Nvida card. 2 GB Ram installed. Intel chipset does not allow linux OS to see all of the RAM. Have 1.17 GB RAM free after booting new installation. I want to know how much RAM if any the card uses. Supposedly it does. If it turns out that it does not use system RAM, I will probably not use one of my good Matrox cards in it as I will be giving the computer to someone. I found specs on how much onboard RAM the card has, but nothing else.

NVIDIA (GeForce)
GPU model
TI4200
Video RAM
128 MB (onboard)

ltwilliams58 06-23-2015 02:19 PM
Thumb's Rule
 
A discrete video card will typically have its own video RAM, whereas integrated graphics will typically use system RAM. That said, the graphic driver will always take up some system RAM, which would show in lshw or lspci -v (in my case, 288MB total prefetchable 64-bit memory and 16MB non-prefecthable 32-bit memory for a card with 2GB VRAM).

Keith Hedger 06-23-2015 02:20 PM
Top, maybe? htis is mine and apears to show my radeon card not using system RAM
Code:
Tasks: 160 total,  1 running, 159 sleeping,  0 stopped,  0 zombie
%Cpu0  :  1.3/2.0    3[|||                                                                                      ]
%Cpu1  :  0.7/1.4    2[||                                                                                        ]
%Cpu2  :  1.3/0.7    2[||                                                                                        ]
%Cpu3  :  1.3/2.0    3[|||                                                                                      ]
GiB Mem : 40.9/2.922    [                                                                                          ]
GiB Swap:  0.1/5.859    [                                                                                          ]

  PID USER      PR  NI    VIRT    RES  %CPU %MEM    TIME+ S COMMAND                                               
  334 root      0 -20    0.0m  0.0m  0.0  0.0  0:00.00 S  `- scsi_tmf_10                                       
  335 root      20  0    0.0m  0.0m  0.0  0.0  0:07.00 S  `- usb-storage                                       
  336 root      0 -20    0.0m  0.0m  0.0  0.0  0:00.00 S  `- radeon-crtc                                       
  337 root      0 -20    0.0m  0.0m  0.0  0.0  0:00.00 S  `- radeon-crtc                                       
  574 root      0 -20    0.0m  0.0m  0.0  0.0  0:00.00 S  `- iprt


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