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Z68 Chipsets 'Max Shared Memory' and My GPU

From what I am reading, I think my GPU might have more available memory than the Z68 chipset can use...

GPU: EVGA GeForce GTX 580 3072 mb (3gb, Fermi. #03G-P3-1584-AR 384-bit GDDR5)

MOBO: ASRock Z68 Extreme 4 (Chipset "Max Shared Memory 1759 MB")

It is disturbing that I might not be using nearly half of the GPU's memory potential; is that really happening here? Any opinions would be greatly appreciated.


Here are some other system specs (better to have too much info than not enough):

i7 2600k (3.4 ghz. LGA 1155, "With Intel HD Graphics 3000")

GSkill Ripjaws X Series 2x4GB (DDR3 1600MHz PC3-12800 240-Pin Desktop Memory Model F3-12800CL8D-8GBXM)

WD Caviar Black 1TB (SATA 6 GBPS)

Seasonic 850 Watt PSU
8 answers Last reply Best Answer
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  1. Best answer
    It is max shared memory if you are using the built in HD3000 on your CPU!
    Your discrete GPU still has its 3GB.
  2. Thanks man, I feel a hell of a lot better knowing that I didn't waste my money. I'm new to pc gaming so I apologize for my ignorance.
  3. No problem.
    If you are not using the HD3000 set shared ram down to 0 so you have all your system ram available for other system resources and programs.
  4. Do you think there's any benefit to using the HD3000? The mobo came with software (Virtu) that lets you use the gpu and cpu to handle the graphics workload together. I've been doing it that way until I messed with the settings and it started making the system very unstable. (I'm going to see if I can re-create the issue tomorrow to rule out other causes)
  5. The only reason really to use it with GTX580 is if you do encoding at can use Quick sync.
  6. Again, many thanks. You have helped immensely and it's greatly appreciated.
  7. Best answer selected by bebop460.
  8. This topic has been closed by Nikorr
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