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Display, dedicated and shared memory?

Last response: in Graphics & Displays
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March 8, 2012 4:03:14 PM

Ive got a HD 6790. 1gb DDR5

I get this in dxdiag:

Card name: AMD Radeon HD 6700 Series
Manufacturer: Advanced Micro Devices, Inc.
Chip type: ATI display adapter (0x673E)
DAC type: Internal DAC(400MHz)
Device Key: Enum\PCI\VEN_1002&DEV_673E&SUBSYS_23101787&REV_00
Display Memory: 2803 MB
Dedicated Memory: 1012 MB
Shared Memory: 1791 MB

Current Mode: 1366 x 768 (32 bit) (60Hz)

What are the meaning of display dedicated and shared memory? Is my GPU using system ram ? Cuz i only have 4gbs.
Thanks in advance, been searching for an hour on this and didnt found a proper answer.

EDIT:
OMG im such an idiot those 2 sum up to the amount of display, is there a way to forbid the gpu from using the shared memory?

I mean, I dont play very demanding games, like sc2, hon or wow at mid settings. And I play at 1366x768 so, wouldnt it make it run the games better when i fraps? currently i have major fps problems while frapsing, im thinking if GPU its only using DDR5 ram, then it could improve?
a b U Graphics card
a b } Memory
March 8, 2012 4:16:45 PM

Shared is just the amount of extra memory the graphics card is aloud to use if it surpasses the amount of dedicated memory(whats on the card), it can come from ur R.A.M or your HDD/SDD depending on how much youve allocated ur page file
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March 8, 2012 4:21:16 PM

And what is display memory? since it points to up to 3gbs of ram?
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a b U Graphics card
a b } Memory
March 8, 2012 4:22:38 PM

Display memory is ur dedicated video memory and ur shared video memory summed into one. Essentially the total amount of video memory u can cache
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March 8, 2012 4:29:04 PM

OMG im such an idiot those 2 sum up to the amount of display, is there a way to forbid the gpu from using the shared memory?

I mean, I dont play very demanding games, like sc2, hon or wow at mid settings. And I play at 1366x768 so, wouldnt it make it run the games better when i fraps? currently i have major fps problems while frapsing, im thinking if GPU its only using DDR5 ram, then it could improve?
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a b U Graphics card
a b } Memory
March 22, 2012 4:47:09 PM

It could very well be your processor. What processor are you using at the moment?
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a c 125 U Graphics card
a b } Memory
March 22, 2012 6:11:28 PM

By "frapsing" you mean recording? There's a couple issues there. FRAPS generally drops your FPS quite a bit right off the bat as it puts strain on the GPU. Secondly, it is recording to a HDD (usually) which is slow. If the HDD is a slower model (5200rpm) and mostly full and highly fragmented, for example, then that would cause issues as it can't keep up with the data transfer rate.

Anyway, I recommend you download MSI Afterburner and use their recording tool. Waaaayyy better than FRAPs. Puts more load on the CPU though, but the files are a lot smaller and if the CPU is decent, the FPS drop will be minimal.
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May 11, 2012 1:43:01 PM

Firo40 said that the Display memory is the sum of both Dedicated and Shared Memory. But my graphic card spec's dont follow that definition.

Processor: Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz (8 CPUs), ~3.1GHz
Memory: 8192MB RAM
Page File: 2330MB used, 14033MB available
Card name: AMD Radeon HD 6750
Display Memory: 750 MB
Dedicated Memory: 1010 MB
Shared Memory: 3835 MB

1-Why is my diaplay memory so low compared to others?
2-Is my PC using too much pagefile?
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a c 291 U Graphics card
May 11, 2012 2:21:20 PM

It doesn't really matter, because you cannot change it. DXDIAG is known for giving false information. Use GPU-z instead.
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