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Discussion Starter #1
I just recently built my pc with 6GB of ram using three 2GB cards and for whatever reason 2 gigabytes of ram is being set aside for VRAM. I learned this because i checked my System in the control panel and my ram is marked as 6.00GB(3.96 usable). When i check the video ram amount in DxDiag i get 3803Mb of ram. I tried using msconfig to set the max ram to 6144 but after restarting the pc it immediately switches back to 2GB. If i uncheck the box it goes to 0 but i still get this problem.
 

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Brand & Model of Mobo-CPU-RAM-GPU-PSU?
Brand/specs of the 3x2GB of RAM?
If the Mobo is not Triple Channel, try removing the odd third stick.
 

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Isn't this a default characteristic of Windows? When system memory is being under utilized, Windows will make a portion of it available for use by the video sub-system.
 

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Discussion Starter #5
Operating System: Windows 7 Home Premium 64-bit
Motherboard: Gigabyte GA-990FXA-UD3
RAM: Hynix 1333mhz(dont know the model)
CPU: AMD FD6300WMHKBOX
GPU: Asus HD7770-2GD5
PSU: Seasonic M12II 620 Bronze

No its not default, this ram was being used in a previous system(Dell Inspiron 570) and it used all 6 gigabytes. If anything it should be getting put under more stress since i raised my settings on most games. My motherboard is up to dual channel but i think this ram is even dual channel. Instead its just 3 sticks of single channel.
 

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Using the 3 sticks and Single Channel degrades performance on a Dual Channel Mobo.
 

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Dual Channel Mode commonly requires a matched pair of RAM.
Do you need more than 4GB of RAM? Few games/apps can utilize over 3GB.
If you need more RAM, a matched pair of G.Skill or Corsair 2x4GB 1600MHz would be suitable for the GA-990FXA-UD3.
 

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Discussion Starter #9
I have a set of dual channel ram selected and i play certain games like Planetside 2. When i play this the usage(according to the Windows 7 widget) is at 96-100%. I dont know if this is the beset way to measure usage in fact if someone knows of a good usage counter for pc hardware i'd appreciate a link or something. Im thinking about getting this ram: G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-8GBXL - Newegg.com. Either this ram or the 1866 version of it.
 

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No its not default, this ram was being used in a previous system(Dell Inspiron 570) and it used all 6 gigabytes.
Maybe your previous system's on-board graphics/dedicated GPU did not require much RAM.

I'd still go with Tyree and try dual-channel RAM.
 

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Have you tried using only the 2x2GB?
If you need more RAM, go with 2x4GB.
Is the 1866 is cheaper than 1600? No performance gain will be realized using 1866.
 

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Discussion Starter #12
As of now the 1600 is cheaper because its on sale, so ill probably get it. No i havent tried take one of the sticks out but maybe ill try it later today. AS for the dedicated GPU on the previous motherboard, i never used it. i always used the external 7770, before that i used a external HD6450 both of which have 2GB of vRam and the pc still ran all 6 perfectly fine.
 

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What worked on another PC isn't really relevant as no two PC's, regardless of their similarities, will behave exactly alike.
I would again suggest trying the 2x2GB, to take advantage of Dual Channel Mode and it's performance advantage, before purchasing a 2x4GB pair.
 
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