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Thread: Asrock Z77 Pro4-M xfast ram utility




  1. #1
    JRwinsom is offline Junior Member
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    Default Asrock Z77 Pro4-M xfast ram utility

    Hi all, 1st post, can AXTU xfast ram use more than 1670 mbs per drive letter? I have the Z77 Pro4-M mb, win 8 pro with 16 gb of the recommended Kingston hyper 4mb ram modules. Can someone explain how to use set up the extra ram in xfast? Thank you, JR.

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    SerWaffles is offline Junior Member
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    Default Re: Asrock Z77 Pro4-M xfast ram utility

    I have a Z77 Extreme 6 running Win8 Pro x64 with 32 GB of G.Skill RipJaws 1600 RAM (4 x 8GB; part: F3-1600C9D-16GXM * 2). When I set XFast RAM to 4 GB, it shows as half full when I reboot (auto start the Extreme Utility). I tried 2 GB with the same result (1 GB used). I don't have the option to save the state checked.

    I am using the latest version of the Extreme Utility here: (v0.1.250)

    ASRock > Z77 Extreme6

    Edit: Note that to change the amount of RAM I need to Stop the XFast RAM utility and reboot the machine. I tried bumping the amount down to 1670 MB and I got the same result of half showing used after Stop / reboot apply change in size in the utility / reboot again.
    Last edited by SerWaffles; 12-02-2012 at 05:10 AM.

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    JRwinsom is offline Junior Member
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    Default Re: Asrock Z77 Pro4-M xfast ram utility

    Thank you for your response, I forgot to add that I'm using windows 8 pro 32 bit. With xfast ram setup, I cannot go any higher amount than 1670 mb per drive letter.

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    incognito7109 is offline Junior Member
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    Default Re: Asrock Z77 Pro4-M xfast ram utility

    Hey man I'm no pro, but I've read that 32 bit windows limits the amount of ram you can use quite a bit. Not sure how much total, but 32 bit OS can only access so much ram. Maybe someone else can chime in.

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    SerWaffles is offline Junior Member
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    Default Re: Asrock Z77 Pro4-M xfast ram utility

    Quote Originally Posted by incognito7109 View Post
    Hey man I'm no pro, but I've read that 32 bit windows limits the amount of ram you can use quite a bit. Not sure how much total, but 32 bit OS can only access so much ram. Maybe someone else can chime in.
    Yes, you can only usually address about 3.5 GB of RAM with 32-bit Windows:

    Memory Limits for Windows Releases (Windows)

    Actual addressable memory is less than 4 GB because of amounts allocated for system resources.

    However, I'm not sure why my x64 system is showing the RAM disk as half full after reboot (with the Backup XFast RAM checkbox unchecked).

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    Default Re: Asrock Z77 Pro4-M xfast ram utility

    Does Windows 8 x86 support the /PAE switch ?
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    parsec is offline Senior Member
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    Default Re: Asrock Z77 Pro4-M xfast ram utility

    Quote Originally Posted by SerWaffles View Post
    Yes, you can only usually address about 3.5 GB of RAM with 32-bit Windows:

    Memory Limits for Windows Releases (Windows)

    Actual addressable memory is less than 4 GB because of amounts allocated for system resources.

    However, I'm not sure why my x64 system is showing the RAM disk as half full after reboot (with the Backup XFast RAM checkbox unchecked).
    When you created the RAM disk, did you also select anything to be stored in it, like the pagefile, browser cache, temp files?

    The 50% usage sounds like you have the pagefile on the RAM disk.

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    SerWaffles is offline Junior Member
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    Default Re: Asrock Z77 Pro4-M xfast ram utility

    Quote Originally Posted by - wardog - View Post
    Does Windows 8 x86 support the /PAE switch ?
    According to this no but it may not be updated:

    Physical Address Extension (Windows)

    According to this yes:

    Physical Address Extension - Wikipedia, the free encyclopedia

    PAE may lead to instability so it should be used with caution and turned off if your system becomes unreliable.

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    SerWaffles is offline Junior Member
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    Default Re: Asrock Z77 Pro4-M xfast ram utility

    Quote Originally Posted by parsec View Post
    When you created the RAM disk, did you also select anything to be stored in it, like the pagefile, browser cache, temp files?

    The 50% usage sounds like you have the pagefile on the RAM disk.
    Good point, parsec. I have all the "use" options checked. What's your opinion on the minimum RAM disk size if you're going to use it on a 32 GB system? Do you know if Windows 8 reverts to the hard drive if it runs out of room on the XFast RAM pagefile?

    Also, is there any point in using the RAM disk as the pagefile since it's taking away from actual RAM?

    Thanks.
    Last edited by SerWaffles; 12-03-2012 at 01:41 AM.

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    Default Re: Asrock Z77 Pro4-M xfast ram utility

    Sorry, forgot about this thread.

    The size of the RAM disk should be balanced between the total amount of memory you have, the greatest amount of memory you use for your programs, etc, and what you are using the RAM disk for. There really are no rules for a minimum size, besides being large enough to be useful to you.

    As long as you have a pagefile, regardless of where it is, I don't think Windows will create another one if the original one is full. What will happen is older entries in the pagefile will be deleted/over written to make space for new ones.

    The ASR RAM disk program seems to use half of whatever size you choose for the RAM disk. You can adjust pagefile size yourself, but I'm not sure if the RAM disk program will change it back.

    Since I use SSDs for my OS drives, and have the option to use the RAM disk for the pagefile, I've checked into when and why it is used, and if you actually need one. It turns out that the pagefile was added to Windows to increase performance in the days when PCs had less than 4GB of memory. Actually, when PCs had only one or two GB of memory. If you have 16GB or more, 99% of users will never have anything written to the pagefile. That is probably true if you have 8GB. The pagefile I had in the RAM disk had space allocated for it, but was never used. I checked the Windows Resource monitor, and the amount of writing to the pagefile was zero. I never use or come close to using the 16GB of memory I have. If you have 32GB of memory, and not using most of it, you could disable the pagefile and never know the difference. I've done that with 8GB of memory, and had no problems.

    If you need more RAM, get the pagefile out of it. It actually is ridiculous to put the pagefile in RAM, as its purpose is to compensate for a lack of RAM. SSD users that want to reduce the amount of writes to their SSDs, move the pagefile elsewhere. Some people claim some programs must have a pagefile. Why would a program use a slower disk device instead of RAM memory? Why can't the program create its own temporary file if it needs one?

    IMO, the pagefile is not needed in modern PCs with 8GB+ of memory.

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