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790GX Vs new 790FX "hawkfish" MB's

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  • #16
    Originally posted by deanjo View Post
    How about these:

    http://www.amd.com/us-en/Corporate/VirtualPressRoom/0,,51_104_543_15434~127446,00.html

    http://www.anandtech.com/cpuchipsets...oc.aspx?i=3360

    http://www.hardwarezone.com/articles...?cid=6&id=2618

    http://www.bit-tech.net/hardware/200...gp-and-sb750/1

    http://news.softpedia.com/news/SB750...ed-90672.shtml

    http://www.fudzilla.com/index.php?op...=6956&Itemid=1

    Plus hundreds of others, people expected alot from this chipset. Of course the hyped OC'ing capability of the chipset is pretty much a useless feature in linux as there is no overdrive utility for linux (such utilities are badly absent in linux).
    They're hardly useful, except for GPU based overclocking, so I for one don't miss them. Software based overclocking for the CPU/chipset always ends up with stability problems. GPU overclocking with Overdrive is not that great either (very small margins for frequency adjustment and the stress tool could be better), but for now it should suffice. Still, if you're going for the pure principle of the thing, Overdrive should be fully supported in Linux as well (even if it does not end up being too useful). As for the SB750 itself, given that disk and USB controller performance is the biggest reason to choose one SB over another, I say that it is a big letdown.

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    • #17
      Originally posted by Melcar View Post
      They're hardly useful, except for GPU based overclocking, so I for one don't miss them. Software based overclocking for the CPU/chipset always ends up with stability problems. GPU overclocking with Overdrive is not that great either (very small margins for frequency adjustment and the stress tool could be better), but for now it should suffice. Still, if you're going for the pure principle of the thing, Overdrive should be fully supported in Linux as well (even if it does not end up being too useful). As for the SB750 itself, given that disk and USB controller performance is the biggest reason to choose one SB over another, I say that it is a big letdown.
      Granted software OC'ing is the bastard child of overclocker enthusiasts, but is improving with each generation. Where it is nice is that gives usually a good starting base with it's results so that other methods can be applied such as the soon-to-be-dead bios methods. With systems gradually making the transition to software based alteratives (EFI for example) it is the future of OC'ing. It would be in the best interest of all parties to start refining the technology and spreading it across all platforms so when it does become the defacto standard we are not starting from scratch in linux and other OS's.

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      • #18
        Originally posted by deanjo View Post
        Of course the hyped OC'ing capability of the chipset is pretty much a useless feature in linux as there is no overdrive utility for linux (such utilities are badly absent in linux).
        I totaly disagree. You do not have to use AMD overdrive utility to oc you cpu/memory/gpu! It's possible with bios tweaking - as always. 790GX is about ACC (advanced clock calibration).

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        • #19
          Originally posted by Kacper86 View Post
          I totaly disagree. You do not have to use AMD overdrive utility to oc you cpu/memory/gpu! It's possible with bios tweaking - as always. 790GX is about ACC (advanced clock calibration).
          I did not say you cannot OC with the BIOS. ACC is all about overclocking, that's it's sole purpose. It has also been proven time and time again that with ACC people are getting substantially higher OC's with it. What a utility allows via software is the ability to OC when needed and cut back when it's not without having to jump into the bios everytime to revert settings when OCing is or not needed. Nothing like roasting up a system websurfing and then having to reboot and the OC back up when you want to do something like video encoding, rendering or something else that can benifit from the extra boost in speed. One of the key features of linux is the ability to go eons without rebooting. A software app allows the dynamic clocking based on the current need without having to reboot.

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          • #20
            well, there is one thing - all the tests are windows test. So they aren't very useful. I am at the moment looking for a new board. And I found that Vista SP1 greatly reduces the usb performance of amd southbridges. So.. if the tests were done with Vista SP1 you can ignore them.
            http://www.pctreiber.net/thread.php?threadid=9448

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            • #21
              Originally posted by energyman View Post
              well, there is one thing - all the tests are windows test. So they aren't very useful. I am at the moment looking for a new board. And I found that Vista SP1 greatly reduces the usb performance of amd southbridges. So.. if the tests were done with Vista SP1 you can ignore them.
              http://www.pctreiber.net/thread.php?threadid=9448
              Really ? Then I guess we need some "standardised" tests...

              How about Linux 2.6.26 i686 Kernel and EXT3 file system ?

              PS: I suppose the speed would be higher with XFS ?

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              • #22
                Originally posted by deanjo View Post
                I did not say you cannot OC with the BIOS. ACC is all about overclocking, that's it's sole purpose. It has also been proven time and time again that with ACC people are getting substantially higher OC's with it. What a utility allows via software is the ability to OC when needed and cut back when it's not without having to jump into the bios everytime to revert settings when OCing is or not needed. Nothing like roasting up a system websurfing and then having to reboot and the OC back up when you want to do something like video encoding, rendering or something else that can benifit from the extra boost in speed. One of the key features of linux is the ability to go eons without rebooting. A software app allows the dynamic clocking based on the current need without having to reboot.
                I agree that a software tool for overclocking would be nice. Apparently phenom use msr's to set a lot of these parameters, which I would guess AOD might use, too. I played around with setting the msr's, but didn't see any noticeable effects for over/underclocking. I was able to disable the TLB fix on a phenom 9600 by modifying the proper msr (my bios doesn't have an option for it). I posted that in the forums here.

                There are details on setting speeds/voltages/etc here:http://www.xtremesystems.org/forums/....php?p=2806501

                Maybe someone with some more time can figure out if it is possible to change this on the fly in linux.

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                • #23
                  the speed would be highest with reiser4
                  and don't forget the barrier option - ext3 hates your data so it is turned of, while reiserfs and xfs love your data and have it turned on.

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