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    Sapphire Toxic HD4850 Crash

    no problem. After reading various comments on here and also even getting a letter puplished in PCZone mag about the issue, I still kept getting crashes, intended to send card back, but never got around to it, so just put up with it, kept machine well cooled and settings on low, with intention to...
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    HD4850 toxic - underclocking

    thanks. i'm in two minds what to do at the moment. I have to say since i turned down the settings and enabled manual fan control to put it at 100%, the one game I was trying to play 'empire total war' is much more reliable, but still not perfect! I wanted to test it a bit more before making a...
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    how to flash the bios on Saphire HD4850 toxic edition

    If I flash the bios on the card, does that invalidate my warranty?
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    HD4850 toxic - underclocking

    thanks guys, really appreciate your help. Fan sounds plausible, but why would they ship with a fan that's not up to it? Where do i find this furmark? what heat level is unstable then?
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    HD4850 toxic - underclocking

    I tried the test custom clocks in CCC and it went to 45 degrees temp and just says passed. MY version of CCC is 09.3 should I change this?
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    how to flash the bios on Saphire HD4850 toxic edition

    thanks. I didn't get any luck with lowering the clock yesterday. what setting do you suggest on the PCI bus?
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    HD4850 toxic - underclocking

    How do i lower the memory? there is a setting on the overdrive saying memory clock, but that's already at the min'm 1100 in a range of 1100-1200, or is there somewhere else I should look?
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    how to flash the bios on Saphire HD4850 toxic edition

    thanks all. i'll try that if i don't get anywhere with a solution someone suggested to underclock the factory settings on the GPU. just taken it down to 600 from 675. so will see if that does anything and if not it looks like flashing the bios or an RMA. thanks all for your help:) I...
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    HD4850 toxic - underclocking

    just been to the catalyst control ATI coverdrive(should have looked there before I guess!) unlocked settings and reduced GPU to 600 from the factory 675. Let's see what happens. The temperature dial in that says 36-37
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    HD4850 toxic - underclocking

    thanks all. Doesn't feel like it's a nice system when it keeps crahing. I will try that ATI catalyst now. How do i monitor card heat? I did suspect maybe it was overheating as it just cuts out during a game:)
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    HD4850 toxic - underclocking

    thanks, i'll try that tomorrow and get back to you. sorry meant to put specs on. My system is: Vista home 2 x OCZ 2GB KIt (2x1GB) DDR2 1066MHz/PC2-8500 Reaper Memory HPC Edition Dual Channel Kit CL5 ASUS M3A 770 Socket AM2+ 8 channel audio ATX Motherboard AMD Phenom X4 Quad Core 9950...
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    HD4850 toxic - underclocking

    I keep getting sysytem crashes and read afew references to removing the factory settings of the overclocked toxic card back to a normal 4850 512mb version. How do I do this?:)
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    how to flash the bios on Saphire HD4850 toxic edition

    I keep getting system crashes and have seen a few references to flashing the GPU BIOS as a solution. How do I do this without a floppy disk?
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    Sapphire Toxic HD4850 Crash

    I seem to have the same problem. How do you underclock the card? I also seem to have seen a few references to updating the GPU Bios on a few sites, how do you do that? My system does not BSOD but does crash and I get a screen of vertical lines. Not always consistent with games. Games...