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Thread: 700mhz wall on HD4850 is smashed.

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  1. 06-28-2008, 08:35 AM #1
    DemonEyez
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    Quote Originally Posted by gurusan View Post
    yup i'm very pleased with this gpu.

    Nice going! How much are you feeding the core? and what would you consider safe for 24/7 with water?
    Proc: Q9650 9x496 @ 1.440v batch L844B703
    Ram: 2x2GB OCZFlexII PC-9200 4:5 1240MHz 6-6-6-18 @ 2.12v
    Mobo: Gigabyte EP45-UD3P rev 1.0 - bios F9b
    Video: 2x Palit Dual Sonic HD4870 1GB in CF (840/4400)
    PSU: OCZ PowerStream 520W + Thermaltake VGA 450W
    HDD: 3x250Gb Barracuda 7.10 SATA2 Raid0 (ICHR10) 2x200Gb Barracuda 7.10 SATA2 Raid1 (ICHR10)
    Audio: Audigy 4
    Case: Dual Coolermaster Stacker; one for system rig and one for watercooling loop and cooling

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  2. 06-28-2008, 08:52 AM #2
    gurusan
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    Quote Originally Posted by HousERaT View Post
    How much voltage to get to 920 on the core?
    Quote Originally Posted by DemonEyez View Post
    Nice going! How much are you feeding the core? and what would you consider safe for 24/7 with water?

    Mixture of pencil and bios modding for:

    1.18V idle
    1.48V load

    I set .94v in the bios for the idle state so that it would stay at a low vGPU when not in use
    I think 1.5ish under water would be fine if you keep it at a low idle voltage like I did so that it's not always getting 1.5v
    || 2500K @ 5GHz 1 thread, 4.8 2 threads, 4.7 3, 4.6 4 1.284V ||
    || P8P67-M Pro || 8GB @ 2133MHz ||
    || 5850 @ 1000/1225 || XFX 650W || Silverstone FT03B ||
    || 37" LCD TV || CM Hyper 212+ || Samsung 2.1 Soundbar ||
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  3. 06-28-2008, 09:04 AM #3
    GAR
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    Quote Originally Posted by gurusan View Post
    Mixture of pencil and bios modding for:

    1.18V idle
    1.48V load

    I set .94v in the bios for the idle state so that it would stay at a low vGPU when not in use
    I think 1.5ish under water would be fine if you keep it at a low idle voltage like I did so that it's not always getting 1.5v
    Gurusan, with that bios you made, what can i use to get 1.4v under load to get me around 800-850mhz, can you show me a picture of a pencil mod??? keep in mind im using your bios with 1.2v load and 720mhz on core, thanks.
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  4. 06-28-2008, 09:33 AM #4
    gurusan
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    Quote Originally Posted by GAR View Post
    Gurusan, with that bios you made, what can i use to get 1.4v under load to get me around 800-850mhz, can you show me a picture of a pencil mod??? keep in mind im using your bios with 1.2v load and 720mhz on core, thanks.
    Check page 3 of the voltmod thread.

    and update....I'm now at 950/1200 stable with the same voltage (1.48)
    || 2500K @ 5GHz 1 thread, 4.8 2 threads, 4.7 3, 4.6 4 1.284V ||
    || P8P67-M Pro || 8GB @ 2133MHz ||
    || 5850 @ 1000/1225 || XFX 650W || Silverstone FT03B ||
    || 37" LCD TV || CM Hyper 212+ || Samsung 2.1 Soundbar ||
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