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Thread: Amaze HD4890 - NCP5388 based - pencil and other mods ?

  1. 08-18-2009, 04:19 AM #1
    eva2000
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    Question Amaze HD4890 - NCP5388 based - pencil and other mods ?

    Anyone tried an Amaze HD4890 850/975 stock card with non-reference PCB and OnSemi NCP5388 0917 dated controller with Qimonda memory ? It's same PCB design as Powercolor PCS HD4890

    Any possible pencil or volt mods ?

    1GB Amaze HD4890














    looks exactly like Powercolor PCS HD4890 PCB below.







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  2. 08-18-2009, 05:00 AM #2
    Splave
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    I have 2 powercolors that are the exact same as the amaze, I have the zerotherm cooler card as well but its a different pcb.
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    Quote Originally Posted by L0ud View Post
    So many opinions and so few screenshots
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  3. 08-18-2009, 05:06 AM #3
    youngpro
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    please measure resistance between pin 19 and ground on voltage controller
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  4. 08-18-2009, 05:34 AM #4
    massman
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    Hm, if you mod through the FB, you'll be hitting the OVP at around 1.48V.

    If you want to go higher, you'd better do a VID modification as well.
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  5. 08-19-2009, 03:10 AM #5
    massman
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    Hm, I even think VID mods will be easier (pencil).

    Can you provide a high-res close-up of this area:

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  6. 08-19-2009, 04:55 AM #6
    eva2000
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    Close Ups of the OnSemi NCP5388 Controller etc. Click thumbnails below for larger photos.




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  7. 08-19-2009, 05:10 AM #7
    massman
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    Any idea about stock voltage?
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  8. 08-19-2009, 06:05 AM #8
    eva2000
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    according to RBE 1.3125v is stock 3d volts
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  9. 08-19-2009, 06:21 AM #9
    massman
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    Okay, that's what I hoped for. I'll make the picture later today; it's really easy.
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  10. 08-19-2009, 08:29 AM #10
    W1zzard
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    nice pics

    that card has no i2c support, so i doubt what rbe says is accurate. many manufacturers leave the volterra voltage code in the bios so they dont have to request special stuff from ati
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  11. 08-19-2009, 08:50 AM #11
    eva2000
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    Quote Originally Posted by massman View Post
    Okay, that's what I hoped for. I'll make the picture later today; it's really easy.
    thanks much appreciated
    Quote Originally Posted by W1zzard View Post
    nice pics

    that card has no i2c support, so i doubt what rbe says is accurate. many manufacturers leave the volterra voltage code in the bios so they dont have to request special stuff from ati
    Thanks... didn't know that, so guess need to know the read points for voltages too.

    RBE Bios Profile

    Has same bios checksum value as Powercolor PCS+ HD4890













    ---
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  12. 08-19-2009, 09:00 AM #12
    W1zzard
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    > read points

    yes that would be a good idea, but you can figure those out yourself using the caps on the back

    afaik software cant monitor this chip, can it ?
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  13. 08-19-2009, 09:07 AM #13
    eva2000
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    Everest seems to be able to but rivatuner somewhat



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  14. 08-19-2009, 09:20 AM #14
    W1zzard
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    i see nothing related to voltage / voltage regular on those screens
    techPowerUp! | GPU-Z | VGA Bios Collection
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  15. 08-19-2009, 09:24 AM #15
    eva2000
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    oh i thought you meant temps... yeah nothing for voltages AFAIK, unless rivatuner has stuff hidden ??
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  16. 08-19-2009, 11:19 AM #16
    massman
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    Please verify if the voltage is really 1.13125V with a digital multimeter. I'm pretty sure it's correct, but wouldn't want to be wrong .

    Where courage, motivation and ignorance meet, a persistent idiot awakens.
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  17. 08-20-2009, 06:48 AM #17
    eva2000
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    Well I grabbed my Digitech QM1538 multimeter (old batteries so not sure of it's accuracy) and measured at the following locations and got for GPU volts 1.206v idle and 1.378v load for 3dmark06 and 1.391v load for GPU Tool stability test. Looks like maybe the card is already overvolted to hit 850/975 so poor clocker to start with ? Or my multimeter is off heh.

    Not sure what 1.604v idle/1.62v load volt is ? Memory ??

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  18. 08-20-2009, 07:00 AM #18
    W1zzard
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    1.4v vgpu under load sounds reasonable
    techPowerUp! | GPU-Z | VGA Bios Collection
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  19. 08-20-2009, 11:50 AM #19
    Martin.v.r
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    can you use the Guide here?
    http://www.octeamdenmark.com/forums/...ead.php?t=3958
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  20. 08-20-2009, 10:59 PM #20
    EXPANDER
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    Powercolor hd 4890 1gb pcs+
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  21. 12-24-2009, 06:39 AM #21
    Brutuz
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    Sorry for the bump, but has anyone got a vmod for this card?
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  22. 01-16-2010, 08:50 AM #22
    wielboy
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    So, is there anyone who can do pencil mod for this card?
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