On 31/10/09 05:10, "PETER WARNER" <pe...@petermwarner.com> wrote:
> Having updated the ROM to the August 05 (130), I still had the same
> problems. Then I re-read this, and it caught my eye. My stock
> frequencies in ATIccellerator II are listed as Processor 378 MHz, and
> Memory 337.50 MHz. So I took your advice, and underclocked down to
> the 9700 speeds you listed, and the problem went away. I then,
> slowly, brought them back up, evenly, until I got corruption again. I
> then went back a step or two until I had a stable display. The
> settings are now Processor 353.25 MHz, and Memory 315.00 MHz. Go
> figure... Why would my card have the higher frequencies set in it?
> And, will underclocking damage the card?
>
> Thanks so much for the help everyone!
>
> One other thing, ATIccellerator lets you set it to the custom frequencies at
> login. But during boot/the Login screen, it still has those higher
> frequencies. if they are to high, can that be damaging my card? Is setting
> custom frequencies something Graphiccelerator can do in the ROM? And is that
> worth the risk of playing around with?
> Peter
378/337 are the standard speeds for the pc version of this card -
350/300 WERE the standard speeds of the ME though they may have changed up
to 378/337 over the life of the card as the core was updated to R360 from
R350 and faster memory was used. Underclocking will not in itself damage the
card and is a good way to get more mileage from high power graphics cards as
they run proportionately cooler - but underclocking will not repair a card.
A card with artifacts at stock speeds has some kind of problem - if it
disappears when the card is downclocked the problem is likely overheating so
the first thing I would do is service the heatsink and fan or look for an
alternative like an IceQ - though their bulk is a problem.
The higher frquencies at boot are unlikely to damage the card as the
performance required from it at that stage is pretty low but downclocking
can be done permanently by editing the speeds in the rom with
Graphiccelerator and flashing the revised rom onto the card. It wouldn't be
my first course of action as the card would still have unsolved problems -
so I would try and get it back to 100% working at full speed first. But if
you've never removed a heatsink and are hesitant to mess with it the
downclocked flash would be an alternative choice. Strange how it seems to
like the old standard ME speeds 350/300 ish......
Pete
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