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Topic: Underclock mem speed on HD 5970 linux? - page 2. (Read 11851 times)

hero member
Activity: 644
Merit: 503
March 24, 2011, 11:34:37 AM
#4
Now that you mention it: what are the benefits of this? Anything else besides slightly lower wattage and temps?
It's supposed to increase hash rate - at least, that was what was observed on Windows. (And lower wattage and temps - if that's all I get I'll still be happy!)
full member
Activity: 216
Merit: 100
March 24, 2011, 11:20:59 AM
#3

I've read about Windows guys having ability to under-clock memory down to 300Mhz on the HD 5XXX cards is there a tool to do this in linux?
Aticonfig seems to be getting its minimum mem clock speeds from somewhere, GPU BIOS, how do the windows clock tools get around that?

E.g:
$ aticonfig --odgc --adapter=all

Adapter 0 - ATI Radeon HD 5900 Series
                            Core (MHz)    Memory (MHz)
           Current Clocks :    725           1000
             Current Peak :    725           1000
  Configurable Peak Range : [550-1000]     [1000-1500]
                 GPU load :    99%

Adapter 1 - ATI Radeon HD 5900 Series
                            Core (MHz)    Memory (MHz)
           Current Clocks :    725           1000
             Current Peak :    725           1000
  Configurable Peak Range : [550-1000]     [1000-1500]
                 GPU load :    98%

indicates the minimum mem. clock speed is 1000 MHz, configurable range [1000-1500].

Is there a --pplib-cmd that will do this perhaps? (related does someone have a list of the --pplib-cmd options?)



Now that you mention it: what are the benefits of this? Anything else besides slightly lower wattage and temps?
hero member
Activity: 644
Merit: 503
March 24, 2011, 10:10:49 AM
#2

I've read about Windows guys having ability to under-clock memory down to 300Mhz on the HD 5XXX cards is there a tool to do this in linux?
Aticonfig seems to be getting its minimum mem clock speeds from somewhere, GPU BIOS, how do the windows clock tools get around that?
...
Is there a --pplib-cmd that will do this perhaps? (related does someone have a list of the --pplib-cmd options?)
Not --pplib-cmd, and I've not tried it (only just found it...) but ATIPower sounds like it might do the job.
legendary
Activity: 3920
Merit: 2349
Eadem mutata resurgo
March 22, 2011, 11:58:54 PM
#1

I've read about Windows guys having ability to under-clock memory down to 300Mhz on the HD 5XXX cards is there a tool to do this in linux?
Aticonfig seems to be getting its minimum mem clock speeds from somewhere, GPU BIOS, how do the windows clock tools get around that?

E.g:
$ aticonfig --odgc --adapter=all

Adapter 0 - ATI Radeon HD 5900 Series
                            Core (MHz)    Memory (MHz)
           Current Clocks :    725           1000
             Current Peak :    725           1000
  Configurable Peak Range : [550-1000]     [1000-1500]
                 GPU load :    99%

Adapter 1 - ATI Radeon HD 5900 Series
                            Core (MHz)    Memory (MHz)
           Current Clocks :    725           1000
             Current Peak :    725           1000
  Configurable Peak Range : [550-1000]     [1000-1500]
                 GPU load :    98%

indicates the minimum mem. clock speed is 1000 MHz, configurable range [1000-1500].

Is there a --pplib-cmd that will do this perhaps? (related does someone have a list of the --pplib-cmd options?)

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