VRMtool - a simple tool to read and write to I2C VRM controllers - Page 3 - Overclock.net - An Overclocking Community

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VRMtool - a simple tool to read and write to I2C VRM controllers

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post #21 of 80 (permalink) Old 07-21-2016, 09:30 AM
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+rep

Wish this was open source tho (learning purpose). Does this use its own driver to access the i2c bus or you can do this using the ADL?

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post #22 of 80 (permalink) Old 07-21-2016, 06:07 PM
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Someone tested with 290? :-)

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post #23 of 80 (permalink) Old 07-22-2016, 01:31 AM - Thread Starter
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+rep

Wish this was open source tho (learning purpose). Does this use its own driver to access the i2c bus or you can do this using the ADL?
Currently it uses ADL to access the I2C lines. Regarding releasing it as open source, I'll probably do that at one point but currently the code is an ugly hack to get everything working.


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Someone tested with 290? :-)
I don't think so. Please go ahead and report smile.gif
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post #24 of 80 (permalink) Old 07-22-2016, 05:46 AM
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looks like its working smile.gif but im to scared to change any value biggrin.gifbiggrin.gif

will this be opensource after some time? wink.gif

edit: on windows 10 graphs are little bit broken

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post #25 of 80 (permalink) Old 07-22-2016, 07:56 AM - Thread Starter
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looks like its working smile.gif but im to scared to change any value biggrin.gifbiggrin.gif

will this be opensource after some time? wink.gif

edit: on windows 10 graphs are little bit broken

Regarding open source: see answer above smile.gif

Could you post a screenshot? That way I can see if the values are all sane and what's wrong with the graphs.
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post #26 of 80 (permalink) Old 07-22-2016, 08:03 AM
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https://s31.postimg.org/6dwt4h5aj/vrmtool.png
values looks fine i crosschecked with hawaii bios reader VRM section

what is interesting is that LLC is enabled even on bioses which does not have it in VRM command table O.o

maybe driver is in control of this value?

output scaling and phase gain is prolly not used on 290X

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post #27 of 80 (permalink) Old 07-22-2016, 08:22 AM - Thread Starter
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https://s31.postimg.org/6dwt4h5aj/vrmtool.png
values looks fine i crosschecked with hawaii bios reader VRM section

what is interesting is that LLC is enabled even on bioses which does not have it in VRM command table O.o

maybe driver is in control of this value?

output scaling and phase gain is prolly not used on 290X

Awesome, the values look all good. Only issue is that it seems to detect two IR3567B devices but only one I2C one - which probably means one of the PMBus devices correspond to the unidentified I2C device. Which version of the 290X do you have?

The LLC setting is probably set as a default setting stored in the VRM chip.

Regarding the graphs, I probably just have to draw it correctly for different UI scaling values. I use a 4k monitor @ 125%.
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post #28 of 80 (permalink) Old 07-22-2016, 08:24 AM
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i have reference 290X with [email protected]% biggrin.gif

can you provide more info about LLC slope? it looks like by lowering that value i can get little better efficiency smile.gif

edit: is is somehow possible that LLC setting is other way around?

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post #29 of 80 (permalink) Old 07-22-2016, 09:35 AM
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LLC is other way around biggrin.gif when i press off it enables LLC and when i press on it disables LLC biggrin.gif dunno how that happened but i can see it in gpu-z/afterburner that while i press OFF voltage is constant 1.275V and when i press ON voltage jumps all over the place down to 1.2V

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post #30 of 80 (permalink) Old 07-29-2016, 11:28 AM
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deeper-blue, any chance you could include the memory frequency setting in the tool? Right now its great, but if it could also have that, keeping in mind AMD said "thy frequency shalt not be higher than 2050 Mhz teaching.gif ", it would be the best thing since Babylon 5 biggrin.gif

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