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WattTool: A simple tool that combines overclocking with VRM monitoring/tweaking for RX 400 series - Page 3

post #21 of 362
what about negative voltage offsets?


It seems the lowest voltage is at about 600mv for polaris chips.

I ran my rx 470 already at 800mv stable at 1000 mhz.

I would love to be at least able to play around with voltages as low as 600mv.

If it is easy for you to add eg. up to 64x or even 96x 6.25mv offsets into the negative!! I would appreciate it.
(I fully understand that even +250 mv is crazy)



(Underclocking/undervolting is an art of its own but gets neglected so often.)
post #22 of 362
My system shows this with two RX480 reference.
Hope it helps smile.gif

post #23 of 362
Thread Starter 
Quote:
Originally Posted by Snipie-PT View Post

My system shows this with two RX480 reference.
Hope it helps smile.gif

Ok, thanks. So i assume, only the card driving the display is "active". Can you change settings of your second card with the "6/6/..." entry selected?
Quote:
what about negative voltage offsets?

I dont have the full datasheet of the IR3567B. -1 could equally well be 255 if the value is unsigned.
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post #24 of 362
Quote:
Originally Posted by BromoL View Post

Ok, thanks. So i assume, only the card driving the display is "active". Can you change settings of your second card with the "6/6/..." entry selected?

It seems with that 6/6/.. selected and below, its random when the second card appears...
Sometimes it gives an error saying 'OverdriveN not enable or not supportet on this adapter!" in let's say for example, 8/8/2/0, but if I select again that setting it may show the second card or not... It's really random...

Sorry for the late response, I was out! smile.gif
post #25 of 362
what is "overdriveN not enabled or not supported" message? the tool doesn't start with that error
running rx480 with modbios
Edited by mikhan - 8/28/16 at 6:30pm
post #26 of 362
Thread Starter 
Quote:
Originally Posted by Snipie-PT View Post

It seems with that 6/6/.. selected and below, its random when the second card appears...
Sometimes it gives an error saying 'OverdriveN not enable or not supportet on this adapter!" in let's say for example, 8/8/2/0, but if I select again that setting it may show the second card or not... It's really random...

Sorry for the late response, I was out! smile.gif

OverdriveNext is the API for Wattman. I use ADL2_Overdrive_Caps to check whether Overdrive is supported and enabled. Thats probably not working correctly. The SDK sample does not check these flags.

There is also a function ADL2_Adapter_Accessibility_Get with the description
Quote:
Some GPUs enter into various power savings mode when not in use, and during this time, direct access to the GPU can result in failures. Access through proper channels (such as via ADL) always works because the software accounts for the GPU's accessibility. However, direct access outside of authorised mechanisms may fail. Use this API to find out if the GPU is currently accessible or not. If API returns GPU accessible, this status will be maintained for 2 seconds.

So i assumed, that accessing a GPU through ADL always wakes it up. But who knows what "proper channels" actually means.

I will upload a new version that selects the active adapter by default and only shows one entry per unique adapter. Furthermore i will remove the caps check and only check for overdrive version. But for the moment i dont know how to wake up inaccessible adapters.
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post #27 of 362
Thread Starter 
I uploaded the new version. It has a button for switching I2C monitoring on/off.

I replaced some error checks. You should no longer get the "OverdriveN not enable or not supportet on this adapter". But if text fields are all zero or other garbage, dont press any buttons other than the new refresh button or select another card.

The refresh button might also help with waking up inaccessible adapters in multi-gpu configs. But obviously i could not test this with my single card.
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post #28 of 362
Dude! you can set P0 That's wonderful. That could solve some issues people are having. +1 rep. Plus putting the voltage offset in there makes this really useful for me. I'll give it a go. Thanks!
post #29 of 362
Thread Starter 
Quote:
Originally Posted by greytoad View Post

Dude! you can set P0 That's wonderful. That could solve some issues people are having. +1 rep. Plus putting the voltage offset in there makes this really useful for me. I'll give it a go. Thanks!

Changes to P0 wont apply. The API simply reverts them to default values. The voltage offset does apply to P0.
Edited by BromoL - 8/29/16 at 2:06pm
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post #30 of 362
Yeah. my old voltage offset applied there too. Good work though. Any way to make it compatible with HWiNFO64? I can't run that with your tool at the same time or I start getting weird performance results. My Valley score suddenly was 25% lower. Rebooted and used built in tool with my old voltage offset and I was fine. Haven't gone back to your tool as I need mem error reporting for my current testing. I assume that was what caused the problem. If you're not aware of a problem, maybe it's just a fluke. I was running at 1450 at the time. I"m also back to 16.7.2 drivers and embd 1.1r2. embd 1.2 wont load on 16.7.2 for some reason.
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