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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 55

post #541 of 3337
HHi, did anyone sucsesfully flash new bios on 470/480 with windows 8? I have error 43, and windows can`t see my card. Some problems with driver sining I think.
post #542 of 3337
I should post here that Sapphire is letting me RMA my card as long as I return it to factory condition before I do so. Since the memory controller issue, shimmering digital snow, and distortion appear to be a hardware issue and not to do with the waterblock, they're going to allow me to RMA it. That's really nice of them. They don't have to do that since technically I voided the warranty when I took the factory cooler off. Kudos to Sapphire. Stand up company. (I didn't tell them I'd flashed the bios, but I'm running stock again anyway.)

However it's really hard to give up my rx480. My display died and I replaced it with a 50inch 4k Vizio D50u-D1. I must say, it handles gaming really well. Very little motion blur and much less input lag than my last display. At 30fps it looks smother than my old display at 60fps. Maybe it's the judder control. Text is clear. I'm going to have to deal with up-scaling for a few weeks and no hi-rez gaming to do the RMA. sadsmiley.gif I'm gaming mainly in 1440p on this card as 4k is just a little much for rx480 right now. 1440p upscaled to 4k looks really nice. I can't do the action motion smoothing with gaming. I can't stand the flicker. Also, I really wish it did higher than 60hz frame doubled or something. I can still notice a tiny bit of a flicker at 60hz. It bothers me reading more than gaming so a frame doubled physical 120 even with an actual input refresh of 60 would solve that problem for me. Too bad no TV in the world does that yet at 4k. If one does, I probably can't afford it. Gaming mode adds just a slight ever so slight amount of flicker it seems, but the fast response time and lack of motion blur make it really nice. I turn it off for working though. It'll be hard to give up 4k for a few weeks. Maybe I'll sell my replacement card and get Vega or if there's ever an affordable Nvidia flagship card or I'll get a 2nd rx480 but I'll have to wait a few months. The TV purchase was an unexpected expense.

I'm still not sure why i lost some overclocking headroom on the memory after doing the 1750 timings on 2000 for one and only one Valley run. The issues that have plagued my card from day one may have something to do with it. I think it's the memory controller. The digital shimmering snow I get in some textures and only in a couple of games with 0 memory errors is odd for bad gddr5. I'd say it's the controller but I don't know. It got worse and there were black flashes and flashing textures here and there in games that hadn't previously done it after the 1 valley run. I don't think it was persistent post-flash timings since I re-flashed the correct timings three times and it consistently dumps the correct settings. The issues with the card seemed to get worse after that. Browsers freeze if I leave hardware acceleration on about once every 12 hours. It doesn't occur on the integrated video in the same computer. It didn't occur until after the memory timing test. The RMA is necessary, I just most likely wont get as good of a overclocker in return. I guess I'd rather have a working card though. I'd much rather have both. The extra 14% performance from oc really helps in 1440p too bad the fault in my card was exacerbated by how hard I tired to push it. Thanks for your suggestions.

@rubio - thanks to lordkag on www.win-raid.com, Gupsterg and the op of this thread there's a way to flash a custom bios on this card. Follow the link in Gupsterg's post and consider donating to win-raid if it works for you. http://www.overclock.net/t/1604567/polaris-bios-mod-rx480/430#post_25427078. Worked for me.
post #543 of 3337
Quote:
@rubio - thanks to lordkag on www.win-raid.com, Gupsterg and the op of this thread there's a way to flash a custom bios on this card. Follow the link in Gupsterg's post and consider donating to win-raid if it works for you. http://www.overclock.net/t/1604567/polaris-bios-mod-rx480/430#post_25427078. Worked for me.
It`s for windows 10, it`s not working in windows 8.
post #544 of 3337
Quote:
Originally Posted by kaptain345 View Post

So, if the Memory voltage control is a dummy feature in the reference RX480, why in GPU-Z (version 1.10.0) my VDDC shows a reduced value after doing some undevolt to the VRAM? also my GPU becomes unstable if i dont underclock the memory with that undervolt applied.

Like others have said this is the Memory CONTROLLER voltage on the actually GPU die, which has nothing to do with the actually Memory Chip voltages (which seem to be hardware locked at 1.5v on most 480/470 PCBs).

This also explains why you can lower the GPU core voltage below the Memory Controller voltage (since the Mem Controller voltage feeds off what is supplied to the GPU core so core voltage can't go below what Mem Voltage is set at)...at least thats my theory for now.
post #545 of 3337
Quote:
Originally Posted by rubio View Post

It`s for windows 10, it`s not working in windows 8.

Sorry, people in the thread had it working in 7 and I had it working in 10. The patch has files for windows 8.1 I assumed they worked as long as you test sign the sys file.
post #546 of 3337
Hey, would it be easy to give my reference xfx black edition 8gb rx 480 a default ram frequency of 1600 mhz at default latencies. Pretty much I want to undervolt my card. I am trying to lower the gpu voltage all the way to the minimum .8 volts but what I found out is the gpu volts according the GPUz seem to be limited by your ram voltage. At the ram's default 2GHz frequency I cant get ram voltage below .875v.
post #547 of 3337
Quote:
Originally Posted by greytoad View Post

Sorry, people in the thread had it working in 7 and I had it working in 10. The patch has files for windows 8.1 I assumed they worked as long as you test sign the sys file.
I have no idea what`s wrong. but nobody I know could get it to work on windows 8.
post #548 of 3337
The steps I used to get it to work on windows 10 roughly are:

1. With the stock BIOS installed, uninstall the current video drivers through the setup program.

2. Restart in SafeMode using MSCONFIG.

3. Run DDU and restart in normal mode.

4. Install stock 16.8.2 driver from normal mode.

5. From an elevated command prompt (run CMD.exe by secondary clicking and choosing run as administrator), type "bcdedit /set testsigning on"

6. Reboot into Safe Mode.

7. Copy the correct patched atikmdag.sys and paste it into the Windows\system32\Drivers folder and overwrite the existing file.

8. From safe mode launch the dseo13b.exe from an elevated command prompt. (My virus protection prevents me from running this properly from normal mode and you can't just right click and choose run as administrator on it to get it to run correctly in safe mode. At least in windows 10 on my computer it wouldn't run that way.)

9. Enter the path for windows\system32\drivers\atikmdag.sys into the prompt in dseo13b and test sign the sys file.

10. Reboot into normal mode and make sure the driver loads with the new sys file.

11. Follow normal flash procedures and load your custom bios. Reboot and reset wattman to load the new powertune settings.

Sorry if that's roughly what you already tried. Weird that windows 7 and windows 10 patches would work but not Windows 8.1.
post #549 of 3337
Quote:
Originally Posted by greytoad View Post

The steps I used to get it to work on windows 10 roughly are:


Sorry if that's roughly what you already tried. Weird that windows 7 and windows 10 patches would work but not Windows 8.1.
Yes I tried this, I tried load without driver signing, I tried disable signing in windows settings, doesn`t work. Maybe it`s because there was no atikmdag.sys in this folder in the begining. At least 2 people with windows 8 has the same problem an gave up.
post #550 of 3337
Quote:
Originally Posted by rubio View Post

Yes I tried this, I tried load without driver signing, I tried disable signing in windows settings, doesn`t work. Maybe it`s because there was no atikmdag.sys in this folder in the begining. At least 2 people with windows 8 has the same problem an gave up.

What do you mean there wasn't an atikmdag.sys in c:\windows\system32\drivers ? With the drivers installed it should be there in windows 8.1. Assuming C is your system drive. That's where the driver loads even in windows 8.1 as far as I know. Otherwise people wouldn't get BSODs in C:\windows\system32\drivers\atikmdag.sys in windows 8.1. I know when I first tried it I didn't search for atikmdag.sys and put the file in the wrong place and it didn't work until I removed that file and put the file in the correct place. I suggest from a clean install of the drivers and with your pasted version manually deleted, search for the file and find it before you replace it. Make sure you have show hidden files and folders selected and remove the check from hide protected operating system files in folder options.
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