you can try up vddc. vddci leave alone it is not related to memory and won't help
there is common misconception on the internet "VDDCI memory controller" - no such thing
VDDCI is either related to PLL or PCI controller, or both on cost effective desgins
memory controller part of the GPU is tied to memory VRM and shares power rail with GDDR5 chips

@ket Appreciate if you can you help me make a stable 2200mhz strap for my micron rx580. Atm I just cant afford a new graphics card as prices are crazy where I leave.

Hi,

I just found this wonderful forum a few hours ago... Just wanted to say thanks for all the helpful information here...

Sad to see a forum like this to go down :( If there is anything we could to to help out at least to preserve valuable information like this, it would be wonderful.

@Sabbelbacke Yea, it's definitely sad to hear the forum is closing down. I will attempt to archive at least this thread using WinHTTrack Website Copier. Actually just saved every page using Firefox's save page as function. It worked just fine.

As an update about my XFX RX570 8GB, I will receive my thermal pad on the 22nd of November, after which I will do my fan mod on the card(deshroud + installation of 2 Arctic P12 fans + new thermal paste and new thermal pad on VRM). In the meantime, I have attempted an undervolt and began to use Shadow of the Tomb Raider to benchmark it. I've managed to go down to 1000mv at 1286mhz(the card's stock core clock), which is a massive 125mv decrease from the card's stock voltage. I have lowered TDP and Power Limit to just 112W and the GPU doesn't seem to use more than 109W during the benchmark. It scored 59FPS which seems to be on par with some RX580 scores I've seen online and just 1FPS under the 60FPS score I got at 1320mhz. poclmembench results are the same with 220GB/s at both 1286mhz and 1320mhz. It's quite amazing how memory-bound Polaris is, with only a 1.66% decrease in FPS for a 2.6% decrease in core clock speed and a 3.56% decrease in core voltage. I am now able to run the card's stock fans at only 60% and stay under 70C. Still kinda noisy but not unbearable.

@TheVic1600 can you send me the strap you are using so I can try it in mine to see if its stable at the same time I will be dropping my memory from stock 2100 to 2050 you seem to run. I get 215Gb in poclmembench with 2200 mhz I prefer to try yours and maybe get 220

@fapador My card has Samsung VRAM, so my strap will probably not be stable on your Micron VRAM. Samsung VRAM won't run past 2050mhz but will work with tighter timings, so your Micron VRAM might not 'like' those tighter timings.

Anyway, I'm using more or less this strap: 777000000000000022CC1C00106A5D4DC0691016B78D160B0068C70014051420FA8900A00300000015153F48B1384C1A

That gave me 222GB/s at 2050mhz memory clock and 1350mhz core clock. You should decode that strap and have a look at the tutorial on the 1st page to see how you could modify it to better suit your Micron VRAM.

@TheVic1600 Yes I know. Thank you very much anyway. I will try and report back.
Just a reminder my card's memory came with the first three timings set to 999 just to be able to work at 2100 factorys setting. Anything I try at 777 wont run at 2100+ with my mem