Sorry …
This is the work of developer79, and I have his permission to share the review of the heatsink only. If you want to know about the modifications, you can ask him directly, as he is the one who did the work, not me.
greetings…
I don’t remember the layout
But it’s easy to align it by eye when you place the heatsink on the graphics card, or if you want something more precise, you can watch this video and use a millimeter measuring tool.
I bought two copper sheet 1.2mm and 0.8mm thickness and started to use 1.2mm thickness to fix the p870tm cpu heatsink by using copper sheet between IHS and the heatsink to fill the gape between them using kryounut thermal paste and i use a Liquid Metal when i delided 8700k cpu. So the results is great now and the thermal throttling gone.
If you found crucial ballistix 1.35v CL16 32gb 3200mhz ram kit then go ahead and buy it i have that kit it’s amazing . It’s 2666mhz 1.2v at stock so i activate the XMP to be 3200mhz with 1.35v . and for the heatsink i have p870 i got my modded heatsink from developer79
Don't worry about the thermal pads. It will be easy for you to adjust their thickness when installing the card. The important thing is to find the modified heatsink for RTX 3080.
i bought my ram & RTX 3080 from ebay in used condition 60 USD for ram and 370 USD for gpu ... but gpu looks new when arrived from this seller and bought the modded gpu vapour chamber heatsink from Developer79
https://www.ebay.com/itm/204675787869?_trkparms=amclksrc%3DITM%26aid%3D777008%26algo%3DPERSONAL.TOPIC%26ao%3D1%26asc%3D281663%26meid%3Dc0f28afed0994baf9d9e35d0714febd3%26pid%3D101771%26rk%3D1%26rkt%3D1%26mehot%3Dpp%26itm%3D204675787869%26pmt%3D0%26noa%3D1%26pg%3D4375194%26algv%3DWatchlistVariantWithMLR_BP%26brand%3DCLEVO&_trksid=p4375194.c101771.m47999&_trkparms=parentrq%3A460fd82a1950a8dc244071a5ffff788a|pageci%3Ade76c662-f4d2-11ef-bc84-aa661d18f299|iid%3A1|vlpname%3Avlp_homepage