Just made an account to post here. Digikey has all those pad sizes and more.

Laird Technologies makes some graphite pads that sound similar to what you described with the OG pads. A bit pricey though.

A18330-09 is the manufacturer product number for the 2.25mm on the digikey website (digikey PN 926-A18330-09-ND)

The datasheet on Laird's site looks promising too.

phukin_psycho
Just made an account to post here. Digikey has all those pad sizes and more.

Laird Technologies makes some graphite pads that sound similar to what you described with the OG pads. A bit pricey though.

A18330-09 is the manufacturer product number for the 2.25mm on the digikey website (digikey PN 926-A18330-09-ND)

The datasheet on Laird's site looks promising too.

There are reports that laird is the company that makes the stock ones. The thing to look for is a low shore number.

I used 3mm between the backplate on my 3080 ftw3 ultra along with some 20x20x10mm aluminum heatsinks on top and my memory junction stays around 66-68 while gaming and rarely peaks at 70-72. Peak temps on PWR sensors are around 10c cooler.

Glad I found this thread.  I went thru your ordeal attempting to re-pad an MSI RTX 3090.  No love in that matter.

So now I have an EVGA 3090 FTW3 Ultra, I love it, and it's a stable card with excellent temps.  I ran across these Noctua 40mm 5,000 RPM fans...love them, they even brought temps down 2 celsius.  
 

Had odyssey pads arrive in mail today for my ftw3 3090. Used 2mm for front VRAM and 2.5mm (2mm+0.05mm stacked) on back VRAM. Cleaned the stock putty and replaced with TG-PP-10 from Digikey (leftover from repasting old 2070). Temps look pretty good. Vram junction was at 92c stock running furmark and 98c mining eth (I have a small 80mm fan pointed at back board). With the new pads and putty, temps dropped to 84c furmark and 86c mining. MOSFET temps look a few degrees better but never passed 75c do begin with so didn't care that much.

Great info here. Used a couple of these suggestions on my 3080 ftw3 and have seen decent reduction in temps across the mem junction (~10c) and modules.

I received some replacement pads from EVGA for the 3090 hybrid kit they are branded Ziitek on the removable plastic they ship in.

Redtwofish
I received some replacement pads from EVGA for the 3090 hybrid kit they are branded Ziitek on the removable plastic they ship in.

how can i get them from evga too ? i need 2.25mm pads for my thermal kit . 

I emailed EVGA support because the 3090 I received on a RMA was a refurbished card and it was missing some of the pads, so I asked support for some replacement pads and then sent some out. I think the issue most people have when they repad the card is they are selecting pads with a shore hardness that is way too high and are getting poor contact with the card the factory ones are almost putty like which might be ideal as the surface is uneven.

How do you see your mosfet temps?