Enriched RX 6950 XT OC Formula PCB Breakdown notes (Patreon)

The Asrock RX 6950XT OC Formula has the most powerful PCB of any RX 6950XT. I say powerful because IDK if it has the best voltage regulation (that requires o-scope measurements) and it has no board protection fuses so in the unlikely event that it suffers a VRM failure it could be far harder to fix than some other 6950XTs that do have fuses.

Extra FeaturesDual BIOSLED off switchJ4003 header pads for connecting to card's VRM I2C.Vcore VRMLAYOUT:14phases in total 7 on both sides of the core to reduce power plane impedance.CONTROLLER:Infineon XDPE132G5D 14+2 phases (the +2 is for the SOC VRM)MOSFETS:Infineon TDA21490 90A SPS

MOSFET EFFICIENCYat 600KHz outputting 1.8V(the datasheet doesn't have information for 1.2V)350A ~21W (refrence is ~33W)500A ~35W (refrence is ~60W)

VCORE FILTERING150nH? inductors (reference is 150nH)14x 470uF 2 terminal molded SMD aluminium polymers (refrence has 8x 470uF)

------------------------------------------------------------------------------------------------------SOC VRMCONTROLLER: Infineon XDPE132G5D +2 phases

MOSFETS: Infineon TDA21490? 90A SPS------------------------------------------------------------------------------------------------------Memory VRMLAYOUT3 phases in the top right corner of the memory power plane

CONTROLLERInfineon IR35217 3+2 phases (+2 is for VDDCI)

MOSFETSInfineon TDA21472 70A SPS

MOSFET "EFFICIENCY"3phases of TDA21472s instead of the 2phases you get on every other 6950XT I'm aware of. In other words. VERY OVERKILL

MEMORY FILTERING120nH inductors (reference is 150nH)6?x 470uF 2 terminal molded SMD aluminium polymers (reference has 6x470uF)

------------------------------------------------------------------------------------------------------VDDCI / Memory controller VRMCONTROLLER: Infineon IR35217 2 phases

MOSFETS: Infineon TDA21472 70A SPS

MOSFET "EFFICIENCY" 2phases of TDA21472s instead of the 1phase you get on every other 6950XT I'm aware of. In other words. VERY OVERKILL

------------------------------------------------------------------------------------------------------12V / INPUT FILTERING1 150nH? inductor per 8 pin1 470nH inductor for the PCI-e 12VThe card seems to have 1 12V power plane for all 3 8pins which could make the input filtering more effective by sharing most/all the bulk input caps with most/all? the phases.7x 270uF through hole aluminium polymers (reference has 6x 180uF)5x 100uF 2 terminal molded SMD tantalum polymers (reference has 0)

Based on PCB pictures from Techpowerup's review: https://www.techpowerup.com/review/asrock-radeon-rx-6950-xt-oc-formula/