Help identifying Inductor!

xorstl · March 5, 2022

Hi, these can be found in all RX 5700 / RX 5700 XT reference models. Other models tend to use lower value inductors, assuming I'm correctly identifying "R56" as 0,56 uH inductance.

There's a bit of extra room as the cooler has a cut-out for this inductor with lots of extra space, so measurements don't have to match perfectly. This one is 8x8x5mm roughly (width x height x profile), one of the 8mm sides looks to be half a mm shorter or so, but that could be just factory margins. The "1918" part doesn't seem related to size, as you can see in the pics below, same PCB model can contain different numbers there, so looks more like a batch number but correct me if I'm wrong!

Finding this exact model seems impossible, so instead I'm looking for a compatible alternative. I don't know enough about electricity and/or electronics to decide what to buy, but it's under my understanding that this inductor is part of the VDDCI VRM as indicated by the review video from Gamers Nexus. Is this enough info for an expert in the matter to recommend an alternative inductor that will perform similarly?

Pic from my card, before the inductor broke off:

Same exact component, but from TPU high res PCB pics (to demonstrate "1917" instead of "1918"):

The full high res pcb pic from TPU:

(top left, between the top 2 DP outputs and the left side memory chips is the location of this VRM)

Video of the PCB analysis (it's about a 5700 XT, but these parts are all the same in XT and non-XT versions as long as it's the reference model. Comparing the TPU PCB pic of the non-XT vs XT should prove the point):

PS: Btw it fell off because I was too lazy to disassemble by removing the heatsink cover first, but because that inductor was so crooked (as seen in the 1st pic), it didn't really fit in that way and ended up breaking Yes, i'm an uncareful idiot, but this GPU has had a long story and has been disassembled over 20 times in the past 2 months, so I got lazy x) Fact is, the heatsink slides in easily this way if that inductor is not crooked.