Aurora R10, small VRM heatsink

Another part number I've seen is N1C1D, which is an L-shaped heatsink that covers both the side and the top VRM modules. Pic. Not sure how you'd go about ordering that from outside the US though. Here in Canada, for example, I had no other choice than to buy my VRM heatsink from Amazon. (different model than what you're looking for, but just to say that only US folks seem to have the luxury of ordering these direct from Dell at really low prices).

The internal Dell SPMD (Spare Parts Master Database) only shows one VRM, 4D5V9. But, this is not available to buy from Dell.

N1C1D is for the R11, not sure if the hole spacing is the same as R10.  Hole spacing is different for R5 to 9, than it is for R11.

R11 VRM heatsink below. Notice its connected with a copper base.

I think @Anonymous has a photo of the 2 piece R10 vrm combo.  Some people with the 3950X I believe shared photos showing a 2 piece VRM set on the R10.  I don't think I've noticed it on any other configs.

Ok I (and by I, I mean google, this isn't a pic of my PC) found a photo of the R10, 2-piece combo on the VRM heatsink.  Notice, no copper base and size appears shorter than the R11.

Another part number I've seen is N1C1D, which is an L-shaped heatsink that covers both the side and the top VRM modules.

Actually,  on the R11 VRM heatsink, I think that top extension piece connected with the copper heat pipe is just to dissipate additional heat from the voltage regulators on the left side of the CPU.  I believe it floats above the motherboard and does not contact any electronics. Otherwise, there would be a thermal pad involved.

R11 VRM heatsink

R10 VRM heatsink

Searched the whole internet, and finally got a hold of someone at Dell parts sales chat that got me both parts:

TOP HEATSINK $12.99 part# 4D5V9 --- 

ASSY,HTSNK,VR,CPU,RYZEN

LEFT SIDE HEATSINK $1.25 part# J46J2 ---

Assembly,Heatsink,Video Resolu tion,Central Processor Unit,95 W,R5

That is great, did you found a place to buy them ?
For my part i live in NL and I have no idea where to find them ....

Large Heatsink Part Number: J4642

Small Heatsink Part Number: 4D5V9

Were you able to actually order 4D5V9? I've been contacting Dell chat support weekly for almost 2 months and every time they give me the same exact response that it's currently out of stock and that I should try again later. How can such a tiny simple part be out of stock for this long? Don't they need this part to build new systems that people order every day?

I realize this does not help you at all, but it still boggles my mind that these VRM heat sinks are not standard on all R10 configurations and instead are only standard on the liquid cooled systems.

I will never be able to wrap my head around that decision.

I am trying to purchase them, using the support tchat, they gave me an email address to contact in UK, it was the wrong one, but they transfered me to the right one, and i am still waiting. it has been a week now.

@Vanadiel cost cutting, a.k.a. "they cheaped out". Same reason why they put a ridiculously small CPU heatsink on my i9-10900F, and the cheapest NVME money can buy. Not to mention that my PC didn't have a VRM heatsink either. They only save 2-3 $ by not adding the heatsink, but when you multiply that by tens of thousands of computers, the number looked good on someone's price forecasts and they decided to go for it. 

As a consumer, I would have gladly paid $5 extra for my $2000 machine to get the heatsink, as well as gladly paid $20-30 extra to get a proper CPU tower cooler. (on my G5 there's room for a tower cooler, so I'm not forced into watercooling, as you guys are on the Aurora because of space)

 "on my G5 there's room for a tower cooler, so I'm not forced into watercooling, as you guys are on the Aurora because of space"

Yeah but aren't you stuck with a nonstandard 500w max psu (g5 5000, 10th gen) for that 10900 and whichever gpu you got.