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Is there a list of what categories of motherboard fall into the "mid grade board" category?

I came in last week and didn't realize it until I looked closer at my invoice sheet, but 7 lbs of the motherboards I brought in got classified as "mid grade board."

None of these had BGA or other components removed, at most, I pulled heatsinks off the northbridges on some of them - is that not recommended?

So if it wasn't the heatsink removal, I'm not sure which kinds of boards went into that category. I thought everything I had was Small socket green P4, large socket, i-series/newer AMD, or 775 metal socket.

I also had my weight estimate at 61lbs for all the motherboards, but final paid weight was 55lbs.

It was my first time so I did have some sorting issues, but it seemed like it was just a handful of ones that were quickly fixed by the sorter.

What’s done and past is done: but I have a few suggestions.

If your boards all had sockets larger then a nickel in width square; they are motherboards unless these were semi off-loaded partials. Something found with some IBM/Lenovo platforms over the decades, Dell, and ESN boards from HP.
Unless you had the previous stated manufacturers id email or call Chris with your order number to see what he says about your intake.
Keep in mind; what I always mention on such issues, there are *always* exceptions in scrap.

If you come across such boards again (or have a previous photo) email me directly a photo and I’ll take a look for you.

And finally i reiterate the first paragraph. The first rule of recycling is kind of like non-UFC cage fighting and death match wrestling— there are no rules. I’ve seen otherwise compliant actual full motherboards with no sockets or bridge chips, and 16 PCIE and MBC card slots that put the processing on bridge cards. Generally high peripheral.
I’ve seen motherboards that qualified as high telco.
And yes, beyond the mentioned, I’ve seen motherboards that didn’t even make midgrade.

Ultimately the “rules” are generalisations. An ITS data master motherboard would go as high telco despite being an embedded mobo~having more gold than a pentium pro but requiring more processing in recovery than a tube tv main board.
And I’ve seen ESN boards over valued at low grade.

I hope that answers the question even though it doesn’t help (and wasn’t supposed to).

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Thanks for the tips, I appreciate it.

These were all desktop PC boards, so like I said, I was trying to figure out if there was some category of those that falls into mid grade rather than the categories I thought they were in.

From what I can ascertain from my notes on the boxes I brought, half the weight of my "small socket P4" boards and all of the weight of what I had classified as "large socket" are what must've ended up in the midgrade category. Unfortunately I didn't think to take pics of what I had

Just for reference, does boardsort prefer aluminum heatsinks be removed from boards, or do they not care about that?