rv516 = x1550

It is just like RV515 (X1300), but fabbed in UMC.
http://www.dailytech.com/The+Real+Details+of+ … article1621.htm

"took me a while to figure out what they were"
"have no recognisable markings apart from one that seems to have been dismantled"

You must not be around OEM parts much - that's an easily recognizable Dell P/N sticker on the outer edge of the card.

Squinting at it, I get Dell P/N something-0TM184-something-something

As learned a while back, drop that first 0 for even more results.

Dell TM184 | 0TM184 = https://www.google.com/search?num=100&s ... tm184+dell

I would've easily identified these as Dell OEM cards because Dell loved using that DMS-59 port. That, and the "REV. A00" and "DP/N" stickers on the cards are a dead giveaway.

Sutekh94 wrote:

I would've easily identified these as Dell OEM cards because Dell loved using that DMS-59 port. That, and the "REV. A00" and "DP/N" stickers on the cards are a dead giveaway.

Yeah that too 🤣

I hate DMS-59 because it seems like I always find cards that use it but not cables, and they are never mid or high end cards, but THE bottom tier that shipped with an OEM.

ODwilly wrote:

I hate DMS-59 because it seems like I always find cards that use it but not cables, and they are never mid or high end cards, but THE bottom tier that shipped with an OEM.

Usually these cards were stuffed into little SFF boxes that had to drive more than one monitor, so they had to be low power, cool running, etc and also have a connector setup that would fit into a half-height. Hence, bottom-tier GPUs with DMS59. At least DMS59 is somewhat standardized and fairly common - they've implemented less common connectors in the past (I have some Radeon VEs that use a Molex connector that looks like a hybrid between DVI and DMS59, for example).

ODwilly wrote:

I hate DMS-59 because it seems like I always find cards that use it but not cables, and they are never mid or high end cards, but THE bottom tier that shipped with an OEM.

Honestly, the real problem with DMS-59 is that the dual-monitor adapters that have to hang off these cards are so heavy that they don't really stay secured. The screws on the connector barely help-- one bump and these things get loose enough to lose picture. I absolutely despise having to deal with these because of that.