The memory market has many markets
The past few weeks is more of an idication of the growing changes in the computer memory market. eTT chips are their own market. Used for mostly low cost upgrade solutions and made with x8 chips, these are always under pressure as the Taiwanese DRAM makers over produce and have zero access to the tier one computer companies demands. Mostly used in China and remarked with major brand names and house brands.
Original factory UDIMM and SODIMM markets are changing with the times. Desktops are on the decrease in demand while notebooks and mobile computers are driving the market place.
Registered and FBDIMM too have an entire market structure. This market has gone up recently while the tougher to procure x4 chips have remained the manufacturers last stand in the dumping wars. eTT and uTT components do not cloud this market and again black top or OEM marked 4gb FBDIMMs are not exactly what HP is using these days.
Niches exist across the board in regards to specification and brands. Each market within this one memory module market is going its own direction and has its own unique demands.