Here is a review of
KingMax PC150 TinyBGA.
They ran some interesting tests and posted some results.
And here is
KingMax's Website.
PC150 :
PC150-332 Specification
Maximum Operating Frequency = 150MHz
CAS Latency = 3
RAS to CAS Delay = 3
Precharge Delay = 2
Device Cycle Time = 6.6ns
Clock Access Time = 4.5ns
On-Board Serial Presence Detect (SPD)
Low Profile - 1 inch high (2.54cm)
JEDEC PC-133 SDRAM DIMM Compatible
Like I said there babies can fly
...(without the high Mushkin price tag)