Seagate Momentus XT Hybrid HDD w/ built-in 4GB SSD

This is interesting:
Seagate brewing bizarre Flash/Platter chimera ? The Register

Quote:




A Greek website is reporting that a combined solid state and spinning disk drive may be on the way from Seagate.

The hw box story says the hybrid Momentus XT will combine a 4GB solid state drive (SSD) with a 7200rpm rotating hard disk offering 250, 320 or 500GB of capacity.

There will be a 32MB cache, a 3Gbit/s SATA interface, and native command queuing (NCQ).
The article mentions an 80 per cent performance improvement over a 7200rpm hard drive on a PCMark Vantage test.

Targeted devices for the flash-using Momentus XT are notebooks, workstations and small form-factor desktop PCs.




Thoughts?

I am mostly interested in pricing.
I don't imagine it will be that much more than a regular drive but it will still fetch a premium.