Waste of time or another small tweak worth the two seconds it takes to do? Readyboost

My system
i5 @ 3.33Ghz
gtx460se 1gb (yeh yeh)
4gb ram
win7 32

Windows experience index performance was 5.9 for disk data transfer rate,everything else is 7.0 and 7.1 for Ram.

ReadyBoost provides the most significant performance improvement under the following circumstances:

* The computer has a slow hard disk drive. Computers with a primary hard disk Windows Experience Index (WEI) subscore lower than 4.0 will see the most significant improvements.
* The flash storage provides fast, random, non-sequential reads. Sequential read speed is less important.
* The flash storage is connected by a fast bus. Typically, USB memory card readers are not sufficiently fast. However, connecting flash memory to an internal memory card reader might provide sufficient performance.

Computers with fast hard disks (such as 7,200- or 10,000-RPM disks) might realize minimal performance gains because of the already high disk I/O. ReadyBoost will read files from the cache only when doing so will improve performance. Hard disks outperform flash drives during sequential reads, but flash drives are faster during non-sequential reads (because of the latency caused when the drive head must move to a different disk sector).Therefore, ReadyBoost reads from the cache only for non-sequential reads.

whats the general consensus on rerady boost?

It's not worth it for most people. It doesn't replace using hard drives for page files, it acts as a cache.
It also wouldn't be worth much if you don't get a fast, good performing flash drive. There is a wide range of speeds with these things. I know OCZ makes some of the better ones, I've got one a few years old that's still good (Patrior IIRC). I saw that it's still sold on Tiger Direct but with about 8 times the space. LOL