ReadyBoost Memory Tradeoff, CPU v/s HD Access Speed

[brosen]

I was doing today some test with my 4GB SD Flash Card configured as ReadyBoost Drive, and EVERY TIME the SD Card was accessed the CPU goes up to 70% or 80%, so you might get faster access to the HD data (even though I do have 7200 RPM disks) but the tradeoff is CPU usage (battery usage) and a MUCH warmer laptop, with ReadyBoost the Temperature never goes below 60C, without it will be around 55C, any experience ?, comments, thanks

[brosen]

Maybe an option could be to use a CF Card as ReadyBoost ????, I do not have one, maybe somebody can try it ?, thanks

[tomh009]

Is this with the built-in SD card reader? X60 or X61? The higher CPU utilization seems to be a characteristic of the built-in SD (X6x) and CF (X3x) readers -- and that would definitely mean more heat as well.

Take a look at this recent discussion as well:

http://forum.thinkpads.com/viewtopic.php?t=43973

[brosen]

Is this with the built-in SD card reader? X60 or X61? The higher CPU utilization seems to be a characteristic of the built-in SD (X6x) and CF (X3x) readers -- and that would definitely mean more heat as well.

Take a look at this recent discussion as well:

http://forum.thinkpads.com/viewtopic.php?t=43973

Yes, is the BUILT-IN Reader, for SD and CF, I've checked both and the CPU utilization is VERY HIGH, not convenient at all, I think it is better to install more RAM.

[brosen]

After many test, it is 100% confirmed, both internal SD/PCMCIA slots are VERY SLOW and they will consume a lot of CPU, so it is not good at all to use them for Readyboost. It is much better to use a USB drive or the SD/CF card with a USB adaptor.