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ReadyBoost Memory Tradeoff, CPU v/s HD Access Speed
Posted: Sun Jun 10, 2007 9:21 am
by 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
Posted: Sun Jun 10, 2007 9:22 am
by brosen
Maybe an option could be to use a CF Card as ReadyBoost ????, I do not have one, maybe somebody can try it ?, thanks
Posted: Sun Jun 10, 2007 11:17 am
by 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
Posted: Sun Jun 10, 2007 11:26 am
by brosen
tomh009 wrote: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.
Posted: Sun Jun 10, 2007 12:08 pm
by 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.