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Technology Stocks : WDC/Sandisk Corporation -- Ignore unavailable to you. Want to Upgrade?

To: slacker711 who wrote (32500)	6/14/2006 2:00:27 AM
From: Bruno Cipolla	Respond to of 60323

excerpted from blogs.msdn.com readyboost: usb flash as a disk cache for "small" random IOs FAq from the MS product manager --------------- Q: Ok... 256M-4GB is a pretty big range... any recommendations? A: Yes. We recommend a 1:1 ratio of flash to system memory at the low end and as high as 2.5:1 flash to system memory. Higher than that and you won't see much benefit. ----------- Q: Won't this wear out the drive? A: Nope. We're aware of the lifecycle issues with flash drives and are smart about how and when we do our writes to the device. Our research shows that we will get at least 10+ years out of flash devices that we support. --------- Q: Do you support SD/CF/memory stick/MMC/etc.? A: Mostly. In beta2, we added support for a small number of SD/CF cards on internal USB2 & PCIe busses. RC1 has a much broader support range. ------- Q: How much of a speed increase are we talking about? A: Well, that depends. On average, a RANDOM 4K read from flash is about 10x faster than from HDD. Now, how does that translate to end-user perf? Under memory pressure and heavy disk activity, the system is much more responsive; on a 4GB machine with few applications running, the ReadyBoost effect is much less noticeable.