There has been some confusion about readyboost, so I decided to research it.
First of all, I can tell you right now that readyboost doesn't affect your memory in any way, it simply acts as a method of increasing the cache of hard drives.
All hard drives have a cache that is 64MB or lower. Obviously, the bigger the cache, the faster you can load commonly used programs/files. Readyboost uses a USB drive as a way to increase the size of your cache dramatically. Say you have a 4GB flash drive and a hard drive with a 32MB cache. If you were to fill the hard drive with the readyboost cache, you would be able to load up to 4GB of files with improved speeds.
I personally decided to try readyboost and I actually noticed a significant difference in speed increase. A defragmented laptop hard drive running at 5400 rpm with an 8MB cache and a 2GB USB 2.0 flash drive. I tested the speed of shadow mission load times for the speed difference.
Without readyboost, I was taking 1 minute just to load the mission.
With readyboost, I was taking around 10 seconds.
Readyboost will only help you if your hard drive is slow, but if you want a memory increase, it'd be best to use the page file optimization guide by Osay. (Keep in mind that it is only virtual memory)
Quote from IceBlade;135737:
No it wouldn't work. Even if you just look at the max read speed of USB 2.0 (60 MB/s) you can see that it wouldn't be effective to be used as ram. But you really should be look at it's speed in practice which around 10-20 MB/s. So no it wouldn't make a good alternative for ram :/ Or even be use full as page memory. Since even IDE hard-drives have 100 MB/s transfer rates with the new SATA drives going up to 3GB/s.
Incorrect, the current standard for SATA drives (SATA II) is 3Gb/s, the latest SATA drives have 6GB/s transfer rates.
Quote from Osayidan;136156:
with USB 2.0 readyboost is totally useless. SATA and even IDE is faster than USB 2.0. Just configure your page file properly. Osayidan.net: Optimizing the Page File
When USB 3.0 is standard, and you get a new computer that has USB 3.0 on the motherboard, ready boost will be a fairly decent solution (we won't even really need hard drives anymore).
USB 3.0 is the standard for custom systems and we won't ever need hard drives soon. Solid state disk prices are going down and capacities are increasing.