Advantages of an SSD

The boot process is not pure, 100%, storage I/O it can only speed up the parts that are.

You're asking for an Apples to Oranges comparison in a completely uncontrolled test.

If you use sleep mode then the contents of the Operating System Disk Cache will remain intact upon resuming your system - it will also use less power than a full reboot in most cases.

If you had been using it earlier that night and have/had ample free* memory thus enabling the OS to get (near) a 100% cache hit ratio instead of having to read it from the physical media then yes you had Photoshop cached.

Task Manager, Performance tab, will show that all (or very close to it) available memory will be used as for the storage subsystem cache. The only exception to this is if not enough disk I/O has occured.

ie: Having 1962MB available memory and only having had 1074MB of cached disk reads/writes since boot up. (Some software explicitly uses uncached I/O as it does not want to affect the cache hit ratio of what is already in the cache, for example CoD4 does this on it's initial load.) [This kind of implies that the Disk Cache has grown to at least 888 MB, the difference between the two figures].

Available memory includes both the disk cache and free memory, as the OS can dynamically shrink to the point of almost not existing. When this happens your cache hit ratio drops to nearly 0% as both reads and write-back caching are negatively impacted.

Free memory is memory that has not been allocated previously, not even by the disk cache. This is often due to not enough disk I/O occuring for the cache to dynamically grow to a size large enough to require all free memory.

There will usually be a 8MB to 64MB discrepency between the totals of Free plus Cached = Available as the Operating System will generally not shrink the disk cache to below 8MB to 64MB in size as doing so would hurt performance more than having to perform swapping of pages in physical memory to and/or from the swapfile(s). (It depends on the cache hit ratio for reads in the last X seconds, the write-back cache benefit, if the storage supports synchronous transfers and so on).

I hope this explanation has been clear and helpful!


I really wouldn't worry about it too much unless you're performing consolidating of Virtual Machines.

Photoshop will probably load faster the 2nd time you start it because Windows will have cached the relevant files in memory. Try it after a fresh reboot and see how fast it loads.

I've made a video comparing the time to boot Windows and start Firefox and a couple of monitoring programs on a hard drive vs. an SSD. You can see it here: http://www.youtube.com/watch?v=cTHX0MqVMss

All apps open faster the 2nd time, unless windows needed the memory for something else.

I have looked a lot of SSD reviews. Here's one that includes the 600G VelociRaptor: Mushkin Callisto Deluxe 120GB Solid State Drive.

Why are you looking at an old review of an old SSD? The Vertex 2 (and Agility 2) are much faster than the original Vertex drive.

Try this with your WD black, This is the best visual comparison to see the difference.

http://www.youtube.com/watch?v=T_Jz7IMwBt4

Obviously your photoshop was cached, since you had it opened already.

Cause its in my price range.


Also, after re-booting, I opened Photoshop in 6 seconds. Still not seeing much to be desired.

To daship, thats impressive, but when would I use that?

Obviously, the difference between 4 and 6 seconds isn't going to be that noticeable. For basic desktop use and gaming, an SSD isn't going to make a big difference.

SSDs are more reliable as there are no moving parts, take less power, and create less heat.