So does the 4GB of SSD make that much of a difference? To me it sounds like 4 GBs isn't that big, but maybe I'm not understanding how it all works. I mean, I play a lot of BF3, would this actually load BF3 faster or is BF3 just too big to really get any benefit from the SSD partition?
4GB is a lot of space if the space is used in a smart dyanmic fashion.
A fresh windows 7 install is approximately 6 GB for 32bit and about 8 GB for 64bit. When I say fresh I am not counting the page file, hibernation, system restore, or any updates. The files you are going to access
a lot on a computer are going to be a fraction of those 8 GBs so having 4 of them on SSD helps out tremendously on speed. (Now if you use Battlefield 3 files more often than those windows files the hybrid drive will automatically reallocate the space.) SSDs are over a magnitude faster than any hard drive in the order of latency.
Getting a 4 GB smart ssd like a hybrid drive definately improves speed (when I say smart I am saying a drive that automatically determines what to cache). That said getting a 40 GB or bigger "dumb" SSD is even more benefical since you can have everything available for fast writes and reads (with very little latency).
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You should never go less than 40 GB on a dumb ssd with windows 7 and here is why.
A fresh Windows 7 64bit takes up about 8 GB. That said Windows Updates stores a lot of files in a dumping place called the WinSys folder NEVER EVER delete this folder for it will cause problems if your software wants to update itself or if you want to remove something. So while windows 7 may only take 8 gbs, all your updates you ever download is going to stay put in your winsys folder. The WinSys folder can get huge, I am talking like 10 to 15 GB by itself (my current winsys is 11.6 GB).
You should never disable your pagefile (though it is safe to make it something like 1 to 4 GB). Windows normally makes your page file double the size of ram.
If you do not disable hibernate, that is going to take up even more space.
Start adding things like program files and you got another 6 to 12 GB (when I say program files I am not including games, if you have big program files like photoshop you may want to figure out how much space these take by itself and add that to the 40 number.)
8 (64bit win7 )+15 (winsys)+4 (pagefile)+10ish (programs) is about 37 GB. If you make the page file 1 GB then you are about 36 GB or so. Giving you the number that is within 10% of 40 GB.
My 40GB Intel-V has been running great on my htpc (which is 64bit not 32bit). I have also run a 64GB indinnix drive (desktop), a 128 Sandforce (1st gen SSD) in my netbook, and I am currently replacing my current desktop with a newer better one and it has a 120gb Intel 310. I haven't yet had to "prune" my Intel-V drive, but if it was a 32GB I would have filled it up completely a long time ago.