I dont think this will be an issue to anyone who doesnt have a really shitty computer. If you do then the best you could do is buy a newer one because there will be more than diablo3 that you will be missing out on.
Theres been numerous reports of peope having difficulty playing the beta even with high-end computers..
I myself have had alot of slowdowns, epsecially with 4 players at the pillars of the SK... or the stairs after jondar... and i got an Core i7 920, with gtx 560 ti mega OC + 6 gb ram and a good hdd... so I dunno..
It's not always the hardwares fault that the game runs faulty
The weird thing I had with the beta was the first 10minutes of playing were always a little choppy, like everytime I cast a spell for the first time I have a very small freeze (like 0.3 second) and then every other cast are fine, same for monster death. Just as if the game had to reload in the RAM every effect while playing instead of preloading it during the loading screen...
It may be an HDD issue (RAM is very good) as they are getting a old (5yr hdd) and a SSD would probably help but really its a minor annoyance since it only concern the first 5-10min of playing and this is the only game that has this behavior. Hope this is fixed in the release build.
Yeah, because defrag does such a major change on todays harddrives. It was important back when everyone used IDE since the read/write speed were shit on those. So unless you're majorly dumb and using a 1TB SATA HDD without any partition there's really no point, surely it might make a difference - but that difference is minor.
You still have time to fresh install Windows 7 (or MacOS ... really ? haha... hm).
Still the best way, if you have 2 or more partitions/HDD, it's AT LEAST 1000 TIMES BETTER than defragmenting and you dont have to backup anything (or really little data).
For Win7/Vista and XP users - run MSCONFIG from your run prompt in the Start menu, hit the STARTUP tab, then uncheck boxes for processes that don't need to be running on your machine. Like Adobe Gamma, Adobe update manager, Google Updater, Itunes, Quicktime, MSN Messenger, Yahoo Toolbar, Yahoo Msger, Smart Defrag, etc - Basically look for anything that doesn't pertain to your system's components. Click Apply/OK, restart your computer. It will come up with a message box right after reboot stating that changes have been made..blah blah..just click the 'don't show this message again' box and hit OK.
This can help your system be a little more peppy because it has less processes to handle and manage.