Specs from boxes directly:
World of Warcraft 1.0:
Windows98/ME/2000/XP PIII 800+ 256MB, 32 meg video card 4 gig hard drive space 4x CD and dialup
Mac 10.3.5 933+ G4, 512MB, 32MB video card (64 recommended) 4GB hd space
World of Warcrft 2.0/Crusade: 2000/XP (no more 98/ME) 800+ PIII 512MB. 32MG video, DirectX9c 10GB hd space, broadband connection
Mac 10.3.9933+ G4 or G5, 512 MB, 1GB recommended, 32mb video 64 rec, 10GB hd space
World of Warcraft 3.0 / Wrath of the Lich King:
XP (SP3)/Vista 512MB (1 GB for OSX/Vista) 2 GB rec, 15GB hd space, 4xDVD, 64 MB, rec 128MB video card, under Vista 1.3 GhZ CPU rec.
They're gonna have to work within the 3GB memory limit for a while, a lot of machines made in last 3 years max out at 4GB ram, especially as XP only reads 3GB of memory.
OSX 10.4.1
Chat with our AI personalities
512MB of GDDR3 RAM
Typically, Minecraft usually uses 300MB + RAM - Usually about 600MB, but it is automatically allocated up to 900MB RAM (if your computer can handle that). Basically, the more RAM you have, the better Minecraft will run.
256mb system (XDR) and 256mb video (GDDR3)
Depending on which version of Windows, or Mac you use it can be between 1 and 2 GB of RAM needed For Windows 7 it is usually 1 GB of RAM, and if you use Mac then you will need 2 GB
Depends on how much RAM you have if you have a good amount 6 gigabytes or more is pretty good for minecraft than you can search how to dedicate ram to minecraft. Or just watch this video...