Take the tour ×  Minecraft and Terraria both run incredibly slow
on my machine. I've never seen anything like it, javaw.exe
hammers my cpu - it's constantly at 100%. These aren't even
graphically intensive games, they both use java, so I suspect
that to be the reason.  I tried setting low render distance, 3D
anaglyph to off, graphics to fast, but still minecraft became
unplayable.  I uninstalled all previous versions of java and
installed the latest version: jre7. I even tried running
minecraft in very low resolution and it still killed by cpu.
Reinstalling minecraft and java hasn't worked.  I've checked
that nothing else is running, anti-virus autoscan is off.  I've
managed to run hl2, portal, cod4, san andreas and other recent
3D games just fine, so it's very frustrating.  My specs: Pentium
4 2.8GHz 1 GB RAM NVIDIA 5600 64MB Windows XP  share|improve
this question I was going to say this belonged on Superuser, but
their FAQ rules out games... I don't know the solution, but I'll
note that I have Windows XP/S