is this a decent overclock for the 670?

[tornadog]

MSI N670 PE
AB settings, Power 114%,Core+75,Memory +600, fan on auto

ran Heaven at max settings(1920x1080,tessellation: extreme, AF 16X, AA 8X):
Score 1295, max core:1263, max mem: 1700, max temp:70 degrees

3DMark 11: P9851

can I use this 24/7?

 

[The_Golden_Man]

That's a pretty normal overclock for these cards. Should be able to use it 24/7 as long as it's stable, you should be fine,