The system you specced will run better- you'll always get better value building your own.
Instead of the X3 though, the X4 630 has an extra core and is only 0.3GHz slower (which a modest overclock will easily make up), so an extra £11 goes a fair way if you can stretch it.
That said, it's possible you can unlock the 4th core in the X3 with the right motherboard- it's actually a 4-core with one disabled.
Instead of the X3 though, the X4 630 has an extra core and is only 0.3GHz slower (which a modest overclock will easily make up), so an extra £11 goes a fair way if you can stretch it.
That said, it's possible you can unlock the 4th core in the X3 with the right motherboard- it's actually a 4-core with one disabled.