The Celeron 420 was compared with E2140 at stock clocks. To see the number that comes up with a full-out overclock of the Celeron 420. The test will clear how does a single core does against the ones having dual core. Following are hardware used for testing:

• Intel Celeron 420

• EVGA 680i LT SLI

• HD 2600 Pro

• OCZ GamerXtreme 700 W PSU

• Windows Vista

• Intel Pentium E2140

• 2 GB Crucial Ballistix