AMD X2 240 Amd X2 240 vs Amd Sempron 145 to find out which is the fastest using Octane, Nuclearus Multicore, Sunspider. Amd X2 240 is 2.8Ghz and Amd Sempron 145 is 2.8Ghz. Amd X2 240 is Regor and Amd Sempron 145 is Regor. Amd X2 240 is Dual Core and Amd Sempron 145 is Single Core."