My computer specs:

Motherboard: Gigabyte GA-945PL-S3
OS: Microsoft Windows 7 Ultimate
CPU Socket: LGA775
CPU: Intel® Core™2 Duo Processor E4300 (2M Cache, 1.80 GHz, 800 MHz FSB)

After I bought new hard drive (Western Digital 250GB, 7200rpm, 32MB, Sata III, Caviar Blue, WD2500AAKX) I saw that my processor temperature started to raise to higher value then before. Now while surfing internet it goes to 70°C.

Cleaned my motherboard - nothing;
cleaned fan - nothing;
replaced thermal paste - nothing;
replaced thermal paste with care - still nothing.

So I went to friend just to check if he doesn't have any spear fan, and he did. But with fan he had another processor that he didn't need and he wanted to give it to me, but I told him that I will think about this.

So my CPU, he's CPU (Intel® Pentium® D Processor 820 (2M Cache, 2.80 GHz, 800 MHz FSB)).

Question: which proccesor is better for gaming and for recording games?