No, that is a 3dmark06 glitch where it uses the default clock multiplier rather than the one used.
In this example the guy states that his cpu is: E8600 Thermalright Ultra-120 @ 589*8 = 4712MHz
Lol, whats pulling you down from his score isn't the cpu but the gfx cards. His are heavily modded with Vgpu mods. He has 2 x ATI HD4850 @ 760MHz / 1075MHz - stock cooler - 1.30v @ load.
760mhz core is huge, compared to stock 625. He needed 1.3v for this on stock cooler!! Very Very hot. I think stock vcore for the hd4850 is around 1.15v.
If you have money to burn go ahead and follow suit and mod your card and clock like hell. Imo i'd go for 2 hd4870 512mb which can be had for £160 now. These 4870 have highe stock core clocks and higher stock gpu vcore. Therefore have more overclocking head room than its little brother 4850.