Hey Random -you are right on most points except that firstly its not like the regular vanilla card -difference is the ram modules, they are faster also as such they allow you to push the card much harder in overclocking . Here check this review
http://www.firingsquad.com/hw/7079/eVGA_GeForce_8800_GTS_Superclocked_ 320MB_GDDR3/
Superclocked clock speeds: As its name implies, EVGA overclocks their e-GeForce 8800 GTS Superclocked board from the factory for added performance. Not only are the graphics core and memory overclocked, the stream processors are as well. EVGA clocks them at 1.35GHz, the same speed as the GeForce 8800 GTX, while the graphics core runs at 575MHz, which is also the same speed as the GTX. Meanwhile, the board%u2019s memory runs at 850MHz, this is 50MHz higher than the stock GeForce 8800 GTS.
Because of these changes, EVGA%u2019s e-GeForce 8800 GTS Superclocked outperforms the stock GeForce 8800 GTS 640MB, despite having half the onboard memory.
So as you an see they can be pushed real hard . They are after all super clocker huahahahaha ..hehe. i own one it is wicked