5870 & 5830 worth it ?

[chaotic_uk]

got 2x 5830's in crossfire atm but would it be worth replacing one with a 5870 ? , or sell both and just get a 5870 ? . one thing i do not like about running crossfired 5830's is temp of my case now , it has gone up 10c cause the heatsinks do not vent the hot air out the back of the case

 

[TaKeN]

IIRC the card will run at 5830 speeds. So it would be pointless,

 

[chaotic_uk]

but would running just one 5870 give better min fps than the 5830's ? , and not true as both my 5830's run at differant speeds (825/1050 & 800/1000) according to gpu-z when at full load