1. Yours is the Brisbane too.. its just yours is just a 4000+ Brisbane thats just overclocked 200mhz more.. nothing really..
2. 350w isn't something you should look at, go check the specs of the Amperage on the 12v Rails, if you look at it, the Thermaltake has less than the Silverstone, and the Silverstone 350w would be better with an 8 series card actually because of it