Seems like a predictable outcome. Sparkle is the cheapest brand on newegg, and their card is the crappier of the two varieties. It's the longer card, needs two power connectors, and has a loud heatsink. My Gigabyte 9800GTX+ with factory Zalman cooling is loud like a tornado at full speed, but peaks at something like 54 degrees. Undervolting the fan to 5v makes it inaudible over the PC's regular noise and brings the peak ATITool temp to 74C - roughly the same as the Sparkle's temperature while churning out tornado loudness. It seems like another case of you get what you pay for.
EDIT: OK, the GTS250 is officially one of the craziest re-brands yet. Originally, the GTS250 was supposed to be at least in line with the nvidia reference specs
. The key features being 9.0" long, single 6-pin connector. I just went through NewEgg's pictures and using a simple ruler determined there's no fewer than 3 versions being sold as a "GTS 250":
BFGTech GTS250 = 9.0"
XFX GTS250 = 9.0"
Sparkle GTS250 = 9.5"
evga GTS250 = 9.5"
zotac GTS 250 = 10.5"
I have a feeling only the 9.0" ones are genuinely new cards, the others are just re-labeled 9800GTX+. The evga GTX+ for example was always a 9.5" card with a single 6-pin power connector, so for evga they could simply slap a new sticker on the GTX+, flash it with a new name in BIOS and they're done, so long as nobody cares about the extra half inch. The Zotac is the funniest, since they make their card the least convenient of all, requiring a single 8-pin connector. It's like they get to just make things up as they go along, lol!