PCShopTalk posted a review on the Gainward GTS250 512MB GDDR3 Deep Green Video Card
A quote from the article:
>> Gainward GTS250 512MB GDDR3 Deep Green Video Card Review
Waiting for the long delayed new Fermi generation to come out, many manufacturers started to develop different card configurations with the chips that were currently on the market like G210, GT240, 9800GT, GTS250. Gainward have released a new type of cards named "Deep Green", which do have lower clocks than the stock specifications from Nvidia and consume less power. These do not have a SLI hardware connector, but do support software SLI.
>> Gainward GTS250 512MB GDDR3 Deep Green Video Card Review