Sapphire has been very generious in their sponsorship our our LAN. We are excited to give their prizes away this August. Be sure to post up on their facebook and on this post to show them how much we appreciate their support!!
its an improvement over his last card. Just going off a few numbers we have on past reviews with 3dmark vantage I have a 8800 GTS G92(a faster card than the 8800 GT you mentioned) getting 5442 points and the HD6670 with 6937. Its not an amazing performing card but it will play just about anything as long as you avoid high settings.
I'm not sure I trust 3dmark in this case. They might be taking new features into account that a game doesn't care about. I have a 5670 that I tested against a 8800gt. The 8800gt was on par with the 5670 in all games. The 6670 is a bit faster that the 5670...775mhz vs 800mhz, 400 vs 480 shaders, but I don't think this enough to make a huge difference. Also, There's no way a dx11 game will be playable on high settings. Turning the settings down to medium turns off the features that differentiates the two cards. What good is it to have features when you can't use them.
I agree to a point but the same can be said depending on the game you pick to compare the two. Ether way a post thanking a sponsor for sending out an amazing amount of prizes for the LAN may not be the best place for this conversation.
It just sucks that AMD and Nvida have to saturate the market with so many different chips that no one can tell if they're getting better performance from a new card than from one that came out 4 years ago.