eVGAs 7800GT's

[DLBlank]

Ive been looking to get a 7800gt and am a bit confused..

At newegg theres this card,
http://www.newegg.com/Product/Product.asp?Item=N82E16814130247
Model number 256-P2-N515-AX

Then theres this one
http://www.newegg.com/Product/Product.asp?Item=N82E16814130238
Model number 256-P2-N518

As far as i can tell there both the same card, Same heatsink same clocks, same specs etc.

Then theres this one
http://www.newegg.com/Product/Product.asp?Item=N82E16814130249
Model number 256-P2-N517-AX and it has a diffrent heatsink, copper i think.

Now this first one(N515) is like $299 or $280 with rebate, Second(N518) Is about $380, And the third one the one with the all metal/copper heatsink is $309 It also has the higher clock speads, So why is N518 so much more? Newegg mistake? eVGA's web site dosent eavn have a N515 listed.

Now on eVGA's site the N518 is listed as $399 Whitch on newegg looks to be marked as N515($280) The N517 Is listed as $449(309 on Newegg)

WTF?

Newegg Mistakes?

 

[slayer202]

i see the 18 comes with an HDTV Adapter where the 17 doesnt. i just bought the 17 though. shipped fassttt