7900gt: http://www.overclockers.co.uk/acatalog/7900_Series.html (top one)
-or-
X1900 XT 512MB: http://www.overclockers.co.uk/acatalog/X1900_Series.html (third one down, only 199£)
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X1900 XT 512MB: http://www.overclockers.co.uk/acatalog/X1900_Series.html (third one down, only 199£)