Hello, thank you for visiting our forum.
Well, if you want to get your bland-new graphic card, you had better visit Osaka.
Osaka is close to Kyoto, and you'll get there about one hour by train.
And I advise you to go to the place called "Nipponbashi". Because there are so many electrical shops in Nipponbashi and we can get PC parts there cheaper than others, of course you can find duty -free shops there, too!
Sofmap is one of big and famous PC stores here. I think they have abundant stocks about PC stuffs. So you will be able to buy what you are looking for easily there.
Visit their website :
http://tenpo.sofmap.com/tenpo/shop/osaka_1.htm
And if you want to know anything about Japan, the website below could help you.....
http://gojapan.about.com/od/attracti...ka/index_a.htm
Good luck!