QUOTE(bobbykatoi @ Mar 6 2010, 11:07 AM)
not very big differences...
but seem ati5870 is beter than 285m in certain games..
well i think i will choose ati 5870 for my np8690..
but one question..
if i order np8690 without hdd and put my own hdd,is it will void my warranty cause i open the back cover?

haha hope u can swap it bro..

Nah, it doesn't void your warranty in any way if you open the back cover. Besides, you most probably would need to re-do the thermal paste. I took a look at mine and the paste was basically, a very bad job. They put in too much. I read that many recommend the AS5 as a replacement thermal paste although Shin-Etsu X23-7783D is far better but that paste costs a bomb. Right now, I'm waiting to see if I can swap the cards and only then I'd re-do the thermal paste.
Right now, I'm doubtful of being able to swap it. I even contacted SagerNotebook.com and even they said I need to purchase the HD5870m. The disadvantages of purchasing from a reseller and also for living in MY. We don't get that many good deals, although Mucro's prices are already very cheap. Hopefully, something would work out and they'll accept a trade-in. I don't mind if I have to send back my system to them. I'll gladly pay for the shipping if it means getting the new card for free or something.
Update:
There's no chance for me to swap the cards, even though I pay for the difference in price between the cards and for shipment. Oh well.
This post has been edited by SonicSpyro: Mar 6 2010, 03:24 PM