Kasteo Posted November 29, 2003 Share Posted November 29, 2003 I want to upgrade the memory in my friend's laptop, Compaq Presario 2100. It support 1GB memory max (2x512). I bought a PC2700(DDR333) 512MB from Circuit City. But after I put it in the 2nd slot, it won't boot up. The reason I bought PC2700 stick is it's much cheaper than PC2100, $99 VS $140. I thought you can put higher rate DDR stick in the lower rate DDR slot, but you won't be able to put lower rate stick in the higher rate slot, right? Do you think that I just got the bad stick or you won't be able to put the PC2700 stick in the PC2100 slot? Please help.... Thanks, Link to comment Share on other sites More sharing options...
-=SD=- Posted November 29, 2003 Share Posted November 29, 2003 Unless the ram is incompatible with the laptop or the other stick of ram it should work, have you tried just using that one to see if it will work at all? Link to comment Share on other sites More sharing options...
Circaflex Posted November 29, 2003 Share Posted November 29, 2003 i think it will work, but it will just throttle down to 2100 speeds Link to comment Share on other sites More sharing options...
Kasteo Posted November 29, 2003 Author Share Posted November 29, 2003 I already tired to put just 1 stick of 512MB RAM in, but it's still not working. As far as I know PC2700 is the same as PC2100, but only support higher bandwidth rate. It should work, but now I have no idea why it's not working. Do you think I got the bad stick? Or I won't be able to put PC2700 in PC2100 slot at all? Link to comment Share on other sites More sharing options...
RaWShadow Posted November 29, 2003 Share Posted November 29, 2003 Your best getting memory from who ever makes the laptop. Link to comment Share on other sites More sharing options...
Xer34 Posted November 29, 2003 Share Posted November 29, 2003 Well i remember with my desktop when i had two sticks of 128 in there, it wouldnt detect one of them till i switched the order around.. i still dont know why.. and are you putting in two sticks or something?.. or just one?.. bah.. sorry i cant help more Link to comment Share on other sites More sharing options...
Inertia Posted November 29, 2003 Share Posted November 29, 2003 you can match memory for your laptop at www.crucial.com (or .co.uk) this is what i do when im gettign ram for a lappy Link to comment Share on other sites More sharing options...
Kasteo Posted November 30, 2003 Author Share Posted November 30, 2003 Thank guys, I decided to drive back to circuit city and exchange it to the new stick(the same model). Guess what, it was a bad stick that I've got. Must be my lucky day that I pick 1 out of 10 packs and got the bad stick. Now, it's all working great.... To confirm this, You can put PC2700 stick in the PC2100 slot. It's weird that all PC2100 is more expensive than the faster module, PC2700. Link to comment Share on other sites More sharing options...
-=SD=- Posted November 30, 2003 Share Posted November 30, 2003 Good to see it's working now, yea I said the samething about the price.. At compusa the pc2100 was $20 more than the pc2700. Link to comment Share on other sites More sharing options...
Zip Posted November 30, 2003 Share Posted November 30, 2003 yeah, the most popular ram is cheapest (supply and demand) Link to comment Share on other sites More sharing options...
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