Can you use 2 different types of RAM in your computer if you have extra slots.?
150073
No, the motherboard can only handle 1 type of RAM.  Look up your motherboard model number to see how much and what type of RAM it takes.
941251
http://computer.howstuffworks.com/question175.htm\nhttp://computer.howstuffworks.com/ram.htm
837979
yes it is ok to put those ram in. it just give a bit more ram to ur comp
444551
can pick up more ram at best buy, compusa,frys,etc.. most will support up to 1-2 gigs of ram.
912711
a few systems will not allow you to use faster RAM\nalso ram will only operate at the slowest of Ram or BUSS speed
540696
You need to leave more information.  What computer do you have, what motherboard....\n\nHow many slots in total do you have?\n\nIf you have 4 slots, then the chances are you need to insert 2 RAM modules at the same time.  Not a definite, as will need more info on your computer,  but thats probably likely. You could buy 2 sticks on 1GB, and insert them into the currently filled slots, and put the 2 512Mb in the other slots (if you have 4 slots)  That way you will have 3Gb RAM, should run quite will with that!!!
849380
Sorry,the answer is no.DDR has 184 pins and DDR2 has 240.Unless your motherboard has slots that accept both then the answer is yes.
70600
Yes of course!  You can install different RAM modules for as long as the have the same model (or speed or timing) to be safe always use the same brand - for example you can use varying capacities of PC2700 DDR and have them installed on your machine.  Your system will simply add them up together...
1066404
Yes, the wrong configurations of chips on a ram module can have power requirement that don't match your motherboard. There are multiple versions of the ram module,for example, pc3000 ddr ram. They have different chip configurations on the module. Some of those configurations are considered to be really cheap quality or performance. \n\nAs long as you get ram with a configuration of chips that the motherboard supports, there will never be a problem. \n\nA good tip:If you manually set the speed of your ram in the bios, you will have less problems with computer gliches. Motherboards are really bad at setting the speed automatically.
879074
you know the sname of ur laptop go to there website there should be some histrory on ur type of laptop should tell you what the maximum of ram can go into it
721933
Bogus dude has it right.  Use crucial.com to find out how many RAM banks you have.  Then as a suggestion, use their part numbers then go to newegg and order those part numbers from them.  You can buy ram anywhere so...\n\nOn a secondary note, you could try to match your RAM, you mention you are running 128 of pc2100 and 256 of pc2700.  It would be best if you ran the same types of ram in all your banks.  They even have matching ram sets that run at double data rate.  Currently your ram is dumbing itself down to pc2100 speeds.
999927
Agreed..... check out the crucial web site and find out exactly what kind of RAM your computer will support.  But even if it says you can use the two sticks you already have, you could have some other compatibility issues.\n\nThe 512MB may be 333MHz instead of 266Mhz like the 256 stick.  Even if you could run them together, the different frequencies could be a problem.  Your computer might run at the slower frequency (if, in fact, the 512 has a different frequency, is  it also backwards compatibile.  Meaning, will it actually work at a slower frequency.)\n\nThe second issue is whether or not your computer will accept two different RAMs or do they have to be the same (in pairs.)  If the computer will accept different RAMs, make sure to check if they need to be installed in any particular order.  Some computers require that the largest stick be placed in slot # 1, the next largest in slot # 2, etc.\n\nAnd finally,find out if your new computer's warranty will remain in effect if you choose to deviate from the manufacturer's specs.  Nothing worse than spending big bucks on a computer, violating specs, needing repairs, and spending more on the repairs than you did on the whole computer because you trashed your warranty trying to save a few bucks.
789590
.\nAt the site Crucial.com \nthey have a cool tool that will tell you \nexactly the kind of RAM you need for your system and how much you can add.\nIt's free...\nthey hope you will buy your ram from them...and I do recommend their product.\n\nk.
944603
No you cannot. SD ram has 2 notch and while DDR has 1 notch.\nso you cannot put 1 notch ram(DDR) in 2 notch ram slot (SD)
707711
You're going to have to open it up to put the new RAM inside so why not?\n\nAnyhow your computer supports DDR PC3200 or PC2700 with a max of 1GB per stick. Your computer supports 2GB ram total.
32383
You can, but you are limiting the performance.  Make sure they are both the same type and they work in the same frequency(PC2700, PC3200 etc)\n\nBattery Wizard
428860
Did it work before you put more ram in? Are you sure the kind of ram you got is the same kind that was already in there?