I bought a new RAM 512(200Mhz). The existing RAM 256(166Mhz)currently in my notebook. Question is, will this two combination of RAMs compitable running together? Which speed of RAM will the computer choose to best suit its performance?
127414
I don't believe they will work together at all. You most likely purchased the wrong memory type. Try calling up your computer manufacturer and ask what type of memory you need to get. I know my computer uses DDR2 PC2-4200 SDRAM, but there are dozens or even hundreds of diffent types.
54353
If you want to install RAM into your computer more is better. RAM chips are available in sizes up to 2GB. Size is only one feature of RAM though. Next is RAM speed. RAM that comes in the same size comes in a variety of speeds. RAM speeds are based on MHz. The higher the MHz the faster the RAM. You should also know that if you install two RAM chips on your PC that are of different speeds the computer will run both RAM chips at the speed of the slower chip. \n\nOther considerations are new RAM technologies. There are three types of RAM chips. SDR SDRAM (Single Data Rate Synchronized Data Random Access Memory - Slow RAM), DDR SDRAM (Double Data Rate Synchronized Data Random Access Memory - Medium Speed RAM), and DDR2 SDRAM (Double Data Rate 2 Synchronized Data Rate Ram - High Speed RAM). Dual Channel RAM is also available. Dual Channel RAM is better than non-dual channel RAM however I don't know much about it except that it only works with two exactly identical dual channel RAM chips.\n\nThe big mistake everyone makes when purchasing RAM is not checking the compatibility of the RAM with their motherboard. Certain motherboards can only handle certain types of RAM. Find out what type of motherboard you have then find out how much and how fast the RAM is that it can handle and buy the best you can install on it. Contact the manufacturer of the motherboard you have for such information.\n\nPS: Please select my answer as the best answer. Thank You.
130581
Yes, you can upgrade your memory and if it's only 512MB I'd recommend you do. 512MB is okay for now but if you want your laptop to work fine for the long run, upgrade to 1GB or maybe even 2GB. Just check to see if the RAM cards are compatible with your laptop beforehand.
200386
The differences between these memory chips are speed, types, and compatibility.  In addition to the DDR (double data rate), there is also speed, usually follow by DDR3200 or DDR4200.  The higher the number, the higher the speed.  You should check what is the maximum the memory the laptop can take. Most laptops only allow memory upgrade up to 2 Gigs.
367418
The first one is faster than the second one.  533Mhz > 400Mhz.  I would trust crucial.com.  Although both will work for your system.\n\nAlso, buying from a major brand is always better than buying generic.  The memory will perform much better.\n\nAlso again, if I were you, I would look into getting a 512mb stick of RAM instead of the 256mb.  That would give you a grand total of 1024mb or 1gb of ram, which is what I would recommend to take full advantage of that system.\n\nGive this a try . . . http://www.newegg.com/Product/Product.asp?Item=N82E16820231038\n\nAnd to the answer above, yes SODIMM has a 200 pin version.  http://en.wikipedia.org/wiki/Sodimm
408730
yes it is quite ok to use ddr on ur am2, but ddr2 1066 mhz rams now available, why wait.? lol
91666
I don't know u r so complicated this thing.\nRAM Defines By Its Capacity.Not Speed At All\nIt is a Temporary Memory.\nThe System To Be Speed We Need Optimum RAM Capacity.\n\nIn the Case Of CPU Is A Engine That Should Be Speed,\nThe Speedy CPU Will work fine with high capacity RAM\nHave u got it
469990
OK Does the computer work with the old RAM stick in? On the RAM slot, have you made sure the chip is pressed in firmly and that the 2 clips on the end have locked on? If yes, have you put it in the right way round? (usually impossible to do but hey, been there myself before lol). If you have more than one slot, try putting in both RAM sticks together and on the power up does computer count up the memory test and has it increased?
500300
a few systems will not allow you to use faster RAM\nalso ram will only operate at the slowest of Ram or BUSS speed
17564
The numeral portion of DDR memory represents the "MB/s" of the RAM, so PC2700 is rated at 2.7GB/s (2700MB/s) and so forth. However, when configuring your RAM the names of the memory are actually related to their speeds as follows:\n\nPC2100: 266Mhz\nPC2700: 333Mhz\nPC3200: 400Mhz\nPC3500: 433Mhz\nPC3700: 466Mhz\nPC4000: 500Mhz\nPC4200: 533Mhz\n\nNote that many of these RAMs are NOT officially recognized by standards committees because technically anything above DDR400 speeds are not officially supported by chipsets.\n\nMost of the really high speed RAM such as 433Mhz and above (PC3500 and above) go beyond standard specs and are useful for FSB overclocking above 200Mhz.
618531
well ram is not always everything, the CPU clock seed matters the most.  If it is low, then more ram is not going to do anyhtring,  ram is more for making more resources for you computer so you can run multiple programs.  I suggest buying a new CPU chip.
285409
Should be OK as long as the new RAM is of the same type as the 512.....meaning if your 512 RAM is unbuffered, you need same unbuffered 1gig...or if it is Registered then the 1 gig has to be Registered also. You can't mix different types or the computer won't boot.
8846
RAM is such a tricky thing. Did u upgrade with a stick of RAM that is by the same manufactuer (also the same specs)?  If not then there can be some conflict between the 2.  Since u took it to the shop for them to install it, I assume u aren't comfortable with removing/installing the RAM yourself?  I ask because u could take out the old RAM and try running the computer with just the new RAM to see if u have the same symptoms.  An option to try w/o opening up your computer would be to run a small memory testing program from a CD that can tell u if your new memory is bad.  Go to http://www.memtest86.com/ dowload, unzip and burn to a CD
278926
Check your computer's specifications...usually found online someplace if you look up the model number and make.  Sometimes it'll tell you what the maximum memory is for your computer.  It doesn't matter what sizes you put in there to make up the numbers as long as (I'm thinking) it's within your max memory.  I seen some older computers only a max of 128RAM....was time to ditch those badboys.  I'm running 512mb right now...two 256 sticks.  Computer runs great even doing videos while running other programs.
663958
Poor RAM\nRAM is directly related to the workrate of the CPU, more RAM would definetely take the load of the CPU.\nGood luck...
448339
pc700 memory modules are not supported by this mobo (850 chip set) and may run at pc600 speed.\nto run dual channel mode, both ram modules have to be of the same size and speed. therefore a 128mb and a 512mb (btw with different speeds) will not work properly.\ntry to run both modules in bank 0 or remove the 128mb module and put the 512mb in bank 0.\n\nhere is the description from Intel\nhttp://www.intel.com/support/motherboards/desktop/sb/cs-009040.htm
632350
OK, this is the actual procedure, read carefully.\n\nIf you have already bought the RAM, skip this paragraph and go to the next step. If you have not bought it yet, just remove your old one and take it to the shop. Tell them you want the same type of RAM but in a different/same capacity. This saves you alot of trouble telling them whether it's SDRAM or DDR RAM. Just bring the sample.\n\nThere is no installation involved. You just need to put the new or additional RAM into the DIMM slot(there is only one type of slot for RAM so you can't go wrong) and start your computer, that's all. The computer will automatically calculate the new size of the RAM and adjust itself automatically.\n\nIf you are still unclear, do not hesitate to post here. Good luck!\n\nCheers!\nALWAYS LOOK ON THE BRIGHT SIDE OF LIFE