can we use RAMS with different speeds?
536868
In some cases it matters but with older ram not really. As long as your motherboard supports the speeds it's okay. You computer will take the speed of the slower ram though. So if one ram speed is 133 and the other is 100 both sticks will run at 100
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.
1072765
Actually, this is not quite correct. There is something more advance being researched and discussed: ferroelectric RAM, a revolutionary new type of chips that can hold 12TB or something like that in the space of one of the silicon chips of today's RAM. Google ferro-electric ram and see what pops up.
175721
yes they are interchangeable.. its more or less a speed rating. unless you overclock, or are going for dual channel, no problem.
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.
324182
Yes, they work together fine.  My parents have a Gateway Performance 750 and when upgrading I could not find a PC100 stick of RAM anywhere for some reason.  I used PC133 and it works fine.  For the best performance you should use matching RAM (though I don't think it will really matter if you have to use 100MHz or 133MHz RAM - still slow).  This is to make sure that there is no bottleneck within the memory pathways and that the timings are identical.
609580
The straight forward answer is you may be able to use two different sizes of DIMMs (256MB, 512MB or 1GB), but you can't mix different types or speeds of DIMMS (such as 266MHz, 333MHz, or DDR-2100, DDR-2700, etc.).  You will need to always match the memory type or speed in "MHz" for them to work.\n\nSome motherboards require you to install two identical RAM modules at a time.  The best thing to do is ask a RAM distributor online such as www.buymemory.com.  They will tell you exactly what RAM type you need and can save you quite a bit on memory versus any retail store.
853916
You can't mix and match memory, if your motherboard is setup for pc2700 then thats what you have to use, if its capable of reading 3200 then you'll have to replace all the ram (if you have 2 sticks you'll have to replace both)\nThe increase in speed from 2700 to 3200 is only 73mhz so unless you are going to double the existing memory (1gb to 2gb) you aren't gonna notice much if any difference.
622992
You might need more RAM
878708
It depends on how many slots you have for memory.  If you have 2 sticks of 128 Mb to make 256 Mb currently in there and have no more slots, then you cannot combine.  If you have 1 stick of 256 Mb and 1 512 Mb stick and 2 slots, then you can combine them, just plug in the new memory.  If you have 2 sticks of 256 Mb to make the 512 Mb of RAM, then that's all you can use.  What do you have?
310741
I followed the link below.\nHe claims that it uses PC100, it's relatively old RAM.\n\nCrucial says that they recommend PC133 RAM, and don't worry that it's faster. It'll slow down to the proper speed.\n\nRAM can slow down but it's very difficult to speed up.
128090
yes you can. i did it on a P1 (133MHz) with 128MB Ram, but it's horribly slow ;-)
855860
yes you can.  As long as you are using any drivers after the early 80 series drivers you can mix brands.  Only requirements are the same gpu's, which you meet.  Timings will sync to the slower one but it's still ok to do.  I recommend the 91.47 drivers from http://www.nVidia.com if you don't have it already.
472619
To add on the posts above.  Yes you will want to get the faster RAM, especially if your motherboard supports that bus speed.  Even if your motherboard's bus speed is slower, get the faster RAM, it will slow itself down automatically to operate with your system, but if you ever decide to overclock your FSB, then you won't have to worry about frying the RAM modules.\n\nFor reference, 266MHz RAM is referred to as PC2100, and 333MHz is referred to as PC 2700.  PC 3200 is 400MHz and it goes on.  \n\nThere are other factors to the speed of a RAM module that are often overlooked.  Make sure you purchase low-latency RAM.  It will be a bit more expensive, but well worth it.  The cheap RAM is called high-density, then you have low-latency and ultra low-latency (may be others).  Also, make sure you check the SPD timings (Serial Presence Detect), and compare them.  The lower the numbers, the faster the RAM.  Hope this was informative enough.  Good luck.
476118
SDRAM (single data rate, older)\nDDR (double data rate)\nDDR2 (double data rate with enhanced clock frequencies)
18943
This depends on the Type of RAM.\n\n\nDesktops\n \nEDO and FPM (very old) run at 25/33 Mhz\nSDRAM runs with the system bus at 66/100/133 Mhz\nI don't know about Rambus, but I think it's some 266,333, 400, 500, 667, and 800 Mhz.\nDDR has 266, 333, 400Mhz\nDDR2 has 400, 533, 667, and 800Mhz.\n\n\nNotebooks/laptops\nSODIMM has 100,133,266,and 333Mhz
984607
Speed and type of RAM used is dependent on the chipset used to make the mainboard. \n\nIn your case, the answer is "no way". DDR2 didn't exist back then except in a lab.