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Q:I have a Dell Dimension 8400. I want to take out the memory and add 3GB of higher speed memory. These Crucial 1GB modules seem to have the same specs as memory which Dell says is compatible with my 8400. Yet Crucial's Memory Advisor says this module is not compatible. Is this correct?
A:Only PC2-5300 modules will work in this system:
Q:What does the 6400 stand for
A:PC2-4200 (DDR2-533), PC2-5300 (DDR2-667), PC2-6400 (DDR2-800), and PC2-8500 (DDR2-1066) memory are all types of Double Data Rate, second-generation SDRAM, usually referred to as DDR2. The varying numbers refer to the different speeds of memory your computer was designed for. PC2-6400 (DDR2-800), which has a bandwidth of 6.4GB/sec and is designed for use in systems and motherboards that require a 400MHz front-side bus, with an effective front-side bus speed of 800MHz.
A:Its referring to the speed of the ram itself in technical terms mostly labeled on the packaging of the item. A dimm module for example a 2gb 800mhz 240 pin PC2-6400 is clocked at 800mhz so the 800mhz is multiplied by 8 bit (smallest digital character) which equals 6400(800x8=6400), same thing goes for a dimm(ram) which is clocked at 667mhz then this would be 667x8=5336 but on the box of the ram you'll see PC2-5300.
A:The 6400 is basically the speed that the RAM runs at. Not sure what the speed is measured by (GHz or MB ect) but naturally the higher the better, however, if you are installing more RAM into a computer then the RAM will only go as fast as the slowest RAM already installed.
I am sorry for the issues that you are experiencing with your memory modules. I pulled up your system and it appears that these memory modules are compatible with your system. At this point I would test each stick individually to see if it just one defective stick. You may even try running each stick individually in the system to see if the error occurs. Please contact us directly, using the information in my signature, if you are still experiencing issues.
Thanks for the update. We appreciate the feedback as it might help other customers on our forum. Please let us know if you have any other questions or concerns.
my scan shows that my PC has a 1Gb and a 1mb memory modules installed. Also that it has a memory limit of 8192MB. Does this mean I cannot install, for example a 1GB module. Ideally I would install two 2gb modules at least. Any help with my options here would be helpful.
Thank you for contacting us today. It looks like any of these upgrades would be compatible with your system.. Since you aren't planning on overclocking your system I would recommend just going with our Ballistix Sport Memory BLS2C8G3D18ADS3CEU. This kit will be faster than BLS2CP8G3D1609DS1S00CEU, and won't require timing adjustments asour Tactical memory (BLT2CP8G3D1608DT1TX0CEU) does. If you have any other specific questions, please let me know.