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I have purchased 2 x samsung chip 1 GB ddr-400 PC3200 184 pin chips to up grade my ram on my hp pavallion t680a. I installed these and my system seemed to reconigise the fact that the ram had been increased to 2 GB - but I had a number of problems where my system closed down (giving a blue warning screen with various codes each time). I also ran a PC Doctor Diagnostic and an error came up "memory advanced patern test = me516-5". It appears that the Samsung chips are the correct type - but do not seem to be compatatable. Is there some sort of BIOS patch I need to install for the ram upgrade to work or are the Samsung Chips not compatatable with the HP machine? THANKS!!!!!

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  • sreeradh p.r
    sreeradh p.r May 11, 2010

    samsung chips compatatable with HP machine



    please same chip two memory

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Hello. Looks like your PC requires specific (somtimes known as proprietary) RAM. Go ahead and update your BIOS from HP's Site. Probably won't do you much good. Found this on a website: "Your HP Memory Pavilion t680a only supports modules made with a specific type of chip build. If you come across a website and find what seems to be the exact same memory for a lower price, it is likely that the cheaper memory will not work in your system. By ordering under your model from Upgrade Computer Memory, your selected memory modules are Guaranteed To Work or your money back!"

Posted on Jul 17, 2008

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Please use same chip memory

Posted on Jul 17, 2008

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My name is Siavosh Eskandari. I have a desk top PC Compaq presario Desktop with Intel celeron processor 2.7 HHz Model SR1010NX, Prod. # DW25AA-ABA,Serial # MXK4180P8Y with 256 MB PC 2100 DDR SDRAM. The...


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Few questions about RAM memory?


Solution:



i)  LOW DENSITY modules have 100% compatiility with ALL systems and ALL chipsets.
    HIGH DENSITY modules only have 10% compatibility

    here compatablity means LOW DENSITY RAM are accepted by all system(100%)  or any make           system.. HIGH DENSITY RAM are accepted by 10% by only some system or computers...


ii) in order to check system performance or amount of Computer RAM usage press the ctrl+alt+del
   simultaneously a new window(window task manager) will appear showing:

    CPU usage: showing the amount of CPU or processor utilized at that particular time.
    PF usage: showing the amount of RAM memory utilized at that particular time.
    Physical Memory: showing Total RAM Memory, Available Ram memory....

iii) baiscally they are two types of RAM they are:

    DDR1:which is older one supported by older system  or older mother boards which is costlier
    DDR2: which is latest one supported by all new system or new mother boards which is less                         costlier

    DDR: double data rated ram......which will send data at a double rate compared to SD RAM

iii) here color doesnt matter, these slots either support DDR1 or DDR2 but not both at a time
    
    DDR1 has 184 pins or gold plated pinssss... on the edge of the RAM
    DDR2 has 240 pins 

    so difference doesnot allow DDR2 to placed in DDR1 motherboards or vice versa...

iv) it does have anything to do with no of chips on the RAM but they only differ whether it is DDR1 OR DDR 2(DDR2 are much faster than DDR1)

NOTE: whatever may the the RAM, each RAM has FSB(called Frequency...) which determines the frequency of rate at which data is tranferred from RAM to processor(CPU)  usually in MHZ such as FSB 300, 400, 200 , 333...................

more the FSB the faster data is transferred to the processor(CPU)

dont worry even RAM with less FSB's work well with the processor....having 1 GB RAM or 2 GB RAM is engouh, it only matters with the speed of CPU ... but not RAM......
    

    
                                         

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