Also in RAM you have some PC2 things , is that any factor? For example my current is PC2-5200 but I was looking about the 2nd ram and they don't have 5200 but 4200 , but the MHZ is the same.
RAM
#1
Posted 07 August 2008 - 12:36 PM
Also in RAM you have some PC2 things , is that any factor? For example my current is PC2-5200 but I was looking about the 2nd ram and they don't have 5200 but 4200 , but the MHZ is the same.
#2
Posted 07 August 2008 - 03:43 PM
PC5200 memory is effectively the same as PC5300 aka DDRII 667. Some manufacturers label this as PC4300, PC5400 and PC5300.
#3
Posted 07 August 2008 - 04:40 PM
#4
Posted 07 August 2008 - 05:30 PM
In memory it says current memory clock 244mhz , my RAM is 1GB , and memory speed is 266.7Mhz ( 4200 ) ( Thought its 533mhz based that the ram is 1GB 533mhz PC2-4200.... im confussed and not sure about anything now.
Edited by mystery_man_, 07 August 2008 - 05:32 PM.
#5
Posted 07 August 2008 - 08:51 PM
DDR = Double Data Rate. Your RAM operates at an underlying speed of 266.7mhz, but it manages to send two instructions per clock cycle, giving it an effective speed of 533mhz.
As for why your memory seems slightly underclocked at 244mhz instead of 266.7mhz, it is most likely due to the FSB:RAM ratio you are currently using.
#6
Posted 08 August 2008 - 06:44 AM
Btw thanks for the help , now im more confident about buying the right RAM , I saw they got the same one as I have in shop 1GB ddr2 533mhz same pc2.
#7
Posted 08 August 2008 - 10:01 AM
[DDR2 SDRAM] is an evolutionary improvement over its predecessor, DDR SDRAM. ... The key difference between DDR and DDR2 is that in DDR2 the bus is clocked at twice the speed of the memory cells, so four bits of data can be transferred per memory cell cycle. Thus, without speeding up the memory cells themselves, DDR2 can effectively operate at twice the bus speed of DDR.
#8
Posted 08 August 2008 - 01:55 PM
#9
Posted 08 August 2008 - 07:52 PM
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