Questions about DDR RAM
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Posted by Igor on October 2, 2007, 5:31 pm
Please log in for more thread options to 333 MHz (enhanced) memory bus." 333 MHz (PC2700) or slower DDR SDRAM isn't easy to find on today's market, and when you do find it, it's considerably more expensive than the DDR which runs at 400 MHz (PC3200). What would happen if I bought 400 MHz DDR RAM and installed it in a motherboard which only supports speeds up to 333 MHz (PC2700)? Would it work? If it did work, would it work as well as the slower PC2700 RAM? I've gotten conflicting answers to this question. Two computer stores told me that it wouldn't work. Another store and a book I consulted said it would. I'd also like some opinions on which brand of RAM I should get. Kingston and Samsung are ubiquitous where I live, so the choice comes down to one of those. Both brands are about the same price, with the Samsung being marginally cheaper. Finally, would a 128 MB stick of 266 MHz DDR RAM be able to run in the same computer as, say, a 512 MB stick of 400 MHz DDR RAM? If so, would using both at the same time degrade the performance of the faster RAM? -- (Note: I'm using a bogus reply-to address to avoid spam, so please don't reply by email.) | ||||
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Posted by Paul on October 2, 2007, 5:50 pm
Please log in for more thread options If you tell us the motherboard make and model, we give better advice. If the machine is Dell or HP, tell us the model number etc. Faster DDR is compatible with slower speed applications. Whether mixing RAM makes sense, really depends on what speed the motherboard and its current configuration, would support. If your processor is limiting the speeds that the Northbridge can run the memory, then maybe removing the 128MB stick would make no difference. Details count. Motherboard and processor information would help. You can also get some hints from looking at both: http://www.crucial.com ("Crucial memory advisor") http://www.kingston.com ("Memory search") HTH, Paul | ||||
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Posted by Igor on October 3, 2007, 2:54 am
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<snip>
> > If you tell us the motherboard make and model, we give b | ||||
> up to 333 MHz (enhanced) memory bus."
>
> 333 MHz (PC2700) or slower DDR SDRAM isn't easy to find on today's
> market, and when you do find it, it's considerably more expensive than
> the DDR which runs at 400 MHz (PC3200). What would happen if I bought
> 400 MHz DDR RAM and installed it in a motherboard which only supports
> speeds up to 333 MHz (PC2700)? Would it work? If it did work, would it
> work as well as the slower PC2700 RAM?
>
> I've gotten conflicting answers to this question. Two computer stores
> told me that it wouldn't work. Another store and a book I consulted said
> it would.
>
> I'd also like some opinions on which brand of RAM I should get. Kingston
> and Samsung are ubiquitous where I live, so the choice comes down to one
> of those. Both brands are about the same price, with the Samsung being
> marginally cheaper.
>
> Finally, would a 128 MB stick of 266 MHz DDR RAM be able to run in the
> same computer as, say, a 512 MB stick of 400 MHz DDR RAM? If so, would
> using both at the same time degrade the performance of the faster RAM?
>