Single And Dual Channel Ram

i bought a pc with 512 ddr pc3200 DUAL CHANNEL RAM, and here's a pic from CPU-Z:

http://www.geocities.com/abu_has_the_power/memory.JPG

wait, dual channel means that there's 2 sticks rite? i have 2 sticks, but it says single channel in CPU-Z

its maybe an option in the bios, have a look, not to sure bout it though

can anyone help? i already emailed the comp company, but they won't reply till monday, or most likely till monday

are the 2 sticks the same size? ie. 2 sticks of 256mb

man thats some ram pc3200 !!!

ddr should be dual channel cos its Double Data-rate Ram DDR. SDRam is 1channel.

Though what I think the program thinks is banks, since each stick of ram has 2 channel banks. if u have 512 then you can either have 2 banks of 256 or one bank of 512. have a look at ur ram and see if there are memory moduals on both sides of the stick.

if there is only one side then u have your answer. if not then im stumped m8 =(

g'luk

Xan

yeah the only thing i could figure would be a bios option...i wouldnt really worry that much bout it though

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Originally posted by bigdawgfoxx@6 October 2003 - 23:29
yeah the only thing i could figure would be a bios option...i wouldnt really worry that much bout it though

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actually, the speed is very different between dual and single. so if there's chips on both sides of my ram, then its fine?

try putting ram in dimm slots 1 and 3 or two and three...

wat does that do?

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Originally posted by abu_has_the_power@6 October 2003 - 23:59
wat does that do?

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try it and find out... :rolleyes:

ok, i just called tech, and they said they sent me the wrong memory. they're sending me new memory now

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Originally posted by Xanex@6 October 2003 - 09:53
ddr should be dual channel cos its Double Data-rate Ram DDR. SDRam is 1channel.

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um... no.

most DDR RAM motherboards run DDR on a single channel. dual channel is a type of memory controller pushed primarily by nvidia, not a type of RAM.

as far as i know, it's not BIOS options that enable dual channel, but the way you arrange the identical RAM sticks in the slots. if they're not identical, you don't get dual channel... if they're not in the correct slots, you don't get dual channel.

there should be a page in the motherboard manual that explains how to physically arrange the RAM to enable dual channel.

Hey..so is Double data alot faster? i would think slower cuz it has to acces 2 sticks..but i know its supposed to be faster...neone know how that works?..thanx brainiac that helped me understand it :)

DDR is twice the speed of SDRAM running on the same bus speed. theoretically, at least.

dual channel is supposed to be faster than single channel because the computer can split tasks more evenly between the two RAM sticks... it has more bandwidth. but the exact increase in bandwidth isn't really known, and it's definitely less than nvidia claimed it would be. maybe future versions of dual channel memory controllers will start to live up to the hype... who knows.

Dual channel memory greatly increases performance. For example, my computer transfers data at peak 6.4 GB per second. That is more than a DVD worth of data per second. That ceiling is cut in half with single channel memory.

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