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how does dual channel ram work

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Original Message
Name: bigbwoi2000
Date: October 9, 2005 at 04:06:18 Pacific
Subject: how does dual channel ram work
OS: win xp
CPU/Ram: celeron D/512
Comment:

How does dual channel work and what better is it then the regular channel. Cause i'm looking into a new board (P4P800Deluxe) for overclocking abilities and newer features than this crappy board i got now.

Thank you
BigBwoi2000

Hp Pavillion a1010n
Asus P4GV-LA Motherboard
Intel Celeron 2.93 GHz
160 Gb Hard Drive
512 pc3200 Mb of Ram
64 Mb Graphics Chip
Windows Xp Home Edition


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Response Number 1
Name: plainandsimple
Date: October 9, 2005 at 04:52:13 Pacific
Reply: (edit)

http://www.dslreports.com/faq/9216

http://www.dslreports.com/faq/overclocking/1.1%20Memory


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Response Number 2
Name: jam
Date: October 9, 2005 at 06:40:49 Pacific
Reply: (edit)

Dual channel is a function of the motherboard, not the RAM. It's used to combine the RAM's throughput so that it will keep pace with the CPU's bandwidth.

For example...a P4 running at 200MHz (800FSB) has a bandwidth of 6400MB/s. PC3200 RAM running at 200MHz (DDR400) in single channel mode has a throughput of 3200MB/s...if a 2nd matching stick is added & dual channel mode kicks in, the two throughputs are combined, creating a max throughput of 6400MB/s (3200 x 2). Therefore, your CPU's bandwidth & RAM's throughput are in balance.

In reality though, the performance gain is more theoretical than actual, except under limited circumstances. But if your board supports it, you should take advantage of it.


ASUS A7N8X-X
Athlon XP 1800+
8.5 x 200MHz
1024MB PC3200 2.5-3-3-7
Asus A9550GE/TD 128MB
WinME/WinXP Pro SP2


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