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why do people not like triple channel memory?

post #1 of 7
Thread Starter 
i saw a few people in various threads mentioning that they dont like triple channel memory(like on the x58 boards) so i was wondering what about it is a negative/Con?
i thought triple channel was better because it has a larger memory bandwidth, but i really dont know a lot about the details of how it works.
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post #2 of 7
It does indeed have a larger memory bandwidth, but the extent to which most user's running triple channel will see this improvement is next to nil. Also, it is much more common and possibly cheaper to find motherboards as well as cpus that support dual channel memory, as almost all aftermarket boards will support it. Triple channel memory I think would only benefit you if you have applications that rely heavily on memory speed, such as VMWare/Player, or running multiple OS, and video/audio editing/recording. I don't claim to know much about the difference, just going off of what seems the logical explanation. I can't imagine that games would see a noticable increase of performance from being triple over dual.
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post #3 of 7
Memory is all the same; DDR3 is DDR3, there is no physical difference between dual, triple, and quad channel RAM.

With memory, it just means how many modules were tested as a single kit. In other words, single channel means 1 module. Dual channel means 2 modules matched and tested for a kit. Triple channel means 3 modules matched and tested for a kit. and so forth..

Now whether there is an actual performance difference depends on the motherboard, NOT RAM. A triple channel memory kit in a dual channel motherboard will just run as dual channel with an extra module. A quad channel memory kit in a triple channel motherboard will run as triple channel with an extra module. A quad channel memory kit (4 modules), will run as double dual channel in a dual channel motherboard since all slots are filled. Quad channel memory only means the memory is matched, but it does not mean the quad channel memory can make a dual channel motherboard run quad channel.

Triple channel is theoretically better than dual, and quad is better than triple.

Hopefully I cleared some things! biggrin.gif

Cheers
post #4 of 7
Thread Starter 
Thanks guys, i saw a few people saying they dont like the way triple channel works. i guess its because its more money.

and tim i meant memory controllers/boards i know that all ddr3 is just ddr3 and not set for a specific channel config. i probably could have phrased it better, thanks for the explanation though smile.gif
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post #5 of 7
Nehalem can clock memory significantly higher in dual-channel than in triple. The reason for this is that Nehalem has a 96-bit memory queue which requires the uncore to be double the memory MT/s in triple channel, but only 1.5x in dual-channel. Since most Nehalem parts have extreme difficulty in clocking the uncore past 3.8-4GHz for 24/7 use, dual channel is often a requirement to take advantage of very fast memory.

Triple channel also has higher latency than dual, often significantly so on Nehalem.

In the end, if you have fast memory, you can often get superior memory performance in dual-channel than in triple.
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post #6 of 7
Quote:
Originally Posted by Tigerboy View Post

Thanks guys, i saw a few people saying they dont like the way triple channel works. i guess its because its more money.

and tim i meant memory controllers/boards i know that all ddr3 is just ddr3 and not set for a specific channel config. i probably could have phrased it better, thanks for the explanation though smile.gif
bingo
tell them u need to come up with a better reason than that
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post #7 of 7
Triple channel has reached EOL. It has been replaced by quad channel. thumb.gif
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