Dual channel or 800 Mhz?

June 8, 2011 at 07:41:45
Specs: Windows 7
I got an asus p5n-e sli mobo and an intel core duo E6550 processor. I had 2x1 gb ram in dual channel running at 800 mhz and I recently bought 2 more. The thing is p5n-e sli supports all 4 only if they run at 667 Mhz and not 800. Since i never use more than 3 gb of ram I have 2 options:
1) Have all 4 rams running at 667 Mhz in dual channel
2) Leave 1 slot empty and have 3 gbs of ram running at 800 Mhz but in SINGLE CHANNEL.
So my question is which of the 2 sollutions is better as far as Ram speed is concerned? 800 mhz single channel or 667 in dual channel?
I repeat that i never actually need more than 3 gbs so speed is my main concern here.

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June 8, 2011 at 07:57:59
Looks like the proper speed is 667 anyway. See the chart in the link below.


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June 8, 2011 at 08:31:07
OtheHill is correct. The E6550 runs at 1333MHz FSB so the correct RAM speed is 667MHz. That will give you the much coveted 1:1 ratio & the best overall performance. 800MHz would give you a ratio of 5:6 which is NOT optimal.

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June 8, 2011 at 10:04:46
Thank you both! I 'll put all 4 of them then..

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