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Which is better: dual channel 2 x 2gb or single channel 3 x 2gb ?

post #1 of 7
Thread Starter 
Quick question:

Right now with my cpu cooler it covers the first slot of ram, so i m only using 2 x 2gb ram in slots 2 and 4.

I was wondering would i have a drop in perofrmance if i put in another 2gb of ram into the 3rd slot...but then it won't be running in dual channel

Is it worth it for 6gb of ram in single channel vs. 4 gb of ram in dual channel?

Also I am not looking to buy new ram, so no need to suggest me that. I have 4 x 2gb of ram (purchased at different times) right now. I don't have any issues with 4 GB of ram in my system right now, but just wondering fi adding the extra 2 GB be good idea? Since I have the extra ram already.
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post #2 of 7
If you have 4 X 2GB why wouldn't you add all 4GB extra as opposed to simply adding 2GB? My suggestion is looking at your typical memory usage, my guess is you most likely don't use more than 4GB typically, so the only case scenario that you're going to see the added benefits of the extra memory would be if you were running out of memory.

Either way, most motherboards can still typically keep the memory in dual channel memory while having one in single channel, though having everything in dual is advised smile.gif
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post #3 of 7
3x2 isn't single channel on your system.
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post #4 of 7
Thread Starter 
Quote:
Originally Posted by appleg33k85 View Post

If you have 4 X 2GB why wouldn't you add all 4GB extra as opposed to simply adding 2GB? My suggestion is looking at your typical memory usage, my guess is you most likely don't use more than 4GB typically, so the only case scenario that you're going to see the added benefits of the extra memory would be if you were running out of memory.
Either way, most motherboards can still typically keep the memory in dual channel memory while having one in single channel, though having everything in dual is advised smile.gif

That is because my cpu cooler covers up the first slot leaving 3 available slots open.
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post #5 of 7
Thread Starter 
Quote:
Originally Posted by Blameless View Post

3x2 isn't single channel on your system.

what is it ?
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post #6 of 7
Quote:
Originally Posted by mcc21 View Post

what is it ?

It's a flex memory mode.

The first 4GiB is in dual channel, and the remaining 2GiB is accessed in single channel if it needs to be. For any use of 4GiB or less, it's as fast as just running a 2x4 configuration. Only when you need more will the last stick come into play, and if you do need that extra 2GiB, it's much faster for it to be there as single channel than to not be there at all.
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X5670 @ 4.4/3.2GHz core/uncore, 1.36 vcore, 1.2... Gigabyte X58A-UD5 r2.0 w/FF3mod10 BIOS Reference R9 290X w/Stilt's MLU 1000e / 1375m E... 2x Samsung MV-3V4G3D/US @ 2000, 10-11-11-30-T1,... 
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Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
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i7-6800K @ 4.3/3.4GHz core/uncore, 1.36/1.2v ASRock X99 OC Formula GTX 780 (temporary) 4x4GiB Crucial Ballistix Sport DDR4-2400 @ 11-1... 
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post #7 of 7
Thread Starter 
Quote:
Originally Posted by Blameless View Post

It's a flex memory mode.
The first 4GiB is in dual channel, and the remaining 2GiB is accessed in single channel if it needs to be. For any use of 4GiB or less, it's as fast as just running a 2x4 configuration. Only when you need more will the last stick come into play, and if you do need that extra 2GiB, it's much faster for it to be there as single channel than to not be there at all.

Thanks!!!
MCC
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Steelseries Sensei Creative T20 
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MCC
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