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Building O/C system Memory question.

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I am building a system based on this spec. I wish to go for 4GB rather than 2GB ram. I am unsure which ram to go for (I want 2x2GB rather than 4X1GB modules). In the article above they say they are overclocking to 900 (450Mhz?), how do I know what memory I can safely do this with? Can anyone suggest a reasonable product to use?

Thanks
post #2 of 2
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Originally Posted by Man_o_meny_questions View Post
I am building a system based on this spec. I wish to go for 4GB rather than 2GB ram. I am unsure which ram to go for (I want 2x2GB rather than 4X1GB modules). In the article above they say they are overclocking to 900 (450Mhz?), how do I know what memory I can safely do this with? Can anyone suggest a reasonable product to use?

Thanks
There are a lot if memory that can run 900 (1 : 1 with FSB 450) "safe" but why would you run your memory 1 : 1.

I think you should go for 1066or higher, because Intel chipset performence better with higher MHz and looser timing then with lower Mhz and tighter timing and with any other divider then 1 : 1.

For exemple:

Go with FSB 266 or 333 and 1066 5-5-5-15 or 800 4-4-4-12, you be better of with 1066, you get higher bandwidth and lower latency.

And if you OC FSB to 400 and 1066 5-5-5-15 or 800 4-4-4-12, you be better of with 1066, you get higher bandwidth and lower latency, the different is bigger now because you use 1 : 1 with 800 and that´s the worst divider you can run with a Intel chipset.

And if you OC FSB to 450 and OC your 1066 to 1080 5-5-5-15 and 800 to 950 4-4-4-12 (if you´re lucky) you be better of with 1080, you get higher bandwidth and lower latency, the different is same as with 1066 and 800 because you use 1 : 1 with 950.

Why is that, because that´s the way it´s with Intel Memory Control Hub (MCH, North Bridge) and a thing called MCH Read Delay (tRD) and that´s the time it takes to transfer data from the system bus (FSB) to the memory bus and vice versa, with a other word latency.

Read this if you want to learn more about it.

http://www.anandtech.com/mb/showdoc.aspx?i=3208&p=4


Here´s a example of good 2x2 (4Gb) ram and they have good heatspreader to.

http://www.newegg.com/Product/Produc...82E16820227289

And you should consider to switch that E2140 for a E8400, E2140 have FSB 200 CPUspeed 1,6 and L2 cache 1MB and E8400 have FSB 333 CPUspeed 3,0 and L2 cache 6MB.

If you gonna get some OC out of that E2140 you have to push it hard and it´s gonna get hot, the E8400 can do 3,6 with very little vcore increase and runs very cool.
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The Blue Beast
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7-2600K cooled by Heatkiller Rev 3.0 LT ASUS P8Z68 Deluxe EVGA GTX 580 SC in SLI cooled by Koolance VID-N... 2x4GB G Skill RipjawsX 1600C8 
Hard DriveOptical DriveOSMonitor
Intel SSD 510 120GB / 250GB + WD Black Caviar 1TB Samsung DVD Win 7 64-bit Samsung 2443BW @ 1920x1200 
PowerCase
Corsair HX850 Lian Li PC-343B 
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