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How to overclock four gig's of Corsair ram?

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So I have a question about how to properly overclock my four gig’s of Corsair Dominator 1066 (PC2 8500) memory. But before I ask how to, let me first tell you what I have in my system;


For the motherboard I have a: EVGA 122-CK-NF68-A1 LGA 775 NVIDIA nForce 680i SLI ATX Intel Motherboard.


For the processor I have a: Intel Core 2 Quad Q6600 Kentsfield 2.4GHz LGA 775 Processor.


For the power supply I have a: COOLER MASTER Real Power Pro RS-850-EMBA ATX12V / EPS12V 850W Power Supply.


I am not sure if any other information is needed, if it is please reply and tell me what else I need to include and I will. Now that you know what I am running, let me explain what I am hoping to accomplish by overclocking my memory.


First off, my memory currently only runs at 800mhz when I start my computer up, and since I bought 1066mhz memory, that’s what I would prefer to run at. Secondly, I am running Windows Vista Ultimate 64bit, and my Windows Vista Experience Score is 5.9 for my processor, graphics, gaming graphics, and primary hard disk. But for my memory (ram), I only score a 5.4.


I am hesitant, on my own and without instruction, to just jump into my mother board’s bios and start adjusting the memory timings and voltage around without really knowing what to set them to. That is why I have come here to inquire from those that know better than I do, what exactly I need to do and how I need to do it without burning anything up and having a fried computer on my hands.


So I will now post what I have written and await any words of encouragement and guidance I may be given :D:


- Chartercableguy

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Your motherboard sets the RAM speed at 800 MHz by default because that's the highest JEDEC standard for DDR2 modules. For getting 1066 MHz, you can enable SLI-ready memory, which is easy to do from the BIOS, but I don't really recommend that.


Since you're planning on overclocking that RAM anyway, I'd say you should adjust timings manually. If you set it to 1066 MHz, 5-5-5-15-2T, 2.2V and leave everything else on auto your memory score should probably rise a bit.


This is an excellent guide to overclocking, using the same motherboard you are;



If your memory rating doesn't go up after that change, you are being bottlenecked by your CPU's FSB and you'll need to overclock that too to get any performance benefit.


With the Core microarchitecture, you'll often get more benefit from running your RAM at lower latency settings than just pushing RAM frequency skywards. I'm running my Corsair 8500C5D's at 900 MHz at 4-4-4-12-2T, which gives better performance, at least benchmark-wise, than 1066 MHz at 5-5-5-15-2T. This also means I can run my FSB and RAM in a 1:1 ratio, which is also good for performance.

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