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1:1 RAM Issue

Forum Overclocking : Chipsets & Bios - 1:1 RAM Issue

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nvidia3569   06-21-2009 at 12:37:06 AM

I having troble gettin a 1:1 ration with my q6600. my fsb is clocked to 1333mhz and ram is unlinked at 800mhz right now. I have a feeling im bottlenecking my cpu. Myquestion is what would I set my ram to get 1:1? I have corsair xms2 6400 ddr2 800mhz 5-5-5-18?

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kg4icg   06-21-2009 at 02:03:53 AM
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You set your fsb to 400 to get 1:1 with your ram

------------------------------ Did I hit you with a Mack Truck?

 

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wuzy   06-21-2009 at 02:10:34 AM
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As kg4icg suggest, 400x8 (for 3.2Ghz) and using 'linked' to run RAM @400Mhz (DDR2-800) will get you 1:1.

------------------------------ GTL Ref Tweaking Guide - PM for detail
Brand is for the weak-minded, only product matters.
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nvidia3569   06-21-2009 at 03:14:11 AM
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yes but it wont boot into windows. any suggestions all volts are on auto so they can use what ever they need and it wont go....?

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wuzy   06-21-2009 at 08:29:48 AM
- 0 +

For your RAM you should be using 5-5-5-18 2T and at least 2.05V.
Which nForce motherboard are you using? (since you're using 'link/unlinked')
The C55XE (680i, 750i, 780i) is well known for being an absolute PITA when it comes to FSB and Core2Quads, they have various 'FSB holes' which just won't work.
You may have to try 410-420FSB instead and up voltages like SPP(northbridge) to get it stable.

------------------------------ GTL Ref Tweaking Guide - PM for detail
Brand is for the weak-minded, only product matters.
Resilient to marketing.
http://farm3.static.flickr.com/2520/3850950213_aea6bbbcfe_o.jpg
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Crashman   06-21-2009 at 08:54:15 PM
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nvidia3569 wrote :

I having troble gettin a 1:1 ration with my q6600. my fsb is clocked to 1333mhz and ram is unlinked at 800mhz right now. I have a feeling im bottlenecking my cpu. Myquestion is what would I set my ram to get 1:1? I have corsair xms2 6400 ddr2 800mhz 5-5-5-18?



The only problem is that your assumption is wrong. FSB-1333 runs at 333MHz. DDR2-667 runs at 333MHz. Therefore, DDR2-667 is synchronous to FSB-1333 and your running your memory "too fast" to synch.

But what about bandwidth? Your FSB is quad and your RAM is double data rate! That's why there's dual-channel mode, your FSB is 64-bits and a dual-channel set of RAM is 128-bits.

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