Tom's Hardware > Forum > Motherboards & Memory > Memory > [Solved] Memory Set-up 1:1 ratio with Phenom II

[Solved] Memory Set-up 1:1 ratio with Phenom II

Forum Motherboards & Memory : Memory - [Solved] Memory Set-up 1:1 ratio with Phenom II

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Best answer from cjl.

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omnimodis78   08-16-2009 at 07:21:23 PM

Well, here it goes....the 1:1 ram ratio question. I've been getting info from left and right :pt1cable: about this issue but it seems that there are lots of perspectives out there regarding what's the best memory ratio setting, but those are mostly in relation to Intel CPUs, but I have a Phenom II 940 and I'd really like to get to the bottom of what's best for my set-up. I'm using 2x2gb G.skill DDR2-1000 ram, and right now I have it set up at 1:1 ratio, with the FSB set to 250. All feedback is appreciated.


Message edited by omnimodis78 on 08-16-2009 at 08:21:51 PM
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Best answer from cjl
There really isn't any FSB or 1:1 ratio to speak of with Phenoms. Run it as fast as you can (within reasonable voltages) and call it good.
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cjl   08-17-2009 at 08:15:07 AM
Best answer

There really isn't any FSB or 1:1 ratio to speak of with Phenoms. Run it as fast as you can (within reasonable voltages) and call it good.

------------------------------ Asus P6T deluxe
i7 965 @ 4.2GHz (200*21), 1.384V
12GB Corsair Dominator DDR3-1600 CAS 7
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VirtualDementia   08-17-2009 at 07:06:01 PM

What is best? 1:1 ? 2:1 ? 4:1 ?

I'm unfamiliar with the ram/FSB ratios.

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omnimodis78   08-17-2009 at 07:42:57 PM

Well that's what I'm trying to get settled, at least to my satisfaction. It all depends on whose opinion you get, but I would assume that there would be a clear answer to this since we're not talking about anything magical... The theory is that when you run 1:1, you're "synchronizing" the ram with the CPU, so the ram doesn't have to "wait" for the CPU to fetch the data from it (this is a very basic way of describing it). Not sure what cjl meant by there's isn't any FSB or 1:1 to speak of with Phenoms as there is the option to set both the FSB and the ratio - so what's the optimal setting?

------------------------------ AMD Phenom II X4 940BE @ 3.63Ghz | MSI K9N2-SLI Platinum | BFG GeForce GTX 275 OC | 8GB G.Skill DDR2-1000 4x2GB 4-4-4-12 | Corsair 650TX psu | Sound Blaster X-Fi XtremeGamer| 3TB SATA | Windows 7 Professional x64
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Dekasav   08-17-2009 at 07:43:08 PM

With AMD systems, the memory ratio really means nothing. Run the memory at whatever speed it's supposed to run at, with whatever timings you want.

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omnimodis78   08-27-2009 at 04:27:05 PM

Thanks for the feedback so far.

------------------------------ AMD Phenom II X4 940BE @ 3.63Ghz | MSI K9N2-SLI Platinum | BFG GeForce GTX 275 OC | 8GB G.Skill DDR2-1000 4x2GB 4-4-4-12 | Corsair 650TX psu | Sound Blaster X-Fi XtremeGamer| 3TB SATA | Windows 7 Professional x64
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