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Voltage no longer allows for higher overclocking on ram

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November 4, 2008 6:07:13 PM

I can get my memory to DDR2-870 4-4-3-9 stable. But as soon as I try to go for 900, or even 880 I get errors immediatly. No matter what I do. I have tried upping my NB voltage, RAM voltage basicly everything. Even 2.4v VRAM does not cut it. 2.4v cant even make DDR2-880 stable, even with 4-4-4-12 timings.

My CPU is not the bottleneck, I have made that sure.

OCZ Reaper HPC PC8500 2x2GB
Asus Rampage Formula
Q6600 G0 (435x8)
a b K Overclocking
November 4, 2008 6:31:01 PM

That RAM was factory-overclocked when you bought it. I'm not at all surprised it won't go any higher.
To avoid this problem, and give yourself some headroom, start with RAM that operates at its advertised timings on the JEDEC standard 1.8V.
November 4, 2008 6:37:52 PM

I'm trying to get as high as possible, what RAM is advised? I heard G-Skill makes some really good overclockable ram, is that true?
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a b K Overclocking
November 4, 2008 6:45:33 PM

Well, the timings weren't as tight as yours, but I "accidentally" oc'ed my Mushkin DDR2-800 to DDR2-960 and my system didn't so much as hiccup over it. I say "accidentally," because I'd forgotten to reset a ratio to keep the RAM at 1:1 when I oc'ed my CPU to 3.2 GHz. I'm pretty sure my RAM is still running on the stock 1.8V.
November 4, 2008 6:50:34 PM

It makes so little difference, why do you even care?
November 4, 2008 6:51:04 PM

Yes G.Skill does make some good OC RAM, had my old stuff to almost 1066

a link to the RAM: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
$99 for 2GB (2x 1GB)

*Edit* however with your config, the effect of RAM speeds is negligible. MORE RAM is better than faster RAM in your case. (unless you have the Nehalem, or an AMD proc)
November 4, 2008 6:51:28 PM

I guess so, it's fun though I'm bored most of the times and I generally just tend to overclocking then and all the stuff around it.
November 4, 2008 7:02:30 PM

Higher voltage doesn't always mean faster speeds or better timings for ram. Each stick is different. I had Patriot Viper ram that was rated at ddr2-1150, 5-5-5-15 @2.3V. But it would Always fail memtest86+. After much troubleshooting, I found that the ram passed memtest86+ 1150mhz, 5-5-5-15 @2.0V. So, for some ram too high of voltage will cause worse performance.
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