The natural instinct is to raise voltage in order to get higher memory speeds. The Infineon modules I'm using have taught me not to trust those instincts. I thought I needed 2.7v to run them at 265-270 @ 3-3-2. I found out during my own testing that they performed better with lower voltage. I dropped down to 2.65v, then 2.6v, and now I'm testing the modules at 264 with 2.55v. I've been running dual-Prime with those settings for several hours without a problem.
So how did I find this out? When I was trying to run the RAM at 272-273, I had trouble stabilizing the modules. As a last resort I raised the voltage to 2.8v and found out that made things even worse. That got me thinking. Maybe they don't like voltage. So I started lowering VDimm. The system won't boot with 2.5v. But 2.55-2.6v seems to be the sweet spot.
I'll keep testing and report any new findings.
Update: Core-1 failed after six and a half hours with VDimm at 2.55v. Core-0 was still going after almost ten hours before I stopped the test. Not bad. I'll probably stick with 2.6v because dual-Prime will run forever at that voltage.
4 comments:
My modules top out around 270-271 with 3-3-2 timings. After that, 3D quality gets very funky. The screen will intermittently go black.
For daily use, I run at 290X10 with 183 divider. That gives me around 264 for memory. These modules have no problems running at that speed.
You may have seen a different look to the blog. I was trying out other templates. Didn't like any of them, so I went back to what I was using.
Back on topic, I haven't tested the Infineons individually. But they passed Memtest at 270 (3-3-2).
It's really hard finding the golden pair. Only the company reps seem to have them. lol.
I agree about the layout being easy to read. I hate white type on dark backgrounds. It's much easier to read black type on a white background.
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