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post #631 of 2062
I picked up 16GB (4x4) of this memory today. So far I've had less than stellar results frown.gif 2133mhz with the 1600mhz SPD timings fails Prime within seconds even with up to 1.65V on the memory and 1.25V CPUIO voltage. Right now I'm running 1866mhz with 9-9-9-24 2T and it appears to be stable. I've still got some fiddling around to do. If I get a chance tomorrow I'm going to try just 8GB and see if that helps.
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post #632 of 2062
Thread Starter 
I was pushing 1.55v at 1866 with 8 dimms installed (32Gb) before I started playing around with my secondary timings. Since playing around with the secondary timings, I've passed Prime95 24Hrs with only 1.45v, and am now testing at 1.40v now. The secondary timings really do play a huge part in stability.
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post #633 of 2062
Quote:
Originally Posted by ericeod View Post

I was pushing 1.55v at 1866 with 8 dimms installed (32Gb) before I started playing around with my secondary timings. Since playing around with the secondary timings, I've passed Prime95 24Hrs with only 1.45v, and am now testing at 1.40v now. The secondary timings really do play a huge part in stability.

I see. I'm not very well versed in the memory timings by any means so would you be able to provide your settings? It can wait until you've finished stability testing, of course tongue.gif

I guess it's time to get reading redface.gif
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post #634 of 2062
I'm slowly getting some marginal success.

I'm currently running 1866 10-10-10-28 1T. tRFC is at 171 and the rest are on auto. CPU I/O voltage is 1.15v or 1.17v and vDIMM is 1.6v (may be able to lower it, just figured 1.6v would be a good place to start). I ran Prime95 while using ~93% of 16GB for 3 hours with no problems.
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post #635 of 2062
^ try pushing 9-9-9-24-1T @ 1.5v, people are getting great results with this.
    
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post #636 of 2062
Quote:
Originally Posted by pn0yb0i View Post

^ try pushing 9-9-9-24-1T @ 1.5v, people are getting great results with this.

I'm working towards that tongue.gif I just started Prime at 9-10-10-28-1T. At this point I'm doing it step by step just so I can get a feel for what causes instability.
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post #637 of 2062
Quote:
Originally Posted by tehmaggot View Post

I'm slowly getting some marginal success.

I'm currently running 1866 10-10-10-28 1T. tRFC is at 171 and the rest are on auto. CPU I/O voltage is 1.15v or 1.17v and vDIMM is 1.6v (may be able to lower it, just figured 1.6v would be a good place to start). I ran Prime95 while using ~93% of 16GB for 3 hours with no problems.

I am now running 1732 Mhz 8-8-8-24 -1.35 volts and all stock voltages for the CPU. I had gotten this RAM up even higher with a bigger CPU OC - etc, but I wanted to see where I could get at all stock volts and this is pretty darned good for an AMD. You should be able to be hitting 2133+ with 20+ Gbs throughput with your Intel rig.

440
Edited by Jagged_Steel - 3/27/12 at 11:40am
    
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post #638 of 2062
Quote:
Originally Posted by Jagged_Steel View Post

I am now running 1732 Mhz 8-8-8-24 -1.35 volts and all stock voltages for the CPU. I had gotten this RAM up even higher with a bigger CPU OC - etc, but I wanted to see where I could get at all stock volts and this is pretty darned good for an AMD. You should be able to be hitting 2133+ with 20+ Gbs throughput with your Intel rig.
440

Yea, I'm not sure why I'm having such particular difficulty with this memory. Plenty of other SB users have 16GB and they're hitting speeds I can't even boot at with max voltages. I'm thinking either the IMC in my chip is absolutely awful, my motherboard is to blame, or I just haven't found the magical sub-timings needed.

Regardless, I'm now ~1.5 hours into Prime at 1866 9-10-10-28 1T.
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post #639 of 2062
Thread Starter 
Quote:
Originally Posted by tehmaggot View Post

I see. I'm not very well versed in the memory timings by any means so would you be able to provide your settings? It can wait until you've finished stability testing, of course tongue.gif
I guess it's time to get reading redface.gif

I'll post some screen shots when I get a chance. I've noticved I need to tweak the ram settings when I run the CPU OCed. I stabalized the CPU at 4.4GHz with the ram at 1333, then stabaqlized the Ram at 1866 with the CPU at 3.2GHh. But with both OCed, I was having errors in Prime 95. I think I got it stable now, I just had to set commant rate to 2 and the tWCL to 8 (from 7).
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post #640 of 2062
Quote:
Originally Posted by ericeod View Post

I'll post some screen shots when I get a chance. I've noticved I need to tweak the ram settings when I run the CPU OCed. I stabalized the CPU at 4.4GHz with the ram at 1333, then stabaqlized the Ram at 1866 with the CPU at 3.2GHh. But with both OCed, I was having errors in Prime 95. I think I got it stable now, I just had to set commant rate to 2 and the tWCL to 8 (from 7).

I appreciate it. I tried resetting my CPU to stock and doing the memory only and that didn't really net any better results.

I'm currently at 3 and a half hours with 1866 9-10-10-28 1T. Going to let it run for another half hour and try decreasing the second timing to 9 and then test again tongue.gif
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