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stumped on ddr3 to oc a 1090t - Page 2

post #11 of 20
Quote:
Originally Posted by Redwoodz View Post
Well,call me foolish but Iv'e found my systems to be more responsive with faster RAM,this is OCN after all.I would rec. this low-voltage kit,which overclocks very well
http://www.newegg.com/Product/Produc...82E16820231404
I'm a little curious what was the lowest you were able to get your latency to on that kit? Also did you a run memmax to see your latency score and your transfer speed? Just curious.
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post #12 of 20
Having recently "made my overclocking bones" on a 1055t with a fairly marginal board & then switching to an SB rig, I'd say this. The weakness of AMD is the Internal Memory Controller, That is why you see SB rigs with slower memory kits posting stupid numbers. AMD needs all the memory speed you can give it. I bought a Mushkin 996997 kit for my SB rig. If I were doing another AMD rig I would use this same kit, 2133 9,11,10,28,1t. At 300 fsb & 13.5 multiplier you could st the nB at 3000 & ram at 1600 & tighten the timings up substantially. That should be a pretty fast tune up. Since you have a black & can raise the multiplier, there may be better settings. But that would be a good place to start.
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post #13 of 20
According to AMD's own data actually, the reason they do not rate their current IMCs for larger than DDR3-1333 is because of the Northbridge frequency. AMD states that if the NB frequency is less than 3 times the RAM frequency (before DDR; so DDR3-1333 = 667Mhz, x3 = 2000Mhz stock NB speed), there will be bottlenecks. For DDR3-1600 you require at least 2400Mhz NB for adequate performance.

However, both the AMD FX series CPU and A-Series APU claim native support for DDR3-1866 - as in, you can actually now set the x9.33 multiplier to run 1866. That means there might definitely have been some improvements to the IMC. What the actual IMC (NB speed) runs at, I don't know though.
post #14 of 20
Quote:
Originally Posted by langer1972 View Post
I'm a little curious what was the lowest you were able to get your latency to on that kit? Also did you a run memmax to see your latency score and your transfer speed? Just curious.
On my kit?It will do 5-5-5-15 at 1600Mhz.Bios would not let me go lower.And yes the NB speeds are critical for better performance.One other thing I noticed in last months OCN Memory madness comp,HTT was a limiter in bandwith also.
Edited by Redwoodz - 6/18/11 at 10:57pm
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post #15 of 20
Quote:
Originally Posted by Redwoodz View Post
On my kit?It will do 5-5-5-15 at 1600Mhz.Bios would not let me go lower.And yes the NB speeds are critical for better performance.One other thing I noticed in last months OCN Memory madness comp,HTT was a limiter in bandwith also.
Thats one nice kit ya got there
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post #16 of 20
Elpida Hyper IC memory are normally able to put on a good show
Most aren't actually able to do 1600 5-5-5-15 though. Redwoodz, is yours OS stable?

Concerning the recommendation on the earlier 2x4GB DDR3-1600 CL8 G.Skill ECOs... actually I've heard from another member who read a review stating that the 2x4GB ECOs don't overclock as well. I can certainly speak for the G.Skill ECOs that come as 2GB DIMMs though; I own 4 individual sticks of those and they can all score pretty decent settings, for their ICs at least
post #17 of 20
Quote:
Originally Posted by xd_1771 View Post
Elpida Hyper IC memory are normally able to put on a good show
Most aren't actually able to do 1600 5-5-5-15 though. Redwoodz, is yours OS stable?

Concerning the recommendation on the earlier 2x4GB DDR3-1600 CL8 G.Skill ECOs... actually I've heard from another member who read a review stating that the 2x4GB ECOs don't overclock as well. I can certainly speak for the G.Skill ECOs that come as 2GB DIMMs though; I own 4 individual sticks of those and they can all score pretty decent settings, for their ICs at least

I didn't do too much testing at that speed(and tbh I think it was around 1590MHZ @ 1.82v) because I was benching for Memory Madness and the scores were not scaling well vs 1780MHz @ 6-6-5-17.Latency wasn't any better either,which lead me to believe either the subs were holding it back or my IMC.This IMC simply would not go over 3010MHz no matter what and I was limited by that.I also could only do it when the ambients were around 22c or lower so had to work fast..lol.I have a 1100T right here I'm getting ready to test.Gotta research more on those sub timings.
edit:


VS


also,for those who want memory like this,they are not manufactured anymore-but you can still find them if your willing to pay
http://www.superbiiz.com/detail.php?...nel-Memory-kit
Edited by Redwoodz - 6/20/11 at 9:57am
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post #18 of 20
Thread Starter 
well i guess that being so new to overclocking that my real problem is that i can get a solid 4ghz and run 1333 on my corsair 8gb kit that rated @ 1333. i manually set all the timings in the bios, tried different voltages, disabled cool n quiet, disabled c1e. So here is my problem...I can get 4ghz if i set the ram to 1066 then run the fsb up to 250 from 200. That leaves the ram @ 1333 which will boot and run all the basic apps but it crashes after an hour of gaming with temps only getting 90F to 100F. I just can't figure out what I'm missing in my bios... I have manually mimiced some "stable" settings of other oc.net users and my system won't even boot, it just runs in a loop up until it tries to load windows. My goal is to run 4ghz to 4.3ghz with my current setup. So here's my call for help. A stable 4ghz system with 8gig of ram. Other people that I have talked to say that my ram is why it's crashing, and that getting higher speed ram then overclocking the cpu to match the rated ram speeds will fix my problems...Any suggestions upon specific settings to reach my "goal" are greatly appreciated...
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post #19 of 20
Have you checked the CPU-NB voltage or NB/chipset voltage? With the higher bus clock running, it may help to make small upward adjustments to either of these.
post #20 of 20
Try disabling 2 cores.That way you can eliminate heat and power draw through the VRM's and focus on your settings.Once you get that stable you will have a better idea of what your chip needs and can try to get all 6 stable.Like this-I just popped this in 4 hrs ago and this SuperPi32m stable
http://valid.canardpc.com/show_oc.php?id=1878765
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