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Can't make DDR3 2000 post

post #1 of 9
Thread Starter 
I finally have a really good case and liquid cooling, so my airflow is great, and i can make my 965 do whatever i want it to, but my ram just kills me.

even with my cpu-nb at 3000, i cant for the life of me get ddr3 2000 to even post..

So my question is, what sort of timings could I get for 1333 with this set of ram, and how would you suggest i get it there?
post #2 of 9
Mine does the same. I tried 2000 with some hypers I have and it just wasn't going to happen so I got to 1730 6-6-6-18.

1600 is good place to start then just drop each timing and run something like superpi as a quick stability test. Once you think you have you have lowered each one as best you can then some prime 95.
Frank
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Frank
(13 items)
 
Dominatrix
(10 items)
 
 
CPUMotherboardGraphicsRAM
Core i7 4770K Asus Maxiums VI Extreme Gigabyte G1 Gaming 1080 16gb G.Skill Trident X 
Hard DriveHard DriveCoolingOS
Samsung 256gb 850 Pro 2Tb WB Black Corsair H100i GTX Win 10 x64 
MonitorKeyboardPowerCase
AOC U3477PQU Leopold Cherry Browns  EVGA 850W SuperNOVA G2 Fractal Design Define R5 
Audio
Asus Xonar D2X  
CPUMotherboardGraphicsRAM
i3 4370 Maximus VII Impact Asus 960 Strix 4gb Vengeance Pro 2400 2x8Gb 
Hard DriveOptical DriveOSPower
Samsung 128gb 830 3 x WD Red 3Tb Windows 8.1 x64 Corsair RM550 
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post #3 of 9
Yea Deneb doesnt have the best IMC, I couldnt get mine above 1700. I would shoot for 1600 CL7 or CL6. CL6 will likely require a decent amount of extra voltage and will outperform 2000mhz cl9 on your setup.
post #4 of 9
Thread Starter 
what kind of voltage do you think it would take?
i have this set btw
http://www.newegg.com/Product/Produc...82E16820231419
post #5 of 9
Well I would say 1.75v for cl6 which is fine for Deneb IMC but all are different. I would shoot for 1600 CL7 first then see how much better you can do.
post #6 of 9
Thread Starter 
alright, I'll try that right quick
post #7 of 9
Thread Starter 
I didnt get a chance to post last night, but I ran into a bit of a weird snag

1600 is stable at 7-7-7-20 1T and 1333 is stable at 6-6-6-18 1T
but whenever i change 1333 to 5-5-5-15 it will post, but it will say 'CMOS Checksum Bad'
or something along those lines, and the same happens with any CAS 6 timings for 1600

is there a way to get past this, or have i reached my motherboards limit?
post #8 of 9
Quote:
Originally Posted by Hobybobag View Post
I didnt get a chance to post last night, but I ran into a bit of a weird snag

1600 is stable at 7-7-7-20 1T and 1333 is stable at 6-6-6-18 1T
but whenever i change 1333 to 5-5-5-15 it will post, but it will say 'CMOS Checksum Bad'
or something along those lines, and the same happens with any CAS 6 timings for 1600

is there a way to get past this, or have i reached my motherboards limit?
When it comes to those speeds/timings you haven't reached your motherboard's limits, you've reached your RAM's limits (at least at the voltage you're using).

I have the same motherboard as you, and it is capable of running ~1850mhz 6-6-6-18 1T with your chip and the right ram (Elpida Hypers), but your ram isn't capable of those speeds/timings.

I'd say your best shot would be to try and run at ~1600mhz 6-7-6, but you might need 1.70-1.75v to get there. If that fails then I would just use 1600 7-7-7.
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Mix & Match
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90GB Force GT / F3 1TB / WD 640GB Stripped ;) Dell Ultrasharp U2410 24in Enermax Evo 1250W 
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post #9 of 9
Thread Starter 
Quote:
Originally Posted by HobieCat View Post
When it comes to those speeds/timings you haven't reached your motherboard's limits, you've reached your RAM's limits (at least at the voltage you're using).

I have the same motherboard as you, and it is capable of running ~1850mhz 6-6-6-18 1T with your chip and the right ram (Elpida Hypers), but your ram isn't capable of those speeds/timings.

I'd say your best shot would be to try and run at ~1600mhz 6-7-6, but you might need 1.70-1.75v to get there. If that fails then I would just use 1600 7-7-7.
Alright, it sounds like I'm sticking to 1600 and 7-7-7-20 then, I'm already using 1.75v, and I probably shouldn't give it much more...

I may need to make another thread for this in the motherboard forum, but twice now I've had an overclock completely stable (20 runs of IBT on max), then shut it down for the night, and then come back to it not even being able to post the next day.. What's up with that?
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