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Anyway To Get Kingston HyperX Ram To Run At 2105mhz?

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July 1, 2012 12:57:16 AM

I have been trying to get my RAM to run at 2105mhz but have failed every single time. The reason I want to run it at 2105mhz is because my cpu, Intel Core i7 930 is overclock to 4.4ghz and the option for the RAM frequency are 12..mhz, 1683mhz, 2105mhz, and so on. I have ran the RAM at 1683mhz 9-9-9-24 and it was stable, ran memtest86 with no error, also used prime95 blend test. But when ever I select 2105mhz I would all ways, blue screen while trying to play games or while running stability tests. I can run the RAM at 2006mhz and my cpu at 4.2 ghz no problem. The Ram I am using is the Kingston HyperX DDR3 2000mhz KHX2000C8D3T1K3/6GX.

My Spec:
Intel Core i7 930 @4.4ghz/vcore 1.375 and HT ON
6gb Kingston HyperX RAM
Asus P6T SE
AMD 7950
Corsair 1050w PSU
1tb Boot Drive
2tb Storage Drive
a c 241 } Memory
July 1, 2012 3:08:03 PM

To get it to run that far past its rated 2000MHz might work with increased ram voltage but really there is no large performance increase from the ram alone.
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a c 146 } Memory
July 1, 2012 4:13:35 PM

Small gain in the performance ^.

Whats your voltage @ 2000MHz?
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a c 347 } Memory
July 1, 2012 4:48:50 PM

Tad more complicated than that, you'll need to increase your BCLK, increase the DRAM Voltage +0.03v~+0.05v, and increase the QPI/DRAM Voltage to 1.30v~1.35v. If that fails then there's a few more options including modifying you CAS Timings. You might need to also increase the vCore.

Without knowing what your BIOS settings are this is all generic.

I assume your BCLK is 200MHz and CPU Multiplier is 22. You might try BCLK 190~192MHz, CPU Multiplier 23 (4.37GHz~4.42GHz) and DRAM 12 (DDR3-2280~DDR3-2304), and normalize the CAS 9-9-9-(24~27). This might just as much be a CPU drop out as much as the RAM failing during post.

OC results - http://www.tweaktown.com/reviews/3027/kingston_hyperx_d...
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July 1, 2012 9:13:37 PM

At 2000mhz my DRAM Bus Voltage is at 1.66 and the QPI/DRAM Core Volt is at 1.7.
Also my cpu multiplier is at 21, 21 x 210 = 4.410mhz. I have tried increasing my vcore to 1.4 and even 1.42 but with no success. I have Intel Turbo Mode off.

I have tried to changed the timing from the XMP profile of 9-10-9-27 @ 2000mhz to 10-10-10-28, 11-11-11-30, 9-11-9-24, and many more however they have all failed @ 2105mhz.

I am guessing I have to increase the DRAM Bus Volt past 1.66? But is that safe, Intel said that if the DRAM Bus Volt is past 1.65 it could damage your cpu.
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July 1, 2012 9:40:48 PM

In the Bios, I have basically left everything on auto, except for the vcore, DRAM Bus volt, QPI/DRAM Core Volt, cpu multiplier, RAM timing itself, Turbo Mode, and the C1E thingy.
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a c 347 } Memory
July 1, 2012 10:30:01 PM

NEVER set the QPI/DRAM >1.35v and maybe just to test 1.40v. You are as I am typing ruining your CPU. A DRAM Voltage of 1.70v is a crap load better than QPI/DRAM of 1.70v that's CrAzY!!!

IMO be happy with ~2000MHz and try what I posted. Frankly I am not a fanboy of a BCLK >190MHz, and the last time I tried it you get a bad vCore.
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July 1, 2012 11:16:20 PM

jaquith said:
NEVER set the QPI/DRAM >1.35v and maybe just to test 1.40v. You are as I am typing ruining your CPU. A DRAM Voltage of 1.70v is a crap load better than QPI/DRAM of 1.70v that's CrAzY!!!

IMO be happy with ~2000MHz and try what I posted. Frankly I am not a fanboy of a BCLK >190MHz, and the last time I tried it you get a bad vCore.



That is how the original XMP profile #1 sets the QPI/DRAM. I didn't changed that, the only thing I changed are the RAM timing and the DRAM frequency.

Looks like Kingston made a huge mistake. Thanks for the info, setting it back to 1.40v and under, I'll see if it post and run some stability tests and let you know if it works @ 2105mhz or 1683mhz. Thanks!
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a c 347 } Memory
July 2, 2012 2:20:54 PM

Apparently they did ; again QPI/DRAM of 1.70v that's CrAzY!!!
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