Corsair Vengeance Pro 2400Mhz 2x8GB not running at OC speed

Giulio_2

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Motherboard: Gigabyte Z97X-UD5H 1.0
Processor: Intel(R) Core(TM) i5-4670K CPU @ 3.40GHz
RAM: Corsair Vengeance Pro 2400 MHz 2x16Gb (CMY16GX3M2A2400C11R)

As the title says; I looked into my pc specs and noticed my ram was running by default at 1200Mhz.
Trying to bump it up in the Bios through XMP profile 1 (the only one available) proceeded to crash my system during use.

Did a test by leaving the XMP profile 1 Latencies and manually bumping the Voltage to 1.65 on the RAM and the CPU core to 1.069V, thus having the RAM run at 2400MHz as designed (attached are the stats for the test as seen on CPU-Z)
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Running Prime95 that lead to one of the 4 cores to crash after 1hr.

(Also bonus question, did a bit of research on my motherboards ram compatibily and was unable to find my specific ram in it's listing; CMD16GX3M2A2400C10 and CMD16GX3M2A2400C10R were among the compatible ones - does the 11R cause compatibility issues?)

I would like some guidance through finding a stable OC for my memory to run at it's designed speed, as I am quite new to the whole thing.

Thank you for your time and help guys.
 
Solution
you have it overclock to it max speed what happens if you lower it until there is no crash on prime 95. also use hwinfo sensor to check is temp and core speed .

Giulio_2

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Sorry I have updated the post atm with the previews, hope that's what you need.
 

Giulio_2

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I am sorry I don't understand the point you're trying to make - this set of DDR3 Corsair Vengeance pro comes as 2 sticks of 8GB is designed to run at 2400MHz - albeit that is divided by two for each stick right?

Updated the post with the readings.
 


I'm saying your RAM is running at DDR4 2400 because the Double Data Rate transfers data on both the On and OFF of 1200MHz, so it is effectively 2400MHz. But when software reads the speed it reads 1200MHz which is normal.

1Hz is one on/off cycle. But since DDR transfers data on both the ON and the OFF of one cycle, it transfers data at twice the frequency.

So in a way I was wrong. It runs at 1200MHz but in DDR it is 2400.
 

Giulio_2

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Is it? problem is that one of the cores crashes after 1hr of Torture test from Prime95.
So I guess I have to change something?