DDR3 RAM running at 800Mhz not 2400Mhz.

MrDavies

MrDavies

MrDavies

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5 Jun 2017
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132
Hi guys,

As the title says, really. The RAM is G.Skill Ares DDR3 2 x 8GB 2400Mhz fitted into a Gigabyte X58A-UDR3 mobo with an Intel i7 920 CPU.

I've tried to manually change the frequency in the BIOS along with enabling XMP but it won't boot, needed me to reset the CMOS before it will do so successfully. The voltage on the RAM states it should be 1.65 but my BIOS (recently flashed) only allows even numbers, but that can't be the issue...

What am I missing? Thank you.
 
The 800 referred to is actually 1600 due to double data rate. For manual settings it should be 1200 for 2400.

try 1200MHz settings in the bios at 1.6V.
 
Thanks for your response. Have only been fiddling around for a week and it's making me want to go back to the consoles already!

I'm at work but will give it a whirl when I get home. However, I do remember that you can't actually enter the number in the BIOS, it is just a multiplyer with the highest of 18.0 being sufficient for the 2400Mhz readout.
 
MrDavies said:
Thanks for your response. Have only been fiddling around for a week and it's making me want to go back to the consoles already!

I'm at work but will give it a whirl when I get home. However, I do remember that you can't actually enter the number in the BIOS, it is just a multiplyer with the highest of 18.0 being sufficient for the 2400Mhz readout.
Click to expand...

This will be due to the reference clock being 66.6MHz, 18 x 66.6 = 1198.8, actually it is 66.6 recurring therefore 1200MHz.

I would try from 12x where you are up to 18x in 1x steps. Are there any CAS settings in the bios, CAS 8 or 10 for example?
 
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