Issues with DDR3 2400 MHz functioning at 2400 MHz
Issues with DDR3 2400 MHz functioning at 2400 MHz
my (4x8GB) DDR3 Corsair vengeance Pro ram is only running at 1200 MHz, just half of what it should be. I tried some tutorials about fixing the problem, but none helped. I followed a guide that suggested raising the voltage to 1.65V and adjusting the frequency to 2400 MHz in bios. That change definitely improved things from 800 to 1200 MHz. Are there other possible solutions I should consider?
Welcome to the Forums.
The correct speed is 1200, not the right direction—you've reached your goal.
Dual Data Rate: 1200 x dual data rate equals 2400.
DDR3 at 1600 runs at 800, DDR4 at 4200 runs at 2100.
Regardless of what you do, you can never achieve a double clock on the RAM; you're trying to push it to 4800, but it physically can't do that.
Cpu-Z has begun relying on Data rate over Dual settings, and it seems Windows 10 made a switch from Dual to Data rate a few months ago. Now, everything runs at the right speeds, though it might seem unusual and prompt you to reconsider the Dual setting. Many users haven't noticed these changes in Windows either, so you're not alone in this observation.
The simplest method to determine the RAM speed is through Task Manager. You might get a reading around 2400 MHz, but if you have 3800 MHz RAM, it's possible. CPU-z displays the single data rate frequency, which appears to be 1900 MHz.