Question My Ram is stuck on 667MHz and i bought a 1600MHz one

[Harrriii_24]

Im currently running an

AMD fx-6300
RX 6600 (ikr)
ASUS m5a97 r2.0
2 stick DDR3 16gb ram 1600

somehow it only reads 667 mhz in task manager. in the bios there are only these options available (DDR3 - 864MHz, 1151mhz, 1439mhz, 1728mhz, 2015mhz, 2303mhz, 2592Mhz) rn im currently using 1439mhz. is there any fix for this or am i just cursed with a low memory speed?

 

[COLGeek]

You double the speed to determine its rated speed. In your case, the system is running at 2x667= ~1333. That is default speed for DDR3.

Not all memory will run at rated speeds in all systems. What is the actual/full model of the memory you are trying to use?

Set your DRAM O.C. Profile to 1600. Leave all other memory settings in AUTO/Default.

If not sure, reset the motherboard to its default settings and then tweak as above.

https://dlcdnets.asus.com/pub/ASUS/...97_R20_Manual_web_hi-res.pdf?model=M5A97 R2.0

 

[Harrriii_24]

not sure but its a corsair vengeance 1600Mhz ddr3

it just said OC tuner ok/cancel. i read the description on the frequencies mentioned abt and it said it forces the ram to run slower therefore it having odd numbers. other than that there isnt an option that makes my ram’s frequency at 1600

 

[COLGeek]

Have you reset the BIOS to its default settings?

 

[Harrriii_24]

yea i did and it actually went lower to 500 something

 

[COLGeek]

Have you changed any of the memory settings in your BIOS? Or any other settings, for that matter?

 

[Misgar]

in the bios there are only these options available (DDR3 - 864MHz, 1151mhz, 1439mhz, 1728mhz, 2015mhz, 2303mhz, 2592Mhz)

It's possible your BIOS is reporting the values stored the the SPD (Serial Prescence Detect) chip found on each of your DIMMs, instead of more common values such as 1066MT/s, 1333MT/s, 1600MT/s, 1866MT/s, 2133MT/s, etc.

Your FX-6300 is rated up to 1866MT/s (see link below) so you stand a good chance of running 1600MT/s (true memory clock speed = 800MHz).
https://www.techpowerup.com/cpu-specs/fx-6300.c1210

AIDA64 reports the following speeds in SPD for my Crucial DDR3 RAM

444MHz (888MT/s) 5-5-5-13
533MHz (1066MT/s) 6-6-6-16
622MHz (1244MT/s) 7-7-7-19
711MHz (1422MT/s) 8-8-8-22
800MHz (1600MT/s) 9-9-9-24

Only 533MHz (1066MT/s) and 800MHz (1600MT/s) align with "standard" BIOS settings. 1333MT/s (666MHz) is missing. As you may have spotted, my RAM is only specified up to 1600MT/s so there are no values for higher speeds such as 1866MT/s.

If your RAM is similarly limited to 1600MT/s, I'm not sure why your BIOS is offering 1728, 2015, 2303 and 2592MT/s, unless it is optimistic your CPU and RAM can (potentially) be clocked faster than the manufacturer's spec (1600MT/s for your RAM and 1866MT/s for your CPU).

I'm running my DDR3 at the 1600MT/s setting, but due to the fact my motherboard's FSB (Front Side Bus) speed is slightly lower than the 100MHz norm at 98.0MHz, the RAM is clocked at 784.4MHz instead of the expected 800MHz, at the 1600MT/s XMP setting.

My DRAM-to-FSB ratio is 24:3, i.e. the RAM runs much faster than the FSB. Since 24 divided by 3 = 8, my RAM is being clocked at eight times the Front Side Bus speed, i.e. 8 x 98.0MHz = 784MHz. Remember DDR (Double Data Rate) memory performs at an apparent speed double the true clock speed, so 784MHz clock becomes 1568MT/s, close enough to the 1600MT/s setting selected in my BIOS.

The BIOS for my Intel i7-4770K seems to differ from the BIOS for your AMD FX-6300 in that yours doesn't offer "standard" XMP speeds of 1600, 1833, 2133, etc. I cannot remember seeing any odd speed settings like your BIOS in my AMD DDR3 systems.

If your system is stable at 1439MT/s (719.5MHz) then I'd suggest trying the next speed 1728MT/s (864MHz). It's not that much higher than the 1600MT/s rating of your RAM and it's well below the 1866MT/s rating of your FX-6300.

If 1728MT/s is unstable, it'll probably make 0.5% difference in overall system performance at 1439MT/s.

I'd be inclined to download a trial copy of AIDA64 and check to see if your RAM truly is being clocked at 1439MT/s (719.5MHz) or the BIOS is mis-reporting the actual speed.
https://www.aida64.com/downloads