Question Speccy and Cpu-z mem at 667 or 669 mhz when it is actually at 1866 mhz

Dec 19, 2019
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System has an fx 8300 @ 3.3 ghz, 16gb ram, r9 390 2gb and mobo is gigabyte 970A-DSP3 with latest bios patch. I have no option in bios to activate the XMP or the AMD version. running ssd and hdd's. There are 2 dimms of hyperx fury blue of 4gb each and one hyperx fury of 8gb same specs. 1866mhz, cl10, 1.5v
Problem is, bios is showing them at 1866mhz on auto, however, if i put them manually at 1866 system wont boot. Since i have dual bios i can restore easy. Speccy and Cpu-z shows them at 667 or 669 mhz. The gigabyte system utility shows it at 1866mhz in windows. What is real and why only 667? Maybe you guys can help me, as this got me stumped

https://ibb.co/JHm2PVP

https://ibb.co/824DYf0

https://ibb.co/NtwxnND

https://ibb.co/r7q6Ydb

https://ibb.co/YTGP4NC


Thank you very much!
 

TJ Hooker

Glorious
Ambassador
And why doesnt the mobo allow for manual setting it to 1866?
Your CPU memory controller probably can't handle it. It's rated for 1866 MHz for two sticks only*. That, plus the fact you're combining two different memory kits. This can cause compatibility issues, even if the sticks have the same specs.

*According to Wikipedia anyway.
 
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Reactions: Soulstorm101
Dec 19, 2019
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Your CPU memory controller probably can't handle it. It's rated for 1866 MHz for two sticks only*. That, plus the fact you're combining two different memory kits. This can cause compatibility issues, even if the sticks have the same specs.

*According to Wikipedia anyway.
Than why does the gigabyte utility show the mem at 1866mhz? which one is correct? and it is fluctuating per idle level, so its the real one not what its chip read, methinks.

Look at the pic above
 
Dec 19, 2019
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On a better board it would PROBABLY run higher , I use to run 2133 4X4 on my ASUS 990FX Sabertooth.
Yeah but, idont really need that. At that point, the bottleneck would be the rest of the comp vs mem speed. i would just be happy with it running @1866. So why does the gigabyte utility show 1866 an cpuz only 667
 

TJ Hooker

Glorious
Ambassador
Than why does the gigabyte utility show the mem at 1866mhz? which one is correct? and it is fluctuating per idle level, so its the real one not what its chip read, methinks.

Look at the pic above
I'd trust CPU-Z over Gigabyte's utility every time.

Not sure exactly what you mean by "fluctuating per idle level", but if you mean that the mean the DRAM frequency is varying a bit that's normal.
 
Dec 19, 2019
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I'd trust CPU-Z over Gigabyte's utility every time.

Not sure exactly what you mean by "fluctuating per idle level", but if you mean that the mean the DRAM frequency is varying a bit that's normal.
Yes, kind of. Normally i'd agree with you, but..gigabyte utility on gigabyte mobo shows the freq the ram is supposed to be at...
 

TJ Hooker

Glorious
Ambassador
I'm not sure. My best guess is that just shows what the memory is set to run at, while that other shows what it's actually running at. So maybe it tries and fails to run at 1866 MHz as per the setting, then defaults down to 1333 MHz.
 

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