Inaccurate memory timings

[Yo Whats Up]

what is going on? cpu-z is reporting 1600 mhz ram speed as is set in bios ddr3-1600, however hwinfo is reporting 1570 mhz ??? which one is right? why are they reporting differently?



Running

 

[Martin]

What Bus Clock (BCLK) is reported by HWiNFO?

 

[Yo Whats Up]

More weird things are happening. Using prime 95 version 26.6 64 bit Small FTT test, here are the various cpu frequency readings

Task Manager


Cpu-z



HWInfo

 

[Martin]

The lower BCLK detected is the reason for difference - 98.1 * 8 = 784.8

 

[Yo Whats Up]

Ok but why is HWInfo showing lower BLCK? Why aren't you concerned your software is incorrectly reporting what it's supposed to report correctly!!!!!!!!!!

Or well, i don't know if it's incorrectly reporting it, but so far it's 2 versus 1 in the "votes" department since both task manager and cpu-z are reporting close values within 0.02 ghz while hwinfo's is very off

 

[Martin]

I'd need to see the HWiNFO Debug File to check why is there such a difference.
You might also try to restart HWiNFO to see if it will display a value closer to 100 MHz.

 

[eXePert]

Your bus value jumps to 98 (16*98=1568) and this is normal. In the BIOS settings there is an option Spread Spectrum which by disabling it you will have a stable 100 and then 16*100=1600. Similarly it affects the CPU Freq. I have exactly the same it jumps, but unfortunately in the settings of my BIOS I can not disable Spread Spectrum. So everything is displayed correctly at your place.