1.320 V on i5 3570k for 4.5ghz normal? and another question about memory timings / frequency.

[BirdsOfWar]

So overclocking is defiantly a finicky bitch. 4.4ghz stable with a +.025V offset and .012V turbo and LLC off (level 5 on my asrock z77 extreme4, least compensation)

I tried to go to x45 but i was getting a ton of WHEA errors, temps near 90C (volts were upped to like .040V offset and a .012V turbo and i couldn't get it stable. and was afraid to go higher on volts.

so i went back to 44x and tested prime. was stable

wanted to try again so i reconfigured the memory timings and frequency and now im stable? also got LLC on level 2 but i tried that before and it still was unstable. So the only real thing i changed was the memory.


I went from 1600MHz 9/9/9/24 1CR // 2CR (tried both)
to 1300MHZ 11/11/11/28 2CR

and LLC to level 2 to reduce droop.

..but my temps are lower. Can looser memory timings cause a more stable overclock and lower temps?

1.320 V on i5 3570k for 4.5ghz normal?

because i see a ton of reports people doing much lower for 4.5ghz

build = i5 3570K
asrock z77 extreme 4
g.skill ripjaws x

 

[13thmonkey]

yes, mem control is on die, so yes.

 

[BirdsOfWar]

what do you mean, sorry . Mem control is on die?

and thanks!

 

[BirdsOfWar]

Computers using Intel microprocessors have traditionally had a memory controller implemented on their motherboard's northbridge, but many modern microprocessors, such as DEC/Compaq's Alpha 21364, AMD's Athlon 64 and Opteron processors, IBM's POWER5, Sun Microsystems's UltraSPARC T1, and more recently Intel's Core i7 and Core i5 Cpu's have an integrated memory controller (IMC) on the microprocessor in order to reduce memory latency. While this has the potential to increase the system's performance, it locks the microprocessor to a specific type (or types) of memory, forcing a redesign in order to support newer memory technologies.

 

[BirdsOfWar]

you would think they would add this to some of the overclocking guides out there, so far none that I've read talk about memory timings. Strange. And I've done some benchmarks only a little bit off when using the new setting. Ill have to record the data to get real results to make more sense of this.

What part is making my overclock more stable. the timings? command rate? frequency?

 

[BirdsOfWar]

No....in the ole days with BCLK overclocking you needed faster RAM because you were OC'ing the CPU by speeding up the entire system bus and RAM speed went up w/ CPU speed. Now we have a CPU multiplier separate from bus speed and the RAM is not tied to CPU multiplier.

However with the memory controller on the CPU, your OC can be negatively impacted by higher RAM speeds .... for example, your CPU may not be able to say hit 4.6 Ghz and 2666 Mhz speed .... maybe ya get 4.5 and 2400 or 4.6 and 2666. JJ has a bynch of Asus videos on youtube which address the issue in some detail