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Any references to what I might realistically gain by tweaking the RAM?

I've been overclocking CPU's since the Celeron days: messed around with memeory tweaking once BIOS's started offering it, but found it had very diminishing returns outside of bragging rights..
But of course, bragging rights are what we are dealing with here.

This is the RAM I am using.

GeIL 16GB (4 x 4GB) DDR4 2666 (PC4-21300)

Default timings are: 15-15-15-35 1.2v


Would trying to bump the basic clock, say to 2800, be the first place to start?
 
With DDR4 I have NO clue. But I have seen differences in my Cinebench scores that clockspeed does not account for, and I attribute it to RAM timings.

It would seem reasonable to keep it simple by bumping the speed. I don't know if these new boards offer XMP profiles in the BIOS.
 
Good news & bad news...

Bad news - I tried bumping volts to 1.3 and speed to 2800, and could not post ..

Good news - Went wandering around in the DRAM settings, and although it looked like the XMP value of 2666 was in place, another setting said the DRAM was at 2133. I manually changed it to 2666 and my score jumped to 19.34..

I guess you need a screen shot to make it official.. I'll get around to it later...
 
Hit 5.0GHz in my unheated work area this evening... stable and cool as a cucumber:

dpbk2p.png


Passes Linpack at this setting right now too, doing around 136GFlops.
 
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Thanks, I felt pretty good about it. I am wondering if I could even push the voltage down a bit more, I just guesstimated 1.38V and went for it. Been using this way right now as my "24-7" setting, seems rock stable. Best damn chip I've ever owned, finally removes my regret at selling the 2700K.
 
Scholzpdx said:
How much of your life did you waste by waiting for that system to boot up?
Click to expand...

The Samsung N145 boot in 25 seconds post bios and 20 seconds without wifi , it has got an ssd inside , And the 875i boot xp in 12 seconds post bios with ssd . and windows 7 it is 11 seconds 🙂
 
crashtech said:
Hit 5.0GHz in my unheated work area this evening... stable and cool as a cucumber:

Passes Linpack at this setting right now too, doing around 136GFlops.
Click to expand...


Oced Haswell + Linpack + score less than 200Gflops = old version of Linpack

You should be hitting nearly 250Gflops @ 5Ghz at much higher heat and instability. Old Linpack has no AVX2/FMA support.


P.S. Word of warning, the amount of wattage/heat delta is scary, start testing from less to be on the safe side 🙂
 
Thanks for the info. I think the new version is scary. As it is, the old version loads my machine down more than any real life app ever has.
 
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