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JamesM said:
Does this memory benefit from being under water?
Click to expand...

If you're pushing high voltages through them like 1.7v+ then yes, like all DDR3 you'll want to keep them cool past that point. Under, not so much no.
Running 1.65v through these they get warm, but nothing that will harm them unless stressing in a middle eastern environment without AC lol.
 
JamesM said:
Ok much appreciated.

Max safe voltage for Samsung Green? I've seen 1.65v been mentioned. If the DIMMS were under water could you push this further in an attempt to help overclock?
Click to expand...

The max i'm comfortable with it 1.675, but this didn't help what i was trying to achieve. Since then i've changed my settings and running much lower.
If water cooling and you're able to set the vcore and IMC voltages in the safe zone with the dram voltage, i would say 1.75v should be good to be honest.
8 Pack can confirm or deny this.
 
Relaxed mains would be 11-12-12-31 2T. Seconds 6-296-auto-16-15-30-15-6-8 down the ASUS bios which I seem to think you have. Then back all thirds to 5 clocks. This is very slack!!!

1.75v is top scaling volts for Samsung IC.
 
Having problems getting mine past 1866. Started off using the timings and voltage recommended for 2133 but it wouldn't post. Loosening the timings didn't help nor did raising the voltage (tried up 1.6v). I read that increasing the vtt may help for memory overclocking but that I shouldn't go past 1.08v - the next notch up from the default 1.076 was just over 1.08. Again no luck. Also tried all of this at 2000 and it still didn't POST. Any suggestions?

Asrock Extreme 4
3570K @ 4.4
4x4GB Samsung Green
 
Using the latest BIOS (2.7), will try and up the vtt more then.

Does 4x4GB needs a little more dram than 2x4GB for the stated (potential) speeds?
 
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xibinim said:
Using the latest BIOS (2.7), will try and up the vtt more then.

Does 4x4GB needs a little more dram than 2x4GB for the stated (potential) speeds?
Click to expand...

yes with 16gb you usiually need more dram v,i needed 1.63v with 16gb samsung green on a z68 board,but only 1.55v with 8gb

be sure to use the latest mb bios aswell as sometimes the bios isnt fully supporting this ram to get the most from it,gigabyte boards have improved theres a lot,before you could only clock to 1866mhz,
 
i've tried 2400mhz it fails to boot with 1.1 vccsa, 1.65v. cant seem to get 2200mhz stable either. do you think its possible to get tighter timmings with my 2133mhz settings?
 
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My notebook (using the sammy 30nm sodimms of course) is locked at 1.5V, i've got these timings:

HBM_zpsf5dd59e4.jpg


This is in a 4x4GB configuration.

Are there any that have more room to drop at these speeds at 1.5V in your opinion?

The 16F3 despises the 2133mhz strap so this is fast in frequency as I can get it really.
 
xibinim said:
Having problems getting mine past 1866. Started off using the timings and voltage recommended for 2133 but it wouldn't post. Loosening the timings didn't help nor did raising the voltage (tried up 1.6v). I read that increasing the vtt may help for memory overclocking but that I shouldn't go past 1.08v - the next notch up from the default 1.076 was just over 1.08. Again no luck. Also tried all of this at 2000 and it still didn't POST. Any suggestions?

Asrock Extreme 4
3570K @ 4.4
4x4GB Samsung Green
Click to expand...

Similar setup here and similar issues. 2133 was a no go really even with relaxed timings and running 2T. Had 1.65v through the RAM and just over 1,2v VTT. I could get into windows but not stable and lots of memtest errors.
Decided to play with 1866 instead and tighten the timings. Currently sitting happily at 8-9-9-24-1T which I don't think is too bad.
 
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