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Samsung 2x4Gb Low Voltage DDR3 1600 kit (OCing to 2400+) Discussion - Page 103

post #1021 of 2062
Quote:
Originally Posted by Blameless View Post

Write CAS latency (tCWL) and write latency (tWL) are related, but they are not the same timing.
tWL = tCWL + AL (additive latency)
Setting tWL to the figures mentioned in the techpower up article may result in instability. Additive latency is often 0, so this isn't always the case.
Personally, I can't get tWL of less than 8 to be stable regardless of what CAS latency I use at DDR3-1600+ on my Gulftown with two DIMMs per channel.

Yeah, I've got it on Auto.. I was tweaking with it before and yeah. Not stable at all..
Seems like I can't change this in my BIOS... Oh well 1866 9-9-9-24 will have to do.
2000MHz won't be stable anymore. It just randomly crashes, I'll try for more later I suppose.
Quote:
Originally Posted by moonshine6456 View Post

just ordered my 4 sticks of this! biggrin.gif
are there any guides to overclocking ram? I have never touched it before thumb.gif

Not really, all I can say is start off by setting your timings at 9-9-9-24 and run the sticks at 1.5v, work your way up from there! biggrin.gif
I had no idea, and that's exactly what I did, if you look at where i'm at now doing that was a pretty good guess of how far my sticks can go! wink.gif
 
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post #1022 of 2062
got my set in last night, very impressed. I mainly bought it for some extra clearance for my phanteks fan, and to start tinkering with overclocking ram as I've never attempted it before. right out of the box I set them to 1866 and they are running awesome. I plan on doing some research and seeing how far I can push them. thumb.gif
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post #1023 of 2062
I'm having some bad luck with mine...I started tweaking my ram timings again and my Win7 install won't boot (or at least it won't show any picture on screen, just black...) I get past the loading Windows something screen, and then all goes black.
Cleared cmos, and nothing. I get into the bios and past the post, but after that zilch.
Last time that happened, I was having constant bootloops, and it'd eventually boot into Windows with optimized default settings, but after getting into the bios manually the bootloops started again.
Had to reinstall Windows and clear the cmos to get it to work fine again.
Any clues? Bad ram/mobo?
post #1024 of 2062
Personal opinion: always test a DRAM OC setting with Memtest86+ on a USB boot stick before trying to actually boot Windows. Also, I recommend trying settings with 1 stick of RAM before trying with 2.
post #1025 of 2062
Installed RAM
set TRFC to 147

set voltage to 1.45v and clock to 2133

and it was 12 hours prime95 blend stable.

easiest Ram I've ever worked with
    
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post #1026 of 2062
Quote:
Originally Posted by ti20n View Post

Personal opinion: always test a DRAM OC setting with Memtest86+ on a USB boot stick before trying to actually boot Windows. Also, I recommend trying settings with 1 stick of RAM before trying with 2.

Yeah, I should've...
I just got a gift at work lol, a 4gb usb thumbdrive, so I'll give that a try.
post #1027 of 2062
Hmm i got passed memtest with 2133mhz 11-11-11-30 at 1.545v with tRFC at 173 :/
Not bad I suppose, tried lower timings but no bueno ):, should i try lowing the voltage along with it?
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post #1028 of 2062
Quote:
Originally Posted by Shadowkillerdragon View Post

Hmm i got passed memtest with 2133mhz 11-11-11-30 at 1.545v with tRFC at 173 :/
Not bad I suppose, tried lower timings but no bueno ):, should i try lowing the voltage along with it?

Yes you should, though I'd suggest trying say 2000MHz with tighter timings.. Especially that last one.
 
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post #1029 of 2062
Quote:
Originally Posted by Matt-Matt View Post

Yes you should, though I'd suggest trying say 2000MHz with tighter timings.. Especially that last one.
sad thing is my asrock board only has 1866 and 2133 nothing in between xD. Guess I'll try some more settings tommorow getting late
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post #1030 of 2062
Quote:
Originally Posted by Shadowkillerdragon View Post

sad thing is my asrock board only has 1866 and 2133 nothing in between xD. Guess I'll try some more settings tommorow getting late

In that case I'd go for 1866, seems to be where the most gains are for Sandy/Ivy bridge processors, then better timings create more of an increase again! thumb.gif
But yes, that's the scenario i'm in at the moment! Just got to sit with what i've set. I've got too much happening + my PC is doing updates atm
 
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