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Samsung 2x4Gb Low Voltage DDR3 1600 kit (OCing to 2400+) Discussion - Page 110

post #1091 of 1840
8/20/12 at 1:41pm
I'm running 4x4GB of these sticks. I can't get 2133 MHz 10-10-10-28 @ 1.5 V stable. I tried raising VCC to 1.1 V but that didn't help; I haven't messed with VTT yet since I haven't done any reading on what values are safe. Processor is overclocked to 4.2 GHz @ 1.25 V (1.24 V idle, 1.23 V loaded) and passed 24 hours of small FFTs.

Can anyone help me out?
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post #1092 of 1840
8/20/12 at 6:52pm
That's strange ^

I had no problem setting mine to 9-10-10-28 @ 1.5V. Is it because stn0092's CPU is overclocked?
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post #1093 of 1840
8/20/12 at 7:06pm
Quote:
Originally Posted by chizel View Post

I was having trouble with 2133MHz too. I read earlier on that, I think Schmuckley was saying to raise the VCCSA to 1.1. I didn't touch the VTT, but changing the VCCSA worked for me, 2133MHz, 9-10-10-27 (miss typed it and have just left it), 1T @ 1.5v. It's work for me for both 8GB and 16GB. Give it a try! Hope it works, it's pretty gratifying when it does thumb.gif

I'll try it out when I get home from work thanks. thumb.gif
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post #1094 of 1840
8/20/12 at 9:06pm
Quote:
Originally Posted by Roboionator View Post

everything is in stock cl11, you asking for all latency?

Try 11-11-11-28 2t

Also try setting the twcl to 9, I think that is what its called. I am posting from my phone so I can't look it up.
Edited by Hotrodsun - 8/21/12 at 8:25am
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post #1095 of 1840
8/20/12 at 9:12pm
Ah, I wanna try my green ram with my new 3770k so bad!
Gotta wait for my Silver Arrow to arrive here though, I sold my former Mux-120 cooler.

What's the average you Ivy guys are hitting with them?
I've seen 2666mhz on air, but at 1.7v, not sure if I want to pump those volts thru them. yikes!
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post #1096 of 1840
8/20/12 at 11:18pm
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Quote:
Originally Posted by Warrior1986 View Post

That's strange ^
I had no problem setting mine to 9-10-10-28 @ 1.5V. Is it because stn0092's CPU is overclocked?

No, my cpu was overclocked but I could run these sticks fine at 2133mhz with CL9. Its more than likely due to fact hes using 16Gb as apposed to 8. More stress on the IMC.
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post #1097 of 1840
8/20/12 at 11:29pm
Quote:
Originally Posted by Warrior1986 View Post

That's strange ^
I had no problem setting mine to 9-10-10-28 @ 1.5V. Is it because stn0092's CPU is overclocked?
Quote:
Originally Posted by $ilent View Post

No, my cpu was overclocked but I could run these sticks fine at 2133mhz with CL9. Its more than likely due to fact hes using 16Gb as apposed to 8. More stress on the IMC.

Well, I'm running them at 1866 MHz 9-10-10-24-84 @ 1.5V right now and passed Prime for three hours. I can be content with that.
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post #1098 of 1840
8/21/12 at 12:23am
Hmm. VCCSA shouldn't be touched as that is what controls the voltage of a lot of the components of your motherboard (USB, Sata, etc). VTT is the voltage for the IMC, so you should be raising that instead of VCCSA.

With my VTT at 1.1v, 2133mhz 9-10-10-28-1T @ 1.55v did not work, but 2000mhz works, so I will just stick with that.
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post #1099 of 1840
8/21/12 at 12:50am
Quote:
Originally Posted by Kokin View Post

Hmm. VCCSA shouldn't be touched as that is what controls the voltage of a lot of the components of your motherboard (USB, Sata, etc). VTT is the voltage for the IMC, so you should be raising that instead of VCCSA.
With my VTT at 1.1v, 2133mhz 9-10-10-28-1T @ 1.55v did not work, but 2000mhz works, so I will just stick with that.
Where did you find that information? From my reading of the SB-E OC guide, VCCSA handles the System Agent/IMC and VTT handles the QPI which connects the I/O components you mentioned.

I'm not questioning your results from raising VTT; I just want to be safe and avoid damaging some expensive SSDs. smile.gif
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post #1100 of 1840
8/21/12 at 1:04am
On my Z77 VCCSA is what controls both VCCSA and VCCIO voltages in a sense that VCCIO = VCCSA + ~0.1v.

But I don't know that for sure. Just heard it somewhere.. BIOS manual says that VCCSA option is for VCCIO so i'm like... wut?

But ehm, I got the 1333 version, which I assume is the same as this RAM? Default being 1333 9-9-9-24 1.35v.

2133Mhz is easy to do, however, timings won't go any tighter then 9-11-11-24-1T. I'd love to make 10's from those 11's but it's very unstable if I change either one of them. Anyone got some advice? I'm getting a new CPU (5.2Ghz 2500k) this week so I wanna know what to watch.

I now run VDIMM at 1.5125v, VCCSA at 1.000v giving 1.11v VCCIO, speed at 2134Mhz, timings at 9-11-11-24-1T.
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