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Can My RAM sync at 2000 mhz with 200 bclk? - Page 2

post #11 of 16
Quote:
Originally Posted by Cyclops View Post
No 1866 option. bclk is set to 200 so it goes 1200 to 1600 to 2000 to 2400. My hands are tied.
Those are your RAM multipliers, 6x 8x 10x 12x.

If you are testing for a RAM OC you should play with Bclk so you get more precision. You won't learn much about your RAM's max OC by keeping Bclk fixed at 200 and jumping the RAM multis.

And as was said VTT needs to be within .5V of DRAM voltage.
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post #12 of 16
Thread Starter 
Quote:
Originally Posted by KILLER_K View Post
What are you doing synthetic benchmarks? As that will be mostly where you will see any difference from going from 1600 to 2000. There are some ram intense applications that it will make a difference in also. But i'm just not sure what you are trying to do.

As mentioned i seen qpi voltage up to 1.7v easily on 2,000mhz kits on a 920. Same kit going to a 980x i seen it drop to 1.4v. So just depends on how good of a imc you got to begin with.
Not really. It's just overclocking you know. Pushing what's possible to the next level.

Quote:
Originally Posted by wumpus View Post
Pshhh you guys clearly dont know what these 45nm chips can take....1.5v VTT is fine, and so is over 2v on the memory (at least for the CPU) Just dont forget to make sure they are within 0.5v of each other or it WILL die. even if you had VTT at 1.1v and RAM at 1.65v it would kill your chip.

Some XMP profiles on ram even set the VTT as high as 1.7v!

OP: 1.45v+ on IMC is fine and DDR3 Ram is usually alright up to ~1.8v
Thanks. I'll keep that in mind when I start to overclock it. How did that motherboard work out for you by the way?
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post #13 of 16
Thread Starter 
Quote:
Originally Posted by djk11 View Post
Those are your RAM multipliers, 6x 8x 10x 12x.

If you are testing for a RAM OC you should play with Bclk so you get more precision. You won't learn much about your RAM's max OC by keeping Bclk fixed at 200 and jumping the RAM multis.

And as was said VTT needs to be within .5V of DRAM voltage.
I know that. My overclock is at 4.2 ghz (200 * 21). I'm not going to drop the CPU frequency for RAM frequency. I can do (175 * 24) to get the same overclock but the ram will be so far off the 1600 Mhz target that it won't be worth it. Plus 200 looks solid and nice .
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post #14 of 16
Quote:
Originally Posted by Cyclops View Post
Thing is that Intel says that going over 1.65v for memory may damage the CPU.
Pssshhh, I'm running DRAM voltage at 1.67 to get my memory at 2133 with tighter timings, hasn't killed it yet.
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post #15 of 16
Intel's recommended max VTT is 1.35V, but on LHe you could of course run it at 2.2V!

I'd see how far the RAM clocks will go with 1.35V VTT and 1.7V DRAMv, ie conservative voltages. Redlines should hit 2000MHz without going too nuts on voltage, but timings will probably need to be CL9 or worse, so its a trade off. I guess find what voltages you need for 2000MHz then see if higher clocks or tighter timings bench better for you.
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post #16 of 16
Thread Starter 
Manged to get the RAM stable @ 2000 Mhz with 1.4875 QPI and 1.75 Vram and with 10-10-10-28 timings. I'll be working on lowering the timings and the RAM voltage.
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9 * Corsair SP120 Quiet Edition @ 7V 8.1 Pro 12-bit Asus VG27HE 27" 1080p @ 145Hz Corsair Vengeance K60 
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CPUMotherboardGraphicsRAM
4770K @ 4.7 GHz 1.39V Maximus VI Gene MSI GTX 1070 Seahawk EK X @ 2.1/9.0 Ghz 16GB G.Skill Sniper 2600 MHz 11-14-14-14-2T 1.65V 
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