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OK, need some tried and tested memory o/c figures

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2DividedbyZero

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I have 3x2Gb Corsair Dominator GT 1600MHz memory rated at 1600-6-6-6-20-41-2T 1.65V

I currently run it at 1600-6-6-6-18-48-1T 1.65V

does anyone have some figures and mobo voltages to get some more speed out of this memory, for testing purposes I have my bclk currently at 200MHz and CPU multi at 21 = 4.2GHz 1.275V

I was wonderin if having a faster mem speed would give me overall increase in performance or is 1600 plenty for todays gaming climate?



 
erocker

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1800mhz cas7 or 2000mhz cas8 should be easily obtainable with those sticks. Very nice RAM.
 
cadaveca

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Yes, increasing the frequency will give a performance boost.

If you can get 1800 CAS6 with 1.65v(some kits will do this, but they aren't common), you'd be in the best situation.

Also look @ 2200mhz 9-9-9-27. ;) all should work with 1.65v(each kit varies, of course).


If you would like specific timings, please post bios screenshots with all available memory settings, and I'll see what I can do for ya.

Technically, these are the same "bin" as 2000C8 GT's, which I have.
 
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2DividedbyZero

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ok, here are some snaps from my BIOS (I'm not gonna apologize for the quality of them!)









 
JrRacinFan

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Nope keep your 2Ghz settings BUT see if you can touch up your QPI to 8000MT/s. That would then make your system FLY!
 
LAN_deRf_HA

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I think you need to manually set your B2B to 4, otherwise I think it get's loosened as you increase speeds, so you don't really benefit. Personally I've found raw speed and a 2:1 uncore ratio to be highly inefficient. Lower speed, lower timings, higher uncore ratio for a smoother experience. See if you can hit cas 5 at 1600 and then up your uncore to 3.6-4.0.
 
cadaveca

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LAN_deRf_HA said:
I think you need to manually set your B2B to 4, otherwise I think it get's loosened as you increase speeds, so you don't really benefit. Personally I've found raw speed and a 2:1 uncore ratio to be highly inefficient. Lower speed, lower timings, higher uncore ratio for a smoother experience. See if you can hit cas 5 at 1600 and then up your uncore to 3.6-4.0.
Click to expand...

Those sticks will do CAS5, you bet, but at volts that might kill them(2.0v). Otherwise, i agree. But in the end, it might make more sense to run 2000 and high uncore. MIght even get 7-8-7, which might prove faster than 1600 CAS6.
 
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2DividedbyZero

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hi

I have tried faster mem speeds but show no increase in speed in everest, I have however noticed that if i stay at 1600 and increase uncore (currently 3200) to say 3800, then the speeds increase quite a bit

problem: i have random crashes which i can only relate to uncore being raised to 3800, it is stable at 3400. What bios setting do I need to change to increase stability on the uncore (voltage wise)?
 
cadaveca

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As far as I know, keeping uncore twice ram is kinda key. Hence the suggestion to go to 2000 with 4000 uncore. Decide what ram speed you like, and I'll "fill out" the secondary timings for ya.

I'm stil lrelatively new to Intel, so I'll let others fill you in on voltages.
 
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2DividedbyZero

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cheers cadaveca, i will stick to 1600MHz for now with the uncore stable at 3800 @ 1.45v, seems to work pretty good.

i read the the max recommended by intel for QPI/DRAM voltage was 1.35 so if I oc the ram to 2000 and try 4000 uncore, it will be way over volts!!!! is this still valid info from intel and QPI voltage?

 
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2DividedbyZero

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quite happy with my vantage score: P34674 for 24/7 clocks (see system specs on left)

 
cadaveca

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Seems good to me! I don't think i need to give you secondaries...they won't amount to much more performance, and if it's stable, why muck around with it?

I'd love a 4.4ghz hexacore.:laugh:
 
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