Memory for skylake

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TheG0at

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Apr 6, 2012
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I just ordered Corsair Dominator 16gb (2x8) at 2666mhz and I'm wondering if the 3000mhz would make a difference with the new 6700k as far as gaming goes?

Should I stick with the 2666mhz or move up to the 3000mhz?
 
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wildfire707

wildfire707

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As with any memory, it is the speed and latency combined that makes the difference.

Personally, I recommend sticking with 2666 Mhz for most people. It is noticeably faster than the official 2133 Mhz memory and does not suffer from much higher latency. As the DDR4 memory output improves and it becomes more refined, I would expect 3200 Mhz to be my next favorite one.
 
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TheG0at

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Now they have the 3000 Mhz for $10 cheaper then the 2666 Mhz. Might have to switch to the 3000 Mhz just because. Plus I don't even have the 6700k yet, I have everything else but I cant seem to get that damn cpu.

Although if its not gonna make any difference maybe I wont.......this is what happens on every pc component I buy. lol
 
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wildfire707

wildfire707

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IDK, the only DDR4 3000 (8GB x 2) memory that I see requires 1.35 volts. Personally I run memory that you don't have to up the voltage to make it work. It is true that with Intel's XMP profiles, you don't normally have to go into the BIOS to adjust it - but I still have reservations about it.

Of course I am running my CPU with increased voltage, but not aggressively so.
 
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TheG0at

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Am I gonna see any noticeable difference in gaming with 3000 vs 2666? The 2666 Mhzz memory will be here tomorrow so if I went with the 3000 Mhz I would have to send the 2666 back which may or may not be a hassle.

Also I'm unfamiliar with the voltage on memory is the 1.35 volts gonna negatively affect anything??

 
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wildfire707

wildfire707

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The speed increase can only net you about 2% faster performance on your system given the fact that most DDR4 2666 memory is CAS15 and most DDR4 3000 memory is CAS16.

The voltage change means that those modules need additional power to run at the faster speed, and the official specification calls for 1.2 volts. They will run hotter, use a little more power, and (from my perspective) can have more stability issues as this is a new technology (DDR4) and only a few modules get tested per batch during production.

I have been bitten by this every time I have tried it - from DDR, DDR2, and DDR3. After about a year it should be fine, but for early adopters the stability percent for cutting edge memory is much lower than 99%. Of course DDR4 3000 is not much faster than DDR4 2666, so the risk is pretty low - but the additional benefit from the speed increase is also low. I have only had problems with one module of DDR4 2666, so I tend to stick with that speed.
 
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Tradesman1

Tradesman1

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As far as gaming and DRAM it depends on the game and how well it utilizes DRAM, some games show up to a 10+ % increase, others show basically none. The faster DRAM tends to shine more in things like muti-tasking, video, imaging, CAD, VMs, etc
 
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wildfire707

wildfire707

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Tradesman1 is right, I was using gaming only for my comparison. If you do CAD / CAM or other heavily multi-threaded tasks the faster speeds will perform much better. Future games will likely benefit more, but current games are what I was using for my statement.
 
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