Z170 RAM: Speed vs. Latency?

aggielaw

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Apr 13, 2009
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Hi all. I'm buying parts for a new i7 6700k build, but DDR4 pricing is giving me a headache. What I think I know is all Z170 DDR4 RAM is 2166, and the difference in the advertised speed is what the RAM will stably overclock to. Lower latency appears to drive the price up a small amount.

So I have three examples here of somewhat different options:

- a G.Skill PC4 24000 set: http://

- a Corsair Dominator Platinum set, with higher timing ratings, only XMP overclocks to 2666, and requires 4 DIMMS instead of two, yet is much more expensive: http://

- Mushkin RAM, which doesn't state it will XMP overclock at all: http://

So, a few questions:

1. I think I'm going to pre-order the EKWB Predator 360 just to see what the i7 6700k will do. It's probably ridiculous for me to spend this money for ~800Mhz overclock of the CPU, but oh well. That said, if I decide to manually overclock instead of using XMP, how much do speed ratings and latency matter?

2. If I were to be talked out of the EKWB altogether and bought a decent air cooler instead, intending to only XMP overclock, how important would the speed ratings and latency be then? I assume more important than manually overclocking, but I don't know for sure.

3. Why the heck is the Corsair Platinum series so much more expensive than other manufacturer's products that, on paper, appear similar or superior? (I should note that, although I haven't built a computer in 5 years, all three computers I built between 2008-2010 have Corsair Dominator RAM in them, so I'm not trying to pick on Corsair here.)

Finally, for a "prosumer" computer that will be used for audio and video encoding, editing, and conversion; gaming (StarCraft II); and Microsoft Office activities, should either speed rating or latency be markedly more important to me than the other?

Many thanks for your advice!

HC



 
Solution
I'd go with the GSkill, I grabbed this set for my Hero - 6600K while waiting for the release of the Trident Z sets, and the RJ V are great sticks (might also look at the Trident Z which are a little stronger, (got the 32GB 3200 set).

With a 6700K setup should be nothing more than enabling XMP in BIOS.

Data rate, 3000 and timings are good, you want to look for a combo of high data rate and low CL which the Ripjaws V fit on both ends.

OCing would be the same whether you let XMP set up to 3000 or you did it manually - XMP is easier, especially if not familiar with OCing DRAM as you will need to also adjust secondary and sometimes tertiary timings which many aren't even familiar with

Platinum is Corsairs 'top of the line' so you pay...
I'd go with the GSkill, I grabbed this set for my Hero - 6600K while waiting for the release of the Trident Z sets, and the RJ V are great sticks (might also look at the Trident Z which are a little stronger, (got the 32GB 3200 set).

With a 6700K setup should be nothing more than enabling XMP in BIOS.

Data rate, 3000 and timings are good, you want to look for a combo of high data rate and low CL which the Ripjaws V fit on both ends.

OCing would be the same whether you let XMP set up to 3000 or you did it manually - XMP is easier, especially if not familiar with OCing DRAM as you will need to also adjust secondary and sometimes tertiary timings which many aren't even familiar with

Platinum is Corsairs 'top of the line' so you pay extra for that, for the diminutive LED light bar, as well as a premium just for the Corsair name... In the past I've found GSkill's top of the line Tridents (the X sewries for 1150 and 1155mobos in DDR3) and now the Trident Z sticks in DDR4 to be stronger and more OC headroom than the Dominators when head to head in same data rate/CL combos.
 
Solution


Excellent advice that I've used twice now. Thanks Tradesman1! :)
 


Ah, I didn't realize this would bump the thread up. The thread dates to when Skylake debuted - I was simply thanking Tradesman1 for his help as the forum suggest I do in my PMs. Sorry for the confusion!