Results 1 to 5 of 5

Thread: DDR4 questions

  1. #1
    Joined
    Dec 2001
    Location
    Brookfield, WI
    Posts
    2,706

    DDR4 questions

    3600 (PC4 28800) 18-19-19-39 (1.35v)

    3000 (PC4 24000) 15-17-17-35 (1.35v)

    2133 (PC4 17000) 13-15-15-28 (1.2v)

    Questions:

    Are higher numbers (2800, 3000, 3200, 3600) factory stock or factory overclocked?

    If NOT overclocking, would higher number make the differences verses using 2133 (or 2400 @ 1.35v)?

    If installing higher numbers, would it get hotter or same? Or better question, all 1.35v would be same, yet 1.2v is little cooler since it's "lower" voltage? Again, no overclocking.

    I am looking at 2x8GB, since it's in lower $100 (vs. 2x16GB is $200).

    Plan to get 6700K (even I am not plan to overclock). I MIGHT look into other CPUs (non-K, etc). I am trying to see if I should get H170 (then of course non-K CPU) or Z170. Would Z170 run overall "faster" (even not overclocking) or "same" next to H170 with same CPU, RAM, etc.

    Years ago, we used to talk about "FSB", but not nowadays? Same for RAM timings, it doesn't matter anymore?

    Chuck

  2. #2
    Joined
    Mar 2003
    Location
    Central NJ
    Posts
    11,092

    Re: DDR4 questions

    I'm not sure about the higher memory speed ratings, which ones are going to be "stock" settings ala XMP or if you have to do anything more manually since I've never really looked into DDR4

    But IMO, based on what I've seen, most of the answer to your questions is likely to be "its negligible" or "doesn't matter". The only case where memory bandwidth really seems to matter to a CPU anymore is if you're using the on-die GPU. If you were going to rely on that, you'd want the fastest memory you could get your hands on, but otherwise it seems pretty much pointless. Heat differences between sticks running at their rated speed is probably in the noise and not worth worrying about.

    If it was me, I'd probably get faster than 2133, just because you could get reasonably priced 2133 DDR3, and if I'm getting DDR4 then I want faster just because. I wouldn't pay a lot more for it though, or if you could get more capacity for the same cost, that would probably be the better choice.


    Trust me, I do science
    My Hardware, Past and Present

  3. #3
    Joined
    Dec 2001
    Location
    Brookfield, WI
    Posts
    2,706

    Re: DDR4 questions

    Since I won't be able to afford a $500 for a 980 (or even originally looked at 970), I will be using DVI from onboard GPU. So, hopefully 16GB (2x8GB in Dual Channel) would suffice.

    My question really is this... say after build a PC (with "given" MB, CPU, PSU, etc), and then swapping just the RAMs (jumping from 3000 to 3600 to 2800), would the benchmark be different?

    It appears that H170 MBs only accept 1.2v 2133, so obvious gotta have to buy a Z170? Right?
    Last edited by CNT; 03-14-2016 at 02:45 PM.

  4. #4
    Joined
    Mar 2003
    Location
    Central NJ
    Posts
    11,092

    Re: DDR4 questions

    Quote Originally Posted by CNT View Post
    My question really is this... say after build a PC (with "given" MB, CPU, PSU, etc), and then swapping just the RAMs (jumping from 3000 to 3600 to 2800), would the benchmark be different?
    Certain benchmarks, yes. Real world benchmarks? No. Unless you're talking about IGP results, then maybe.

    When you say you're looking at the onboard DVI because you can't afford a 980... what do you mean? No discreet GPU at all?


    Trust me, I do science
    My Hardware, Past and Present

  5. #5
    Joined
    Mar 2006
    Location
    Buffalo
    Age
    41
    Posts
    4,602

    Re: DDR4 questions

    Quote Originally Posted by CNT View Post

    It appears that H170 MBs only accept 1.2v 2133, so obvious gotta have to buy a Z170? Right?
    just be sure that the RAM you buy is on the HCL for the mobo



Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •