Memory Latency...

Discussion in 'Memory' started by JCNiest5, Apr 18, 2019.

  1. JCNiest5

    JCNiest5 2[H]4U

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    Okay, right now I'm using two kits of 2x8GB EVGA SuperSC DDR4 3200 Speed with a CAS16. The memory works fine, except it's not on any of Memory QVL of any motherboard compatibility list. So far, I've only experienced one issue on an Asrock Z390 Tachai that the pair wouldn't pass XMP using slots A1 and B2, but works okay in slots A2 and B2. Weird?

    I'm out to buy some memory that is on most of (if not all) motherboard's compatibility list (like Asus, Asrock, Gigabyte, MSI, etc). Minimizes the chance of crashes or other BSODs.

    So, with all your might and power of will, please tell me why I should go for a CAS14 instead of CAS16, or vice versa. Both will be 3200, and for a hefty cost, will CAS14 be worth the extra $$ over CAS16? I'm just playing light games, third-person view kind of games, nothing like Battlefield V, Crysis, Tomb of Raider, etc...

    Will CAS14 really give me that much speed over a CAS16?

    I have set my eyes on these G.Skill CAS14 (Samsung B-die???) modules, and going for 16GB per stick (instead of 8GB.)

    Any advice? TIA!
     
  2. xp3nd4bl3

    xp3nd4bl3 2[H]4U

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    I believe anything that's 3200 CL14 is Samsung B-Die. That's definitely going to provide the most overclocking capability.

    In the real world does 3200 CL16 vs 3200 CL14 matter? Not that I can observe beyond synthetic benchmarks. Not even if you were playing those big AAA games that you mentioned.

    I'd love to see somebody provide evidence to the contrary.
     
  3. dasa

    dasa Limp Gawd

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    B die can oc to around 4000c17 at which point it can make as much difference as overclocking the CPU but if you don't need extra CPU performance then it won't make a noticeable difference.
     
  4. JCNiest5

    JCNiest5 2[H]4U

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    So in other words, spend about $389.99 for a 64GB (4x16GB) CAS16 is better than spending $599.98 for the same size in CAS14. Save the $210 for an SSD or other goodies. Does that sound about right?
     
  5. dasa

    dasa Limp Gawd

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    64GB of RAM wont make any difference to game performance vs 16GB hell in a lot of games 16GB wont make any difference over 8GB provided you keep background processes trim so I guess you have other uses for the extra RAM.
     
  6. GoldenTiger

    GoldenTiger [H]ard as it Gets

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    Yes. As covered above, there is no practical difference.
     
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  7. Armenius

    Armenius I Drive Myself to the [H]ospital

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    You need to be putting the modules in numbered slot pairs for dual channel according to the manual. That means using A2 + B2.

    upload_2019-4-24_16-26-7.png

    Latency for 3200 CAS16 is 10ns while CAS14 is 8.75ns. While technically better you won't notice the difference when just gaming. You will get more out of a higher transfer speed than you will a lower latency.
     
  8. daglesj

    daglesj [H]ardness Supreme

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    All I do is make sure it runs 1T rather then 2T and leave it at that.

    If the reviews showing that going from 3000 to 4000+ speeds equates to maybe one to two extra FPS then going from CAS16 to 15 or 14 aint gonna do much.
     
  9. Ruiner

    Ruiner 2[H]4U

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    Thread side-jack: Shopping for so-dimms for 200ge AM4 budget rig. crucial vanilla 3200 CL22 vs Ballistix 2666 CL16, the former costing ~10% more.
    wtd?
     
  10. pitingres

    pitingres [H]Lite

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    Depends on what you're doing with it. Email / office stuff / spreadsheets / youtube, get the cheap stuff. Low end gaming or anything that's going to stretch the APU, get the faster stuff.
     
  11. Ruiner

    Ruiner 2[H]4U

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    Light gaming. I'd normally default to the 3200 but that CL is awfully high by comparison.

    Moot point anyway, as I went with a new Micron macbook pull off ebay for half the price of these. One user reported hitting 3200 at 1.35v with decent timings.