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Precision 7730,5530,7530 (Coffee Lake) pre-release

Discussion in 'Dell Latitude, Vostro, and Precision' started by sench, Sep 25, 2017.

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  1. SvenC

    SvenC Notebook Evangelist

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    ETA 6/28. more m.2 and RAM already waiting to be plugged into the 7730
     
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  2. sench

    sench Notebook Enthusiast

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    What did you go for? I'm thinking 1TB 970 Pro + kingston hyperx (dual channel)
     
  3. Aaron44126

    Aaron44126 Notebook Prophet

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    We should make an owner's thread for this instead of continuing to use this one. (Whoever gets theirs and is ready to post impressions first can do it :p)
    I was wondering what others think, but I think that it makes sense to have just one thread for both 7530 and 7730 because the systems are so similar. And also these threads seem a bit less busy than they used to be... I don't think there ever was a 7520 thread.
     
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  4. olsonnet

    olsonnet Notebook Enthusiast

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    Agreed about an owners thread for just 7730/7530. Not much in common with the 5530.

    Waiting to order my 7730. Just waiting for one of the cashback sites to offer at least 10% back to combine with the Amex Offers 10% back for a decent discount.
     
  5. SvenC

    SvenC Notebook Evangelist

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    2x 2TB 970 EVO - can't have enough storage for VMs and a few Visual Studios versions
    2x 16GB Ballistix Sport LT - hope CL 16 will work

    7730 just spotted in Netherlands - not too far any more ;-)
     
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  6. anuraj1

    anuraj1 Notebook Enthusiast

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    CL16 sounds nice. The lowest CAS latency I could find in 3200Mhz RAM is CL20.
     
  7. Aaron44126

    Aaron44126 Notebook Prophet

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    Comparing 3200MHz CL vs 2400MHz CL...

    CAS latency is a measure of the amount of time that it takes the memory module to answer a request. Except, it is not reported in terms of time, but in terms of clock cycles. Clock cycles get shorter as the RAM speed goes up (in terms of "MHz"), so you will always see higher CAS latency values for "faster" MHz memory, and that doesn't necessarily mean they are worse. You can only directly compare CAS latency between modules at the same clock speed, not between two different clock speeds.

    Do some math and you will find at CL20 at 3200MHz is actually a hair faster than CL16 at 2400MHz.
    (response time = CL / clock rate, lower is better)

    (The memory in my M6700 is CL9, is that awesome or what? :p)
     
    Last edited: Jun 25, 2018
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  8. anuraj1

    anuraj1 Notebook Enthusiast

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    I understand the concept, but I've always wondered what the trade-off point was. Anyone know of a calculator online that can do something like this?
     
  9. Aaron44126

    Aaron44126 Notebook Prophet

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    I edited the post above as you were posting. It's just a formula.

    response time = CL / clock rate, lower is better

    Note this isn't the "real" response time because memory actually runs at half of the advertised frequency (DDR marketing) but it is valid for the sake of comparing two modules that run at different speeds.
     
    Last edited: Jun 25, 2018
  10. tokatoka

    tokatoka Notebook Enthusiast

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    Got a new 1TB 970 Pro and 4x16GB Hyperx 3200 Mhz, plus my current 2TB 960 Pro

    I am getting my laptop, 7530, tomorrow morning.
     
    Last edited by a moderator: Jun 25, 2018
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