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32GB RAM (16GB x 2) now available for Precision 5510 (i7 and Xeon)

Discussion in 'Dell Latitude, Vostro, and Precision' started by Billy Cantor, Dec 3, 2015.

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  1. jonnywaffles11

    jonnywaffles11 Newbie

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    where did you buy from or could you provide the model number from hnyix? I'm impatient and would like to have the ram swapped out when the unit arrives. Thanks!
     
  2. luch

    luch Notebook Guru

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    I just bought the regular one
     
  3. jirving75

    jirving75 Newbie

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  4. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    The RAM should include a chip with different timing options (called the SPD data) and the BIOS reads this and chooses the fastest speed which it thinks will work. You can run CPU-z to see this for your current RAM.

    The lower the CL number then the faster the memory access at a given RAM speed. However, 2133MHz CL15 and 2400MHz CL17 are likely to be about the same physical time. You will probably find that 2400MHz CL17 RAM has a 2133MHz CL15 timing.

    John
     
  5. HVR1

    HVR1 Newbie

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    Hello,

    Would RAM with timings of CL15 and speeds of 2666MHZ work well with the Dell Precision 5510? Would it be worth the extra price over the CL15 2133MHZ RAM? I am planning to upgrade to a 32gb kit.

    Thank you
     
  6. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    Which CPU do you have? The Xeon CPU is advertised to support 2400MHz RAM whereas the i5 and i7 CPUs are limited to 2133MHz. The BIOS will look at the SPD timings built into the RAM modules to look for the fastest speed that is supported by the hardware. If you are lucky the 2666MHz modules will have settings for 2400Mhz and 2133Mhz which might be CL14 and CL13 respectively. Or they might not be as fast or there might even be no settings compatible with the computer (unlikely but not unknown).

    I would suggest that you trawl through the threads about the XPS15 9550 to see what RAM those owners have tried and how it has performed.

    John
     
  7. HVR1

    HVR1 Newbie

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    I have the Core i7 CPU. Will trawl thru the XPS threads.
    Thank you :)
     
  8. _sem_

    _sem_ Notebook Deity

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    If you browse Userbenchmark results for the XPS 9550 (a close relative of the 5510), a few top RAM scores around 90% are with G.SKILL 2x16 2666MHz kits. I haven't seen any other sticks listed running at 2666, and there are several reports of 2800 sticks going at 2400. No clue if a BIOS hack or such is involved.

    The advantage is AFAIK notable in RAM benchmarks and in certain very specific programming tasks, while aggregated performance benchmarks mostly show about a percent of speed up, so there are probably better ways of spending money.
     
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