Memory the bottleneck in systems?

Discussion in 'OT Technology' started by Swerve, Jun 17, 2008.

  1. Swerve

    Swerve OT Supporter

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    I'm looking to treat myself to a new desktop and am wondering whether it's worth getting the fastest RAM I can afford. I'm thinking the memory may be the main bottleneck for systems? :wiggle:

    I know the actual bottleneck is the harddrive, hence I'm looking at a Raptor, nothing more I can do in that regard unless I venture down the RAID route, which I'm not.

    Any thoughts on the speed of RAM effecting system performance?

    Thanks. :bigthumb:
     
  2. crontab

    crontab (uid = 0)

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    you won't notice a difference unless you stare at synthetic benchmarks all day

    just get the best and most within your budget.
     
  3. GOGZILLA

    GOGZILLA Double-Uranium Member

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    yes memory access is the slowest part of computers
     
  4. P07r0457

    P07r0457 New Member

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    hard drive is generally slowest.

    DDR2 is still the way to go, imo.
     
  5. Limp_Brisket

    Limp_Brisket New Member

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    nothing wrong with some high performance memory. back in the day mushkin made the best stuff, i don't know if that is still the case.
     
  6. deusexaethera

    deusexaethera OT Supporter

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    Quit razzin' the kid, chief.

    - - -

    Make sure you can divide your CPU's bus speed by the memory's bus speed and get a whole number (e.g. 1066 / 533 = 2 = good, 1066 / 800 = 1.3325 = bad). Then get the memory with the best rating and shortest timings (usually four numbers like 2-2-3-5 or something similar) that you can find.

    - - -

    For the record, the hard drive is and always will be the slowest part of a computer (not counting removable disks). It's a matter of economics: size * speed = cost. Hard drives are huge, so they have to be slow compared to RAM, or there's no way you could afford one.
     
  7. P07r0457

    P07r0457 New Member

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    wrong. memory that is in-sync with the fsb is best (1:1 ratio) but there is no performance diff between a 13325:1 and a 2:1 ratio.

    533MHz and 667MHz ram will perform equally on a chip with a 1066FSB. However, 667MHz will out-perform 533MHz on a chip with a 1333FSB.
     
  8. Ameter

    Ameter Active Member

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    if you use applications which are memory intensive (games usually) then you'll likely see a performance increase with high performance RAM
     
  9. Limp_Brisket

    Limp_Brisket New Member

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    that's the problem with laptops. while getting 4gb of RAM in your desktop and laptop is possible, laptop ram has worse timings and so on. just another blow against the gaming laptop :wtc:
     
  10. P07r0457

    P07r0457 New Member

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    it's not difficult to find notebook memory in DDR2 with a CAS latency of 4.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16820148060

    granted you can find CAS-3 on desktop memory... CAS-5 is still the most common, with CAS-4 considered "high-performance".
     
  11. deusexaethera

    deusexaethera OT Supporter

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    You missed my point. 1:1 = 1 and 13325:1 = 13325. Both are whole numbers. What I'm talking about is something like 800:667 = 1.333, which is not a whole number.

    In that case, the CPU clock and the RAM clock both have to tick multiple times (in the case of 800:667, it's 4 ticks for the CPU and 5 ticks for the RAM) before the clock ticks line up and they can exchange data.

    It only gets worse as the numbers get bigger. Like 1066:800 = 1.3325, or 1333:800 = 1.66625 -- in those cases, the clocks are only in sync maybe once every 8, 9, 10 ticks, which strangles data throughput and slows down performance unless the CPU has a very large (and very smart) onboard cache.
     
  12. P07r0457

    P07r0457 New Member

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    You honestly have no understanding of this, do you????
     
  13. deusexaethera

    deusexaethera OT Supporter

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    I'm not getting in this argument with you. My complete, total misunderstanding of your personal reality has served me well thus far in life.
     
  14. Ameter

    Ameter Active Member

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    you seriously should post your certs, given how much you like to claim you're right about nearly every topic
     
  15. P07r0457

    P07r0457 New Member

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    i was unaware they had a ddr cert :mamoru:
     
  16. Ameter

    Ameter Active Member

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    :hsugh: I take that to mean you have none
     
  17. P07r0457

    P07r0457 New Member

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    ccna, a+, linux+. I stopped doing certs, they are worthless. Getting a cert doesn't mean you know the info, and what am I gonna give myself a raise for getting a cert :nono: :rofl:
     
  18. Ameter

    Ameter Active Member

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    by certs I also meant degrees and whatnot

    but you've answered the question. You're a run of the mill computer techie
     
  19. Doc Brown

    Doc Brown Don't make me make you my hobby

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    Memory is nearly 100,000 times faster than the average SATA drive.

    So memory is not your bottleneck.
     
  20. P07r0457

    P07r0457 New Member

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    my degree is a b.s. in comp sci from csuf :mamoru:
     
  21. Ameter

    Ameter Active Member

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    it can be, once everything's loaded into memory :mamoru:
     
  22. deusexaethera

    deusexaethera OT Supporter

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    No, but they help to demonstrate to others that you know your shit. Your own opinion of yourself isn't the only one that matters when you live in a world of six billion people, you know.

    So...how do we know you know what you're talking about? Surprisingly, making aggressive noises and beating on your chest isn't as convincing as it was a few million years ago.
     
  23. P07r0457

    P07r0457 New Member

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    Well you can consider the fact that following my recommendations results in success.
     
  24. trouphaz

    trouphaz New Member

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    the dot matrix printer is the bottleneck.
     
  25. Ameter

    Ameter Active Member

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    that doesn't mean you know everything. Plus I've yet to follow any of your recommendations
     

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