1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Premiere Elite performance enhancements

Discussion in 'TiVo Premiere DVRs' started by brentil, Oct 10, 2011.

  1. Oct 11, 2011 #21 of 234
    jfh3

    jfh3 New Member

    4,469
    0
    Apr 15, 2004
    Denver area
  2. Oct 11, 2011 #22 of 234
    rainwater

    rainwater Active Member

    7,057
    1
    Sep 21, 2004
    You can't compare it a desktop system since it uses a Broadcom SoC which offloads a lot of tasks to the dedicated hardware. It's much different than a desktop system since it is so specialized.
     
  3. Oct 11, 2011 #23 of 234
    brentil

    brentil New Member

    342
    0
    Sep 9, 2011
    Yeah, I miss stated what you intended. The information written on the memory chip itself would be useful to know what type of RAM it is. Also if you can find the MoCA chip so we can ensure it is the one we think it is. Intrinsic or something like that?

    The current S4 has 4 x 128 MB chips on it, I wouldn't be surprised if the 1 x 1024 MB chip cost the same or less than the 4 other chips. It also decreases power draw and and heat generation. It also allows decreasing the motherboard complexity which looking at the Elite vs non-Elite there are a lot less traces now. Since the new design has 1 chip on one side they could add another chip to the other side of the PCB opposite the existing one still leaving the other traces off.

    Short answer...
    Maybe, it depends on how much data a well soaked TiVo stores in the SQL DB and how much more room for overhead there is in the CPU to run more advanced applications.

    Long answer...
    More RAM is always better RAM until you run out of things to load into RAM. Also as rainwater said a TiVo has lots of dedicated hardware to offload specific tasks too. So the question comes to how much data does a TiVo store in the SQL database? This aspect of the TiVo I'm rather lacking in knowledge, but if someone has access to the location the SQL DB files are stored that would give a good answer for a long time running Premiere. You can load that entire data set into RAM + cached queries that are commonly used. Plus you can keep larger portions of the OS in memory but a device like a TiVo (like a phone) uses a much smaller OS footprint. You could however use the memory to load higher detail graphics used for interfaces as well as load larger applications into memory (like more advanced Flash applications).

    You also then run into the limitations of just what we can run with the current CPU in this device which I believe is a MIPS32 34K based design. I don't think more than 1 GB of RAM will provide significant benefits to misc applications as I don't believe anything extremely advanced could be run on this hardware.
     
  4. Oct 11, 2011 #24 of 234
    brentil

    brentil New Member

    342
    0
    Sep 9, 2011
  5. Oct 11, 2011 #25 of 234
    brentil

    brentil New Member

    342
    0
    Sep 9, 2011
    Just shut off my TiVo, let it sit for 30 seconds and then powered it on. I stopped the timer when the TiVo video started. My Premiere has 1x M-Stream CC, SDV, WD MyDVR Extender, Slide Remote dongle, and software 14.8c installed.

    Time to Boot - 8:54
     
  6. Oct 11, 2011 #26 of 234
    sbiller

    sbiller Active Member

    1,915
    0
    May 10, 2002
    Tampa, FL
    I just discovered the Elite has 2GB of RAM instead of the 1GB of RAM I reported earlier. Turns out it has 2 of the Hynix chips. Once I removed the hard drive I was able to see the second chip!
    More to come...
    ~Sam
     
  7. Oct 11, 2011 #27 of 234
    brentil

    brentil New Member

    342
    0
    Sep 9, 2011
    Can you get the part # off of the top of the chip?
     
  8. Oct 11, 2011 #28 of 234
    sbiller

    sbiller Active Member

    1,915
    0
    May 10, 2002
    Tampa, FL
    Atheros AR8328 - another circuit that was hiding below the hard drive!
    ~Sam
     
  9. Oct 11, 2011 #29 of 234
    sbiller

    sbiller Active Member

    1,915
    0
    May 10, 2002
    Tampa, FL
  10. Oct 11, 2011 #30 of 234
    brentil

    brentil New Member

    342
    0
    Sep 9, 2011
    That is rather interesting.

    http://www.qca.qualcomm.com/technology/technology.php?nav1=48&product=101

     
  11. Oct 11, 2011 #31 of 234
    brentil

    brentil New Member

    342
    0
    Sep 9, 2011
    Thanks for punching my theory in the gut with using that Advanced Format drive in the Elite TiVo... :D

    Of note though since TiVo is the one building the partitions they can do the partition alignment for factory built devices which negates a lot of the AF issues I had discussed before.
     
  12. Oct 11, 2011 #32 of 234
    sbiller

    sbiller Active Member

    1,915
    0
    May 10, 2002
    Tampa, FL
    With hard drive removed you can see the Atheros Gigabit Switch (upper right).

    [​IMG]

    Close up of the MoCA driver.

    [​IMG]

    Close up of the Atheros AR8328 Gigabit Switch.

    [​IMG]

    Entropic EN2510 MoCA circuit

    [​IMG]


    1 of 2 hynix H5PS1G63EFR 1GB Ram Chips

    [​IMG]

    Two 1GB Ram Chips

    [​IMG]

    JS28F640 Flash Memory (128MB)
    [​IMG]

    ~Sam
     
  13. Oct 11, 2011 #33 of 234
    brentil

    brentil New Member

    342
    0
    Sep 9, 2011
    Awesome information!

    Not to get greedy but are there chips on the flip side of the board too like the current non-Elite? :D
     
  14. Oct 11, 2011 #34 of 234
    ghuido

    ghuido New Member

    311
    0
    May 8, 2007
    This one of the best threads I have read in a long while. This is from another programeer and tech junkie ... Tear it DOWN !!!!
     
  15. Oct 11, 2011 #35 of 234
    P42

    P42 New Member

    1,266
    0
    Jan 7, 2003
    01460
    The use of flash memory in interesting, there are a few possible uses for it, some good, some less good.
     
  16. Oct 11, 2011 #36 of 234
    brentil

    brentil New Member

    342
    0
    Sep 9, 2011
    The non-Elite has a flash memory chip in the same location but its 8 MB instead of 128 MB. So they either need more storage for new features of the Elite or they're planning on using it for something else, like maybe Preview units too?
     
  17. Oct 11, 2011 #37 of 234
    P42

    P42 New Member

    1,266
    0
    Jan 7, 2003
    01460
    Valid point. I wasn't aware that the non-Elite has flash. And if a Preview is just a trimmed down Elite, no HDD, one tuner etc, it will need some local storage for the firmware, and it is likely cheaper to just use that same chip on the Elite even if it does not currently need all 128MB.
     
  18. Oct 11, 2011 #38 of 234
    turbobozz

    turbobozz New Member

    211
    0
    Sep 21, 2006
    MD/VA
    Those are Gb (gigabit) chips not GB (gigabyte).
    8 bits = 1 byte

    RAM chips tend to be listed in bits not bytes.
     
  19. Oct 11, 2011 #39 of 234
    socrplyr

    socrplyr Active Member

    1,079
    1
    Jul 19, 2006
    Heh, I just looked at the chips right before you posted and saw the 1G in there and thought the same thing. I just let it go until I had time to look up the full part (as 1G could just have randomly been in the part number). You are correct that it is a 1Gb or 128MB chip. There is a good chance there more on the back side of the board. I also didn't say anything b/c the last time I looked at the markings on RAM chips was back in the SDRAM days of old (and then they definitely weren't talking about 1Gb chips...).

    I can't read the markings on the Flash chip, but it might be only 16MB... as it might be 128Mb... This would make a lot more sense... 128MB would be a lot and expensive, unless they were going to move more stuff to it. Right now i am betting it is just bios memory.
     
  20. Oct 11, 2011 #40 of 234
    brentil

    brentil New Member

    342
    0
    Sep 9, 2011
    Yes you're both correct I'm betting. We're letting excitement get us all riled up and it's making us ignore the basics...

    So we have 4 x 128 MB chips = 512 MB of DDR2 RAM (System memory)
    and 1 x 16 MB Flash RAM (BIOS/boot)
     

Share This Page