Doesnt Santa Rosa support 800mhz memory?

Discussion in 'MacBook Pro' started by Emrtr4, Jun 5, 2007.

  1. Emrtr4 macrumors regular

    Joined:
    Feb 6, 2006
    #1
    Okay, so I posted and it turns out that as Apple claimed the memory is now 667 mhz, just as before.

    But am I crazy or was it all over these forums that ONE of the improvements of Santa Rosa was 800 mhz memory...
     
  2. psychofreak Retired

    psychofreak

    Joined:
    May 16, 2006
    Location:
    London
    #2
    It needs a higher voltage, and generates more heat...not good for a notebook!
     
  3. flopticalcube macrumors G4

    flopticalcube

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    In the velcro closure of America's Hat
    #3
    IIRC, the current chipset (965) supports only 533 and 667MHz memory.
     
  4. mrkramer macrumors 603

    mrkramer

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    Somewhere
    #4
    It supports it but it is very expensive, and nobody else is shipping with it.
     
  5. krisis1 macrumors member

    Joined:
    May 13, 2007
    #5
    Santa Rosa doesn't support 800MHz memory!

    SR _does_ have an 800MHz FSB, but only a 667MHz memory controller. I learned the same thing today, look at the intel specs if you don't believe me :)
    However, if you stick in some DDR2-6400 Sodimm's (800MHz), then they should clock back to 667 and work in your system. But you'd pay alot more and you'll never use the extra 133MHz in the current MBP's.
     
  6. Butthead macrumors 6502

    Butthead

    Joined:
    Jan 10, 2006
    #6

    I think this debate will end on the next revision of the MBP to 2.6Ghz T7800 in September, when we'll finally get a 2k LED backlit 17in screen.

    But for now, some really great entertaining reading about the 800Mhz DDR2-6400 SODIMM's running in a stinkpad T61 (btw Crucial are down to $200 per 2GB, and falling by the week).

    http://forum.thinkpads.com/viewtopic.php?t=43218


    I would have prefered Apple did not upgrade the mem to 2 1GB pieces on the recent MBP update, and just left it at 1 stick of 1G 667Mhz RAM and dropped the price on the MBP $100, then if it turned out current Santa Rosa's can support 800Mhz , meaning the memory controller can up the bus frequency to 400Mhz from 333, then one only has to swap out the single 1GB stick.
     
  7. aaronw1986 macrumors 68030

    Joined:
    Oct 31, 2006
    #7
    September? That's very wishful thinkng. Maybe 17 inch LED screends, but I doubt processor updates till at least December, prob Jan
     
  8. maxp1 macrumors regular

    Joined:
    Feb 12, 2005
    #8
    Seconded. Minor updates if any until Penryn, Q1 or Q2 2008.
     
  9. Butthead macrumors 6502

    Butthead

    Joined:
    Jan 10, 2006
    #9
    Yes minor, agreed. Penryn and later Montevina chipset to support (rumored) more energy efficient/faster DDR3 mem. Not necessarily a quantum jump in performance with Penryn either, but incremental, and by then the slowest I/O part of the system, the hard drive should be addressed with either 128GB SSD or later in 2008 256GB SSD drives that put even enterprise class 15k rpm drives to shame. Instant on/off laptops are coming...just probably not as soon as we all want ;-).

    It's alright, even MR Admins give me no respect, and don't bother to check my links in various posts:


    From earlier in the month (note that MR's front page news as far as Intel Turbo Mem, forgot to mention that Intel's top brass also mentioned the elusive high-end gamer, overclocking potential Core 2 Extreme mobile chips coming up, so it's 'official' even if Apple chooses not to use these, and goes with the T7800 2.6Ghz fixed CPU in September with 17in LED and 800Mhz DDR2?, as 800Mhz DDR2 SODIMM's should be relatively as cheap at 667Mhz by then- (current price search shows them @~$200/2GB module: http://www.google.com/products?um=1&tab=wf&hl=en&q=crucial 2GB ddr2 800mhz SODIMM); at the links below:


    Intel mobile Core 2 Extreme, price cuts leaked



    What remains to be seen (probably only on the PC side, as Apple doesn't like to give anyone choices ;) ) is if a revised Santa Rosa chipset (memory controller) will allow for overclocking the entire bus system (if it doesn't already have that capability, but Intel hasn't specifically stated that as yet) such that you could go overclock beyond 800Mhz, if you wanted, in addition to the 2.8Ghz X7900 which Apple will not likely be able to stuff into a MBP in September. The massive jump *all of 0.07 Ghz* in this current update from 2.33 to 2.4Ghz would pale in comparison to a 2.8Ghz or higher x7900 in September 2007 Of course, the difference btw 667 & 800Mhz isn't really that great, just incremental...but what would you rather have???

    Hmmm, how long do you think it will take for MR to post this link:

    [Intel Mobile CPU Price Cut In Sep]... next week, or the week after that?
     
  10. HFU macrumors regular

    Joined:
    Jun 8, 2005
    #10
    Currently, Intel's official spec sheet doesn't state 965 chipset support 800MHz memory, but natively 965 will support memory speed @ 800MHz and beyond. Thinkpad T61 and T61p have supported 800MHz. Check the notebookreview.com or thinkpads.com forums, you can find users have been running 800MHz SODIMM in their new SR T61. It only take Apple to release an updated firmware to make the SR MBP to support 800MHz SODIMM. All it needs is the (1:2) CPU:Memory ratio in addition to (3:5) ratio. You can also check that under Boot Camp using CPU-Z.

    It makes sense for Apple to release another SR refresh before the Montenvina platform as September would be a good time when DDR2-800 modules have been ramping up. It will also coincide with 17" LED and October Leopard release.

    By the way, the new gen DDR2-800 modules doesn't consume more power, still at 1.8v, hence the heat difference would be minimal compare to DDR2-667. It's the initial SR 965 chipset revision itself that consumes more power hence more heat. It's likely to get another revision by September which will be a good time for Apple to revise MB with SR refreshed 965 chipset.
     
  11. aliquis- macrumors 6502a

    Joined:
    May 20, 2007
    #11
    So something would have to be updated for the new mbps to support 800mhz memory? Have anyone tried it yet and checked if they run at 667 or 800?
     
  12. diamond.g macrumors 603

    diamond.g

    Joined:
    Mar 20, 2007
    Location:
    Virginia
    #12
    Hmm, odd. AFAIK the SR can take 800Mhz memory, but it will run it at 667. I haven't heard of anything that would enable faster memory support out of the chipset.
     

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