1600MHz clockdown in 2011 Mini

Discussion in 'Mac mini' started by shortcut3d, Sep 22, 2011.

  1. shortcut3d macrumors 65816

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    #1
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    As the title says, will 1600MHz RAM clock down in the Mini?
     
  2. Lokheed macrumors regular

    Joined:
    Jun 10, 2009
    #2
    I wouldn't bet on it, but try it... see if it works for you. If they're anything like the 2010 minis, then they are going to be real fickle about an exact match.
     
  3. philipma1957 macrumors 603

    philipma1957

    Joined:
    Apr 13, 2010
    Location:
    Howell, New Jersey
    #3
    They are far far far better with ram then 2010 mac mini's

    If you have the ram please try it I THINK IT WILL WORK.

    I did 20 plus 2011 mini's with crucial, corsair, pny, patriot, gskill, hynix, samsung 4gb sticks and a few with elpida 8gb sticks corsair 8gb sticks and samsung 8gb sticks.

    Also the 2011 have come with 1gb and 2gb hynix and samsung sticks. They have all been good.


    The 2010 minis were really choosy with 4 gb ram sticks basically samsung were gold and lots more were hit or miss. I stopped upgrading the 2010 minis because of this.

    No 2010 mini ever downclocked ram perfectly for me. I have 2 2010's on hand now and have to wait for more samsung sticks. A pita
     
  4. shortcut3d thread starter macrumors 65816

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    Ordered the Samsung 1600MHz PC12800 RAM. It's currently on Backorder. I am trying to fix an issue with video performance under Windows 7 with Live TV. Over in the MBP forums some has successfully up clocked SNB by adding 1600MHz RAM and had performance gains with the integrated Intel HD Graphics. I'm hoping this may be a permanent solution to my problem.
     
  5. philipma1957 macrumors 603

    philipma1957

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    Location:
    Howell, New Jersey
    #5



    I think it will work of all the ram tests I did the only 1333 ram that would downclock halfway decent to a 2010 mini was samsung. It would pass rember and it worked okay but the mini tended to overheat more with that ram then 1066 samsung ram. so if any thing will work it will be the samsung. These new cpus/mobo's seem to handle ram better the then 2010 mini's did.

    BTW if it upgrades the intel graphics that would be cool.
     
  6. shortcut3d thread starter macrumors 65816

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    Aug 24, 2011
    #6
    I canceled the back ordered Samsung and decide to push the limit with the Kingston HyperX 1866MHz for i5/i7. http://www.newegg.com/Product/Product.aspx?Item=N82E16820104259 If PnP on the 2011 Mac Mini is working then it should clock at the max allowed by the EFI. This will answer what the 2011 Mac Mini is capable. If its not stable the memory will go back and I'll step down to 1600MHz. Worse case I end up at 1333MHz RAM and convince New Egg to credit towards more 8GB sticks which we know are working.

    So if this does work what am I doing with the all the 8GB sticks? I'm going to try them all in the 2010 iMac. According to OWC it supports 32GB, but I've had issues with all four slots occupied with non-Samsung RAM. Apparently the lastest EFI stabilized this, but I have yet to test.

    ----------

    How can I confirm the faster memory is running at its rated speed? Does System Information state the actual run speed or just what the RAM reports back through PnP?
     
  7. Lokheed macrumors regular

    Joined:
    Jun 10, 2009
    #7
    yeah, it should. It'll list them as:

    Code:
    BANK 0/DIMM0:
    
      Size:	4 GB
      Type:	DDR3
      Speed:	1333 MHz
      Status:	OK
      Manufacturer:	0x8394
      Part Number:	0x393731363437410000000000000000000000
      Serial Number:	0x00000000
    
    BANK 1/DIMM0:
    
      Size:	4 GB
      Type:	DDR3
      Speed:	1333 MHz
      Status:	OK
      Manufacturer:	0x8394
      Part Number:	0x393731363437410000000000000000000000
      Serial Number:	0x00000000
    Pretty sure the speed is the true speed the RAM is running, and not what it's branded as. Not sure if a 3rd party utility can test it with any more accuracy. But follow up with us and let us know. I'm really interested in your results.
     
  8. Evostar* macrumors member

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    Oct 29, 2009
  9. Lokheed macrumors regular

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    Jun 10, 2009
    #9
    Nice dude! So, are they really running at 1600 MHz then? What's the benefit?
     
  10. Evostar* macrumors member

    Joined:
    Oct 29, 2009
    #10
    not sure how to confirm. but found a mac ram program.


    Memtest version 4.22 (64-bit)
    Copyright (C) 2004 Charles Cazabon
    Copyright (C) 2004-2008 Tony Scaminaci (Macintosh port)
    Licensed under the GNU General Public License version 2 only

    Mac OS X 10.7.1 (11B2118) running in multiuser mode
    Memory Page Size: 4096
    System has 4 Intel core(s) with SSE
    Requested memory: 3201MB (3357028352 bytes)
    Available memory: 3201MB (3357028352 bytes)
    Allocated memory: 3201MB (3357028352 bytes) at local address 0x0000000101000000
    Attempting memory lock... locked successfully
    Partitioning memory into 2 comparison buffers...
    Buffer A: 1600MB (1678514176 bytes) starts at local address 0x0000000101000000
    Buffer B: 1600MB (1678514176 bytes) starts at local address 0x00000001650c1800

    Running 1 test sequence... (CTRL-C to quit)

    Test sequence 1 of 1:

    Running tests on full 3201MB region...
    Stuck Address : setting 1 of 16 ok
    Linear PRN : setting 1 of 16 ok
    Running comparison tests using 1600MB buffers...
    Random Value : \ ok
    Compare XOR : ok
    Compare SUB : ok
    Compare MUL : ok
    Compare DIV : ok
    Compare OR : ok
    Compare AND : ok
    Sequential Increment: ok
    Solid Bits : setting 1 of 64 ok
    Block Sequential : setting 1 of 256 ok
    Checkerboard : setting 1 of 64 ok
    Bit Spread : setting 1 of 128 ok
    Bit Flip : setting 1 of 512 ok
    Walking Ones : setting 1 of 128 ok
    Walking Zeroes : setting 1 of 128All tests passed! Execution time: 958 seconds.
     
  11. applefan69 macrumors 6502a

    applefan69

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    Oct 9, 2007
    Location:
    Medicine Hat
    #11
    Bringing back an old topic because I can possibly get some dd3 1600 mhz ram for cheap. But like has been stated the 2011 mac mini is only said to support 1333mhz.

    However could we call the last poster confirmation the mac will support the faster ram, apple just doesnt want us to know that?
     
  12. 53x12 macrumors 68000

    53x12

    Joined:
    Feb 16, 2009
    #12
    You might also have the potential issue that not all 1600 MHz ram will play the same way in your 2011 Mini. Some might "behave" nicely and others won't. Only way to know is by giving it a shot and seeing if the Mini will recognize it at 1600 MHz.
     
  13. mini2011 macrumors newbie

    Joined:
    Aug 25, 2015
    #13
    Just hopped my 2011 mini (server version with Core i7 - macmini5,3) with Crucial's memory:

    http://www.bhphotovideo.com/c/product/889298-REG/crucial_ct2k8g3s160bm_16gb_2x8_204p_sodimm.html

    Working like a champ and the system acknowledged it at 1600 Mhz. So far it seems to be running fine. I'll try to report back if I notice any flakiness.
     

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