Solved

Mixing two different RAM Timings

Hi, I currently have two sticks of G.Skill Ripjaws X RAM that has a timing of 9-9-9-24, but I'm looking to add two more sticks in and I found a set that has a timing of 9-9-9-24-2N.

Are these the same timings? Would it be safe to mix these DIMMs? Or would I be better off buying a set of RAM with 7-7-7-21 timings and relax them to 9-9-9-24?
9 answers Last reply Best Answer
More about mixing ram timings
  1. The fourth and fifth timing values are often left off of packaging. The fifth one (2N) is simply the command rate, when high speed memory is used or when multiple DIMMs are used the command rate is normally spread out over multiple cycles; this has a very small impact on performance.

    Mixing modules is never guaranteed, but it will work most of the time. Problems are less likely to occur at JEDEC standard values (which those are) and with a memory controller that supports said speed natively without overclocking.

    It will most likely work without issue.
  2. Your current RAM is most likely 2N (2T) also, it just does not say that, most memory is 2N (Command Rate). I assume the tighter timing stuff is more expensive, so the 9-9-9-24 would be a better buy and should work just fine.
  3. endeavour37a said:
    Your current RAM is most likely 2N (2T) also, it just does not say that, most memory is 2N (Command Rate). I assume the tighter timing stuff is more expensive, so the 9-9-9-24 would be a better buy and should work just fine.


    Yeah, but buying the same amount of RAM with that same timing isn't possible right now, since it's out of stock everywhere I look. How could I just check if its 2N to be sure?
  4. Your BIOS (UEFI) should tell you the command rate.......
  5. So, one more quick question. If I got This RAM (http://www.newegg.com/Product/Product.aspx?Item=N82E16820231417) to couple it with my current RAM (http://www.newegg.com/Product/Product.aspx?Item=N82E16820231426) would I run in to any problems?
  6. All GSkill DRAM comes at 2T or 2N ( the letter designation doesn't really matter, used to be Intel tended to using the T Designator and AMD used the N, but these days it's more decided by whoever has the lead in the BIOS programming for a given model of mobo),,,most all other manufacturers are the same.

    As far as mixing DRAM, there's no guarantee two or more sets will play together, even of the same exact model - which is why they offer DRAM in such diverse packaging, the sticks in a given package are tested to play together (also why say a 4 stick package costs a little more than two 2 stick packages, it's much easier to find 2 sticks that'll play nice than to find 4 sticks that will all play nice
  7. Best answer
    Tradesman1 said:
    All GSkill DRAM comes at 2T or 2N ( the letter designation doesn't really matter, used to be Intel tended to using the T Designator and AMD used the N, but these days it's more decided by whoever has the lead in the BIOS programming for a given model of mobo),,,most all other manufacturers are the same.

    As far as mixing DRAM, there's no guarantee two or more sets will play together, even of the same exact model - which is why they offer DRAM in such diverse packaging, the sticks in a given package are tested to play together (also why say a 4 stick package costs a little more than two 2 stick packages, it's much easier to find 2 sticks that'll play nice than to find 4 sticks that will all play nice


    ++1^, Good answer... :)

    Just a FYI for what's it worth, your current RAM is Ripjaw, I have read that G.Skill uses the same Samsung chips in the Ares series as the Ripjaw series, only difference is the heatsink, I don't know about the Sniper.

    Found these, they are a real good price, they are 1600 but you can just tune them down to the same timing as your current memory. It may be even better to get something like 1600 because if they can run at 1600, they should have no problem running stable at a slower speed....just a thought

    http://www.ebay.com/itm/G-SKILL-Ripjaws-X-Series-8GB-RAM-2-x-4GB-240-Pin-SDRAM-DDR3-1600-PC3-12800-/201010507662?pt=US_Memory_RAM_&hash=item2ecd28ef8e
  8. endeavour37a said:
    Tradesman1 said:
    All GSkill DRAM comes at 2T or 2N ( the letter designation doesn't really matter, used to be Intel tended to using the T Designator and AMD used the N, but these days it's more decided by whoever has the lead in the BIOS programming for a given model of mobo),,,most all other manufacturers are the same.

    As far as mixing DRAM, there's no guarantee two or more sets will play together, even of the same exact model - which is why they offer DRAM in such diverse packaging, the sticks in a given package are tested to play together (also why say a 4 stick package costs a little more than two 2 stick packages, it's much easier to find 2 sticks that'll play nice than to find 4 sticks that will all play nice


    ++1^, Good answer... :)

    Just a FYI for what's it worth, your current RAM is Ripjaw, I have read that G.Skill uses the same Samsung chips in the Ares series as the Ripjaw series, only difference is the heatsink, I don't know about the Sniper.

    Found these, they are a real good price, they are 1600 but you can just tune them down to the same timing as your current memory. It may be even better to get something like 1600 because if they can run at 1600, they should have no problem running stable at a slower speed....just a thought

    http://www.ebay.com/itm/G-SKILL-Ripjaws-X-Series-8GB-RAM-2-x-4GB-240-Pin-SDRAM-DDR3-1600-PC3-12800-/201010507662?pt=US_Memory_RAM_&hash=item2ecd28ef8e



    Okay, so I'll pick up the Ripjaw Xs at 1600 MHz, I just need to know how to lower the memory speed of the 1600 set to match the 1333 set already in my rig.
  9. When you first install the new sticks, all will drop to the mobos default , simply check in BIOS that they are at 1333 and if needed set the timings to 9-9-9-24 (or 27)
Ask a new question

Read More

Memory