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GSkill RAM Timing Differences (9-9-9 vs. 9-9-9-24-2N)

Ok, I have a new build. ASRock Extreme4 Z77 mobo, i5 2500k cpu. I ordered this 2x4G set of GSkill Ripjaws initially...

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231314

I then ordered my mobo.... and it came with a free set of GSkill Ares 2x4G.

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231546

Both are DDR3 1600, 1.5v and cas latency 9. The only difference is the timing specs. The original set of Ripjaws is 9-9-9-24-2N and the new free set I am receiving is 9-9-9.

My question is... will these two sets function fine together on my mobo? Any input would be appreciated. I imagine it should be fine if I set my bios right... Please let me know what you think. Thanks! :)
12 answers Last reply Best Answer
More about gskill timing differences
  1. Here is the manufaturer pages. Both are rated 2N. But what does the 24 mean? And why do the Ares not have that distinction...?

    http://gskill.com/products.php?index=476
    http://www.gskill.com/products.php?index=239
  2. I personally would not mix match ram and use only the EXACT same for best stability and performance.
  3. Best answer
    Duh, hmm...if you knew it was coming with F3-1600C9D-8GAB then why didn't you buy another set of F3-1600C9D-8GAB for 4x4GB?!

    CAS Timings (CAS-TRCD-TRP-TRAS-CR)

    The 24 is the TRAS which must be higher than the CAS + TRCD is order to work, and 2N is the Command Rate is essentially the delay in commands to the RAM. Most kits DDR3-1600 and faster a 2/2N/2T (same thing) is recommend to avoid errors.

    DDR3-1600 9-9-9-9-25-2N @ 1.50v ; F3-1600C9D-8GAB
    DDR3-1600 9-9-9-9-24-2N @ 1.50v ; F3-12800CL9D-8GBRL
    =========================
    DDR3-1600 9-9-9-9-25-2N @ 1.50v ; manual mix ; DRAM Voltage 1.50v~1.55v & VCCIO/VCCSA 1.10v~1.20v.

    Install:
    CPU: | Kit1 | Kit2 | Kit1 | Kit2 |

    I don't recommend mixing IC's, Frequencies, CAS Timings, SS/DS, Voltages, etc in memory kits. So I don't recommend using 'XMP' in the BIOS and instead Manually set: DRAM Frequency, CAS Timings, and you might need to raise the DRAM Voltage by +0.05v and perhaps the VCCIO to 1.10v~1.20v. Ares typically requires a slight raising of the VCCIO/VCCSA Voltage.

    /edit - once they're installed and the BIOS is manually set as I posted above then extensively test the RAM with Memtest86+ using a bootable CD/DVD/USB, F8, and run Memtest overnight and if you don't have any errors then you're good.

    Memtest86+ (.ISO) - http://www.memtest.org/#downiso
  4. Awesome! Great stuff. I had already bought the Ripjaws and when I finally purchased my mobo it unexpectedly came with the Ares set. Same voltage, same latency, same timings.

    So... no XMP, raise the voltage .05v?

    You say to install... | Kit1 | Kit2 | Kit1 | Kit2 |...

    My mobo ram channels are set up like this... a1-a2-b1-b2.

    Are you saying I should put one of each in a channel and one of each in the b channel, or should I put them both in their own, (one set in a's and one set in b's)?
  5. Best answer selected by Rienone.
  6. I knew (know) your MOBO, use the settings and installation exactly how I posted above.

    Kit1 = one
    Kit2 = the other

    Yep, it's going to be Red + Blue or Blue + Red in your DIMM slots.
  7. jaquith said:
    I knew (know) your MOBO, use the settings and installation exactly how I posted above.

    Kit1 = one
    Kit2 = the other

    Yep, it's going to be Red + Blue or Blue + Red in your DIMM slots.


    Sorry I'm still a little confused what you are recommending. I apologize.

    A:) A1=Ripjaw A2=Ripjaw B1=Ares B2=Ares (red, red, blue, blue)

    OR...

    B:) A1=Ripjaw A2=Ares B1=Ripjaw B2=Ares (red, blue, red, blue)
  8. Red | Blue or Blue | Red, as long as CH_A = one of each and CH_B = one of each. This 'levels' the channels equally.

    Red | Blue | Red | Blue
    or
    Blue | Red | Blue | Red

    Flip a coin, just stagger...
  9. jaquith said:
    Red | Blue or Blue | Red, as long as CH_A = one of each and CH_B = one of each. This 'levels' the channels equally.

    Red | Blue | Red | Blue
    or
    Blue | Red | Blue | Red

    Flip a coin, just stagger...


    Awesome! You have been a huge help! I appreciate it greatly!

    Plan of Action:
    A1=Ripjaw A2=Ares B1=Ripjaw B2=Ares (red, blue, red, blue)
    Manually set to DDR3-1600 9-9-9-9-25-2N... No XMP... DRAM Voltage from 1.50v to 1.55v... VCCIO/VCCSA from 1.10v to 1.20v
    Boot Memtest86+, run overnight and hopefully no errors.

    All this assuming all the sticks are ok... ! :) Thanks again!
  10. It should be fine and the tiny (safe) voltages will help, and manually setting the CAS Timings will also help. XMP is a lot deeper with kit specific 'deep' timings, the other timings as Auto is a better option.

    If you look at this image you'll understand (RC~RTP; kit specific)-> http://i1013.photobucket.com/albums/af254/Jaquith/AIDA64-Extreme-SPD.jpg
  11. jaquith said:
    It should be fine and the tiny (safe) voltages will help, and manually setting the CAS Timings will also help. XMP is a lot deeper with kit specific 'deep' timings, the other timings as Auto is a better option.

    If you look at this image you'll understand (RC~RTP; kit specific)-> http://i1013.photobucket.com/albums/af254/Jaquith/AIDA64-Extreme-SPD.jpg


    Awesome stuff, sir!
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