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  1. #1
    ROG Guru: White Belt Array
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    XMP 1 and XMP 2 difference

    I just upgraded from a Z270 to Z390 using the XI Code. I moved the G.Skill RAM from my other system. On the Z170 I only had 1 XMP option. On this new board I see 2. What's the difference and which one should I choose?

  2. #2
    ROG Guru: Yellow Belt Array Zammin PC Specs
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    I ran into this last night. Using G Skill ram as well, 3200mhz C16 Trident Z RGB. XMP 1 is the same as XMP on last gen in that it changes the 4 main timings, clock speed and voltage. The motherboard basically handles the rest. XMP 2 changes the above and a whole tonne of other RAM settings (on my system at least) and in my case it made my system very unstable. Games kept crashing and stuttering. XMP 1 seems to work fine.
    Last edited by Zammin; 11-11-2018 at 03:46 AM.

  3. #3
    ROG Guru: Black Belt Array Korth PC Specs
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    MotherboardASUS X99 R5E (BIOS2101/1902)
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    Graphics Card #1NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
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    They're just pre-programmed SPD profiles. Use whichever one runs faster if you like (unless one profile doesn't run stable). If you've manually configured your memory timings then the factory preset SPD/XMP/etc profiles would be ignored anyhow.
    "All opinions are not equal. Some are a very great deal more robust, sophisticated and well supported in logic and argument than others." - Douglas Adams

    [/Korth]

  4. #4
    Administrator Array Silent Scone@ASUS's Avatar
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    XMP I is the validated board profile that you will have seen on past generations. Every time a board is validated, this profile is the one used by the memory vendor and ASUS. On Z390, there is now the option to use the DIMM profile which is XMP II. These settings are not validated, so mileage will vary depending on the kit and CPU.

    XMP I - Board optimised timings

    XMP II - Default XMP timings

    Often, XMP II timings will be slightly looser depending on the memory kit. If you check within the UEFI or memtweakit, you'll see a difference in memory subsets.

  5. #5
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    Quote Originally Posted by Silent Scone@ASUS View Post

    XMP I is the validated board profile that you will have seen on past generations. Every time a board is validated, this profile is the one used by the memory vendor and ASUS. On Z390, there is now the option to use the DIMM profile which is XMP II. These settings are not validated, so mileage will vary depending on the kit and CPU.

    XMP I - Board optimised timings

    XMP II - Default XMP timings

    Often, XMP II timings will be slightly looser depending on the memory kit. If you check within the UEFI or memtweakit, you'll see a difference in memory subsets..
    That's very good to know! I've tried both on my hero xi and they both have the same speed and timings. With that said is there a preferred profile, am I risking anything using say xmp 2 in terms of stability maybe?

  6. #6
    Administrator Array Silent Scone@ASUS's Avatar
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    Quote Originally Posted by Rcmorr09 View Post
    That's very good to know! I've tried both on my hero xi and they both have the same speed and timings. With that said is there a preferred profile, am I risking anything using say xmp 2 in terms of stability maybe?

    Same primaries, but subs will often be tighter on the ASUS profile. You can try both and check for instability.

  7. #7
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    Quote Originally Posted by Silent Scone@ASUS View Post
    Same primaries, but subs will often be tighter on the ASUS profile. You can try both and check for instability.
    Last question, I chose ram that had been tested on the motherboard, the list that's available was that tested on xmp 1 or 2? Thanks for the answers!

  8. #8
    ROG Guru: Black Belt Array Korth PC Specs
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    MotherboardASUS X99 R5E (BIOS2101/1902)
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    Memory (part number)Vengeance LPX 4x8GB SS DDR4-3000 (CMK32GX4M4C3000C15)
    Graphics Card #1NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
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    @ASUS ... lol I wish ASUS gave us a little more documentation about stuff like this ... so we'd actually know the features exist.

    I mean meaningful documentation which actually tells the end user what features are there, what they do, what changing them will do.
    Not uninformative nonsense like "Enable/Disable setting = enables or disables setting in BIOS" lol.

    I don't feel it should be the consumer's responsibility to have to constantly monitor and report to support forums to basically read stuff unanswered in the user manual.
    "All opinions are not equal. Some are a very great deal more robust, sophisticated and well supported in logic and argument than others." - Douglas Adams

    [/Korth]

  9. #9
    Administrator Array Silent Scone@ASUS's Avatar
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    Quote Originally Posted by Rcmorr09 View Post
    Last question, I chose ram that had been tested on the motherboard, the list that's available was that tested on xmp 1 or 2? Thanks for the answers!
    What the board applies at default is XMP I, and those are the settings that are validated.


    Quote Originally Posted by Korth View Post
    @ASUS ... lol I wish ASUS gave us a little more documentation about stuff like this ... so we'd actually know the features exist.

    I mean meaningful documentation which actually tells the end user what features are there, what they do, what changing them will do.
    Not uninformative nonsense like "Enable/Disable setting = enables or disables setting in BIOS" lol.

    I don't feel it should be the consumer's responsibility to have to constantly monitor and report to support forums to basically read stuff unanswered in the user manual.



    Hi Korth, it is in the manual.

    Click image for larger version. 

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  10. #10
    ROG Guru: Black Belt Array Korth PC Specs
    Korth PC Specs
    MotherboardASUS X99 R5E (BIOS2101/1902)
    ProcessorHaswell-EP E5-1680-3 SR20H/R2 (4.4GHz)
    Memory (part number)Vengeance LPX 4x8GB SS DDR4-3000 (CMK32GX4M4C3000C15)
    Graphics Card #1NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Graphics Card #2NVIDIA Quadro GP100GL/16GB, 16xPCIe3, NVLink1 (SLI-HB)
    Sound CardJDS Labs O2+ODAC (RevB), USB2 UAC1
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    Storage #1Samsung 850 PRO 512GB SSDs, 4xSATA3 RAID0
    Storage #2Comay BladeDrive E28 3200GB SSD, 8xPCIe2
    CPU CoolerRaijintek NEMESIS/TISIS, AS5, 2xNH-A14
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    Quote Originally Posted by Silent Scone@ASUS View Post
    Hi Korth, it is in the manual.
    Ah, I was wrong in this instance, sorry for the accusation, my apologies. And thanx for the response. I still maintain that ASUS generally provides awfully inadequate documentation, but that's something which has already been said elsewhere.
    "All opinions are not equal. Some are a very great deal more robust, sophisticated and well supported in logic and argument than others." - Douglas Adams

    [/Korth]

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