G.SKILL DDR5-8000 Extreme Speed Memory Kit Now Available

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Dec 1, 2022.

  1. Hilbert Hagedoorn

    Hilbert Hagedoorn Don Vito Corleone Staff Member

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  2. Maddness

    Maddness Ancient Guru

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    I bet that's some expensive memory.
     
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  3. haste

    haste Ancient Guru

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    It is expensive, but damn 8000MHz CL38, that's extremely good. I can already see them in our stores for 630USD incl. VAT. (Intel XMP only)

    I'd probably go for 7800MHz CL36 though. Cheaper and better latency.
     
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  4. k3vst3r

    k3vst3r Ancient Guru

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    Tad expensive costs more than PS5.
     
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  5. nizzen

    nizzen Ancient Guru

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    I'm still using my Green 5600mhz Hynix A-die dimms, and I don't think this new 8000kit from g.skill is any better. Question is: How much better can it be :p

    8533c34 on watercooling:

    [​IMG]
    [​IMG]
     
  6. Captain_Hook

    Captain_Hook Active Member

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    530 USD as far as I've seen.
     
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  7. cucaulay malkin

    cucaulay malkin Ancient Guru

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    will that even run on am5 ?

    incredible.
    that's what I would expect from ddr5 when I finally get it.
     
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  8. Horus-Anhur

    Horus-Anhur Ancient Guru

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    AM5 tops out at 6400. Because of the IF.
    What he did there is very impressive, even for Intel system.
     
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  9. FlyBy

    FlyBy Active Member

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    Exactly, the limit is not Gskill and their talent but your IMC and Motherboard which were never made for such speeds.

    DDR5 ? Yeah...maybe late 2023 or 2024 it will be useful in a wider scope. For now, useless in Desktop.
     
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  10. nosirrahx

    nosirrahx Master Guru

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    I'd like to see someone test these extreme speed DDR5 kits in games that show a massive benefit for the 5800X3D.

    I wonder if the performance gains from massive L3 cache translates into gains from very fast system memory or if L3 is a special beast due to how much less latency there is.
     
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  11. H83

    H83 Ancient Guru

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    Now that`s fast! And expensive...
     
  12. chispy

    chispy Ancient Guru

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    Just a heads up , * just a handful of motherboards are able to run DDR5-8000Mhz + , you do need a 2x Dimm motherboard with good Bios support , example Asus z690 Apex , Asus z790 Apex , Asus z790i Strix , msi z690 unify X , msi z790i edge , Asrock z690 Aqua OC , Asrock z790 pg-itx b4. Plus good cooling on the memory be it water cooling or high air flow over the memory as it does gets very hot those memory sticks at that massive speed and it uses high voltages to do that , and finally a good imc on the cpu.
     
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  13. Danny_G13

    Danny_G13 Master Guru

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    I just finally got my 6400MHz stable, I think I'll pass on this one!
     
  14. Venix

    Venix Ancient Guru

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    If I am not mistaken from all the Ryzen 5xxx series the 5800x3d was the one less affected by the speed of the memory say for example 3200 vs 3800 kit, in general it seems the bigger l3 cache to a point can medicate the need for faster ram .No ddr5 tests though since no zen 3 can take ddr5 :p
     
  15. abula

    abula Master Guru

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    Pretty impressive 8000.... now which mobo will support it. I hope MSI releases Z790 Unify X with support for them.
     

  16. nosirrahx

    nosirrahx Master Guru

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    No I mean test an Intel platform that can take advantage of the speed but use games specifically that show massive gains on the 5800X3D over the 5800X.

    This test would see if the gains come from memory throughput or more specifically L3 cache.

    I honestly don't know what these tests would show, but it would be interesting.
     
  17. Horus-Anhur

    Horus-Anhur Ancient Guru

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    The advantage of the 580X3D is that it's L3 bandwidth is 600Gb/s. 5X faster than any DDR5. And much lower latency.
    The problem is that it's only 96MB and when it ends, it hits the DDR4. And this is half the speed of DDR5.
     
  18. Undying

    Undying Ancient Guru

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    Zen4 x3d is rumored to have three times more L3 cache. Sounds to good to be true. Maybe double.
     
    Last edited: Dec 2, 2022
  19. Carfax

    Carfax Ancient Guru

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    I have the G. Skill Trident Z5 DDR5 7200 CL34 which is currently sitting at DDR5 7600 CL36 at 1.4v. Any of the Hynix A die dimms are highly overclockable and tweakable so I don't think you'll get much more out of these.

    Wow that's some tweaked memory right there. What voltages are you using to get those timings so low? You've also overclocked the uncore. There's a caution in my Asus ROG z790 motherboards about overclocking the uncore as it can cause the CPU to overvolt so I haven't messed with mine at all.

    Here's my DDR5-7600 CL36 scores at 1.4v. What do you recommend I do to get the latency down below 60ns that doesn't involve a lot of voltage LOL!

    [​IMG]
     
  20. Carfax

    Carfax Ancient Guru

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    Zen 4 requires a 1:1 ratio of memory controller to memory frequency for optimal performance. Intel CPUs lock in at 1:2 ratio when running DDR5.

    So basically, a Zen 4 CPU cannot run DDR5-8000 in a 1:1 ratio as the uncore will not clock that high. The highest you'll see Zen 4 running DDR5 is at around DDR5-6200 or maybe 6400 if they have premium silicon.

    I mean, it can technically run DDR5-8000 speeds but only with a higher ratio and that will penalize performance negatively so it's not worth doing. With Intel CPUs, the uncore runs at a much higher frequency at stock. Raptor Lake's stock uncore is 4.6ghz which makes using high speed DDR5 much more impactful.

    Just so you know, @nizzen's DDR5 is heavily overclocked and tweaked and doesn't represent stock settings. Stock DDR5-8000 would be significantly slower.
     

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