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  • #31
    Thanks guys...I have one MSI X399 Pro Carbon as my sole X399 "reserve", plus my soho office has both an Asus X99-E-WS and Asus X79-E WS humming away at daily tasks. PLX is onboard w/ at least the Asus E WS mobos
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    • #32
      PLX on the motherboard won't necessarily help. I know that there were some modded x79 BIOS floating around that had PCIe bifurcation added. I'm not sure if ASUS ever enabled it in any of the official BIOS. PCIe bifurcation is common on server boards, but is really only common on X299, X399, and trx40 consumer boards. ASRock is really the best at this, and I was able to get a modded BIOS direct from ASRock support to allow me to run 4 GPUs plus an HBA and a NIC without using ridiculously expensive active PCIe splitters. About 2 months after ASRock sent me the modded BIOS, they added the various bifurcation configurations to the official BIOS.

      I'm pretty sure that the X99-E-WS doesn't support PCIe bifurcation, and if you use the passive M.2 expander card in that board, only the first NVMe drive will show up.
      Last edited by tictoc; 21-05-2020, 11:19 PM.
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      CPU
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      • #33
        ...well, a project for a rainy weekend ;-) In any case, the MSI X399 Creation, with which the Aoero 4-slot M.2 Xpander card came, obviously supports it, at least if I'm willing to give up some lanes of the secondary GPU. On the other hand, the Asus X99-E WS (pic / brief description below) comes not only with 4x PCIe 3.0 x16, but also with native M.2 NVME onboard...besides, unlike the MSI X399 Creation build (and the X79-E WS also in use), it currently doesn't have SLI GPUs installed anyway.

        On a related note, before I take the plunge, I should confirm that new 2TB M.2 NVME PCIe 4.0 drives will work in the (PCIe 3.0) MSI Aero Xpander, albeit with the drives in PCIe 3.0 mode only
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        • #34
          ...Finally had some time to play around with additional DDR4 speed settings (went to 32GB from 64GB for the tests, Aida pre-set in the bios, and 1.38v for the Samsung B-die for all settings). This TR2 2950X does have a very good IMC, so it will run quad-channel DDR4 3600 without drama, but the slightly looser primary timings negated any gains over the standard DDR4 3466 daily settings - basically, it's a tie. Also, this mobo / bios just doesn't seem to like DDDR4 3533...at all...ever...

          Here are the Aida 'read' results for ll three settings



          ...and some Aida64 'memory copy' results for 3466 and 3600:

          Last edited by J7SC_Orion; 22-06-2020, 04:13 AM.
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          • #35
            Originally posted by J7SC_Orion View Post
            ...Finally had some time to play around with additional DDR4 speed settings (went to 32GB from 64GB for the tests, Aida pre-set in the bios, and 1.38v for the Samsung B-die for all settings). This TR2 2950X does have a very good IMC, so it will run quad-channel DDR4 3600 without drama, but the slightly looser primary timings negated any gains over the standard DDR4 3466 daily settings - basically, it's a tie. Also, this mobo / bios just doesn't seem to like DDDR4 3533...at all...ever...

            Here are the Aida 'read' results for ll three settings



            ...and some Aida64 'memory copy' results for 3466 and 3600:
            What RAM do you have per chance ? I found that with Zen + getting 3600Mhz was possible with my GSkill Trident Z but it was not truly stable. I had to back it down to 3466Mhz as well. I just think you hit the IMC ceiling with anything above 3466Mhz. As we all know though, lower clock with tighter timings will beat out higher clocks so it is not a huge loss. 3200Mhz was the sweet spot for Zen+ so any higher is just a bonus IMHO.
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            CPU
            AMD Ryzen 9 3950X (16 Core/32 Thread) @ 4525/4500/4500/4350 (1.36v)
            Motherboard
            Asrock X570 Aqua (Run 783/999)
            GPU
            Quadro 1800 (Placeholder for 3080Ti Upgrade)
            Memory
            32GB Gskill Trident Z @3800Mhz (16/16/17/16/32)
            PSU
            EVGA 1600 Watt Supernova P2
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            1x 500GB Seagate Firecuda PCIe Gen4 (M.2)
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            1x 1TB Seagate Firecuda PCIe Gen4 (M.2)
            Cooling
            Custom WC
            Monitor
            Acer Predator X34 (Ultrawide)
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            Be Quiet Dark Base Pro 900 V2
            Operating System
            Windows 10 Pro X64
            CPU
            AMD Ryzen 2700X (8 Core/16 Thread)
            Motherboard
            Asrock X570 Phantom Gaming ITX BT3
            GPU
            MSI GeForce GTX 1660 Armour OC
            Memory
            16GB Corsair Vengeance 3200Mhz DDR4 CL16
            PSU
            Be Quite Power11 600 Watt
            Storage
            Kingston A2000 256GB M.2
            Storage
            Sandisk Ultra 2 1TB SSD
            Storage
            Toshiba X300 4TB HDD
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            Corsair Hydro H75 AIO
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            Thermaltake Core V1
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            • #36
              Originally posted by ENTERPRISE View Post

              What RAM do you have per chance ? I found that with Zen + getting 3600Mhz was possible with my GSkill Trident Z but it was not truly stable. I had to back it down to 3466Mhz as well. I just think you hit the IMC ceiling with anything above 3466Mhz. As we all know though, lower clock with tighter timings will beat out higher clocks so it is not a huge loss. 3200Mhz was the sweet spot for Zen+ so any higher is just a bonus IMHO.

              RAM is 'native' 3866 GSkill TridentZ GTZR for 'Z370'...I have 4 sets of that Sammy-B model which wonder between machines, depending on the specific work tasks. It was not even on the QVL list for the mobo, but that turned out to be a good thing...not using XMP but did it manually with lots and lots of testing, 3466 end result was awfully close to Ryzen Dram Calculator 'fast'settings. I can get error-free 3600 (so far) but only at 16-16-16 and looser secondaries etc...3466 at 14-14-14 is just a better, faster setting overall, as you suggest re. significantly tighter timings with only 133 MHz loss . Weirdly. 3533 is WORSE than 3600 - I guess the bios writers didn't really finalize that particular setting ?!



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              • #37
                Nice kit indeed, same as mine except mine was native at 3200Mhz (I did not go higher simply as I knew Zen+ had a ceiling that can easily be reached by overclocking). That being said I am able to OC this memory to 3733Mhz on the Zen 2 platform with the 3950X. Fantastic kits.

                It certainly improves performance by messing with the timings...sometimes a little more time consuming but all do able.
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                CPU
                AMD Ryzen 9 3950X (16 Core/32 Thread) @ 4525/4500/4500/4350 (1.36v)
                Motherboard
                Asrock X570 Aqua (Run 783/999)
                GPU
                Quadro 1800 (Placeholder for 3080Ti Upgrade)
                Memory
                32GB Gskill Trident Z @3800Mhz (16/16/17/16/32)
                PSU
                EVGA 1600 Watt Supernova P2
                Storage
                1x 500GB Seagate Firecuda PCIe Gen4 (M.2)
                Storage
                1x 1TB Seagate Firecuda PCIe Gen4 (M.2)
                Cooling
                Custom WC
                Monitor
                Acer Predator X34 (Ultrawide)
                Case
                Be Quiet Dark Base Pro 900 V2
                Operating System
                Windows 10 Pro X64
                CPU
                AMD Ryzen 2700X (8 Core/16 Thread)
                Motherboard
                Asrock X570 Phantom Gaming ITX BT3
                GPU
                MSI GeForce GTX 1660 Armour OC
                Memory
                16GB Corsair Vengeance 3200Mhz DDR4 CL16
                PSU
                Be Quite Power11 600 Watt
                Storage
                Kingston A2000 256GB M.2
                Storage
                Sandisk Ultra 2 1TB SSD
                Storage
                Toshiba X300 4TB HDD
                Cooling
                Corsair Hydro H75 AIO
                Case
                Thermaltake Core V1
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                • #38
                  I should have joined the shiny ram cool club too.. but eh

                  Hey ENTERPRISE is your 3950x capable of 1900IF? I see you have it at 1866 right now assuming 1:1. I was running 1866 but latest bios for my board forced me down to 1833 (on my 3700x)

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                  PSU
                  EVGA G2 850W
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                  Asus P5Q Pro
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                  • #39
                    Originally posted by SeriousDon View Post
                    I should have joined the shiny ram cool club too.. but eh

                    Hey ENTERPRISE is your 3950x capable of 1900IF? I see you have it at 1866 right now assuming 1:1. I was running 1866 but latest bios for my board forced me down to 1833 (on my 3700x)
                    Yes, I was able to run 1900IF with my RAM OC. However I did hit some instabilities, but that was not necessarily down to me hitting an IF ceiling. My RAM native speed is 3200Mhz and I have pushed it a fair way. So I may have hit the ceiling to my RAM OC as opposed to the IF. What I can say is that the 1900IF on the 3950X is certainly do able as it will boot into windows and work for the majority of tasks, but I was doing RAM tests specifically and I was getting errors here and there, as such I had to wind my IF and my RAM OC a step back to achieve 100% stability.
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                    CPU
                    AMD Ryzen 9 3950X (16 Core/32 Thread) @ 4525/4500/4500/4350 (1.36v)
                    Motherboard
                    Asrock X570 Aqua (Run 783/999)
                    GPU
                    Quadro 1800 (Placeholder for 3080Ti Upgrade)
                    Memory
                    32GB Gskill Trident Z @3800Mhz (16/16/17/16/32)
                    PSU
                    EVGA 1600 Watt Supernova P2
                    Storage
                    1x 500GB Seagate Firecuda PCIe Gen4 (M.2)
                    Storage
                    1x 1TB Seagate Firecuda PCIe Gen4 (M.2)
                    Cooling
                    Custom WC
                    Monitor
                    Acer Predator X34 (Ultrawide)
                    Case
                    Be Quiet Dark Base Pro 900 V2
                    Operating System
                    Windows 10 Pro X64
                    CPU
                    AMD Ryzen 2700X (8 Core/16 Thread)
                    Motherboard
                    Asrock X570 Phantom Gaming ITX BT3
                    GPU
                    MSI GeForce GTX 1660 Armour OC
                    Memory
                    16GB Corsair Vengeance 3200Mhz DDR4 CL16
                    PSU
                    Be Quite Power11 600 Watt
                    Storage
                    Kingston A2000 256GB M.2
                    Storage
                    Sandisk Ultra 2 1TB SSD
                    Storage
                    Toshiba X300 4TB HDD
                    Cooling
                    Corsair Hydro H75 AIO
                    Case
                    Thermaltake Core V1
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