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x570 Phantom Gaming 4 full 2x PCIe 16x£
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lXndr View Drop Down
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    Posted: 18 Apr 2022 at 8:17am
Good day.
The Asrock x570 Phantom Gaming 4 has 2 PCIe 16x connectors. Can I use both at the same time with full speed? I know from other models that the two connections are reduced to 8x when they are both in use.
I want to install an Asus Hyper M.2 X16 Card (4x M.2 SSDs trough PCIe 16x).
How will this affect my 2 M.2 SSDs installed directly on the motherboard? (see specs)
Information to the other PCIe 1x connetcors would be nice.
What SATA ports (1-8) should i use for this configuration; wich don't affect the PCIe lanes?

Sys Specs:
CPU: AMD 5800X (has 24 PCIe-Lanes)
Ram: 32GB (2x 16GB) ADATA XPG Gammix D20
Gfx: GTX 1060 (will be changed soon to a newer)
2x M.2 on mainboard: Crucial P2 CT250P2SSD8 (1 sys, 1 apps) will be changed to Nvme 1.4 (PCIe gen 4) later
2x Sata SSDS (games), 2x Sata HDDS (music/movies/data), 1x DVD

Thanks in advance
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Xaltar View Drop Down
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Points: 22748 		Post Options Post Options   Thanks (1) Thanks(1)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 18 Apr 2022 at 1:49pm
No, your PCIe1 slot is x16 and the PCIe3 slot is x4. Though PCIe3 is physically
an x16 slot it is electrically wired as x4 and is provided it's PCIe lanes from
the X570 chipset rather than the CPU.

Quote
Slots
AMD Ryzen series CPUs (Vermeer, Matisse)
- 1 x PCI Express 4.0 x16 Slot (x16 (PCIE1))*
AMD Ryzen series CPUs (Cezanne, Renoir, Pinnacle Ridge)
- 1 x PCI Express 3.0 x16 Slot (x16 (PCIE1))*
AMD Ryzen series CPUs (Picasso)
- 1 x PCI Express 3.0 x16 Slot (x8 (PCIE1))*
AMD X570 Chipset
- 1 x PCI Express 4.0 x16 Slot (x4 (PCIE3))*

- 2 x PCI Express 4.0 x1 Slots


The top most x16 slot will operate at x16 with a 5800x and the lower x16 slot
is limited to x4. The lower slot is however PCIe 4.0 so performance wise it will
have nearly identical performance to a PCIe 3.0 x8 slot.

If you plan to use high speed PCIe NVMe drives (PCIe 4.0) then I would put your
Hyper M.2 card in the top slot and your 1060 in the lower one. The PCIe 4.0 x4
lower slot will not bottleneck a GTX 1060. If you are planning on getting a new
GPU that is faster than an RTX 2060 then you will want it in the top PCIe x16 slot.

I am not sure about the specs of the Hyper M.2 card or it's requirements but I
wouldn't use one with your board unless you can give it the full x16 lane slot.
The x570 Phantom Gaming 4 is on the budget end of ASRock's X570 lineup. You would
ideally want a higher end board with 3 x16 slots but even then, you would likely
be limited to x8 + x8 with 2 slots in use using PCIe x16 unless you use the lowest
x16 (x4) slot for your GPU.

This is why HEDT (High End Desktop) systems have so many more PCIe lanes. X399
TR40 etc.
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Bikergofast View Drop Down
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Points: 55 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bikergofast Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2022 at 12:16am
Did you figure this out? When I tried running an nvme drive in an expansion card in the lower pci slot it disabled my LAN port on the x570 phantom gaming 4.
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RynLikeTin View Drop Down
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Points: 30 		Post Options Post Options   Thanks (0) Thanks(0)   Quote RynLikeTin Quote  Post ReplyReply Direct Link To This Post Posted: 25 Apr 2022 at 3:02am
It depends on the CPU you are using. As you said:
Quote (has 24 PCIe-Lanes)
so no you will not be able to use 2 16x connectors at full speed, as that would be 32 lanes.
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lXndr View Drop Down
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Points: 35 		Post Options Post Options   Thanks (0) Thanks(0)   Quote lXndr Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2022 at 12:47am
Bikergofas:
As Xaltar answered, its not a good idea to use this extension card, if i upgrade my GFX, the Myper M.2 card will only run at 4x speed.


Anyway, do anyone knows, wich SATA ports go directly to the chipset and wich go trough PCIe lanes?
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kerberos_20 View Drop Down
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Points: 3657 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kerberos_20 Quote  Post ReplyReply Direct Link To This Post Posted: 15 May 2022 at 6:56pm
all sata ports goes to chipset pcie lanes
cpu has sata controller aswell, but that is usualy wired for m2 sata slot

if you need more x16 lanes, then you may want to look for other platforms like sTRX40
trx40 taichi

Edited by kerberos_20 - 15 May 2022 at 7:02pm

userbenchmark
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