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View Full Version : New Strix Z590-E Dead M.2 slot?



BamaInArk
03-12-2021, 01:12 AM
Just got a new Strix Z590-E Gaming Wifi board. Installed an i9-10850k. 4 M.2 slots. M2_1 slot is disabled for 10th Gen. Only works with 11th Gen. Installed working NVMe drive in M2_2 slot but not detected. Tried M2_3 and M2_4 slots and it works fine. Tried 2 seperate NVMe drives.
I'm not sure if I have a bad board or there is some setting in the bios. Nothing I can find.

Falkentyne
03-12-2021, 03:43 AM
Just got a new Strix Z590-E Gaming Wifi board. Installed an i9-10850k. 4 M.2 slots. M2_1 slot is disabled for 10th Gen. Only works with 11th Gen. Installed working NVMe drive in M2_2 slot but not detected. Tried M2_3 and M2_4 slots and it works fine. Tried 2 seperate NVMe drives.
I'm not sure if I have a bad board or there is some setting in the bios. Nothing I can find.

Hi.
Two of the m.2 slots are from the CPU and two are from the chipset.
The CPU lanes are shared with the PCIE Express graphics slots, so you need to actually enable the CPU to "bifurcate" those lanes, so they are not enabled by default. This will take lanes from your video card or potentially disable the second X16.

Go to onboard devices configuration.

BamaInArk
03-12-2021, 04:51 AM
Hi.
Two of the m.2 slots are from the CPU and two are from the chipset.
The CPU lanes are shared with the PCIE Express graphics slots, so you need to actually enable the CPU to "bifurcate" those lanes, so they are not enabled by default. This will take lanes from your video card or potentially disable the second X16.

Go to onboard devices configuration.

Thanks. That was it. I saw those settings during my search for a solution but wasn't quite sure of the settings. I was aware of the 2 slots on the CPU and the 2 on the Chipset. I'll have to dig a little deeper to understand. I was just testing the board/cpu combo on a test bench using only the iGPU so no Graphics Card installed.
AMD seems to have a better lead on this.

Mike43
03-12-2021, 07:19 PM
Hi.
Two of the m.2 slots are from the CPU and two are from the chipset.
The CPU lanes are shared with the PCIE Express graphics slots, so you need to actually enable the CPU to "bifurcate" those lanes, so they are not enabled by default. This will take lanes from your video card or potentially disable the second X16.

Go to onboard devices configuration.

Do you know the specific setting? I went through the bios, and wasn't able to find it.
Thanks.

EncodeGR
03-12-2021, 07:38 PM
Advanced -> Onboard Devices Configuration -> CPU PCIE Configuration Mode

Mike43
03-22-2021, 09:13 PM
Advanced -> Onboard Devices Configuration -> CPU PCIE Configuration Mode

Thanks, appreciated!

ThomasRhin
03-24-2021, 05:58 PM
Just got a new Strix Z590-E Gaming Wifi board. Installed an i9-10850k. 4 M.2 slots. M2_1 slot is disabled for 10th Gen. Only works with 11th Gen. Installed working NVMe drive in M2_2 slot but not detected. Tried M2_3 and M2_4 slots and it works fine. Tried 2 seperate NVMe drives.
I'm not sure if I have a bad board or there is some setting in the bios. Nothing I can find.

M.2 to PCIe adapter would be helpful too.

MrAgapiGC
03-25-2021, 04:32 PM
The m2-2 is active only when you make on bios. That is shared with PCIe 1 and 2. Since use the cpu same as yours, PCIe drops to 8x. The manual does not say but it does on the hero. I have no idea if 11th intel is on use will be better. Since manual is clear on hero. Now I working on the new bios since was push today and as far is worst. I can not see 5.0 on auto and I think my cpu is one of those with bad luck since SP is 56points since is related on temps I can start working on thermal paste and since test are up there is nothing wrong with cpu "intel notes on test" I am new on the se platform is a new learning curve

Mike43
03-30-2021, 08:20 PM
The m2-2 is active only when you make on bios. That is shared with PCIe 1 and 2. Since use the cpu same as yours, PCIe drops to 8x. The manual does not say but it does on the hero. I have no idea if 11th intel is on use will be better. Since manual is clear on hero. Now I working on the new bios since was push today and as far is worst. I can not see 5.0 on auto and I think my cpu is one of those with bad luck since SP is 56points since is related on temps I can start working on thermal paste and since test are up there is nothing wrong with cpu "intel notes on test" I am new on the se platform is a new learning curve

Doesn't z590 have 20 PCIe 4.0 lanes? That's 4 for the M2 SSD, and 16 for the GPU card. You should be able to use both at the same time, and get 16x on the GPU - right?

Ataemonus
03-31-2021, 01:18 AM
Lol, no.

Kenrun
08-24-2021, 12:05 PM
I too have a z 590e motherboard the second slot not read with a 980pro 4 0. I9-11900k. Wii the bios correct this problem.

randomdud3213
09-02-2021, 02:32 AM
I too have a z 590e motherboard the second slot not read with a 980pro 4 0. I9-11900k. Wii the bios correct this problem.

there's a certain setting in the bios that allows the m.2_2 to work, but it will make your GPU run at x8 speeds. I think it's better off just using the first slot and the last two slots if you can.

nailmaker
09-06-2021, 10:56 PM
i too have just noticed this as i just got my maximus xiii hero with i9 11900k cpu.. i have 4 m.2 slots on mb.. since im running a 11th gen cpu im able to use the m.2_1 slot.. and like was said if you enable the bios under advanced/onboard device config.. pcie to say pciex8+pciex8+ m.2_2 your x16 slot turns into a x8 slot.. so i put my other nvme drive in m.2_3.. i am posting my own thread on what im running into on my hero board.. adding cards disables all sorts of stuff.. mostly sata drives. but yes.. if you enable the m.2_2 slot your x16 turns into an x8 which for me was unacceptable since i just spent a ton of cash on a evga 3080ti ftw and didnt want it not running at what it is supposed to run at. i believe all the 590 boards are this way... hope that helped.

Ataemonus
09-06-2021, 11:24 PM
You simply fail to understand how PCIe lanes allocation works.

MrAgapiGC
09-12-2021, 03:37 PM
Doesn't z590 have 20 PCIe 4.0 lanes? That's 4 for the M2 SSD, and 16 for the GPU card. You should be able to use both at the same time, and get 16x on the GPU - right?

No.
The Pcie lanes are given by the intel 11th gen cpu that has 20 lanes. not the board

Note: the board read pcie4.0 on the gpu, but will run in 3.0 speed with 10th gen.