No boot when i enable XMP

[Grimy_RIck]

Just built my new PC bar the fact that my RTX 3080 and 5900x are both still on back order, so i bought a 3400g just so i could get everything up and running and get back online, problem is when i enable XMP the system tries to boot 2 times then boots in safe mode, any ideas ?

Specs

Strix X570-E Mobo
Corsair RM850x Psu
Ryzen 3400g Cpu
Corsair Vengence 3200 4x8gb

Thanks in advance peeps

[Omega]

Zen+ CPUs often have issues with going above 2666Mhz. Enable XMP, manually set the speed of the memory to 2666Mhz and it will boot. Do this as a work-around until you swap the CPU.

Don't forget to update the BIOS before swapping the CPU.

[Grimy_RIck]

Originally posted by Omega:

Zen+ CPUs often have issues with going above 2666Mhz. Enable XMP, manually set the speed of the memory to 2666Mhz and it will boot. Do this as a work-around until you swap the CPU.

Don't forget to update the BIOS before swapping the CPU.

Thanks for your very quick and very helpful advice this has done the trick

[Bad 💀 Motha]

Use 2x 16gb 3200, never 4x anything.

Download and extract latest bios to your Win10 usb flash drive and update bios first. Always do that when any board is new.

[Illusion of Progress]

Originally posted by Bad 💀 Motha:

Use 2x 16gb 3200, never 4x anything.

Never? This is overstated; I'm using 4 RAM modules and it works fine, as it has on my last 3 or 4 systems. If your board has 4 RAM slots it'd be silly to intentionally not use them if, say, you needed more RAM.

[Bad 💀 Motha]

Well OP needs to update bios first and see if that addresses the issue. Many boards can't use 4 dimms above a certain speed.

Also I'd try each ram one at a time, not all 4 at the same time. See that each works on 3200mhz XMP first.

[Grimy_RIck]

Update, so in my mission to get this ram running at 3200mhz, i have removed 2 sticks and it did not boot at all not even to bios, so i took the other 2 out instead and it booted, i then enabled XMP and hey presto it booted, so i think 1 of the other 2 sticks is faulty, i may do some more testing and update in the next few days.

[Omega]

Originally posted by Grimy_RIck:

Update, so in my mission to get this ram running at 3200mhz, i have removed 2 sticks and it did not boot at all not even to bios, so i took the other 2 out instead and it booted, i then enabled XMP and hey presto it booted, so i think 1 of the other 2 sticks is faulty, i may do some more testing and update in the next few days.

On AMD Zen processors the more modules you install the lower the maximum supported clockspeed will become. With 4 modules on a Zen+ CPU I believe the maximum speed AMD guarantees to work is 2133Mhz.

More modules put more stress on the CPUs memory controller.

That is why you shouldn't get more then 2 modules.

Your PC not booting after you removed the modules was likely it still trying to run the previously known good hardware configuration. A BIOS reset should get it to boot when it does this.

[Bad 💀 Motha]

Like I said, test them one at a time first.

[Grimy_RIck]

Originally posted by Omega:

Originally posted by Grimy_RIck:

Update, so in my mission to get this ram running at 3200mhz, i have removed 2 sticks and it did not boot at all not even to bios, so i took the other 2 out instead and it booted, i then enabled XMP and hey presto it booted, so i think 1 of the other 2 sticks is faulty, i may do some more testing and update in the next few days.

On AMD Zen processors the more modules you install the lower the maximum supported clockspeed will become. With 4 modules on a Zen+ CPU I believe the maximum speed AMD guarantees to work is 2133Mhz.

More modules put more stress on the CPUs memory controller.

That is why you shouldn't get more then 2 modules.

Your PC not booting after you removed the modules was likely it still trying to run the previously known good hardware configuration. A BIOS reset should get it to boot when it does this.

Correct again Omega, i tried the other two sticks again on their own and they worked at 3200, i also swapped them in to the other 2 slots and it still worked so no slot issues, hopefully it will work ok when i swap out for the 5900x, wish i had just got 2 16gb sticks now, i only got the 4x8gb so i could fill all the slots with RGB ram.

[_I_]

may be the cpus imc not being able to handle higher freq with 4 dimms
test each dimm one at a time in each slot