Question PC shuts down completely during Prime95 ram test

[kenj1ng]

I just upgraded my cpu from r3 3200g to r5 5600 on a A320m motherboard. I have 2x 8gb ddr4 3200mhz memory (Kingston fury)

On default bios setting (3200)
Dual channel the pc starts but no input
Single stick i'm able to get into windows and ram test runs fine(ran it for 3 mins then stop it, idk it could run for longer or not, but it doesn't shut down)

With manual Underclock, the PC runs fine
But when i try Prime 95 "memory controller & ram" torture test
I set to 2800 dual channel, it runs 20sec then shutdown
2666 runs for 30sec
2400 runs for a minute
2133 runs for 3 minute

Here's the full spec :
mobo : Asrock a320m-hdv r4.0
CPU : Ryzen 5 5600
RAM : 2x 8gb Kingston Hyperx fury 3200mhz
GPU : Rx 560xt /rx 470d ( it only used 75w)
PSU : MSI a650bn
1 sata ssd (128gb) & 1 nvme ssd (500gb)
1 harddisk

I ran other torture/stress tests like the cpu and gpu it doesn't cause shutdowns

 

[Lutfij]

Welcome to the forums, newcomer!

GPU : Rx 560xt /rx 470d ( it only used 75w)
You will need elaborate on this.

mobo : Asrock a320m-hdv r4.0
BIOS version for your motherboard?

I have 2x 8gb ddr4 3200mhz memory (Kingston fury)
Did you purchase them at the same time or did you get them a few months apart?

PSU : MSI a650bn
How old is the PSU in your build?

 

[NightHawkRMX]

Would recommend a bios update to the latest version to improve memory compatibility. It may help solve this instability issue.

 

[kenj1ng]

Welcome to the forums, newcomer!

GPU : Rx 560xt /rx 470d ( it only used 75w)
You will need elaborate on this.

mobo : Asrock a320m-hdv r4.0
BIOS version for your motherboard?

I have 2x 8gb ddr4 3200mhz memory (Kingston fury)
Did you purchase them at the same time or did you get them a few months apart?

PSU : MSI a650bn
How old is the PSU in your build?

The gpu is a Aisurix RX 560XT, there's not much info but it basically a bios updated rx470d

The Bios ver was 7.20 with AGESA 1.2.0.7

I got the ram for like a 1&1/2 year ago before i got the cpu and gpu. The whole pc was a 3200g prebuilt.
Back then with the old cheap korean PSU i can run the pc with 2999mhz speed. It never shutdown when gaming i never ran a stress test that time

I just bought the MSI PSU today, because i have this issue for about a week ago right after the cpu upgrade. It happens when i try to play cs2
It runs fine for 30min then it shutdown midgame.
After that i try to Underclock the ram & disable CPU boost clock. It didn't shutdown when gaming & the pc was stable

Then I try to compile shaders on a Unreal Engine project that i have, It shuts down again . I then lower my ram again just to finish the compiling. Then i run some ram test. It still shutdown itself

 

[Roland Of Gilead]

Hey there,

TBH, I wouldn't be running Prime or any torture test with an A320 mobo. They have weak VRM's are not meant to be pushed like that. Why are you using Prime?

For the game crashes. Something is not stable. Take off the undervolt and or any other OC's you have going and run at stock.

As suggested, make sure you have a new bios, as older ones won't support your CPU. You must also clear CMOS after the bios update.

 

[kenj1ng]

https://www.asrock.com/mb/amd/a320m-hdv r4.0/index.asp#BIOS

According to Asrock website my ryzen 5000 was already supported since 7.1, I updated the bios to 7.2 ever since i have this issue.
Im thinking i should update to L8.01 with the AGESA 1.2.0.8 cuz the latest ver 10 is still on beta that might cause more issues.

But right now with my ram underclocked to 2666mhz and CPU boost clock (PBO) turned OFF, The PC runs fine gaming and all.

Can you suggest other way to test my system stability other than using Prime?

I understand now the main issue is my motherboard's VRM
because with my old 3200g it only go for 3.8Ghz , but 5600 go for 4.4Ghz so i have to turn PBO Off.

also if reset my bios to stock/auto settings it will set my ram to 3200mhz 1.2v cl22. and it just will not boot to windows, It starts but no input (just black screen) like it's a ram problem. So i have to take 1 ram stick out and manually underclock the ram to anything under 2993mhz just to boot to windows, then shut it down & put the ram back.

 

[Misgar]

But right now with my ram underclocked to 2666mhz

Technically speaking, you're still overclocking your RAM at 2666MT/s (1333MHz true clock speed).

If you can set the RAM to 2133MT/s, chances are that's the stock (non-overclocked) JEDEC speed. Anything faster than JEDEC counts as overclocking (in my book).

On default bios setting (3200)
Dual channel the pc starts but no input

CPU-World shows the 5600 should be able to run at DDR4-3200 speeds.
https://www.cpu-world.com/CPUs/Zen/AMD-Ryzen 5 5600.html

also if reset my bios to stock/auto settings it will set my ram to 3200mhz 1.2v cl22.

Are you 100% sure the voltage is 1.2V at 3200MT/s? I'd expect any XMP overclock to increase DDR4 RAM voltage to a nominal 1.35V, the "normal" voltage for speeds above stock 2133/2400 DDR4 JEDEC.

I know you have Kingston RAM but I found this on the Corsair web site and it should apply to Kingston.

https://help.corsair.com/hc/en-us/articles/360052448851-RAM-Tips-on-safely-overclocking-memory
"By default, DDR4 runs at 1.2v, while many memory module kits are rated to run at around 1.35v with XMP. Raise your voltage slowly until your system is stable; we recommend not going above 1.4v to be safe."

If your RAM truly is still set to 1.2V at 3200MT/s, it's not surprising the system fails to POST. The BIOS should automatically set a nominal 1.35V, as soon as you select an XMP setting. You need more Volts for more MHz.

If necessary, set the RAM voltage manually to 1.35V at DDR4-3200, before saving the BIOS settings.

manually underclock the ram to anything under 2993mhz just to boot to windows

I couldn't get an old Ryzen 2600X to POST with DDR-3000 RAM. The 2600X is only rated up to DDR4-2933, but I "fixed" the problem by increasing the CL(CAS) value for both DIMMs from 18 to 20 at 3000MT/s (actual memory clock frequency of 1500MHz).

In your case, if 1.35V on the RAM doesn't fix things, try CL=23 or CL=24 at DDR4-3200. You'll need to dive into the manual settings to adust CL, after choosing DDR4-3200 in the main menu.

 

[kenj1ng]

If your RAM truly is still set to 1.2V at 3200MT/s, it's not surprising the system fails to POST. The BIOS should automatically set a nominal 1.35V, as soon as you select an XMP setting. You need more Volts for more MHz.

https://imgur.com/a/LKs2Pja

No, Actualy when i reset CMOS it will set to #1JEDEC 1.2v 3200mhz CL22 so i have to take 1 ram stick out and run it single stick THEN it can boot normally.

In your case, if 1.35V on the RAM doesn't fix things, try CL=23 or CL=24 at DDR4-3200. You'll need to dive into the manual settings to adust CL, after choosing DDR4-3200 in the main menu.

i'm not sure i wanted to do that...
my mobo VRM is REALLY WEAK, its an a320"M" (the microATX one).
I think i'm fine at 2666

 

[Misgar]

No, Actualy when i reset CMOS it will set to #1JEDEC 1.2v 3200mhz CL22

Thanks for the screen shot. Very useful and not the same as my old A320M motherboards, because your BIOS has two settings for 3200MT/s. One with loose timings of 22-22-22-52 @ 1.20V and one with an XMP setting of 18-18-18-36 @ 1.35V.

Note the much faster 18-clock cycle timings at 1.35V at 3200MT/s versus the slower 22-clock cycle settings for 1.20V. Fewer clock cycles equals faster memory.

You should find the PC feels slightly faster at 18-18-18-52 than at 22-22-22-36. If you have a trial copy of AIDA64, measure the Memory Benchmark tests (Read, Write, Copy, Latency) at stock 2133MT/s and whatever overclock you achieve. It's not a huge difference, but every little helps and can make an old machine more useable.

If you don't want to run the XMP 1.35V 3200MT/s setting and the non-XMP 1.20V 3200MT/s setting is unstable, raising the tCL(CAS) setting from 22 clock cycles to 23 (or even 24) will not change RAM power consumption. Increasing the number of tCL clock cycles will slow the memory down fractionally and not cause any harm, but might fix the stability issue at 3200MT/s. You also have the same option at 2933MT/s.

my mobo VRM is REALLY WEAK, its an a320"M" (the microATX one).

I've got several old A320M mATX motherboards and they all work fine with XMP at 1.35V.

Yes, the extra 0.15V will stress the RAM and the Integrated Memory Controller channels in the CPU by a small degree, but the I doubt you'll worry if your system potentially fails 10 years from now (with XMP enabled), instead of 11 years from now (without XMP). Something else might happen in the mean time.

I think i'm fine at 2666

That's great. No point in worrying about a few extra percent speed improvement, achieved by overclocking RAM to the max.