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AB350 GAMING-ITX/AC and Corsair CMK16GX4M2B3000C15
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Burnhill View Drop Down
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    Posted: 23 Feb 2018 at 4:04am
Hi,

I have to be honest, I'm getting a bit lost with my Ryzen 5 1600, the AB350 GAMING-ITX/AC and Corsair CMK16GX4M2B3000C15 memory I'm running.

I've had some weird freezes, reboots and hangups so I decided to run MemTest86 to check if there was a problem with the two 8BG sticks I used.

I was surprised that I couldn't even finish a full test as first I would get about 2000 errors and finally freezing with [CPU Error] Could not start CPU 0 about 80% through the full test.

Now I'm confused, as I went and checked the memory compatibility with the AB350 GAMING-ITX/AC and realised that my specific ram is found under 'Memory QVL (Raven Ridge)' not 'Memory QVL'. Does this mean that the Corsair RAM I'm running is not compatible with the AB350 GAMING-ITX/AC if running Ryzen 5 1600? Only if I'm running Raven Ridge?

Also, would all this account for the errors I'm getting or is the RAM just busted? The whole system is only about 3 months old.

Thanks for the help.

PJ




Edited by Burnhill - 23 Feb 2018 at 4:29am
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chubalz View Drop Down
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Points: 78 		Post Options Post Options   Thanks (0) Thanks(0)   Quote chubalz Quote  Post ReplyReply Direct Link To This Post Posted: 23 Feb 2018 at 4:08am
what is your BIOS now?
Ryzen 5 1600 3.80ghz @1.3375v
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Burnhill View Drop Down
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BIOS is 3.6.

Also, any reason why MemTest86 gives this for the RAM?:

Total Physical Memory: 16454M (14274 MB/s)
  DIMM Slot #0: PC4-17000 DDR4 2134MHz / 15-15-15-36 /  
  DIMM Slot #1: PC4-17000 DDR4 2134MHz / 15-15-15-36 /

On this page it says:

Speed: 3000MHz
Tested Latency: 15-17-17-35
Voltage: 1.35V

Which I was expecting.... 


Edited by Burnhill - 23 Feb 2018 at 4:24am
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datonyb View Drop Down
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try these solutions
reseat the ram making sue its fully inserted

then test one stick at a time to see if its a bad stick
[url=https://valid.x86.fr/jpg250][/url]

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datonyb View Drop Down
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ps your ram needs the bios setting to be at xmp to run at 3000
[url=https://valid.x86.fr/jpg250][/url]

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JohnM View Drop Down
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Have you tried running MemTest in single thread mode?

I think that there are two memory QVLs because the default maximum speed has been raised from 2667 MHz to 2933 MHz for Raven Ridge. Strictly speaking, anything over 2667 MHz for your 1000-series Ryzen is an overclock, while anything over 2933 MHz for Raven Ridge is an overclock.
ASRock Fatal1ty AB350 ITX P4.90, AMD Ryzen 5 2400G, 2x8GB Corsair CMK16GX4M2A2666C16, 250GB Samsung 960EVO, 500GB Samsung 850EVO, 4TB WD Blue, Windows 10 Pro 64, Corsair SF450, Cooler Master Elite 110
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Burnhill View Drop Down
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Burnhill Quote  Post ReplyReply Direct Link To This Post Posted: 23 Feb 2018 at 5:25am
Thanks for the replies guys. I've set the RAM to 2933 which is apparently the supported speed for these sticks on this MOBO. The BIOS shows the new speed correctly but MemTest86 still shows them as 2134MHz and 15-15-15-36 rather than the 15-17-17-35 I set them to in BIOS.

Just running single thread to see what happens.
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Burnhill View Drop Down
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Originally posted by JohnM JohnM wrote:

I think that there are two memory QVLs because the default maximum speed has been raised from 2667 MHz to 2933 MHz for Raven Ridge. Strictly speaking, anything over 2667 MHz for your 1000-series Ryzen is an overclock, while anything over 2933 MHz for Raven Ridge is an overclock.

Does that mean I should run it at 2667 MHz if I wanted to run it at 'stock' speeds on my CPU? Only go 2933 if I wanted to push it?
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JohnM View Drop Down
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Yes, I believe so. By choosing 2933 MHz you're "overclocking" the Ryzen's memory controller and a lot of other stuff too, including the Infinity Fabric. The only reason I can think of why you would want to revert to "stock" though is to set a baseline for some benchmarking you plan to do. Since you've bought the faster memory and you can run it at 2933, then why wouldn't you?
ASRock Fatal1ty AB350 ITX P4.90, AMD Ryzen 5 2400G, 2x8GB Corsair CMK16GX4M2A2666C16, 250GB Samsung 960EVO, 500GB Samsung 850EVO, 4TB WD Blue, Windows 10 Pro 64, Corsair SF450, Cooler Master Elite 110
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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: 23 Feb 2018 at 5:46am
as i can see from your memtest results, u dont have random errors, it seems u get errors at exact same bit (2nd bit from right)
this could be resolved with subtimings (tfaw, twrt, tref...etc)

but before that, try to reduce freqency a bit to see if there will be any change.
if there wont be any changes, then signal between cpu n ram is unstable which could be resolved with voltages/resistances


Edited by kerberos_20 - 23 Feb 2018 at 5:49am

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