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Asrock b450 pro4 - Ram stuck at 2133mhz
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Kururu303 View Drop Down
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    Posted: 21 Feb 2020 at 10:43pm
Hi, i have a problem with ram (PVR416G320C6K). Mobo Asrock b450 pro4 (firmware 3.50) and cpu Ryzen 5 2600x. I cant get RAM to clock at 3200, it stuck at 2133 mhz. I tried the default xmp profile (16-18-18-19-36) but doesnt work (reboot 3 times and then reset bios). Then i tried the set given by dram calculator for ryzen, but the result is the same (i tried 1.35V, 1.36V and 1.37V). The ram is QVL. I tried 2400-2666-2933 mhz but doesnt work. Could you help me? (sorry for english, is not my first language). Thanks in advance!
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2 or 4 sticks?
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2 sticks in A2 and B2 slots.
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leave at 2133 and flash BIOS to the 3.90 version .. after it reboots from flashing, then try different mem speeds and see what happens. Per one of the mods here, you can disregard the *ASRock do NOT recommend updating this BIOS if Pinnacle, Raven, Summit or Bristol Ridge CPU is being used on your system. warning and even said they were going to talk to whoever to try and get that warning taken off of the website as it's very misleading.
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..if that don't cut it, then you can either try different ram (QVL or not) or you just might have a dud memory controller on your 2600x
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Originally posted by ThreeDee ThreeDee wrote:

..if that don't cut it, then you can either try different ram (QVL or not) or you just might have a dud memory controller on your 2600x

I updated the bios but nothing. I tried only one ram stick in A2 and in this way i can enable the XMP (3200 mhz) but then if i put the second stick in b2, the problem returns. Is the problem in mobo or in the cpu?
I tried another ram (lpx 3000 mhz) but unfortunately i have the same problem.
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Ray62 View Drop Down
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What RAM exactly are you using?
Did you use the DRAM calculator correctly with these exact DRAM infos from Typhoon burner and the other settings?

Post all these infos (screenshots from typhoon burner and DARAM calculator).
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Originally posted by Ray62 Ray62 wrote:

What RAM exactly are you using?
Did you use the DRAM calculator correctly with these exact DRAM infos from Typhoon burner and the other settings?

Post all these infos (screenshots from typhoon burner and DARAM calculator).

Yes, i used DRAM info correctly. Info:
[url=https://ibb.co/fH5cC6n][/url]
[url=https://ibb.co/bsHvXSx][/url]
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Ok.
I had these problems too in the past. The calculators Safe settings are sometimes not really safe.

You can try these settings, but set the DRAM frequency a bit lower in the bios (3133, 3066, 3000 ...).

Or use the calculators Profile V2 for safer settings.

And double check the values in the bios == calculator settings.

Yes, sometimes it takes a while to find working settings.

Here is a thread for this H5AN8G8NCJR-TFC RAM:
https://www.hardwareluxx.de/community/threads/hynix-8gbit-ddr4-cjr-c-die-h5an8g8ncjr.1206340/
Mostly in german, but some postings also in english.
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Originally posted by Ray62 Ray62 wrote:

Ok.
I had these problems too in the past. The calculators Safe settings are sometimes not really safe.

You can try these settings, but set the DRAM frequency a bit lower in the bios (3133, 3066, 3000 ...).

Or use the calculators Profile V2 for safer settings.

And double check the values in the bios == calculator settings.

Yes, sometimes it takes a while to find working settings.

Here is a thread for this H5AN8G8NCJR-TFC RAM:
https://www.hardwareluxx.de/community/threads/hynix-8gbit-ddr4-cjr-c-die-h5an8g8ncjr.1206340/
Mostly in german, but some postings also in english.

Thanks. The problem is that even if I put 2133mhz instead of auto (without modify timing), the system fails. Why?
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