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Can't exceed 2800MHz RAM speed
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LogicIsArt View Drop Down
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Joined: 25 Oct 2018
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    Posted: 25 Oct 2018 at 12:32am
Hi there,

recently I got myself a new rig:

ASRock X370 Fatal1ty Professional Gaming
AMD Ryzen 7 1800X
ASRock RX Vega 56 8 GB
16 GB G.Skill X-Flare

There's one problem though. I can't get the RAM to work at 3200MHz. Whenever I try to set it beyond 2800, the PC won't start and instead boots for 3-4 times in a row, resetting RAM speed.

How can I make sure the RAM stays at 3200 MHz?

Kind regards
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xhue View Drop Down
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Points: 634 		Post Options Post Options   Thanks (0) Thanks(0)   Quote xhue Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2018 at 1:39am
1st - update to latest BIOS. Sometimes ASRock's beta versions are better than the mainstream ones...
2nd - make a total CMOS reset.
3rd - check all the cabling and components. Better re-seat everything. Make sure the 2 sticks of RAM are in the correct slots (check with manual for more info).
4th - open UEFI and set ONLY the XMP profile. Save and reboot.

Report back after all this. I'm yet to see a Flare-X kit under-perform, even on an ASRock. Basically, these kits are the ones to have if you want fast RAM for Ryzens.
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LogicIsArt View Drop Down
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hi xhue,

I did upgrade my BIOS to 4.80 and did reset the board afterwards.
I placed the sticks at slots number 2 and 4 from the cpu socket.
I did not change any settings at BIOS at all, except for AMD-V for VMWare.

Sadly, the system still won't start with the XMP profile Cry
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gizmic View Drop Down
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Points: 677 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gizmic Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 2018 at 4:32pm
these are CL 14 kits or CL 16 kits

assuming the ram works perfectly it should be the cpu that can't handle it try push the soc to 1.1v


Edited by gizmic - 26 Oct 2018 at 4:35pm
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LogicIsArt View Drop Down
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Hi gizmic,

the G.Skill RAM is a cl 14 kit.

I pushed the soc to 1.1. Afterwards, the system restarted and the RAM where indeed clocked at 3200mhz.
However I got stuck at boot whenever I restart my pc. After three or so unsuccessful boots, the system starts with the ram at 2400mhz again. When I get in the BIOS menu after the many failed boots, I can set the RAM speed at 3200mhz again and the system will start with the set clock.

This is extremely annoying. Not only forces it me to manually set RAM speeds at every startup, it also increases boot time. Unhappy
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gizmic View Drop Down
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thats a good sign so you have to figure out which settings would make your kits stable till you dont have to manually change all the time. 

you can also set the soc back to auto and try the ram voltages at 1.40 and see how it goes its just strangely you cant run xmp but those how the computer lottery works 
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SoniC View Drop Down
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Use the RyZEN Memory Calculator to make your RAM stable.
This is quite easy now.
-=SoniC=-
TR x1950, ASRock X399 FPG (v. 3.33A), G.Skill 3200 CL14 64GB, Enermax LiqTech 280,
AMD Vega 64 LC, 10x HDDs (mostly Hitachi), 2x M.2 (970EVO,960Pro), Xonar DX, AX1200i PSU
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fnordie View Drop Down
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do yoursef a favor and get it back to the shop. 
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Originally posted by SoniC SoniC wrote:

Use the RyZEN Memory Calculator to make your RAM stable.
This is quite easy now.


It should be said that even the safe timings aren't guaranteed to be stable, so this might not help at all.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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Originally posted by LogicIsArt LogicIsArt wrote:

There's one problem though. I can't get the RAM to work at 3200MHz. Whenever I try to set it beyond 2800, the PC won't start and instead boots for 3-4 times in a row, resetting RAM speed.

How can I make sure the RAM stays at 3200 MHz?


There's no guaranteed way to make sure, as your CPU might have a weak memory controller that prevents getting the most out of your RAM. Have you overclocked you CPU or are you running it at stock settings? If you haven't touched the CPU settings, I would try setting the voltage manually to something like 1.3V to see if that would help stabilize the whole thing.
Ryzen 5 1500X, ASRock AB350M Pro4, 2x8 GB G.Skill Trident Z 3466CL16, Sapphire Pulse RX Vega56 8G HBM2, Corsair RM550x, Samsung 960 EVO SSD (NVMe) 250GB, Samsung 850 EVO SSD 500 GB, Windows 10 64-bit
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