3333 Ddr4 ram only displays 2400Mhz

217

01-05-2018, 10:57 AM

I built a fresh system:
Motherboard Asus tuf B450m Pro Gaming
Ryzen 7 2700
32GB DDR4 RAM at 3333Mhz, Kingston, HyperX Predator cl16.
The B450m Pro Gaming claims OC up to 4000Mhz in RAM. The RAM sticks are brand new and purchased together. The Asus Bios show 2400Mhz, but I can only reach up to 2800Mhz before it becomes unstable.
Anyone can assist a beginner with this RAM issue? Thanks ahead.

CalculatorD

01-05-2018, 10:57 AM #1

Puppzi
Member

209

01-05-2018, 06:46 PM

The memory is located in slots A2/B2 and DOCP. For the ASUS version, XMP must be activated in the BIOS. This ensures the memory operates at 3200 MHz or 3466 MHz, as 3333 MHz isn't supported.

Puppzi

01-05-2018, 06:46 PM #2

The memory is located in slots A2/B2 and DOCP. For the ASUS version, XMP must be activated in the BIOS. This ensures the memory operates at 3200 MHz or 3466 MHz, as 3333 MHz isn't supported.

liamrocks911
Junior Member

01-10-2018, 06:38 PM

There are numerous posts about memory problems with Ryzen. It might help to run the memory at 2800.

liamrocks911

01-10-2018, 06:38 PM #3

There are numerous posts about memory problems with Ryzen. It might help to run the memory at 2800.

Nickroy1
Junior Member

01-10-2018, 07:46 PM

Do you have 2 or 4 RAM modules? A pair of 3200 should suffice. I own a 3400 with a Ryzen 1800X. Four sticks at 2800 is typical.

Nickroy1

01-10-2018, 07:46 PM #4

Do you have 2 or 4 RAM modules? A pair of 3200 should suffice. I own a 3400 with a Ryzen 1800X. Four sticks at 2800 is typical.

tommie124
Member

199

01-11-2018, 03:13 AM

Here’s a revised version of your text:

Thank you for the assistance. The setup includes two sticks of RAM, both dual-ranked. I paid more for the 3333Mhz model, but according to the AMD PDF, the memory modules are compatible. I was expecting the 3333Mhz option. By setting DOPC in the motherboard BIOS, a profile automatically appears with the correct latency settings, which I hadn’t configured manually. However, it still runs at 2400Mhz even with that profile. Using cpuz confirmed it matches the expected speed. When I select the auto option and input more than 2800Mhz, the system crashes. The lowest stable speed listed is 2400Mhz, which is the first level of OC. The manufacturer claims compatibility up to 4000Mhz. Do you have any suggestions on what I should try? Should I reach out to support for either the memory or the motherboard? Is this normal, or can I only get 2800Mhz? Thank you again.

tommie124

01-11-2018, 03:13 AM #5

WD_Trashster
Senior Member

454

01-13-2018, 06:49 AM

I believe I understood correctly. Following the manual, A2/B2 marked as the grey slots. In DOPC it displays 3333Mhz, while in auto it only operates at 2400Mhz even with a DOPC profile of 3333Mhz. If you adjust manually, it crashes above 28000Mhz. Could there be something missing in the BIOS setup? Any suggestions? Thanks.

WD_Trashster

01-13-2018, 06:49 AM #6

Froyo_
Member

153

01-13-2018, 08:11 AM

2 Sticks! You completed the DOPC profile in Bios? It correctly detected my RAM and latencies, but it never adjusted to 2400Mhz. From what I understand, that's the default setting.

Froyo_

01-13-2018, 08:11 AM #7

2 Sticks! You completed the DOPC profile in Bios? It correctly detected my RAM and latencies, but it never adjusted to 2400Mhz. From what I understand, that's the default setting.

TheBionicSheep
Member

01-14-2018, 07:48 AM

Your 32Gb RAM is included in the QVL memory list for your motherboard.

TheBionicSheep

01-14-2018, 07:48 AM #8

Your 32Gb RAM is included in the QVL memory list for your motherboard.

MMASTER7
Member

227

01-14-2018, 08:20 AM

You don't have to do anything beyond configuring DOCP in the BIOS. You might need to upgrade the motherboard's BIOS, but make sure to follow the steps in sequence and avoid skipping any, or you risk damaging the board.

MMASTER7

01-14-2018, 08:20 AM #9