GA-F2A88XN-WIFI (Incompatible memory Kit)

[stefan33]

You need to input DRAM Frequency DDR3-1600, DRAM Timings tCL 9 - tRCD 9 - tRP 9 - tRAS 24, DRAM Voltage 1.50V

That's it.

Ok. May be I can't explain weel...
I have 2 X 8 GB Gskill DDR3 2133@1600 - F3-2133C11D-16GAR
They are working at 1,50V @ 1600 of frequency....
With:

DRAM Frequency DDR3-1600, DRAM Timings tCL 11 - tRCD 11 - tRP 11- tRAS 28, DRAM Voltage 1.50V

And still I miss the dual channel @1600.

THAT'S IT.

So what I have to do for make it working??? Stabilize, rise up voltage of the Dram@ 1,65 and NB Core @ 1,35??? Or what ??? You told me that the ram need to stabilize.... for what ?? They are working @ stock voltage with frequency down @1600 and timings more slov and what they need anymore for working in a simple dual channel???? Thank you. I hope it's possible to solve it....

[GSKILL TECH]

You need to input DRAM Frequency DDR3-1600, DRAM Timings tCL 9 - tRCD 9 - tRP 9 - tRAS 24, DRAM Voltage 1.50V

That's it.

[stefan33]

I don't understand what I have to rise for make working 2 x 8 Gb of 2133 memory @ 1600 in a normal dual channel??? Thanks.

[emissary42]

All the information needed to configure your memory for 1866/2133 is already in the thread.

On another note all my Samsung and Hynix based kits from G.SKILL were running at DDR3-2400+ on Gigabyte FM1 and FM2 mainboards with manual settings no problem. I would even claim that for 2x8GB kits on FM2 and FM2+ Hynix ICs probably are the way to go, when even AMD utilized them on their Radeon R9 memory modules (also rated for DDR3-2133/2400).

[stefan33]

How much time do you need for one answer??? Years???

[stefan33]

Ok, at the end also at 1600 the dual channel has got problems, because 8GB sometimes are not usable.
In the Bios I have 3 option as you can see here:
https://www.bjorn3d.com/2014/05/giga...-kaveri-fm2/2/

or here at the time 2.00:
https://www.youtube.com/watch?v=9g8rQ3SAWgY

1- CPU Vcore
2-NB core that should be CPU-NB Voltage
3-DRam Voltage

What I have to stabilize if I get troubles @1600 mHz with ram sold for 2133???

Plese try to help me because if I don't solve the issue I should think the problem come from your Ram with hynix ram chip....

I think only that I can rise the NB core and Ram voltage.... But I told you before I have already done and I think it doesn't work.... So what voltage I need to set??? Now I'm sure I get issues also @1600... So if i can make your ram working @ 1600 without isssues, than should work also @1866 and 2133... If the ram can't work @2133 anyway for me the ram are incompatible with AMD Kaveri/Godaveri.... and than I will get 3 kits of other brand memory..... Thanks.

[GSKILL TECH]

Input basic RAM info:

DRAM Frequency, timings, Voltage

Post some pictures, we need feedback and information from you in order to help.

[stefan33]

The basics: Download Aida64, go to Motherboard > SPD and write down the XMP timings. Then reboot into the UEFI, adjust the memory ratio, fill in the timings and set a Vdimm of 1.65V.

1) Command Rate: 2T
2) tRFC - for everything between 160/300/350 select the next higher value.
3) Increase the voltage for the memory controller in small steps (usually needs less than +100mV for DDR3-2133).

Vdimm of the memory set @ 1,65? It's not to much higher?
1-Comand rate is 2T
2-Don't understand wich value I need to select? Why not default?
3-Do you mean North Bridge Voltage? So I can put higher than 1,3?
Thanks.
It will be appreciate if the official support also tell me what to do.

[emissary42]

The basics: Download Aida64, go to Motherboard > SPD and write down the XMP timings. Then reboot into the UEFI, adjust the memory ratio, fill in the timings and set a Vdimm of 1.65V.

1) Command Rate: 2T
2) tRFC - for everything between 160/300/350 select the next higher value.
3) Increase the voltage for the memory controller in small steps (usually needs less than +100mV for DDR3-2133).

[stefan33]

So, I work with computer since about 25 yers. I contact you for help. So how can I stabilize 2 X 8 Gb @2133???
My motherboard has got only 2 slot of memory (it's mini ITX) not 4.
Increse Ram Voltage?
Increase NB Voltage?
Set higher memory timings?
How?
Thank you.

Please can you help me? Thanks.

[stefan33]

Yes, chips will change over time. You should only use 1 kit of RAM in each computer. A lot of people have the same problem because they don't know how to set up high performance RAM and they do not contact us for help. It requires advanced OC experience to stabilize full slots of DDR3-2133, but not 1600.

So, I work with computer since about 25 yers. I contact you for help. So how can I stabilize 2 X 8 Gb @2133???
My motherboard has got only 2 slot of memory (it's mini ITX) not 4.
Increse Ram Voltage?
Increase NB Voltage?
Set higher memory timings?
How?
Thank you.

[GSKILL TECH]

Yes, chips will change over time. You should only use 1 kit of RAM in each computer. A lot of people have the same problem because they don't know how to set up high performance RAM and they do not contact us for help. It requires advanced OC experience to stabilize full slots of DDR3-2133, but not 1600.

[stefan33]

No answer???

[stefan33]

Do you have the latest BIOS? We can only assume there is a difference in chips that may cause compatibility issues with the BIOS.

Yes, each kit is tested and guaranteed to run at rated specs. 2133 chips have been tested to be capable of a higher frequency compared to the 1600 chips. That's why usually have to pay more because it is better.

I have the latests bios. You think there is a difference in the chips of the memory? You means from the old kit to the 2 news kits?
But I read a lot over internet of people that with other motherboard brand and other memory type and brand have the same issue too... Anyway, if I set the memory to 1600 i solve the issue like all the other people solve their issues. I don't tink is a issue of a memory... I think it depends from the combination of A88X chipset, AMD Apu and memory over 1600/1866.... and DUAL Channel.
What do you think? Why people try different hardware @2133 and did't solve the issue??? Maybe someone solve it (or think to solve) but in most of the case the issues randomly persist......
Thank you.

[GSKILL TECH]

Do you have the latest BIOS? We can only assume there is a difference in chips that may cause compatibility issues with the BIOS.

Yes, each kit is tested and guaranteed to run at rated specs. 2133 chips have been tested to be capable of a higher frequency compared to the 1600 chips. That's why usually have to pay more because it is better.