DDR3-1866/timings/problems

[KeithGS]

Hello everyone,

I've been attempting to do this myself, but however have been having issues.

First thing first.

RAM: http://www.newegg.com/Product/Produc...82E16820231460

CPU: AMD FX-8120 3.1Ghz
RAM: 16GB DDR3
MOBO: MSI 990XA-GD55

So what I've been trying to do is get a stable DDR3-1600 clock, since (I think) dual 4 dimm 1866 is not possible with my board from what I heard (or is it)

I've read the AMD sticky about setting up the frequency's because my RAM would say I only would have 12GB or 7GB or even 2GB available every once in awhile, with the timings that newegg has, I get a stable 16GB 800Mhz (if I set the profile in bios to 1600, I can't boot with it set to 1866, it just doesn't even load bios)

However I've notice my RAM read/write has been really slow with the timings so I read somewhere that my board doesn't support stock 1866, so I'm guessing the timings I set was for 1866? so I changed it to the profile that XMP-1600 from cpu-z and finally I seemed to have a stable stock DDR3-1600..however lately I've been getting a MEMORY_MANAGEMENT BSOD so I'm guessing something is off, maybe a voltage?

So it's as simple as this...

If I could use 1866 on all 4 dim's what voltage, timings, and etc would I use?

If I can't, how can I get a stable 1600 (voltage, timings, and etc)

Thank you very much!

[Tradesman]

The FX CPUs are rated for UP TO 1 STICK per channel at 1866 and that is with a CPU OC, some of the 8120's have problems even w/ 1 stick per channel. Think I'd try at 1600 8-9-8-28 and CR (Command Rate/Timing) at 2T or 2N. Also since it sounds like you are running two sets, which can be problematic in of itself, might want DRAM voltage at 1.6 to start and raise the CPU/NB voltage from whatever AUTO has it set on to add + 0.10

[KeithGS]

The FX CPUs are rated for UP TO 1 STICK per channel at 1866 and that is with a CPU OC, some of the 8120's have problems even w/ 1 stick per channel. Think I'd try at 1600 8-9-8-28 and CR (Command Rate/Timing) at 2T or 2N. Also since it sounds like you are running two sets, which can be problematic in of itself, might want DRAM voltage at 1.6 to start and raise the CPU/NB voltage from whatever AUTO has it set on to add + 0.10

One problem, I've been trying to find the stock CPU/NB voltage, and I can't seem to find it, from what google tells me it's v1.1 any idea?

[Tradesman]

Normally about that, I generally start kicking it up + 0.10 and work from there, some will pop right to 1.3 or even higher to start, but I like to keep voltages as low as possible and stay stable - more voltage = more heat

[KeithGS]

I've been getting 0x000024 BSOD lately, very rarely, I'm guessing it might be because of this, I'll add another +0.10 does that sound like it could be the problem?

[Tradesman]

Might try it and see if it helps that BSOD normally has to do with a hard drive...might try going to Command Prompt and run a CHKDSK /F reboot and let it run through the check disk, might also go to Command Prompt and run a system file check - at command prompt SFC /SCANNOW

[KeithGS]

Tradesman,

I left memtest over night
this is what I got:

[GSKILL TECH]

Memtest one module at a time with EOCP/DOCP, or manual settings.

Do you have the latest BIOS for the motherboard?

Also, make sure the memory is firmly installed, it is strange the capacity changes..

Keep us posted.

Thank you
GSKILL TECH

[KeithGS]

Memtest one module at a time with EOCP/DOCP, or manual settings.

Do you have the latest BIOS for the motherboard?

Also, make sure the memory is firmly installed, it is strange the capacity changes..

Keep us posted.

Thank you
GSKILL TECH

I don't have time to do that, I work in a couple hours I'm just going to have to buy another 16G set, besides I bought 4x 1866, which is a problem of itself (being stupid) so I'll go buy 4x4GB of DDR3 1600 instead

[GSKILL TECH]

It's the same thing.. you just have memory capable of a higher frequency. You can easily set the memory to DDR3-1600, which is the same as a DDR3-1600 kit.

Thank you
GSKILL TECH

[KeithGS]

GSKILL TECH,

I sounded a bit harsh over a half a year ago,

I've done some research, and I wanted to apologize for sounding like that first of all.

When I set the CPU-NB to 2400Mhz,

computer completely freaks out - I set my CPU-NB Voltage to 1.2v and attempted 1.3v but same results, I will take pics of the configuration and post it up in just a sec.

Here is the pic:

[GSKILL TECH]

No worries! It's nothing at all, I get much, much worse all the time!

Based on your picture, definitely some changes need to be made.

CPU-NB Ratio is fine on 10 because you have the FX CPU.

CPU-NB Frequency 2000MHz is more than enough for DDR3-1600.

Same with HT Link Speed, 2000MHz is fine. (Ratio: 10)

CPU-NB Voltage around 1.20V is good.

Let me know how that works.

What RAM are you using? 2 or 4 modules?

Also, do you have the latest BIOS?

Thank you
GSKILL TECH

[KeithGS]

Hello,

Do you mean, if I'm using 4 sticks? or 2? I'm using 4x8GB DDR3 1866 (I know, my mobo/CPU only supports 1 1866, I screwed up lol)

Thanks.

PS: Yes I believe I do have the latest bios, I gotta check it's been over a year)

[GSKILL TECH]

Actually if you boost CPU-NB Voltage, it can support 2 1866.

32GB can work at DDR3-1866, just not at AUTO settings. It needs that voltage boost to be fully stable.

Thank you
GSKILL TECH

[KeithGS]

What should I boost the CPU-NB Voltage too? estimated?