Help me overclock my memory on A10-7850k on Asus A88x-pro

[SilthDraeth]

Hello, I don't post much in this section. Anyways, I am hoping that there is someone here with this same motherboard and processor, that can help me with getting my memory to run at 2400.

I loaded the preset settings in the bios and all seemed well. But I hadn't ran memtest, or prime at the speed. Then I suffered from two bsod in a row.

So I went back to default speed of 1600 and ran prime95 for 40 minutes (yes I know that stresses the cpu more than the memory) and I also ran memtest86+ for an hour and no errors.

Anyways, back to the point. If someone has this same setup, I would like some assistance. I need visual aids, all the googling I have done, has actually led me to a few youtube videos that are not real clear as they are in another language, and or just people mentioning things to do that I do not understand. I have read I need to adjust my cpu voltage higher to get the ram stable. But I feel lost. I haven't overclocked anything in over 10 years.

Thanks. I will provide more info as requested/needed.

 

[DrMrLordX]

Wow, no takers? I don't own a Kaveri, but the problem you're describing seems fairly common.

First, I'm going to refer you to one of the biggest and messiest repositories of A10 Kaveri knowledge out there. If you can slog through all 53 pages of that thread, you'll find that many others have had problems getting DDR3-2400 running with the presets. You're going to have to tune your memory by hand to get it running, most likely (and don't be too quick to blame the board; it's more likely the combination of your memory and the APU's IMC).

Do you know anything about tuning the basic memory timings? They haven't changed much in the last ten years, so who knows, you might know this stuff.

 

[SilthDraeth]

Thanks Dr. I have slogged through that muck. Maybe I will be better off creating an account over there, and posting in it. I think part of my problem is the Asus AI suite. I am going to disable that, except it does manage my fan speeds well. I might find a lighter weight program. For that.

 

[monstercameron]

I only have a lowly asus a78m and to get these running I practically flipped a switch in the efi. works and is super stable without tweaking.

what ram are you using?

 

[Soulkeeper]

what exact memory are you running ?

 

[SilthDraeth]

http://www.newegg.com/Product/Produc...82E16820211775
ADATA XPG V2 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 2400 (PC3 19200) Desktop Memory Model AX3U2400W8G11-DMV

 

[AtenRa]

Officially Kaveri supports up to 2133MHz memory. In order to use 2400MHz you will need to raise the NB voltage and perhaps manually adjust the memory settings.

 

[Soulkeeper]

Raising any voltage wouldn't be the first thing i'd suggest.

The first thing i'd suggest is setting all the timings at the memory's default.
Set the voltages and cpu/nb/gpu at their defaults. Then raise the memory divider to 2133

From there verify complete stability with memtest and other benchmarks/loads.
If i'm not mistaken 2133 is the highest divider so you'll have to use bclk adjustments to get to 2400 and that's where the fun starts.

 

[AtenRa]

Raising any voltage wouldn't be the first thing i'd suggest.

The first thing i'd suggest is setting all the timings at the memory's default.
Set the voltages and cpu/nb/gpu at their defaults. Then raise the memory divider to 2133

From there verify complete stability with memtest and other benchmarks/loads.
If i'm not mistaken 2133 is the highest divider so you'll have to use bclk adjustments to get to 2400 and that's where the fun starts.

The majority of motherboards will allow to raise the Memory to 2400MHz without touching the buss-speed. You only need to raise the NB voltage for 2400MHz, for 2133MHz you can operate at the default voltages.

 

[DrMrLordX]

Thanks Dr. I have slogged through that muck. Maybe I will be better off creating an account over there, and posting in it. I think part of my problem is the Asus AI suite. I am going to disable that, except it does manage my fan speeds well. I might find a lighter weight program. For that.

Honestly I'd look for information here, there, and possibly elsewhere. You don't have to limit yourself to one forum (time permitting, of course). Fortunately some others have chosen to weigh in, so you may get some good feedback here. In fact, I think that you already have some.

As far as fan speed controls go, I'd recommend SpeedFan. It's pretty slick.

 

[SilthDraeth]

The main problem I am having is finding the NB voltage spot on my motherboard, and to set things manually. They are not straight forward names in the bios. AT least not to me. Which is why I was hoping someone had went down that path with my motherboard and could show me pictures of what things to mess with, or walk me through it over the phone. I am willing to paypal for the help.

 

[DrMrLordX]

I think that most people here would probably help you for free. Before I try to do anything to help, tell me if these UEFI screenshots are representative of your board's UEFI menu. If they are, then we can probably sort it out here.

 

[AtenRa]

The main problem I am having is finding the NB voltage spot on my motherboard, and to set things manually. They are not straight forward names in the bios. AT least not to me. Which is why I was hoping someone had went down that path with my motherboard and could show me pictures of what things to mess with, or walk me through it over the phone. I am willing to paypal for the help.

I will take a look at my ASUS A88XM-Plus bios and let you know tomorrow.

 

[SilthDraeth]

I think that most people here would probably help you for free. Before I try to do anything to help, tell me if these UEFI screenshots are representative of your board's UEFI menu. If they are, then we can probably sort it out here.

Ahh, that would be it. Thanks.

 

[Erenhardt]

I run 7850k on Asrcok FM2X88X Extream 4+ with Kingston HyperX Beast 2x4GB 2400MHz 11-13-13-34.

I set NB voltage to 1.3V (lower than stock?) HT to 2000GHz and memory to 2400 XMP, but had stablility problems. I lowered freqency to 2133 and timings to 11-11-11-28 and works stable offering the same bandwidth (22.5GB/s) as in 2400MHz mode.

Also, kaveri automatically downclocks CPU multiplier to 30X when there is igp to stay under 95W. You can disable that in AMD Overdrive utility. Enable turbo in BIOS and in overdrive -> Clock/votage -> Turbo core control -> disable turbo. After that it will work on the max non-turbo clocks when both CPU and IGP are used. Sadly, it needs to be done every system boot.

Its almost useless for gaming, 3GHz kaveri is more than enough for that igp if the game is using all threads.


Also, do you know that a10-7850k @1.55V draws 290 Watts in igp+cpu stress test .

 

[DrMrLordX]

Ahh, that would be it. Thanks.

Okay, good. I'm assuming AtenRa will be able to help you hands-on in the near future, but let's see if we can sort things out in the meantime.

First off, let's see if you can get your memory running at or near spec without raising any voltages. Reference this screenshot and set your memory speed to DDR3-2400 manually.

Then, go to DRAM Timing Control (the switch 6 buttons below Memory Frequency) which should bring you to a screen like this. Set the following:

CAS# Latency: 11
RAS# to CAS# Delay: 13
RAS# Pre Time: 13
RAS# ACT Time: 35
COMMAND Mode: 2T

If that doesn't work, try 12/14/14/37 or 12/13/13/35 to see if it will work.

 

[SilthDraeth]

Okay, good. I'm assuming AtenRa will be able to help you hands-on in the near future, but let's see if we can sort things out in the meantime.

First off, let's see if you can get your memory running at or near spec without raising any voltages. Reference this screenshot and set your memory speed to DDR3-2400 manually.

Then, go to DRAM Timing Control (the switch 6 buttons below Memory Frequency) which should bring you to a screen like this. Set the following:

CAS# Latency: 11
RAS# to CAS# Delay: 13
RAS# Pre Time: 13
RAS# ACT Time: 35
COMMAND Mode: 2T

If that doesn't work, try 12/14/14/37 or 12/13/13/35 to see if it will work.

Ok. I will check that out shortly. For the time being, I did the following based on some other advice. I haven't raised any voltages, or configured anything else, except the following.

Advanced Menu>CPU Configuration>
AMD PowerNow - Disabled
CPB Mode - Disabled
C6 Mode - Disabled
APM Mode - Disabled

I am running prime95 blend, and going to launch the unigine heaven free basic benchmark tool. Make sure I am 100% stable for at least 20 minutes or so with both going before I go back to messing with RAM.


I must admit, and I am ashamed of myself for it. I tried to change to many things at once. Which makes it impossible to figure out where a fault is. I understand though that some things like the ram require messing with the northbridge. But I shouldn't try to OC the cpu, the ram and the gpu all at same time. Which I did try at first mainly via the Asus 4 way optimization. I think its auto oc wizard is what got me in my first bind.

 

[DrMrLordX]

I set NB voltage to 1.3V (lower than stock?) HT to 2000GHz and memory to 2400 XMP, but had stablility problems. I lowered freqency to 2133 and timings to 11-11-11-28 and works stable offering the same bandwidth (22.5GB/s) as in 2400MHz mode.

You bring up a valid point which I missed earlier. You can boost available bandwidth with tighter timings. The need to hit DDR3-2400 or higher on Kaveri may be overstated.

 

[SilthDraeth]

I set the timings manually, but I then boosted the ram voltage to 1.7v vs the 1.65 that the xmp profile pulled.

Anyways, ran memtest86+ for about an hour with no errors. Playing some world of tanks right now, and no bsod yet. Will run memtest overnight tonight and see if that is stable.

 

[monstercameron]

I set the timings manually, but I then boosted the ram voltage to 1.7v vs the 1.65 that the xmp profile pulled.

Anyways, ran memtest86+ for about an hour with no errors. Playing some world of tanks right now, and no bsod yet. Will run memtest overnight tonight and see if that is stable.

nice, enjoy your apu...

 

[SilthDraeth]

nice, enjoy your apu...

Thank you.

I still don't know where to up the NB voltage, but if the memory and system is stable as is, I guess I don't need to worry about that for a while, though ultimately I want to try and raise the gpu core to 1ghz, supposed to be pretty common number to reach.

 

[monstercameron]

Thank you.

I still don't know where to up the NB voltage, but if the memory and system is stable as is, I guess I don't need to worry about that for a while, though ultimately I want to try and raise the gpu core to 1ghz, supposed to be pretty common number to reach.

i just use amd overdrive to oc the igp, I get stable ~900mhz...no voltage tweaks though.

 

[DrMrLordX]

Congrats on getting your memory stable. I suspect the extra vdimm made it possible for you. Pay careful attention to what Erenhardt said earlier about downclocking during heavy iGPU usage.

 

[SilthDraeth]

1 full day of gaming and converting videos with ram at 2400 and no blue screens. Also, prime95 ran and seemed fine.

Thank you all again for the assistance.

 

[FlanK3r]

In my review OC DRAM over 2400 MHz was not a problem...

article:
http://pctuning.tyden.cz/hardware/p...odrobny-test-cpu-i-gpu-a-pretaktovani?start=1

for translate will be right choice from Czech to English