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A10 7850K GPU OC Help

post #1 of 18
Thread Starter 
Hi !
I have this APU and want to further increase its Clock speed to achieve better performance. I got it from 720MHz to 900MHz without Voltage adjustments.
My Rig:
A10 7850K cooled by Arctic liquid freezer 240
ASRock FM2A88M-HD+ R2.0
8GB G.Skill RipJawsX DDR3-2400

My goal is 1028MHz at least. How can i achieve that.? I have 0 experience about how to play with voltage and which one is the right so i need your help smile.gif

THX

light
post #2 of 18
Quote:
Originally Posted by lightsuperior View Post

Hi !
I have this APU and want to further increase its Clock speed to achieve better performance. I got it from 720MHz to 900MHz without Voltage adjustments.
My Rig:
A10 7850K cooled by Arctic liquid freezer 240
ASRock FM2A88M-HD+ R2.0
8GB G.Skill RipJawsX DDR3-2400

My goal is 1028MHz at least. How can i achieve that.? I have 0 experience about how to play with voltage and which one is the right so i need your help smile.gif

THX

light


You experiment. Set it to 1028. Stress test. If you have problems reboot. Go into the bios and add a little voltage. Stress test some more.
post #3 of 18
Thread Starter 
Hey! Thx for the tips. I did test 1028MHz on a game, and it lagged hard and crashed. While on stress test, it showed nothing unusual.
Whats the Voltage i have to change? I see GFX/NB Voltage at 1,275V .
Thx for help.
post #4 of 18
I think that is the voltage you would change. I would bump it up 0.05 volts and try the test again.
post #5 of 18
Thread Starter 
I got it to 1,3V actually but the game was still lagging, what am i doing wrong?
post #6 of 18

If you've installed the all-in-one motherboard driver you should have an A-tuning icon on the desktop, in which case you can try OCing your system using the OC Tweaker in A-Tuning, although its EZ OC facility is suspect, as this user guide for it remarks.
 

post #7 of 18
Quote:
Originally Posted by lightsuperior View Post

I got it to 1,3V actually but the game was still lagging, what am i doing wrong?

Lagging or frame rate drops are normally due to overheating or power management kicking in. Increasing voltage will make this worse not better. If you were crashing or showing errors I would say increase voltage.

Did you disable APM in the bios? What are you temps while gaming?
    
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CPUMotherboardGraphicsRAM
4770K Asrock Z87 Extreme 4 R9 290x Koolance cooled Samsung HYK0 @ 2400 C10 
Hard DriveOptical DriveCoolingOS
OCZ Vertex 460 LG WH16NS40 Bluray Custom water loop Windows 8.1 
MonitorPowerCaseMouse
Samsung S22B300 Thermaltake TP-750P Antec Three Hundred Razer Deathadder 
Audio
Earphone 
  hide details  
Reply
post #8 of 18
Thread Starter 
As you can see in my first post, im watercooling my CPU, so the CPU temps arent a problem: @idle: 30°C @load: 40-42°C
I didnt try to disable APM or anything else, so im gonna try it out.
Btw tbh, in UEFI, the highest GPU frequency i can choose is 900MHz, maybe the mainboard isnt made for anything higher than that (?). I was using ASRock A tuning software, where I could do 1028MHz and even more theoretically.
Thx for your help! smile.gif
post #9 of 18

Even though your highest GFX divider in UEFI is only 900Mhz you can still raise it from that using APU Frequency, also, if you have a couple of gigs of ram to spare you can raise GPU performance by going into Advanced Screen>North Bridge Configuration>Shared Memory and raise it to 2G.

 

A modest OC in Windows using OCTweaker should solve your problems. You will be trying to produce four realistic operating frequencies, CPU, RAM, GPU and NB, from the following input values:
Pll: otherwise known as CPU Ratio.
Apu: a MHz value commonly known as Bclk, or Processor Frequency or APU Frequency.
Mem: a memory divider, eg. one of 800/1066/1333/1600/1866/2133/2400MHz.
Gfx: a set of graphics clock dividers derived from the processor and listed in BIOS in GFX Engine Frequency.
Nbg: a MHz value of the Northbridge frequency divider.

 

Using the following equations: Cpu=Apu*Pll; Ram=Apu*Mem/100; Gpu=Apu*Gfx/100; NB=Apu*Nbg/100;

 

So by raising Apu Frequency to 105MHz using a 900MHz Gfx divider you would get Gpu Frequency to 105 x 900 / 100 = 945MHz. How much further you can raise Apu Frequency on your system is a matter for experiment, but this may depend on whether you have Sata set to AHCI or IDE mode, leaving you with a compromise to make between faster drives or faster clocks. However, to get near your target 1028MHz you'd need to raise Apu Frequency to 114Mhz (114 x 900 / 100 = 1026) .

 

As a guide to NB voltage, on the Asus A88X-Pro running an A10-7870K raising the GPU dividers through 866/975/1050MHz automatically raises VDDNB through 1.225/1.25/1.3375V.

 

PS. In raising GPU to 1026MHz using a 114Mhz APU Frequency, of course, you will also be raising CPU, RAM and NB. At default values, assuming a 2133MHz memory divider and NB at 1600MHz, this would result in CPU=114*37=4218MHz; RAM=114*2133/100=2432MHz; and NB=114*1600/100=1824MHz - which should all be possible on your system without further voltage adjustments apart from VDDNB.


Edited by Himo5 - 2/10/16 at 6:37am
post #10 of 18
Thread Starter 
Thx for your help and sorry that it took so long to answer. Meanwhile i tried everything out you suggested, but with no success. 1MHz above 900MHz on the GPU and the game lags no matter how high i put the voltages. I dont know if there is much more to try. Fortunately i could get the CPU to 4,7GHz with 1,55V and 52°C only. I did it for testing purposes. My question is: Does it matter how high the voltages are as long as i have a good cooling system or does the high voltage dammage my CPU and not the heat really?
Thanks for your help ^^
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