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Help - My first BIOS OC!

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December 14, 2010 5:48:00 PM

Hi,

First I did an Easy tune with Turbo V Evo:



Then I read up a little bit and tried my first bios oc:



Any advice on how I can improve it?

I actually just wrote a longer post here while stress testing in Prime95 ( 1.25 hour) and got bluescreen. Does this mean it is unstable or is it because I had to many programs running (AI Suite, AMD Overdrive, GPU-Z, 3xCPU-Z, Speedfan, CoreTemp, Opera) while stress testing?

I would really appreciate some help/tips/guidance. Thanks!

More about : bios

December 14, 2010 7:53:05 PM

I did notice that your easytune settings had core voltage at 1.428 while your BIOS overclock was only at 1.404. You could try increasing your voltage 1 increment at a time and retesting to see if that solves your problem.

Have you disabled all appropriate features in the bios like auto voltage, cool 'n quiet, turbo etc.?
a b K Overclocking
December 15, 2010 1:54:58 AM

I trusted manual OC BIOS better than software OC.
But I noticed that FSB:D RAM is 3:10, that's awful, you must get it to 1:1.
So if I was you, i would Oc it manually from BIOS.
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a b À AMD
a b K Overclocking
December 15, 2010 12:10:35 PM

wa1 said:
I trusted manual OC BIOS better than software OC.
But I noticed that FSB:D RAM is 3:10, that's awful, you must get it to 1:1.
So if I was you, i would Oc it manually from BIOS.


Actually ... it's perfect. He done good. 5.33x250MHz returns him to stock 1333. Good job on the HT link speed. A little tinkering should get you stable.

You might consider raising the NB multiplier for 10x250MHz. Bump the NB volts to 1.2v. This will bump memory bandwidth 15-20% and reduce latency 15-20%.

You should be able to run C&Q -- it's a matter of personal preference, really.

Settings on 'Auto' tend to over-volt, so keep an eye on that. Asus has promised a new round of BIOS updates with improved volt tweaking - follow the trials and tribulations at XS

You are at spec at 1.4v - those new BIOS updates might be a good deal for you and help the cause. Normally I don't range too far outside the volt envelop long-term but with your temps I would consider 1.4225v an option.

45c at load --- it's like you are stealing with 3 cores at 3.9GHz. You should be ashamed :lol: 


Great job [:jaydeejohn:5]


December 15, 2010 12:17:33 PM

Thanx for advices.. I will try some more tweeking when I come home after work today. But how or where in BIOS do I change the FSB/RAM to 1:1? Can I just change it down to 1:1 or do I have to adjust it little by little?

About the voltages, I have Core voltage manual in bios at 1.325V and increased NB Voltage from 1.15V to aprox. 1.17V, but in CPU-Z (pic above) although you can see CoreV is 1.404V. It is auto adjusting. I have M4ATDV-EVO mobo and 1401 BIOS.

An amd's pages it says that max voltage for my cpu is 1.4V so is it safe to push it beond that? Also is it correct that I set my RAM speed to 1333MHz instead of 1600MHz since my multiplier are locked so increase of CPU freq will impact FSB for the RAM aswell.

My goal here is to get a stabile OC for 24/7 without to much noise from the fans. My case has good airflow (120mm intak in front + 120mm intake side door, 200mm exhaust at the top and 120mm exhaust at the back top + 140mm fan on psu)

Btw. I have installed EPU (power management) maybe that is the reason for my auto voltage?

Is my psu "strong" enough to handle a good oc of my processor + gpu (I have hd 6870 @the moment at 950/1110) or do I need a stronger psu?

In advance, thanx!
a b À AMD
a b K Overclocking
December 15, 2010 12:34:31 PM

matta85 said:
Thanx for advices.. I will try some more tweeking when I come home after work today. But how or where in BIOS do I change the FSB/RAM to 1:1? Can I just change it down to 1:1 or do I have to adjust it little by little?

About the voltages, I have Core voltage manual in bios at 1.325V and increased NB Voltage from 1.15V to aprox. 1.17V, but in CPU-Z (pic above) although you can see CoreV is 1.404V. It is auto adjusting. I have M4ATDV-EVO mobo and 1401 BIOS.

An amd's pages it says that max voltage for my cpu is 1.4V so is it safe to push it beond that? Also is it correct that I set my RAM speed to 1333MHz instead of 1600MHz since my multiplier are locked so increase of CPU freq will impact FSB for the RAM aswell.

My goal here is to get a stabile OC for 24/7 without to much noise from the fans. My case has good airflow (120mm intak in front + 120mm intake side door, 200mm exhaust at the top and 120mm exhaust at the back top + 140mm fan on psu)

Btw. I have installed EPU (power management) maybe that is the reason for my auto voltage?

Is my psu "strong" enough to handle a good oc of my processor + gpu (I have hd 6870 @the moment at 950/1110) or do I need a stronger psu?

In advance, thanx!


Completely ignore this **FSB/RAM to 1:1** Fuggitaboudit.

Are you running DDR3 1600 or 1333 ?

What PSU? And your video card OC could be effecting your overall stability, but you've got a great thing going if we get yah tightened up a bit.
December 15, 2010 12:41:27 PM

Wow, thanx for quick reply :) 

This is my setup:

-m4a88td-v evo/usb 3.0
-amd athlon ii x3 445 @ ~3.9GHz, 1.404v w/CM Hyper 212+
-corsair XMS3 ddr3 1600MHz 4gb (2x2gb, dual channel) cl9
-xfx hd 6870 1GB (950/1110)
-650W chieftec super series
-samsung f3 1tb
-antec six hundred II (+ 2x120mm fans xtra)
-benq 24" 1920x1080 2ms
a b À AMD
a b K Overclocking
December 15, 2010 4:31:19 PM

Your memory controller is defaulting to 1333MHz. Here are the Corsair RAMs qualified by Asus for your motherboard:



Are you on this list?

In order to run your memory at spec 1600MHz, the system clock at 240MHz works best. You should drop the memory ratio from 800 to 667 (6.667x 240MHz = 1600MHz). At 15.5x250MHz, the IMC is confused and defaulting to stock 1333. It doesn't want to run your RAMs 6.667x250MHz (16667MHz) so it drops you to 5.33x250MHz.

If you are worried about dropping down to 240MHz and losing something off the top end, screw it, and up the system clock to 280MHz. Test drive 13x280MHz with the memory ratio dropped from 800 to 533. Keep your HT Link speed around 2000MHz and try not to go beyond 2400MHz NB/IMC for the time being.

When you are comfortable at 13x280MHz start working the cpu multiplier. You make it to 14x280MHz (try 13.5x first) and you've almost reached the promised land.

Your power supply should be fine.
December 15, 2010 8:06:34 PM

Hi again!

I got the CMX4GX3M2A1600C9. 2x2GB Kit.

Now I tried 13x280 and i set the Core Voltage manual in bios to 1.375V ad it is there at idle, but when under load (prime95) it ups automatically to 1.404V.

30 min prime95 no errors =) trying 13.5x280 now :D 



It also seems that my BIOS or mobo is adjusting my memory automatically or at least measures it cause i can't find the mem ratio and it only gives me the option to choose a specific speed, so I choosed the memory freq nearest below 1600MHz.

I've disabled C&Q (had it enabled the blue screen mentioned in the first post here) and it seems to run smooth also at 13.5x280 - 10 min so far, gives it 30 min and increase to 14.

If my temps are good it's probably because it's freezing cold outside and winter in Norway at the moment :/  Probably have to do a new check in april/may sometime.

Do you think I can push 14.5x280 with the settings I have at the moment?
December 15, 2010 8:44:06 PM

Only one way to find out? So far your voltages and temps are reasonable. No reason not to try it.
a b À AMD
a b K Overclocking
December 15, 2010 9:06:21 PM

Budddddddy :lol:  Your future is so bright you need shades :sol: 

You have the option of working both the CPU multiplier and system clock. You have headroom to a 300MHz clock (5.33x300MHz = 1600 RAMs). At the 8X multiplier you will be running the IMC/NB at the 2400MHz sweet spot.

13x300MHz would look pretty good at 1.4v. Keep an eye on that new Asus BIOS updates thread. The volt hop is not uncommon and they have been promising to fix it.
December 15, 2010 9:24:24 PM

Hehehe, nice to hear :D 

No problem with 13.5x280 after 35 min prime95. Up'd to 14x and got restart after 3 min prime. I will read up on the voltage thread tomorrow and get back to you.

Should I increase NB/CPU Volts (currently at 1.165V) a little bit aswell with the Core V when trying next time?

(5.33x300MHz = 1600 RAMs) Where can I adust the 5.33? Can u see from the pic if it is set to that now?

Have the HT Link at 1940MHz f I recall correct, next step is 2240 as what the IMC/NB s set to FYI.

Night!
a b À AMD
a b K Overclocking
December 15, 2010 9:36:43 PM

matta85 said:
Hehehe, nice to hear :D 

No problem with 13.5x280 after 35 min prime95. Up'd to 14x and got restart after 3 min prime. I will read up on the voltage thread tomorrow and get back to you.

Should I increase NB/CPU Volts (currently at 1.165V) a little bit aswell with the Core V when trying next time?

(5.33x300MHz = 1600 RAMs) Where can I adust the 5.33? Can u see from the pic if it is set to that now?

Have the HT Link at 1940MHz f I recall correct, next step is 2240 as what the IMC/NB s set to FYI.

Night!




Under 'Memory Timings and Voltage' set the Memory Clock Mode to *Manual* You may then select the Memclock Value.

Bumping the NB volts to 1.2v should not be a problem at all --- normally 2400MHz and below is good at stock volts.
December 16, 2010 12:07:33 PM

Okey, will give it a try when I come home tonight.

Should I try to up the IMC/NB to 2400MHz aswell?

I tried probably 15 times now to unlock the fourth core without any luck, in bios it says AMD Phenom (tm) X4 B45, with Cache L3: 6MB.

I've tried auto unlock, manual unlock, without C&Q, C1 and uping CoreV to 1.4V NB to 1.2V and everytime freezes when posting.

I have read somewhere that it could be one of the cores allready in use that is bad and refusing me from getting into windows. When I chose Manual core unlock 6 cores show up, I've tried disable 5 and 6 nothing helps. Is the L3 cahce linked up to each core individually? Would be nice getting the L3 cache ;)  Any suggestions?

Should I try disable core 0, 2 or 3 and enabling one of the the 4, 5 or 6 instead? Do you have an idea if any of the cominations can work or if it is a blind shot and a waste of time?

Thx.
a b À AMD
a b K Overclocking
December 16, 2010 4:55:20 PM

Can't help you with the core unlocking on that motherboard. It is highly doubtful that your CPU has L3 cache, or 2 additional cores for that matter. It is a C2 Stepping. We would have to have the OPN# from the CPU to stand any chance of finding out. When they initially came out some early AII Propus quad cores were cut-down Deneb PhIIs.

Don't worry about tweaking the IMC/NB until you find your highest clock. What ever you are doing is working, and you can do a little final tweaking later.
December 17, 2010 5:53:09 AM

Okey, I'm starting to wonder if it's actually the L3 Cache that is bad instead of the fourth core cause it won't post if I unlock manually and and only leave 1,2 and 3 core active and lock the 4th core. I give up trying to unlock it, instead i'm gioing to clock the hell outta it :) 

Runned prime95 7 hours over night on 14x280 on Core Voltage 1.428V with no errors :)  Max temp 45C.

Tried 14.5x on 1.440V (1.428V set in bios) and 1.81V NB/CPU but got bluescreen right away. I'm in between if I should try even higher voltages or if it's worth it?

OC is kinda addictive because theres such many possibilities and its exciting to see if you can push it even further :p 
December 17, 2010 5:56:44 AM

Btw!! I have the C3 stepping and "CAC" batch number (instead of the "DAD") which I read has biggest chance of successfull unlocking. Still can't get it to work. Is just my kind of luck I think, probably have to accept that it is bad :-(
a b À AMD
a b K Overclocking
December 17, 2010 10:01:04 AM

Some folks don't like to use 'half' CPU multipliers -- claims it's bad mojo. I've not really had a problem with it either way.

Your temps are great. Have you tried 14x286MHz? Might reach the Promised Land. When you can't squeeze higher clocks without bumping the juice, you have effectively hit the volt wall.

Though running stable at 14x280MHz you won't be missing much of anything. It ain't holding you back :lol: 
December 17, 2010 12:25:24 PM

Heheh ok!

I'll give 286MHz a try when I get the time, hopefully during the weekend but my schedule is pretty full.

Asus has updated to bios revision 1601, will update and give feedback if it helps on the voltage differences between bios and win.

What benefits will I get from increasing the NB/CPU to 2400Mhz or even higher, (think 2800MHz is max) and the HTLink to 2240MHz (or even 2400Mhz)?
Will an increase of these effect any other parts of the system?


Enjoy the weekend :D 
a b À AMD
a b K Overclocking
December 23, 2010 1:05:46 PM

Quote:
What benefits will I get from increasing the NB/CPU to 2400Mhz or even higher, (think 2800MHz is max) and the HTLink to 2240MHz (or even 2400Mhz)?
Will an increase of these effect any other parts of the system?


There is no benefit in running the HT above 2000MHz - at 280MHz drop the HT multiplier to x7 or 1400MHz. The IMC/NB is a different matter.

The general rule of thumb is for each 10% you increase the IMC/NB speed, memory bandwidth is increased 4% and latency is reduced 4% -- the Athlons tend to benefit a bit more than the Phenoms, too. The result:



From Anand

At stock fps 52.6 with an OC'ed bump to 64.2. When the IMC/NB is tweaked this increases frames to 71.4, or gaining an additional 14% over frames at stock clocks.

Gaming and memory-intensive applications tend to gain the greatest benefits. IMC/NB 2500MHz seems to be the sweet spot for me.

'Enthusiasts' are clocking the IMC/NB above 3000MHz. There is a diminishing point of returns, however, and every chip seems a bit different. 2400MHz at stock NB volts is mostly a slam-dunk -- 1.8v to 1.2v takes me where I want to go, others have no problem with higher volts.

Looks good in synthetics, too :lol: 

Download Everest or SisSoft Sandra if you wish to do some benching. I've done an AthlonII 240 Regor:

At 2500MHz, memory bandwidth rose from stock 9.56 to 11.67GB/s. Latency dropped 85.3ns to 75.4ns. The OC'ed 240 Regor numbers are roughly equivalent to a 3GHz PhIIx4 with stock IMC/NB.

You will generally reach a point where additional clock speed will reduce latency BUT bandwidth will start to drop.

And just to follow up on your memory -- 280MHz at 533 should give you 1492MHz. Right?


January 6, 2011 6:12:35 AM

Sweet post man :)  Sorry for so late reply but have been so occupied the last weeks with christmas and new year and new job..

I planning to change the direction of the cpu htsf this weekend to see if I can get even better temps.

Thanks for the advice about SiSoft Sandra. I will try to tweak a little bit further and keep an eye on the memory bandwith. Give you update after more testing this weekend..

I am thinking if I should put my cpu up for sale and buy a phenom x4 955/965BE instead?! But a solid and stable oc at 4GHz makes me wonder if I will benefit any from upgrading when my use is mostly gaming and some video converting.

Another question, probably stupid one hehe,but if I take out my cpu will I need to flash it to get it back to stock speeds or is the OC only in the mobo bios?

Thanx
January 12, 2011 4:28:37 PM

Actually I ran prime over night with 280x14 @ 1.425V (Bios), NB 1.17 and the computer had restarted during night, I took it as a sign that it was unstable. I Also tried 286x14 @ 1.425V but BSOD right after starting prime.

I went into bios and and noticed that C'n'Q was enabled. Maybe a reason for prime fail or the restart.

Anyhow I've now disabled it, bumped NB Freq to 2500MHz (2800Mhz next and highest option) and the HT Link to 1940MHz. Up'd to 1.425V core and 1.182V nb.

I'm actually running prime as I'm writing at 280x14 @ 1.45V max temp 42C after 45mins, seems to be fine but give it 2 hours to check if stable, and take a screenie to put into AMD Overclocking Club tread :D 

Run SiSoft Sandra bench before starting prime, but to be honest don't understand what to see for in the result hehe...

January 13, 2011 11:35:50 AM

Btw. how can I select best answer? Can't seem to find the button anywhere!
a b À AMD
a b K Overclocking
January 13, 2011 2:13:00 PM

In the main Sandra window scroll down to the 'Memory Controller' section --- you may select 'Bandwidth' and 'Latency' tests for comparison.

Running the tests at stock clocks will establish a baseline for you if you wish to analyze 'synthetic' performance gains from your over-clocking.

If you decide to change your processor you should reset the BIOS to system defaults. When you reboot after the change Windows will most likely prompt you for another reboot --- then you will be ready to start cranking again :lol: 

At your current clocks your CPU is not holding back that HD6870 --- so don't worry about that. Just a guess but at similar clocks a PhII may (at best) add another 5%-10% to your framerates (with - I'm also guessing here - a jump in temps and power consumption) in gaming because of the L3 cache.

The principles you have applied in clocking your x3 would also apply to a Phenom quad. You have officially entered the AMD Over-clocking Zone - LOL

Another core would 'unofficially' bump your video transcoding by as much as 30% if your software is capable of using multiple threads.
January 13, 2011 5:06:53 PM

Nice to hear that my cpu ain't bottlenecking my gpu :D 

I ran the tests and these are my results:

Memory Bandwidth: 13,8GB/s
Memory Latency: 79ns
Cache Integrated: 225,7GB/s
Cache L2 on board: 119GB/s
Cache/Memory Bandwidth: 53,25GB/s

Is it any good?
!