Turbo core and overclocking

Hi and welcome to Tom's forum.

For overclocking is recomended disable Turbo Core, but if your still want it active, you will have to change the turbo core settings and find the stable settings.

Ok, thanks for the reply... I was able to get it clocked up to 4.02 GHz, stable, and I did have to disable to the turbo core in order to change my memory freq. But im lost as far as the memory timings/voltages and what they're suppose to be set at with a clock this high because im not too familiar with this new board yet when it comes to overclocking. Im running 8gb Kingston Hyper X 1330 running at 667MHz...seems awefully low ...any suggestions on how to get the most performance out of the memory with the cpu clock as high as it is?

Your RAM is fine, remember that's dual channel. Programs like CPU-Z read the based frequency and not the full frequency of the RAM, so, 667MHz x 2 (dual channel) = 1333MHz

Ahh...ok, but what if I want to overclock the memory also to 1600 instead of 1333, how do I go about doing that? Im new at this AM3/DDR3 stuff..

oK, that's possible but don't use bold text.

You will have to rise the DRAM multiplier and rise the voltage in little steps to find the stable settings, that process is a little long and in some points frustrating but if you really want do it you will find the way.

Do you have the exact model to see the default specs?

Sorry bout the bold text...

The model is an Asus M4A785T-M....socket AM3.

I was able to get the clock up to 4.02Ghz... Vcore set @ 1.500 and runs stable, but when I try to raise the ram clock and voltage...it shuts down on me under a load while at that speed. I just run the ram on Auto.. and it seems to be doing ok, but not sure if its right.

What temps?

process is a little long and in some points frustrating but if you really want do it you will find the way.

Temp running between 38'-45' C

Are those on load?

Yes sir...even while running Prime95 believe it or not. >_<

As long as I dont mess with my ram, it runs fine...Im used to overclocking my old DDR2 system, but when it comes to figuring out the correct ram freqencey timings with ddr3( 400, 533, 667, 800....which mine is currently running at 667Mhz)...im lost. Ive tried to set it at 800Mhz @ 1.70 v or even 1.80v, and im assuming the cpu/ram ratio is off because as soon as I put a load on it...it shut completely down on me.

Excellent temps for that frequency  

Regarding your RAM, the 667MHz = 1333MHz dual channel, for overclock it try 1st changing CL and not voltage.

Yeah...I was surprised myself when I seen the temps....got a pretty good size 90mm aftermarket cpu cooler on it..

So from 667....take it to 800 without changing the voltage?

No, I mean change the CL from stock one (which is 9 i think) to 8 for example and see if that works.

Oh...are u talking about cas timings? which is stock at 9-9-9-24 I think..  

Ohh...are u talking about cas timings? Assuming that is what CL is....lol. Im such a noob at this... Stock is at 9-9-9-24 I believe.

Oops..sorry for double post...1st one didnt show up right away..

Yeah, I'm talking about cas timings. You can overclock the RAM in two way, rising the frequency or lowering the CL

Ok... ill try that... Thanks! I'll get back with you on the results.

pretty sure to change the ram from 1333 to 1600 is asking for stability issues.
8 gigs of 1600 ram is only like 50$ just my 2 cents.

Ok...I tried changing the ram timings to 8-8-8-18...the CL on CPUZ still showed the CL at 9 clocks for some reason. I then up'd the voltage to 1.60v and ran Prime95.. about 5 min into it, shuts down. I then go back and set clocks/voltage back to stock, and just changed the TCL only to 8 clocks, and it still shows 9 clocks. Cant get it down to 8. Am I doing something wrong here?

I figured out what the problem was...the cpu/ram ratio was off and I had to drop the ram freq from 667 to 533 and that allowed the CL timings to drop also. CL timings are now running 7-7-7-20 @1.5v. CPUZ is reporting DRAM Freq is currently running 597.4 Mhz. Running Prime95 now and seems to be stable, but is my ram currently overclocked the way its suppose to be?

i believe this means you have un strapped your memory from your fsb.
and your ram is 1333 which is 667x2... so now i think you down specced your ram
which is providing u with the ability to improve your CL . im not certain whether or not
by downspeccing your ram from 667 to 533 cas 7 would surpass the performance
of running at at 1333. as far as i know you want to be pushing your hardware above its spec.. and my ram is 1333 CL 7 @1.5 volts those are its factory specs 2x4 gigs for 40$. you should be trying to tighten the cl from 9 down to 8 at 1333... if that dont fly...
like i said i dont think its worth the hassle as far as a performance increase to reduce it to 533 cas 7.

Oh I agree... I dont like the idea of having to drop the freq just to get lower CL timings. At 667.. it wont let me tighten the CL without shutting down on me, unless im not throwing enough voltage to em...which im not sure just how much voltage you can push on these modules without frying em out. Ive tried running the freq at 800 and that just made it worse. The ratio was way off.

ya the ram is 1333 cas 9 in your case... so 800 would be 1600 ram.
when tweaking your ram i believe you can only increase it by so many mhz...

for example 1333 might run at 1350-1400mhz somthing like along those lines... with quality ram - increased volts and addition cooling possibly more.

now whenever u do somthing like this you are putting your system stability
into question. testing tweaking all day.... the way of the oldschool oc...

what you want to do is... overclock your cpu by increasing the multiplier
if possible and improve your fsb as well. not certain on how this translates to
the memory exactly but when you do this youll notice your 1333 ram increasing to like 1350 1370 in increments based on the fsb and multiplier values. now what i do is instead of increasing it from 1333 1350 1370 etc...
i drop the memory to the 1066 setting which is 533. and now you increase your fsb and multi until your memory at 1066-533 is as close as possible to
is factory spec 1333. hope u understand what im saying. i am noob with amd
as well but these are methods i have used from intel. and they do translate to
amd as well. by doing the above my amd 960t amd 3.0 is at 4.0ghz on air
@1.33 volts. ram is at no typo ....1332.... lol. at stock ram volts. with thermaltake air cooling.

Thanks Fuzzo for the info...very helpful. I just wont mess with the CL timings and just clock my cpu alittle higher maybe. Does anyone know just how high a AMD 1090T BE will go without burning it out?

if anyone else is also viewing this thread. there used to be a website
where u select your cpu from a list. and it displays all submitted overclocking
specs volts etc... it is extremely helpful in determining how to overclock...
if anyone know the website please share. as i havent used it in a long time.

Ok...im really boggled by this one... I dont know what I did wrong, but my noobness might have something to do with it...lol. I clocked the cpu up to 4.25Ghz with ram set at 533, volts at default, and raised cpu voltage to 1.550v. I ran Prime95 and about a min into the test, 1 core shut down with a fatal error and then it blue screened on me with error "Driver IRQL Not Less or Equal". I just set everything back to default until I can figure out what voltage to run the cpu at with the clock that high, which I do NOT have a temp issue at all running that high.

With the ram set at 533Mhz, the CL timings with the cpu clocked up was at 7-7-7-20 @1.5v, which I did not set... I had all that set on Auto, including the ram voltage. Not sure with the CL timings that low, if I had to up the voltage at all.

Whatever happened with 1 core going down on me and blue screening...something wasnt set right.. anyone got any ideas? Thanks!

BTW--all 6 cores are working now after setting back to default.

dude like i said when you run your ram on non-factory settings your asking for trouble.

i suggest you set your ram properly. first....

try to get that cpu at a nice overclock.

for a 6 core chip thats more power and heat then a 4 core i think....
so with that being said...

A 4 core stable at 4.0ghz is X amount of heat. plus your 10 to maybe 50% heat additional heat being that its 6 cores.... maybe...

i highly suggest at this point before you damage your system.
I think you should just set the cpu volts somewhere between 1.33-1.42
and try to go for maybe 3.7 ghz... i think the 4.00ghz ---plus... should be
a more long term goal for you. you need to work on achieving a few solid overclocks man. before you cook your crap... ALSO A GREAT TIP make
sure your fans are running properly .

Um....I don't know what that AMD CPU's "safe" voltage limit is, but I'm fairly sure 1.550v violates it, or comes close. It does not seem possible that you are getting the low temperatures you are reporting, with the amount of voltage that you say you are pumping through the processor....something is amiss here. Listen to Fuzzo.

also when overclocking if you dont know...
sometimes after you apply settings within the bios your computer may not POST
meaning it wont turn on and allow you into the bios to modify settings.
if this occurs. there is a few ways to reset bios to defaults.
1. being continuously press the insert key... i think...
2. switch or jumper on the motherboard. refer to your manual.
3. remove battery from motherboard give it 5-10 seconds put it back in reboot.
NOW if this occurs be sure to restore your fan settings to full throttle in the bios
until you determine if your temps are ok. its just a helpful safeguard.

im no guru...so i always atleast unplug and turn off my powersupply before
fooling with my components.

I set everything back to default and Im gonna leave it where its at for now. Fuzzo.. I appreciate ur input and I do take it into consideration.. I had my ram running at factory when the crash occured. When you overclock your cpu...at a certain point, the higher you go, you have to drop your ram freq to a fsb/ram ratio that the system will run stable at. That is all that I did. I left the CL timings/voltage alone.. all set on auto.

Also, when you do that, the CL timings will tighten. I had the CL timings all set on Auto and was still showing 7-7-7-20 on CPU-Z.. Im thinking I pushed the clock up on my cpu too high. It was running fine at 4.02Ghz, but 4.25 Ghz maybe was pushing it.

The temps while running at the clock/voltage that I reported is accurate believe it or not. I use Core Temp to monitor my cpu temps, which seems to be pretty accurate. I couldnt believe how cool it was running myself but I have a huge aftermarket cpu cooler on it with plenty of intake/exaust fans to keep it cool.

Like I said before...I am new to this DDR3 stuff and im learning as I go.  

best advice i have for you is. achieve a stable moderate overclock.
the more aggressive your overclock is the more critical your settings become.
as far as stability and damage prevention.

Yeah, I believe I'll just keep it under 4.0Ghz since it was running stable at that point, and ill look into getting better quality ram, 1600 preferably instead of 1333. Thanks again fellas for all of your input on this question.