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post #4061 of 4075
Quote:
Originally Posted by Mega Man View Post

Why do people think llc is the only way to overclock.

Why do people think only one llc is the way to overclock?
Most just follow the guide. I know I did. Anyway, lots of other options too, like just pumping your vcore until it pops.
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post #4062 of 4075
LLC is important for AM3 overclocking because the droop spec of AM3 is very loose.

That said, cranking LLC to a board's max setting is generally not the best approach. The key is to get the board so that droop and overshoot are both minimized. On some Gigabyte boards that means setting LLC to Medium, nothing higher or lower.
Quote:
Originally Posted by The Stilt 
The load-line specification for both AM3+ and FM2+ is extremely loose (1.3 mOhm & 2.1mOhm) and because of that the voltage droop by the specification is very large. To ensure that the operation parameters remain within a spec, an AM3+ part which draws 100A of current and requires 1.3000V to be fully stable must have at least 1.4300V default voltage (130mV droop @ 100A). Some of the motherboards are built to have lower Rll (< 1.3mOhm / 2.1mOhm) than the specification dictates, or the end-user might adjust it to be lower than the default value.

On AM4 the situation is significantly better, since the load-line spec. is less than half of what it was on AM3+.

For Zen the load-line appears to be (based on the existing VRM designs) significantly tighter than it was with previous AMD designs and much tighter than the Intel VR12 spec (which is already strict) specifies...
post #4063 of 4075
This is another reason for LLC, provided that it doesn't cause too much overshoot:
Quote:
Originally Posted by The Stilt 
A chip with low leakage characteristics not only requires higher voltage to operate, but is also able to withstand higher voltage levels. A high leaking specimen meanwhile requires less voltage to operate, but also can be killed by the same voltage levels a lower leaking specimen has no issues running at 24/7.

Chips with high leakage characteristics draw significantly more current (at lower voltage), which puts significantly more strain on the VRM than the low leakage specimens do (even at higher voltage). High leakage specimens also run significantly hotter. In fact the temperature through the whole system will be somewhat higher due the higher current draw (increased losses).

High leaking specimen = < 1.450V (sustained Vmax)
Low leaking specimen = < 1.525V (sustained Vmax)

Those are not official figures, however they are based on my own experience on >>200 different Piledriver CPUs. On most motherboards you will be VRM limited at or below those figures anyway.
With LLC off, the required voltage may be high enough to kill a very high leakage chip like the 9590 for a specific level of overclock. The question is whether or not any board's LLC can enable one to reach a higher overclock without overshoot becoming dangerous in terms of killing the chip. My assumption is that it's possible but that may not be accurate. At the very least, it seems that the time spent at the high voltages would be reduced with LLC.
post #4064 of 4075
I would like to thank you for your post ! I have a FX8300 on a M5A99FX and I am now at 4.7 GHZ with 1.415V (Yes I think i am lucky with my chip). My cooling is a H55 with a EK-Vardar FF5-120 (PWM 3000 RPM, don't worry it stays at 1500-1800 RPM when gaming) and With small FFT'S in prime 95 I get 68°C socket 62°C package. Prim Blend worked for 10 hours with no fails. I got a fan on the socket behind the mother board and over the VRM's.

I know surpassed 9590 with benchmarks and I7-6700K !!!! Wow. This chip can do so much ! I can't go over 4.7 Ghz since I need a bump on the Voltage and my small H55 can't hold it with that crazy fan can't hold it. I have 4 fans as intakes (2 front, 1 bottom, 1 front top), my h55 is intake in the middle top of the case and 1 exhaust in the back and 1 top back. I played with the fans many times and that is the best i could get for lower temps.
post #4065 of 4075
   
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post #4066 of 4075
Hey all,

Newbie here. I have had the same old rig for a long time and decided to give some overclocking a whirl before I eventually build a new rig. I have base m5a97 and the 8120. I've seen some complaints about this mobo in general and I am just wondering where I should set my expectations on this? I have the hyper 212 cooler on this. I should note that there is no DIGI+ option on this board and LLC is basically on/off. Below is a cap of where I am at doing ratio 20 and cpu voltage set to 1.4. It seems stable after a short 10min test on prime95. Thoughts?

post #4067 of 4075
Quote:
Originally Posted by ExoTraveler View Post

Hey all,

Newbie here. I have had the same old rig for a long time and decided to give some overclocking a whirl before I eventually build a new rig. I have base m5a97 and the 8120. I've seen some complaints about this mobo in general and I am just wondering where I should set my expectations on this? I have the hyper 212 cooler on this. I should note that there is no DIGI+ option on this board and LLC is basically on/off. Below is a cap of where I am at doing ratio 20 and cpu voltage set to 1.4. It seems stable after a short 10min test on prime95. Thoughts?


You won't get much out of that board, and if you do consider yourself lucky. 4.2GHz was the most I could do when I had that board before it died. Did not even push it that hard (I think it was +0.05v offset with no LLC or something). There are not a lot of options in the BIOS to achieve the higher overclocks and the VRMs are pretty crap.
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post #4068 of 4075
Hello everyone. I'm new to this thread. I've been running an FX6300 for over a year 4.5ghz@1.44v and now I got an FX8350.

I hoped I could go higher but I seem to be locked again at 4.5ghz. With the exact same voltage. This feels kinda strange, and it makes me think I'm doing something wrong. Possible?

My motherboard is an Asus Pro/Gaming Aura 970. Is there any way to check the VRM temps? HWMonitor and HWinfo don't seem to give me infos about vrm temps, any suggestions?

I don't think VRMs are a problem here anyway, as they feel warm and not even hot when i touch them under load.

The northbridge is quite hot though. It should be normal I believe, but I think the heatsink is something near 90c when I touch it (again no way to check temps, is this normal?). I added a 4mm fan on it just to be sure. And I lowered the NB voltage a bit. Pumping it up doesn't seem to help me with the OC tbh.


There's a thing I really want to know, I didn't read the whole thread ofc and maybe you already talked about this. I can actually boot in windows with 4.8Ghz, but when I test with Prime95 I always get errors in the last 2 cores and the same exact thing happened with my FX6300.

Is there no way to just pump up 2 or 4 cores? I tried the Turbo core trick but it doesn't actually work for me. The only thing I get with that is that just 2 cores underclock to 4.2ghz and it's not even constant, I would almost always have the CPU at turbo core frequency, and that is not enough to get stability of course. I fiddled around a lot with settings but I can't seem to get a better result with that. What bothers me is that with CnQ the CPU is actually able to have different frequencies per core, so why can't I just control it?

It would be awesome to have an FX8350 with 2 modules @4.2Ghz and 2 modules at something like 5Ghz.

Any help or suggestions will be appreciated a lot!

additional info : the cpu doesn't seem to go past 50c after an hour of prime95, and I'm using fans and water pump at 80%. LLC setting is on High.
Edited by daevy3k - 6/1/17 at 11:26am
post #4069 of 4075
Quote:
Originally Posted by daevy3k View Post

Hello everyone. I'm new to this thread. I've been running an FX6300 for over a year 4.5ghz@1.44v and now I got an FX8350.

I hoped I could go higher but I seem to be locked again at 4.5ghz. With the exact same voltage. This feels kinda strange, and it makes me think I'm doing something wrong. Possible?

My motherboard is an Asus Pro/Gaming Aura 970. Is there any way to check the VRM temps? HWMonitor and HWinfo don't seem to give me infos about vrm temps, any suggestions?

I don't think VRMs are a problem here anyway, as they feel warm and not even hot when i touch them under load.

The northbridge is quite hot though. It should be normal I believe, but I think the heatsink is something near 90c when I touch it (again no way to check temps, is this normal?). I added a 4mm fan on it just to be sure. And I lowered the NB voltage a bit. Pumping it up doesn't seem to help me with the OC tbh.


There's a thing I really want to know, I didn't read the whole thread ofc and maybe you already talked about this. I can actually boot in windows with 4.8Ghz, but when I test with Prime95 I always get errors in the last 2 cores and the same exact thing happened with my FX6300.

Is there no way to just pump up 2 or 4 cores? I tried the Turbo core trick but it doesn't actually work for me. The only thing I get with that is that just 2 cores underclock to 4.2ghz and it's not even constant, I would almost always have the CPU at turbo core frequency, and that is not enough to get stability of course. I fiddled around a lot with settings but I can't seem to get a better result with that. What bothers me is that with CnQ the CPU is actually able to have different frequencies per core, so why can't I just control it?

It would be awesome to have an FX8350 with 2 modules @4.2Ghz and 2 modules at something like 5Ghz.

Any help or suggestions will be appreciated a lot!

additional info : the cpu doesn't seem to go past 50c after an hour of prime95, and I'm using fans and water pump at 80%. LLC setting is on High.

Please give this a read and save those trying to help you a bunch of questions http://www.overclock.net/t/1258253/how-to-put-your-rig-in-your-sig
I can see which mobo, cpu and that you have a pump but not enough info to help much.

If the NB is reaching 90c it could be due to a lack of air flow or if you're running dual GPUs. If this is the case I'd guess the VRMs aren't too far behind (as in getting good and warm).
Infrared thermometer works if you have one available.
90c anywhere can/will create heat soak and affect CPU Socket temps and possibly cause throttling. Add maybe the stock HS fan for the VRMs and whatever you can come up with for the backside of the mobo. My case allows for a 120 x 25mm. Zip ties will usually hold them in place. This will help with VRM and Socket temps the best. Warning: Spoiler! (Click to show)

OCing the 8 or 9xxx series always requires a very good cooling solution, yours is not listed.
Post a few snips showing IBT AVX and HWInfo64 like this


This will help out a lot. It wouldn't hurt to post all current bios settings as well. It'll give us a starting point at least.
IBT AVX version for FX is found here http://www.overclock.net/attachments/13202
Start with maybe 10 runs set to Very High.
 
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post #4070 of 4075
4.715 on FX-8370
test run with both small FFT and Blend tests.


small FFT

700[/IMG]



CPUz



BIOS SCREENS from Asus 970 Pro Gaming/Aura




Edited by kanabrewski - 6/3/17 at 8:37pm
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