FX 8350 lowered voltage

[Slacker]

• Hello there, I just recently built a new system from ground up (except vid card & PSU). I got me a 8350 because of budget, its been a week since my build, and I like it. My system feels more responsive and games (bf4 & Watch dogs) feels a lot more smoother. One thing I noticed though was the proc runs hot @ stock voltage than what I'm used to on my 5-core overclocked 960t. I read this review of the 8370e on Tom's and how they reached 4ghz on a 1.215v dropping to 1.17v. So I started tinkering with mine to lower heat output and power usage. Now here is where it gets tricky. My stock voltage is 1.2875. Idk if it is called vdroop or what but I got mine as low as 1.2375v that drops to 1.208v on stock clocks and it is prime, IBT, cinebench, Aida stability test, Aod, 3d vantage CPU and physics test, bf4 and WD 100% stable (IBT ran at maximum setting and vantage at three loops). Temps dropped by at least 5c from 59~60 to 51~55 on a warm 32c room temp. But I wanted to go further and I dropped it to 1.215v but it is only stable on CPU and physics three loops on vantage, bf4, and WD. For some reason, when the real stress tests are started, the voltage would drop to 1.18 and the system would freeze up. I only have CnQ enabled, my board doesn't have LLC and I set the voltages on AOD. There is no difference changing the voltage on the bios. Even 3d vantage CPU tests puts all 8 at 100% but the volts don't drop any lower to what I set it to. I am asking the community if you guys have any tips, solutions, or just opinion on why it drops the volts once I run stress tests that make all cores go 100%.

 

[buildzoid]

• Hello there, I just recently built a new system from ground up (except vid card & PSU). I got me a 8350 because of budget, its been a week since my build, and I like it. My system feels more responsive and games (bf4 & Watch dogs) feels a lot more smoother. One thing I noticed though was the proc runs hot @ stock voltage than what I'm used to on my 5-core overclocked 960t. I read this review of the 8370e on Tom's and how they reached 4ghz on a 1.215v dropping to 1.17v. So I started tinkering with mine to lower heat output and power usage. Now here is where it gets tricky. My stock voltage is 1.2875. Idk if it is called vdroop or what but I got mine as low as 1.2375v that drops to 1.208v on stock clocks and it is prime, IBT, cinebench, Aida stability test, Aod, 3d vantage CPU and physics test, bf4 and WD 100% stable (IBT ran at maximum setting and vantage at three loops). Temps dropped by at least 5c from 59~60 to 51~55 on a warm 32c room temp. But I wanted to go further and I dropped it to 1.215v but it is only stable on CPU and physics three loops on vantage, bf4, and WD. For some reason, when the real stress tests are started, the voltage would drop to 1.18 and the system would freeze up. I only have CnQ enabled, my board doesn't have LLC and I set the voltages on AOD. There is no difference changing the voltage on the bios. Even 3d vantage CPU tests puts all 8 at 100% but the volts don't drop any lower to what I set it to. I am asking the community if you guys have any tips, solutions, or just opinion on why it drops the volts once I run stress tests that make all cores go 100%.

Disable ALL power saving features because those cause the dynamic voltage changing mess that is causing the crashes.

 

[Slacker]

Disable ALL power saving features because those cause the dynamic voltage changing mess that is causing the crashes.

I tried turning off CnQ at one point but volts would still drop lower than what I set it and my system would crash. But I will try again when I get home. I only did turn it off on AOD and not on the BIOS.

 

[Mussels]

its just vdroop. just drop it as much as its stable, and stick with that. dont get greedy!

 

[Slacker]

its just vdroop. just drop it as much as its stable, and stick with that. dont get greedy!

You see that's my prob. I could lower it until its stable on games and 3d mark CPU tests, but what about the real benches that tests for stability? How do I reallly knkw stable my processor could be?

 

[Mussels]

You see that's my prob. I could lower it until its stable on games and 3d mark CPU tests, but what about the real benches that tests for stability? How do I reallly knkw stable my processor could be?

you do two tests:

1. CPU and GPU test at the same time. this will max your wattage out - try something like WPrime and furmark at the same time

2. play games on that sucka


once you get your first crash, you raise it one notch at a time until the crashes go away for good. just keep in mind you could have it stable enough to only crash once a week, so keep an eye out for random/rare crashes, and up the voltage slightly if that should happen.

 

[Slacker]

you do two tests:

1. CPU and GPU test at the same time. this will max your wattage out - try something like WPrime and furmark at the same time

2. play games on that sucka


once you get your first crash, you raise it one notch at a time until the crashes go away for good. just keep in mind you could have it stable enough to only crash once a week, so keep an eye out for random/rare crashes, and up the voltage slightly if that should happen.

I'll try wprime so long as it doesn't drop my voltages like the other stress tests that I have used so far. And I will keep an eye out for them random crashes

 

[ne6togadno]

change your cooler and return to default voltage.
your cooler is inadequate for this processor. http://www.xbitlabs.com/articles/coolers/display/thermaltake-isgc300-isgc400_6.html#sect0
212evo will be enough if you dont oc or use small oc

 

[buildzoid]

try some LLC settings to get rid of the high load vdroop.

 

[Slacker]

change your cooler and return to default voltage.
your cooler is inadequate for this processor. http://www.xbitlabs.com/articles/coolers/display/thermaltake-isgc300-isgc400_6.html#sect0
212evo will be enough if you dont oc or use small oc

Sorry but i don't like tower coolers and my cooler is sufficient enough. I just changed the fan to something better and it cools it good. I am just not a fan a processor that runs this warm at stock. I have read that this temp is somewhat normal.

try some LLC settings to get rid of the high load vdroop.

My mobo does not support/have LLC. Its a weird yet, good board.

 

[Slacker]

Well mussels, I got as low as 1.215v stable with furmark and wPrime running altogether. Going 1.2v would make it freeze in bf4 multiplayer. Thanks so much for the tip.

As for your comment ne6togadno, Why make the volt go back to default if you can lower it so much to reduce some power consumption and heat? The stock volts seems overkill for a good performing cpu. I don't see any problems with it at all. As for my cooler, @ stock volts I can match other ppls temps with the same proc with them tower coolers so why bother spending more money on something that works?

Thanks again guys for your comments!