Overclocking 8320 Voltage drooping

[kevin28115]

Hi, so after 2 days of testing I decide to take a wack at the 4.9 ghz barrier again (4.8 stable at 1.4375v) and found something interesting. cpuz was fluctuating between 1.42v and my manual 1.4625v. shortly after that one core on prime95 failed and I stopped the test.

 

does anyone have any idea of what is causing this? I have a sabertooth 990fx r.2 mobo. and followed this guide (

) for setting up the default setting before changing the core ratio/multiplier. (i didn't do his method of changing the frequency to increase clock speed)

 

 

any help is appreciated. Thank you

[Trophywolfe]

it sounds like its throttleing and your cpu might not have got the best of the binning and your stuck with 4.8 as your highest

[airdeano]

Hi, so after 2 days of testing I decide to take a wack at the 4.9 ghz barrier again (4.8 stable at 1.4375v) and found something interesting. cpuz was fluctuating between 1.42v and my manual 1.4625v. shortly after that one core on prime95 failed and I stopped the test.

any help is appreciated. Thank you

 

http://rog.asus.com/216552013/crosshair-motherboards/guide-overclocking-fx-8350-to-4-8ghz-on-crosshair-v-formula-z/

 

try this guide out. less confusing and more to the point. make sure you have

adequate cooling 240 AIO or better. it'll take 1.5v+ to get the 4.9/5.0 from your

4.8 stable. in that guide, they prompt your vDROOP/LLC (LoadLine Calibration)

to raise it to ultra (75%) or extreme (100%).

 

my 8350/CHVFZ 4.9 was similar to your 4.8 voltage, but the VRM was crashing

"HOT". point direct airflow on the VRM 'sinks (will sure to fail without VRM cooling).

[kevin28115]

http://rog.asus.com/216552013/crosshair-motherboards/guide-overclocking-fx-8350-to-4-8ghz-on-crosshair-v-formula-z/

 

try this guide out. less confusing and more to the point. make sure you have

adequate cooling 240 AIO or better. it'll take 1.5v+ to get the 4.9/5.0 from your

4.8 stable. in that guide, they prompt your vDROOP/LLC (LoadLine Calibration)

to raise it to ultra (75%) or extreme (100%).

 

my 8350/CHVFZ 4.9 was similar to your 4.8 voltage, but the VRM was crashing

"HOT". point direct airflow on the VRM 'sinks (will sure to fail without VRM cooling).

 

 

 

well the thing is when it was at 1.475 it was stable for 5 minutes so i restarted and dropped the voltage to 1.4625 and I had the flux. I have H100i atm. I'm nearing the thermal limit but I just want to see what I can get and see if i can break the 5.0 mark.

 

while I'm at it. which would you use for an OC

 

4.8 GHz at 1.4375v  or

4.6 GHz at 1.38125v

[airdeano]

while I'm at it. which would you use for an OC

 

4.8 GHz at 1.4375v  or

4.6 GHz at 1.38125v

 

for a daily driver, the 4.6. there isn't much difference in FPS/productivity between

the two (test it yourself and you'll see). lower temperatures and voltage stable

(as you say), then that'd be the one to use. if you see a stark contrast between

the two otherwise, there is no harm in using the higher voltage, just have to make

sure you have plenty of VRM cooling available as you will need that for sure.

[kevin28115]

Thanks a lot. As for vrm cooling it'll prob have to be passively cooled by the case air.

[airdeano]

Thanks a lot. As for vrm cooling it'll prob have to be passively cooled by the case air.

 

just dump a lot of air on the VRM 'FETS.