Rx480 overclocking -voltage control help

[Frankieanime158]

Hey, attempting to OC my Gaming X rx480 but having a bit of trouble. Right now I have it running at 1360mhz and a memory clock of 2100 with a +15 in power limit with after burner. I get instability at 1365 and crashes after a few minutes in Heaven. It's rock steady at 1360 though, over the 1303 MSI clock. I assume I need to increase voltage though, but I'm not sure how to control it. When I try to turn it up, it snaps to a value of 6, so +6, +12, +18 etc. I seems to bounce between 1.125 or 1.131v with everything stock, and I've increased it to +12 and it still gives me those numbers, but at +18 it seemed to bounce around randomly from the usual 1.131 to 1.17, or even 1.18. Not sure I'm understanding this, it's different from overclocking my CPU, where I can just input a voltage I want.

Temps are fine, at 70% fan speed with my current clock I'm steady at 61c for the passed 45 minutes at 100% load, and it's hardly audible.

Any help appreciated, thanks

[NotTayyeb]

8 hours ago, Frankieanime158 said:

Hey, attempting to OC my Gaming X rx480 but having a bit of trouble. Right now I have it running at 1360mhz and a memory clock of 2100 with a +15 in power limit with after burner. I get instability at 1365 and crashes after a few minutes in Heaven. It's rock steady at 1360 though, over the 1303 MSI clock. I assume I need to increase voltage though, but I'm not sure how to control it. When I try to turn it up, it snaps to a value of 6, so +6, +12, +18 etc. I seems to bounce between 1.125 or 1.131v with everything stock, and I've increased it to +12 and it still gives me those numbers, but at +18 it seemed to bounce around randomly from the usual 1.131 to 1.17, or even 1.18. Not sure I'm understanding this, it's different from overclocking my CPU, where I can just input a voltage I want.

Temps are fine, at 70% fan speed with my current clock I'm steady at 61c for the passed 45 minutes at 100% load, and it's hardly audible.

Any help appreciated, thanks

What software are you using to overclock? 

[HotDiggityDaffodil]

Step 1: slide the power target all the way to the end (+50)

Step 2: add 48 mV

Step 3: increase the clock by 10mhz increments.

Step 4: increase fan speed to 80% for the time being

Step 5: stress test. If it does not crash after 30min, repeat step 3. If it crashes, lower the core speed by 10mhz.

Step 6: stress test with lower fan speed.

 

[FiveNine]

1 hour ago, HotDiggityDaffodil said:

Step 1: slide the power target all the way to the end (+50)

Step 2: add 48 mV

Step 3: increase the clock by 10mhz increments.

Step 4: increase fan speed to 80% for the time being

Step 5: stress test. If it does not crash after 30min, repeat step 3. If it crashes, lower the core speed by 10mhz.

Step 6: stress test with lower fan speed.

 

And stay within safe temp range

[ivan134]

Increments of 6mv is normal for Polaris. If it's crashing, you need more voltage.

 

In case you're wondering Polaris is safe up to 1.3v with stock BIOS, so no matter what overclock setting you prefer to settle with, it will be safe to max out the voltage if you do decide to push it far as the settings allow for.