Overclocking with undervolt

[Deuxez]

I want to overclock my rx 480 a bit, but ive also undervolted it so state 3,4,5,6 and 7 are at max 916mV. And on all the videos ive looked at people change things from what i have after i undervolted it, so for intance some change the power limit while ive mine at max from the undervolt. Can yall guide me a bit? And also, i did try to change the core clock with the undervolt but whenever i started unigine heaven my pc crashed and my settings gets restore to default, is that cuz of the undervolt, the overclock or both? I havent experienced any crashes with my undervolt except like 1 time per week (still lookin for a more stable undervolt). I use wattman, just so ya know.

 

If it helps a bit, here is how it looks rn:

[Jurrunio]

5 minutes ago, DankDeuxez said:

Can yall guide me a bit?

Dropping power limit drops power draw further but clock speed can fluctuate more.

 

5 minutes ago, DankDeuxez said:

And also, i did try to change the core clock with the undervolt but whenever i started unigine heaven my pc crashed and my settings gets restore to default, is that cuz of the undervolt, the overclock or both?

Both. Undervolt and overclock both are based on squeezing out stability headroom in the voltage and frequency pairing.

[Brooksie359]

The higher the clock speed the more voltage is required to be stable so an undervolt might be stable at stock clocks but as soon as you overclock that goes out the window and you need to figure out the specific voltage required to keep that overclock stable. 

[Deuxez]

Just now, Brooksie359 said:

The higher the clock speed the more voltage is required to be stable so an undervolt might be stable at stock clocks but as soon as you overclock that goes out the window and you need to figure out the specific voltage required to keep that overclock stable. 

Thanks! ill either keep it as it is rn, or i will increase the voltage and try to do some light overclock with it. Any recomendations on which state the clock speed should be? like how high could it be at state 7 etc. I will try to get a stable undervolt with the clock speed as a guide.

[Brooksie359]

Just now, DankDeuxez said:

Thanks! ill either keep it as it is rn, or i will increase the voltage and try to do some light overclock with it. Any recomendations on which state the clock speed should be? like how high could it be at state 7 etc. I will try to get a stable undervolt with the clock speed as a guide.

Honestly I dont own a rx 480 so I wouldn't have the slightest clue. Every card is different anyways so it's better to do testing in small steps until you figure out the best configuration for you. 

[Deuxez]

Just now, Brooksie359 said:

Honestly I dont own a rx 480 so I wouldn't have the slightest clue. Every card is different anyways so it's better to do testing in small steps until you figure out the best configuration for you. 

thanks! just 1 more question. Ive seen people doing their overlock like this: 

And im wondering, why? is the better than just having it at a curve? What should i go for? curve or straight up, and flat? This might be a stupid question, but dont blame me. i havent done any overclocking before, only undervolt once.

 

EDIT: the clock speed isnt the same, i meant the shape.

[Brooksie359]

1 hour ago, DankDeuxez said:

thanks! just 1 more question. Ive seen people doing their overlock like this: 

And im wondering, why? is the better than just having it at a curve? What should i go for? curve or straight up, and flat? This might be a stupid question, but dont blame me. i havent done any overclocking before, only undervolt once.

 

EDIT: the clock speed isnt the same, i meant the shape.

I have never overclocked an AMD GPU I haven't seen an overclock curve like that so I wouldn't know.

[Deuxez]

I looked up some overclocking online, and later managed to find one that seems to not crash my pc nor gpu:

As you can see its a bit better than the normal core clock and mV:

 

OK. so now when i try to use furmark to test both stability and performance, it seems like my core clock stays around 1000mhz, (avg 950-990mhz) even tho the highest is 1330

 <------- this is after running a furmark benchmark. The core clock went up to 1014mhz ONCE and straigth down to 990-ish. Why doesnt it go to the max and all? it doesnt thermal throttle as it barely made it up to 80c during the benchmark.

 

EDIT: this also caused me to get Worse score in the benchmark:

While my undervolted 917mv 1190mhz got this: