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RX 480 overclock discussion

78K views 439 replies 98 participants last post by  Nighthog 
#1 ·
I've been playing around with the 480 since I received it this afternoon. Here are my latest results and current settings;

RX 480 Xfx Black ed. - 1328/2050

Power Limit changes
10% - http://www.3dmark.com/fs/9047245 - 67c - 12672 graphics score
20% - http://www.3dmark.com/fs/9048719 - 67c - 13402 graphics score
30% - http://www.3dmark.com/fs/9048588 - 69c - 13204 graphics score (dropped)
40% - http://www.3dmark.com/fs/9048650 - 70c - 13391 graphics score
50% - http://www.3dmark.com/fs/9048859 - 74c - 13732 graphics score

All done with a 25mv undervolt and fan speeds at 2600/3800

Lowest undervolt I've been able to achieve was 35mv while keeping clock speeds at 1328

Highest core clock I've had stable is 1360 but it dropped the score for some reason to around 13500. Temperatures weren't an issue as it never reached over 70c

I also ran 7 other tests at 1350/2100 and averaged a score of 13734.

Current settings - 1.5% frequency bump(1350), 25mv undervolt across the board, 2050 memory speed, fan speed settings of 2600/3900, temperature control set at 80/60 and power limit set at 50%

I'll update this more as I figure out the sweet spot for my setup. I'm hoping to get as close to 14000 as possible, but it may not happen. The temps don't seem like they're an issue and it may very well be a power draw issue.

Anyone else have any ideas on how to get a little more boost from these cards?

Post your results.
 
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#2 ·
Prolly updated drivers will give it a bit more boost. But, as it is, your 480 is already as fast if not faster than a stock 390X for sure in this benchmark. For games? That remains to be seen. Just sucks that at its price came a cheap cooler. They did the same with the Hawaiis.

EDIT: With a better cooler like a red mod with AIO combined with bios mod, this card might indeed reach Fury performance. Our bios modders are standing by.
biggrin.gif
 
#6 ·
Undervolting seems like an interesting thing. Every chip can undervolt at stock speeds by a different amount and the only thing that happens apparently is when it reaches the minimum it becomes unstable. If you stop there and return 1-2 steps to make it stable you get to use less power and the chip works just as good with less heat in return.

Seems a win and i feel just uneducated that i haven't done it till now. Gotta read up on it more and undervolt my FX8350 and maybe even OC it a bit to keep it working at the same temperature that it is working now
biggrin.gif


All in all it's optimizing the chip voltages as opposed to using stock ones
 
#8 ·
Quote:
Originally Posted by slavovid View Post

Undervolting seems like an interesting thing. Every chip can undervolt at stock speeds by a different amount and the only thing that happens apparently is when it reaches the minimum it becomes unstable. If you stop there and return 1-2 steps to make it stable you get to use less power and the chip works just as good with less heat in return.

Seems a win and i feel just uneducated that i haven't done it till now. Gotta read up on it more and undervolt my FX8350 and maybe even OC it a bit to keep it working at the same temperature that it is working now
biggrin.gif


All in all it's optimizing the chip voltages as opposed to using stock ones
I think the problem with the chip is that the core voltage is too high and the there isn't enough voltage allocated to the other parts on die. The easiest way to resolve this is to undervolt and raise the power limit.
 
#9 ·
Quote:
Originally Posted by slavovid View Post

Undervolting seems like an interesting thing. Every chip can undervolt at stock speeds by a different amount and the only thing that happens apparently is when it reaches the minimum it becomes unstable. If you stop there and return 1-2 steps to make it stable you get to use less power and the chip works just as good with less heat in return.

Seems a win and i feel just uneducated that i haven't done it till now. Gotta read up on it more and undervolt my FX8350 and maybe even OC it a bit to keep it working at the same temperature that it is working now
biggrin.gif


All in all it's optimizing the chip voltages as opposed to using stock ones
I agree. I have two at home (one for me and one for the wife)

The wife won the ASIC rating on GPU-z at ~81%, holding stable at 1300 (1050mV)core clock , 2200 (975mV) memory clock
Mine on the other hand is appently like most 480s at ~62%, holding stable at 1300 (1085mV) core clock, 2200 (975mV) memory clock

Been meaning to push the overclock to see what the max I can get is on my next days off
 
#11 ·
I'm at 1100 mv 1350/2200 all stock blower fan cooler... it'll run higher.. I've had it at 1360/2250 but it started bouncing on the thermal limit, and I had to back it off... I might try an undervolt..

Going to adapt an old heatpipe cooler with dual fan setup I have onto the 480. Its off an older card but think it might actually be a bolt on. I might have to trim the front shroud back but its going to be a close fit.. I should have time to mess with it later this week.

http://www.3dmark.com/3dm/13091400

9403 with AMD Radeon RX 480(1x) and AMD FX-8350
Graphics Score 13 956
 
#12 ·
Quote:
Originally Posted by danjal View Post

I'm at 1100 mv 1350/2200 all stock blower fan cooler... it'll run higher.. I've had it at 1360/2250 but it started bouncing on the thermal limit, and I had to back it off... I might try an undervolt..

Going to adapt an old heatpipe cooler with dual fan setup I have onto the 480. Its off an older card but think it might actually be a bolt on. I might have to trim the front shroud back but its going to be a close fit.. I should have time to mess with it later this week.

http://www.3dmark.com/3dm/13091400

9403 with AMD Radeon RX 480(1x) and AMD FX-8350
Graphics Score 13 956
That's interesting piece of info that i just realised i wanted to know.... will the FX 8350 bottleneck the RX 480
biggrin.gif

tnx for the result
 
#15 ·
I ran a test on my overclocked 390 and found some interesting results based on danjal's Firestrike run: http://www.3dmark.com/3dm/13091400.

My Firestrike run: http://www.3dmark.com/3dm/13106187?

RX 480 Delta R9 390

Stream Processors 2304 256 2560

Core Freq. in MHz 1360 200 1160

Firestrike 1.1 score 13956 28 13928

The 390 as 11.1% more Stream Processors, but a 14.7% lower clock speed to get the same approximate score. While the 480 has 10% less SPs and has a 17.2% higher clock rate with a negligible score difference. Of course this is only a synthetic benchmark and may not directly translate over in-game.
 
#16 ·
#18 ·
Quote:
Originally Posted by Dead Meat View Post

I ran a test on my overclocked 390 and found some interesting results based on danjal's Firestrike run:
Quote:
Originally Posted by MalXenos View Post

My normal 24/7 settings : http://i.imgur.com/0blwXYu.png

"Normal" firemark using the beta drivers: http://www.3dmark.com/fs/9257671
I forgot to check for the temp on that, but it pulled roughly 135watts, shouldn't have gone much past 65C.

Then I overclocked it some more to 1350/2250 at 1150mV/1000mv and +20% power for this result: http://www.3dmark.com/fs/9257760.
It sucked down 167watts and capped out at 70C
Quote:
Originally Posted by comagnum View Post

Highest gfx score thus far (1415 @ 1240mv/2200 @ 1000mv)

http://www.3dmark.com/fs/9254211 - 14717 gfx score

My current 24/7 settings:
1380mhz @ 1200mv/2200mhz @ 1000mv
With the older fx8300 and 8350scores against the I7-4790k being posted you can see the amd cpu are really struggling.
 
#19 ·
#21 ·
Quote:
Originally Posted by MalXenos View Post

My normal 24/7 settings : http://i.imgur.com/0blwXYu.png

"Normal" firemark using the beta drivers: http://www.3dmark.com/fs/9257671
I forgot to check for the temp on that, but it pulled roughly 135watts, shouldn't have gone much past 65C.

Then I overclocked it some more to 1350/2250 at 1150mV/1000mv and +20% power for this result: http://www.3dmark.com/fs/9257760.
It sucked down 167watts and capped out at 70C
Quote:
Originally Posted by comagnum View Post

I agree, however I cracked 10k for the first time; http://www.3dmark.com/fs/9258776

Based on this (only complete chart I could find) http://www.tomshardware.com/charts/2015-vga-charts/01-3DMark-FireStrike,3664.html I scored higher than all but 1 980 bench. I'm sure with a better cpu/mobo I could hit 15k gfx score easily.
I see many 970's and 980's with 15k+
 
#22 ·
Not impressed to be honest.

 
#24 ·
Quote:
Originally Posted by comagnum View Post

It wasn't intended to replace the upper 200/300 series. It's a midrange card. This is all utilizing reference models on early drivers. Jesus.
wow you are salty

I stated I wasn't impressed, and considering I got my 290x for $200 I have a right to be
 
#26 ·
Quote:
Originally Posted by Sp3cialUs3r View Post

I sold my 290X (8GB and 4GB in the other PC) for a good Price because the Heat @ OC and Stock is not nice with Hawaii.

Im a lot happyer with the RX480..
I'd consider it if the AIB cards can push 1400+ with no sweat

but I got tired of waiting
 
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