- Oct 10, 2005
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And now I have an RX580 STRIX TOP OC. It was actually pretty easy.
When the RX 580 was released and it boiled down to some voltage/power/clock bumps, I figured it would be possible. Then I saw about the guy who flashed a Sapphire RX580 bios to his RX480.
Knowing that ASUS typically releases a bios flasher to switch between silent/performance bioses for the STRIX cards, I checked the website daily until it was posted. I ripped out the bioses, checked the settings in the polaris bios tweaker, then got to flashing.
The differences observable in the bios were that the power limit was increased from 110->180 watts, the current limit from 107->149 amps, and the fan profiles were different. I sort of made a huge assumption that based on how much ASUS loves reusing designs that the RX580 was going to be identical or similar enough that it would work. Turns out it did.
Now, I had already been overclocking my RX480 to 1410 core clock with stock voltage, so it seemed pretty safe for stability to flash the 1411 MHz bios. So far, I have not experienced any issue or instability with various benchmarking or stability testing.
I have noticed that the voltage is a lot more stable than before. Originally, under load, the voltage reported by GPU-z would fluctuate anywhere from ~1.1 - ~1.135 with the occasional spike to 1.15. Now it is very consistent at 1.16, but fluctuates slightly from 1.15 to 1.1688. It seems to have enabled me to get a few more MHz out of my overclock at default settings.
I am disappointed that GPU TWEAK II can only increase voltage to 1.2 with this bios instead of the 1.3 originally possible with the RX480 bios, since with the increased power limit I figured I could do some more extreme benchmarking.
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Update May 11/2017
After testing the card for the last 3 weeks and doing some research on the RX580 STRIX board design, I have experienced no issues and have a stronger belief that the VRM design is exactly the same as the RX480 strix. Comparing the board layout and the part numbers from teardowns of both indicates there are no differences.
I still stand by my assertion this is a safe modification, provided you don't flash an overclock too high for your sample.
When the RX 580 was released and it boiled down to some voltage/power/clock bumps, I figured it would be possible. Then I saw about the guy who flashed a Sapphire RX580 bios to his RX480.
Knowing that ASUS typically releases a bios flasher to switch between silent/performance bioses for the STRIX cards, I checked the website daily until it was posted. I ripped out the bioses, checked the settings in the polaris bios tweaker, then got to flashing.
The differences observable in the bios were that the power limit was increased from 110->180 watts, the current limit from 107->149 amps, and the fan profiles were different. I sort of made a huge assumption that based on how much ASUS loves reusing designs that the RX580 was going to be identical or similar enough that it would work. Turns out it did.


Now, I had already been overclocking my RX480 to 1410 core clock with stock voltage, so it seemed pretty safe for stability to flash the 1411 MHz bios. So far, I have not experienced any issue or instability with various benchmarking or stability testing.
I have noticed that the voltage is a lot more stable than before. Originally, under load, the voltage reported by GPU-z would fluctuate anywhere from ~1.1 - ~1.135 with the occasional spike to 1.15. Now it is very consistent at 1.16, but fluctuates slightly from 1.15 to 1.1688. It seems to have enabled me to get a few more MHz out of my overclock at default settings.
I am disappointed that GPU TWEAK II can only increase voltage to 1.2 with this bios instead of the 1.3 originally possible with the RX480 bios, since with the increased power limit I figured I could do some more extreme benchmarking.
========================================================================
Update May 11/2017
After testing the card for the last 3 weeks and doing some research on the RX580 STRIX board design, I have experienced no issues and have a stronger belief that the VRM design is exactly the same as the RX480 strix. Comparing the board layout and the part numbers from teardowns of both indicates there are no differences.
I still stand by my assertion this is a safe modification, provided you don't flash an overclock too high for your sample.
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