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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 185

post #1841 of 3397
Visiontek RX 480-8 : 1,407Mhz Core : Holds True : 82C VRM @ 5k @ 2933rpm : 2110Mhz. Stock Voltages 65288 = 1.250v.

post #1842 of 3397
Quote:
Originally Posted by splendid View Post

@kithylin

For sure do not expect huge difference comparing 290X to RX480 in matter of performance.

I don't know how 290X scores nowadays with new drivers but i can reach 16000 graphic points in Firestrike, 6900 graphic points in Firestrike Extreme at 1480/2100. You can treat that as a reference and compare it to your overclocked 290X. There are some golden chips on the market which can reach 1560 MHz with reasonable voltage as well.

I have water cooled RX480 and i can reach 1480 MHz @ 1.3V on core, if i will figure out how to properly cool down VRM i will be able to use it 24/7. Power efficiency of RX480 on 1.3V isn't perfect as the card needs 225+ W to run on such clocks. comparing to 295-350 W on 290X. For sure it is a huge improvement of AMD but it's not a huge difference.

My card on stock voltage is able to achieve 1340 MHz, with +100 mV (1.2V) is able to reach 1420 MHz. As you can see to increase the clocks by 60 MHz up to 1480 MHz i need another +100 mV (1.3V).

If i remember well power consumption on 1420 MHz is around 150-175W.

If i would be in your position i would stay with 290X as it is a great card and in some games it may be even better than RX. If there will be some increase it will be small. Wait for VEGA.

Regarding cooling, throttling and so on. Forget about overclocking on stock reference cooler. You can boost clocks to 1400 but temp throttling will kill the performance. Most ppl who bought RX480 with Ref cooler undervolt the card to stop throttling.

There are three situation when RX is throttling:

1) due to temperature of Core
2) due to insufficient power budget (card with stock bios is limited to 165W - according to my experience card start to downclock at 1400-1420 and 1.2V)
3) due to VRM temperature over 115 C degrees

Water block on the chip is a good idea, temperature on my chip is below 50 C under load. The biggest challenge is to cool down the VRM section, on ref card VRMs are located in front section of PCB which is very short. It's really hard to find a proper heatsink which will fit into this gap without modifications.

Thank you for an honest answer and honest information. I'm just wondering.. why not use a full-cover block like from EK so it actively cools vrm's too? They make them for almost all the 480 cards.

And I'm on a I7-3770K @ 4.8 ghz (custom water loop) at the moment.. so your score may be (and probably is) influenced by a more modern CPU, so that probably has some bearing on it. But with my 290X compared to an RX 480 @ 1480 Mhz I'm looking at this: http://www.3dmark.com/compare/fs/12082910/fs/12000110

Someone else with one on my same CPU, almost the same clock speed. The big difference is I'd get to water cool the 480x .. and it would cut power in half.

I dunno.. I think like you said I'll wait for VEGA though.
post #1843 of 3397
Main difference I see is the card is having a hard time breaking 70fps on test 1 with tesselation... now tesselation off about 75fps... so those difference between mid 60fps to mid 70fps is tesselation im sure... or does the latest drivers give tesselation off performance with tesselation on?
post #1844 of 3397
Quote:
Originally Posted by chris89 View Post

Main difference I see is the card is having a hard time breaking 70fps on test 1 with tesselation... now tesselation off about 75fps... so those difference between mid 60fps to mid 70fps is tesselation im sure... or does the latest drivers give tesselation off performance with tesselation on?

I don't know about that. We can't change firestrike settings for Tess on or tess off or it invalidates it. And no I'm not upgrading my system, there's not enough of a gain with the newer cpu/platforms vs mine to warrant the $500 or so to upgrade.. 3770K @ 4.8 ghz is enough for anything. I'll probably just wait on vega based on all the information provided here.. so thanks for helping me decide that.
post #1845 of 3397
Sure thing man. I just know since I picked up the 480, I think my 290x & 390x will spend a bit of time on the shelf. The 480 is just too perfect for any system with any size psu nearly. Same 290x/ 390x fps.

Plus 480 has 5k vsr which is awesome haha
post #1846 of 3397
I got DXVA working with patched bios and DSEO.

Here's how:

Download dseo here: http://www.techspot.com/downloads/6205-driver-signature-enforcement-overrider.html

Run atikmdag patcher to make driver work with your bios.

Reboot.

First run dseo as admin,
choose test mode, reboot you should see test mode near the clock on taskbar.

Reboot

Open C:\Windows\System32\drivers\atikmdag-patched\ in file explorer.
See atikmdag.sys, copy this file to c:\

Run dseo as admin.
Choose Sign a system file.
put in C:\atikmdag.sys , hit enter. It should say signed.
Right click the file, properties, you will see digital signatures says NGO as name, that means it worked.

Open C:\Windows\System32\drivers\atikmdag-patched\ in file explorer.
Rename the atikmdag.sys to atikmdagORI.sys. (I couldn't copy it and overwrite the old file without first renaming that file)
Copy the c:\atikmdag.sys you signed to this folder. It will ask for administrator approval, no problem say ok.

Reboot and now DXVA works.

Good for my youtube 1080p 60fps videos that were sucking up cpu in chrome!

Now if I could make it that my onboard gpu which runs monitor 2 could do this dxva instead.
Any idea how to force the browser/youtube/flash/html5 to use the secondary GPU???
post #1847 of 3397
I have stumbled upon this bios editor in github. I dont know if its the same with just a different version but with this one it seems you can set fan target temp

https://github.com/Powergate/PolarisBiosEditor

Didnt try ot yet
post #1848 of 3397
Quote:
Originally Posted by chris89 View Post

HAHA yeah 65288 on all AMD cards is the "Variable Voltage Range"... Tonga 65288 was 1225mv, Hawaii/ Grenada 1250mv, Polaris 1250mv. It scales though as we know, but can go as high as that max on 65288. On Tonga/ Hawaii/ Grenada can increase 65288 beyond 1250 without black screen up to just below 1450mv (1449mv).

390X @ 1250mhz core 1758mhz memory vs 1250mhz memory on even PCIe 3.0 max 16GB/s doesn't gain anything because the bus is limiting it's epic 512bit memory bus width.

RX 480 @ 1407mhz core 2110mhz memory all on stock voltage is the same if not better by quite a lot when DeLimited while using such a nano fraction of what the 290x/ 390x uses.

To sum it up 390x @ 1250mhz is 80GPixel/s but with more loss so kinda rounds down truly 70'ish because of bus limitation but it's a screamer at 1250mhz more than 500w.

RX 480 @ 1407mhz is 45GPixel/s but since so little loss and so low power it's more like 90GPixel/s surpassing the 390x in reality by as much as 10 billion pixel's every second. On way less power.

Could you tell me is there any sheet with variables for other cards and states?

For Rx 470, Rx 480?
Especially for states 4and 5 ?
post #1849 of 3397
Quote:
Originally Posted by Galder View Post

I have stumbled upon this bios editor in github. I dont know if its the same with just a different version but with this one it seems you can set fan target temp

https://github.com/Powergate/PolarisBiosEditor

Didnt try ot yet

1.4 is the newest

Here is the link:
https://github.com/caa82437/PolarisBiosEditor also in the OP
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Intel Skylake I5 6600K Asus Z170-A Powercolor RX 480 Red Devil G.Skill Ripjaw V 
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SSD and Various Sata Corsair H110i GT Win 10 1x 29, 2x24 plus TV 
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Intel 6600k
(12 items)
 
  
CPUMotherboardGraphicsRAM
Intel Skylake I5 6600K Asus Z170-A Powercolor RX 480 Red Devil G.Skill Ripjaw V 
Hard DriveCoolingOSMonitor
SSD and Various Sata Corsair H110i GT Win 10 1x 29, 2x24 plus TV 
KeyboardPowerCaseMouse
Corsair K70 Lux EVGA 1050W 80+ Gold Certified Fully-Modular ATX... Thermaltake Tower 900 Logitech G502 Proteus 
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post #1850 of 3397
Quote:
Originally Posted by mtrai View Post

1.4 is the newest

Here is the link:
https://github.com/caa82437/PolarisBiosEditor also in the OP

I know but that one doesnt have the option to set fan target temp in the bios which I was always looking for since if I set it in wattman or any other software I will lose it upon a windows reboot.
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