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post #4401 of 4413 (permalink) Old 10-23-2018, 11:37 AM
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Quote: Originally Posted by megasthenes View Post
I recently purchased my 3rd RX480/580. Always came back to it after having to sell the predecessors - luckily during the mining craze at way higher price than I initially bought them for Ü.

Sapphire Nitro Pulse. It peforms very well but was loud as hell. So I slapped that Accelero Xtreme III on it, which does an impressive job:



That's Unigine Valley running on the second picture. In real world (which mainly is Destiny 2 for me ATM, as well as some AC:Origins/Odyssey and GW:Wildlands - it will be Fallout76 next month) the GPU reaches 65°C max at 690rpm. It's dead silent and very cool. Easily the best polaris GPU I've ever owned.

Ambient temperature is between 20 and 21°C.

I have a Morpheus II on mine. Load barely breaks 65C with two Cougar Vortex fans at 60% PWM (31C room temperatures). VRM temperatures are a concern, since they get hotter compared to the stock cooler, but no throttling so far or any weird issue. Another issue is that the shroud on the stock cooler apparently also acts as a EMI shield. Since installing the Morpheus I now get noises with my onboard sound. Had to dust out my old Xonar.
Really good card regardless. I plan to keep it as my main card for several years.

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RX 480 Nitro+
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Seagate Barracuda
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EVGA G2
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Noctua NH-D15
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Morpheus II
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Phanteks Enthoo Pro
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Last edited by Melcar; 10-23-2018 at 11:43 AM.
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post #4402 of 4413 (permalink) Old 12-29-2018, 06:46 PM
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Just joined. Picked up a used card that was clearly used for mining (seller sold it with the flashed bios still in place unfortunately). Thankfully it has a bios switch and the other bios was unchanged, though for some odd reason the seller flashed the oc mode on the card and not the silent mode.

That said, it's a Powercolor Red Devil Golden Sample 580 8gb.

Would this be considered good as far as oc's go? Done with MSI Afterburner and ran through hours of unigine heaven testing at 4k.

1450 core /2200 mem

Stock for this card is 1425/2000. Volts are at 1.12 and it's completely stable so far after many hours of benching/gaming loops.

Only thing I've touched is the fan curve slightly and the power limit has been set to +50 of course. Temps rarely go over 60*c as my case has pretty good cooling, too.

So far it seems quicker than my 290x that I had at a rock solid 1125/1500 (75mhz faster core over a 390x). Needed to use my reference cooled 290x in a smaller case for a VR build so I figured for a little over $100 a 580 was worth it.

Main selling points have simply been the 8gb of vram (couldn't run ultra textures on the 290x with only 4gb, it killed fps) and the fact that even if I pushed it 100% fan speed it's just as quiet as my 290x at 60%.


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i7 4790k
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Gigabyte GA-Z97X-Gaming 7
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Sapphire Vega 64 1667mhz core / 1050 mem (reference air cooler)
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G.Skill Trident X 16gb DDR3 2400mhz (2x8gb)
Hard Drive
Crucial M4 128gb
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Crucial MX100 256gb
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Crucial M500 480gb
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Crucial MX500 500gb
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Hyundai Sapphire 240gb
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Hyundai Sapphire 120gb
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LG Blu Ray RW
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Noctua NH-U12S
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FX-8350
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Sapphire 290x
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8gb DDR3 1600
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AMD FX Watercooler (came with 9590)
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Win10 pro 64bit
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Xeon E5450
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Xeon E5450
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Dell T7400 stock
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XFX DD 7970Ghz Edition
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32gb DDR2 667mhz Quad Channel (4gb x8)
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post #4403 of 4413 (permalink) Old 12-29-2018, 09:17 PM
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Quote: Originally Posted by SoloCamo View Post
Just joined. Picked up a used card that was clearly used for mining (seller sold it with the flashed bios still in place unfortunately). Thankfully it has a bios switch and the other bios was unchanged, though for some odd reason the seller flashed the oc mode on the card and not the silent mode.

That said, it's a Powercolor Red Devil Golden Sample 580 8gb.

Would this be considered good as far as oc's go? Done with MSI Afterburner and ran through hours of unigine heaven testing at 4k.

1450 core /2200 mem

Stock for this card is 1425/2000. Volts are at 1.12 and it's completely stable so far after many hours of benching/gaming loops.

Only thing I've touched is the fan curve slightly and the power limit has been set to +50 of course. Temps rarely go over 60*c as my case has pretty good cooling, too.

So far it seems quicker than my 290x that I had at a rock solid 1125/1500 (75mhz faster core over a 390x). Needed to use my reference cooled 290x in a smaller case for a VR build so I figured for a little over $100 a 580 was worth it.

Main selling points have simply been the 8gb of vram (couldn't run ultra textures on the 290x with only 4gb, it killed fps) and the fact that even if I pushed it 100% fan speed it's just as quiet as my 290x at 60%.
I think you should use the mining BIOS it uses tighter memory straps and in my experience with mining myself it helps with gaming fps a little bit too.
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post #4404 of 4413 (permalink) Old 01-06-2019, 09:58 AM
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Quote: Originally Posted by Awesomeguy10578 View Post
I think you should use the mining BIOS it uses tighter memory straps and in my experience with mining myself it helps with gaming fps a little bit too.
Thanks, I'll give that a go.

On a side note, OC or not I've been getting plagued with intermittent and temporary black screens during gameplay. Sometimes it doesn't happen for 30 minutes, sometimes it happens repeatedly in a 5 minute window.

Driver reininstall with DDU did nothing. Power limit is already at 50%. Temps never exceed 60*c.

Any ideas? Monitor is set to full panel as well in the radeon settings. Kind of hitting my head against the wall here as my 290x never plagued me with this nonsense even after five years of being oc'ed.


4k box
(22 items)
Oculus Box
(6 items)
CPU
i7 4790k
Motherboard
Gigabyte GA-Z97X-Gaming 7
GPU
Sapphire Vega 64 1667mhz core / 1050 mem (reference air cooler)
RAM
G.Skill Trident X 16gb DDR3 2400mhz (2x8gb)
Hard Drive
Crucial M4 128gb
Hard Drive
Crucial MX100 256gb
Hard Drive
Crucial M500 480gb
Hard Drive
Crucial MX500 500gb
Hard Drive
Hyundai Sapphire 240gb
Hard Drive
Hyundai Sapphire 120gb
Optical Drive
LG Blu Ray RW
Power Supply
NZXT Hale82 850w
Cooling
Noctua NH-U12S
Case
Rosewill Thor V2 (Black)
Operating System
Windows 10 Pro
Monitor
ASUS PB287Q (4k)
Monitor
Dell Ultrasharp 1908FP
Keyboard
Corsair K55 RGB
Mouse
Cooler Master Storm Recon (black)
Mousepad
Steelseries QCK+
Audio
Creative SoundBlaster Z
Audio
Logitech Z-623
CPU
FX-8350
Motherboard
Asus Crosshair V Formula Z
GPU
Sapphire 290x
RAM
8gb DDR3 1600
Cooling
AMD FX Watercooler (came with 9590)
Operating System
Win10 pro 64bit
CPU
Xeon E5450
CPU
Xeon E5450
Motherboard
Dell T7400 stock
GPU
XFX DD 7970Ghz Edition
RAM
32gb DDR2 667mhz Quad Channel (4gb x8)
Hard Drive
Hyundai Sapphire 240gb SSD
Power Supply
Dell T7400 stock 1000w PSU
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post #4405 of 4413 (permalink) Old 02-17-2019, 02:20 AM
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Anyone able to clarify the difference between VID and VDDC for Polaris?

Grabbed myself a RX 580 and confused as to how to measure vcore.

XFX 580 GTS Black Edition

NCP81022 GPU Voltage = 1.294v
VDDC GPU Voltage = 1.288v

I assume it's best to take the reading from the NCP81022 as that's the VRM controller?

I thought AMD 580s were hard locked around 1.20-1.25v, yet my card is pulling almost 1.3v with 50% power limit and a slight bump to GPU clock speed. This normal? Half the info i read on the net suggests a GPU core voltage of 1.25v to be around maximum recommended on air, yet my card is exceeding that without me even touching voltages.

I take it VID 1.2, the NCP is then set with some form of offset that determines actual voltage?


Quote: Originally Posted by SoloCamo View Post
Thanks, I'll give that a go.

On a side note, OC or not I've been getting plagued with intermittent and temporary black screens during gameplay. Sometimes it doesn't happen for 30 minutes, sometimes it happens repeatedly in a 5 minute window.

Driver reininstall with DDU did nothing. Power limit is already at 50%. Temps never exceed 60*c.

Any ideas? Monitor is set to full panel as well in the radeon settings. Kind of hitting my head against the wall here as my 290x never plagued me with this nonsense even after five years of being oc'ed.
My card had some intermittent occurances of the display going blank.

Try a different display port cable or port on the GPU. That was the cause of my issue.

Last edited by matthew87; 02-17-2019 at 03:25 AM.
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post #4406 of 4413 (permalink) Old 02-18-2019, 01:33 PM
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Quote: Originally Posted by matthew87 View Post
Anyone able to clarify the difference between VID and VDDC for Polaris?

Grabbed myself a RX 580 and confused as to how to measure vcore.

XFX 580 GTS Black Edition

NCP81022 GPU Voltage = 1.294v
VDDC GPU Voltage = 1.288v

I assume it's best to take the reading from the NCP81022 as that's the VRM controller?

I thought AMD 580s were hard locked around 1.20-1.25v, yet my card is pulling almost 1.3v with 50% power limit and a slight bump to GPU clock speed. This normal? Half the info i read on the net suggests a GPU core voltage of 1.25v to be around maximum recommended on air, yet my card is exceeding that without me even touching voltages.

I take it VID 1.2, the NCP is then set with some form of offset that determines actual voltage?
VID is the voltage supplied by the phase controller, VDDC is the voltage read at the core. The small loss of voltage can be caused by the Vdroop from capacitors and resistances of the VRM between the controller and the gpu.

Then, there is no standard of hard lock on voltages, that depends entirely on what the AiB decides for each of its models. Would be nice to know the ASIC quality on your gpu. My bet you should see a low % value considering the high base voltage.

And yes, Polaris tends to come with some offset for voltages, usually +50mV, which makes sense for you: 1.25V VID + 50mV - small Vdroop = 1.288V
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post #4407 of 4413 (permalink) Old 02-20-2019, 06:02 AM
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Quote: Originally Posted by matthew87 View Post
Anyone able to clarify the difference between VID and VDDC for Polaris?

Grabbed myself a RX 580 and confused as to how to measure vcore.

XFX 580 GTS Black Edition

NCP81022 GPU Voltage = 1.294v
VDDC GPU Voltage = 1.288v

I assume it's best to take the reading from the NCP81022 as that's the VRM controller?

I thought AMD 580s were hard locked around 1.20-1.25v, yet my card is pulling almost 1.3v with 50% power limit and a slight bump to GPU clock speed. This normal? Half the info i read on the net suggests a GPU core voltage of 1.25v to be around maximum recommended on air, yet my card is exceeding that without me even touching voltages.

I take it VID 1.2, the NCP is then set with some form of offset that determines actual voltage?

My card had some intermittent occurances of the display going blank.

Try a different display port cable or port on the GPU. That was the cause of my issue.
I had the XFX 580 GTS, I don't know if the black edition one. And it had a voltage offset of +100mv. The actual voltage is NCP81022 GPU Voltage and VDDC GPU Voltage, I suppose both are the same voltage, but measured in a diferent way.


You can see in the attached images, the voltages it had, the firestrike score and with hwinfo the actual voltages it was using. You can see that the vddc voltage is higher than the VID, so it was using a voltage offset. And like you can see in the last image, I could pass firestrike with a -150mv offset, but for games was only stable with -120mv.

Quote: Originally Posted by Ansau View Post
And yes, Polaris tends to come with some offset for voltages, usually +50mV, which makes sense for you: 1.25V VID + 50mV - small Vdroop = 1.288V
The problem in this XFX 580 about the voltage offset is that it is not present in the VOI, maybe is present in xfx gpus controlled by the IR3565, but in NCP81022 ones is not, like you can see in the VOI:

1C 00 03 01 01 07 0C 00 0E 00 00 00 00 00 00 00 04 07 0C 00 0E 00 00 00 00 00 00 00

So I don't know how is this voltege offset added. And the usual bios VOI voltage offset mod, is blocked by default, can't be done without changing other bios tables and increasing the bios length. Also it have some missing values in some tables that I have no idea of for what are used for, so I din't had tried to do the mod to see if it was working.
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post #4408 of 4413 (permalink) Old 03-01-2019, 02:38 AM
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Quote: Originally Posted by Ansau View Post
VID is the voltage supplied by the phase controller, VDDC is the voltage read at the core. The small loss of voltage can be caused by the Vdroop from capacitors and resistances of the VRM between the controller and the gpu.

Then, there is no standard of hard lock on voltages, that depends entirely on what the AiB decides for each of its models. Would be nice to know the ASIC quality on your gpu. My bet you should see a low % value considering the high base voltage.

And yes, Polaris tends to come with some offset for voltages, usually +50mV, which makes sense for you: 1.25V VID + 50mV - small Vdroop = 1.288V
Thanks for the response, figured it was some kind of voltage offset.

ASIC quality is '73.3%'

Seems to be a decent card, without any modifications to voltages it's running stable at 1480/2250mhz. I guess the fact it's factory OC'd to 1425mhz is half the reason why its voltage is higher than reference VID.
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post #4409 of 4413 (permalink) Old 03-10-2019, 08:35 PM
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I've just put an RX 580 in my system and I'm rather shocked at how much I seem to be able to undervolt it. Default for this Powercolor Red Dragon model is 1350MHz, but the cooler isn't very good and temperatures head way north of 80 degrees even at stock, with the fans screaming at 2500RPM+ too (even replaced the TIM with Thermal Grizzly to little effect). I've been tinkering with it all day though, and I'm now down to 1000mV set in WattMan (resulting in a 1.013V absolute peak according to HWiNFO) and still at the stock clock of 1350MHz. According to AMD's overlay this has dropped power consumption from ~145W to ~115W, and even more importantly allows the card to run in the low 70s with the fans at a much more soothing 1500RPM or so. I keep thinking it has to crash, but I've thrown every benchmark I have at it and a couple of hours of both Metro Exodus and The Witcher 3 (plus some World of Warcraft) and am yet to see so much as an artifact. Zero GPU memory errors reported in HWiNFO either, though I'm just running that at stock with the level 2 timing setting for now.

Might try actually raising the clocks above stock now and see how far I can push my luck.
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post #4410 of 4413 (permalink) Old 03-11-2019, 12:59 AM
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Quote: Originally Posted by Aretak View Post
I've just put an RX 580 in my system and I'm rather shocked at how much I seem to be able to undervolt it. Default for this Powercolor Red Dragon model is 1350MHz, but the cooler isn't very good and temperatures head way north of 80 degrees even at stock, with the fans screaming at 2500RPM+ too (even replaced the TIM with Thermal Grizzly to little effect). I've been tinkering with it all day though, and I'm now down to 1000mV set in WattMan (resulting in a 1.013V absolute peak according to HWiNFO) and still at the stock clock of 1350MHz. According to AMD's overlay this has dropped power consumption from ~145W to ~115W, and even more importantly allows the card to run in the low 70s with the fans at a much more soothing 1500RPM or so. I keep thinking it has to crash, but I've thrown every benchmark I have at it and a couple of hours of both Metro Exodus and The Witcher 3 (plus some World of Warcraft) and am yet to see so much as an artifact. Zero GPU memory errors reported in HWiNFO either, though I'm just running that at stock with the level 2 timing setting for now.



Might try actually raising the clocks above stock now and see how far I can push my luck.
Polaris cards have insane stock voltages that are detrimental to performance. The cards end up overheating and throtelling. My Nitro+ RX 480 is not able to sustain constant boost clocks after a few minutes of constant load. I undervolted the card to 1100mv and was able to not only maintain clocks stable, but overclock to 1375Mhz (1342Mhz stock).

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Magicbox
(18 items)
CPU
Ryzen 7 1700
Motherboard
GA-AX370-Gaming K7
GPU
RX 480 Nitro+
RAM
Corsair Vengeance
Hard Drive
Samsung EVO 850
Hard Drive
HyperX 3K
Hard Drive
Seagate Barracuda
Power Supply
EVGA G2
Cooling
Noctua NH-D15
Cooling
Morpheus II
Case
Phanteks Enthoo Pro
Operating System
Kubuntu 18.04
Operating System
Windows 10 Pro
Monitor
Dell U2515H
Keyboard
CM Storm QuickFire TK
Mouse
G502
Mousepad
G440
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Xonar DX
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