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The RX Vega 64 Owners Thread

ShortWarning said:
So I'm still having a problem since I've installed my Vega.

I'll get about 15-20mins gaming out of it them my computer just switches off line it's completely died. It then won't turn on at all for about 10 mins, the power button does nothing. After 10 mins it turns on as normal.

I've tried reseating the card and the power connectors. I've tried setting the fan speed manually in case it's overheating (it's not, hitting about 50 degrees).

The psu is a bitfenix whisper m 750w which is supposedly a good one.

I've been running this system with an rx480 for a year with no problems. The only new part is the gfx card. It's just strange that the computer will not turn straight back on afterwards. Nothing is hot inside either.

Any ideas?
Click to expand...

Do you try to overclock the card? Have you run it on Power Save/Balanced/Turbo modes?
Do you have the same issue on all 3 modes?
Have you uninstalled all 3rd party software (like MSI AB) and kept only AMD drivers to do the tweaking?
Can you open the Driver overlay and observe how the card behaves while gaming? (ctrl+shft+O otherwise with 18.8.8 Alt+R opens the big overlay)
 
Panos said:
The voltage indicator under the HBM is not relevant to HBM voltage but to the core.
If someone wants to see the set voltage of the HBM ram, has to open HWInfo
Click to expand...
I've had my vega64 since nov last year, I appreciate you are very new to ownership of your Vega, but please stop walking around the forum like you know everything and other people do not. I asked what his pstate 3 voltage is because I want to see why his power consumption is so high.
Secondly you conveniently haven't responded to my power saving post I wonder why that is, yet you jumped on this ?, and thirdly I know the voltage in the p-state is not for the hbm voltage I did back in sep 2017.


1. link to my post you ignored, https://forums.overclockers.co.uk/t...owners-thread.18789713/page-274#post-32036154

2. my knowledge that the hbm p-state voltage is not for the hbm voltage, (also my knowledge of 1.25v for v56 and 1.35 for v64, Sep 2017 https://forums.overclockers.co.uk/t...-owners-thread.18789713/page-89#post-31130733
Davedree said:
Do you have a link to your testing?
The 64's are overvolted to 1.35v out the box.
If you are referencing the memory voltage in wattman then that isn't linked to the working operating voltage.
Bur if you are modifying the powertables and registries to control the hbm voltage regulator, do you have special drivers or tools ?
Click to expand...

another post here https://forums.overclockers.co.uk/t...ing-information-guide.18793012/#post-31149490
Davedree said:
Very good detailed info on the bugs and general clocking although similar to Polaris it will help people.
Your Hbm voltage is not representative of the voltage the modules run at. If you are referring to voltage control in wattman then that doesn't undervolt the modules from 1.35v.

good work though
Click to expand...
​
 
arc@css said:
Has anyone gone from a 980Ti to a V64? Did they find it to be worthwhile? Just curious as I may well be making my way back to an all AMD system later this year or early next. :)
Click to expand...
I've been using a 1070 that was overclocked pretty close to 1080. Out the box between the 2 the Vega is a bit more powerful but if the 1070 is overclocked you cant actually feel any difference between the 2 cards. In fact I'd probably be hard pushed to guess which card was running unless it was a 3d mark benchmark tbh.
 
Panos said:
Do you try to overclock the card? Have you run it on Power Save/Balanced/Turbo modes?
Do you have the same issue on all 3 modes?
Have you uninstalled all 3rd party software (like MSI AB) and kept only AMD drivers to do the tweaking?
Can you open the Driver overlay and observe how the card behaves while gaming? (ctrl+shft+O otherwise with 18.8.8 Alt+R opens the big overlay)
Click to expand...

I haven't tried overclocking. I've tried it on both power saver and balanced.

I don't have any third party software for tweaking.

Had a look at the overlay.

Gpu is around 50 degrees. Drawing between 80-115w and utilising 50-60%gpu (i'm only playing wow ATM).

It's not doing anything special when it cuts out, doesn't seem to be ramping up fans, drawing more power etc. It just randomly goes dead.
 
ShortWarning said:
Argh, I was worried that might be the case.

Could it also be the psu (even though it was completely fine till I installed the vega)? I'm only thinking that because the pc cuts out dead then won't power on for 10 mins.

It's very strange.
Click to expand...

I worry this is more PSU related. Don't you have access to a 850W(ish) to test it?
From a friend etc?

However that shouldn't be an issue on Power Save mode as it burns less power than the 480.
That is why asked if you have this issues on Power Save & Balanced modes.

If you are experiencing the issue at 176W & 234W settings, then there is an issue

Also open the AMD overlay and look how the card behaves while gaming.
It displays power consumption, speeds, fan speed, temps.
 
I'v noticed if I manually set the same values as the Turbo mode in custom settings my clock speeds are all over the place..
This after I spend a whole day trying to fix the firestrike/timespy physics scores fluctuating massively during each run.
 
Kei said:
Highest clock speed that my card can get stable is around 1712 which is pretty low compared to most. Unlocking 150% power limit requires registry tweaks to the powerplay tables. I used this video for working out how to unlock the higher power limits.

Day to day, I run it as P6 = 1632MHz @ 1050mV and P7 = 1672MHz @ 1075mV. Average power usage is around 240W and peaks at 275W as reported by GPU-Z. HBM runs quite happily at 1100MHz.
Click to expand...

how is your fan speed / temps with that?
 
JediFragger said:
Wouldn't bother personally, more of a side-grade then upgrade (maybe 10% better at best? Esp if Ti is overclocked).
Click to expand...

As little as that...well, in that case, like you say, it wouldn't be worth it (unless nabbed for a ludicrous price).

Lokken86 said:
I've been using a 1070 that was overclocked pretty close to 1080. Out the box between the 2 the Vega is a bit more powerful but if the 1070 is overclocked you cant actually feel any difference between the 2 cards. In fact I'd probably be hard pushed to guess which card was running unless it was a 3d mark benchmark tbh.
Click to expand...

Interesting, ta. :)
 
Panos said:
I worry this is more PSU related. Don't you have access to a 850W(ish) to test it?
From a friend etc?

However that shouldn't be an issue on Power Save mode as it burns less power than the 480.
That is why asked if you have this issues on Power Save & Balanced modes.

If you are experiencing the issue at 176W & 234W settings, then there is an issue

Also open the AMD overlay and look how the card behaves while gaming.
It displays power consumption, speeds, fan speed, temps.
Click to expand...

The overlay is where I got the numbers above.

Got a few last ditch things to try but I think I'm going to have to rma. :(
 
ShortWarning said:
The overlay is where I got the numbers above.

Got a few last ditch things to try but I think I'm going to have to rma. :(
Click to expand...

Unfortunately it's more common than you would think when it comes to this problem with Vega, you only have to see threads and forums etc. The annoyance is it can be so many factors which are the cause of it, ie something as simple as a windows update.
My v64 worked flawlessly from Nov, but then I experienced the exact problem myself back in May. For me it was the psu but even changing the psu didn't fix it straight away.

Return the system to stock if haven't already, + try an undervolt like 1400mhz on p6 and p7 with voltages for 0.975v and stock hbm 945mhz and hbm pstate 3 voltage 0.975v.
Try numerous games and maybe a firestrike or something too.
 
The problems you see with Vega are crazy, esp considering so few gamers (in comparison to the 1070/1080) have them. Really honestly wish it wasn't like this, think Vega has some potential to be great :(
 
The card is at stock. I'm running an overclock on my cpu though. Could try defaulting that for now.

Strangely, I tried turning my pc on this morning (after it cut out last night) and nothing. Reseated the mb power and it powered up. I don't think it's a timed based thing when I try and turn it on. Every time it's happened I've messed about with reseating stuff, I assumed it was based on time but I don't think it's to do with that. Makes it even stranger.
 
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Davedree said:
What is the voltage in the hbm p-state 3 set to? What vddc does your card hold when under full load?
Click to expand...
HBM state 3 voltage is set to 1075mV. VDDC generally shows 1.0500V but the peak is 1.0875V. Clockspeed hovers around 1630-1650MHz.

ShortWarning said:
The card is at stock. I'm running an overclock on my cpu though. Could try defaulting that for now.

Strangely, I tried turning my pc on this morning (after it cut out last night) and nothing. Reseated the mb power and it powered up. I don't think it's a timed based thing when I try and turn it on. Every time it's happened I've messed about with reseating stuff, I assumed it was based on time but I don't think it's to do with that. Makes it even stranger.
Click to expand...
Sounds like it's not stable at whatever clock speeds it's running at. Mine has done similar when I've pushed it hard on benchmark runs. It all blacks out and dies and can be remarkably awkward to get it to boot again, usually requiring me to pull the card out of its slot and reseat it.

Try flipping the bios switch on the side and see if running in the other bios has any effect. (do this when powered off)
 
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Kei said:
HBM state 3 voltage is set to 1075mV. VDDC generally shows 1.0500V but the peak is 1.0875V. Clockspeed hovers around 1630-1650MHz.


Sounds like it's not stable at whatever clock speeds it's running at. Mine has done similar when I've pushed it hard on benchmark runs. It all blacks out and dies and can be remarkably awkward to get it to boot again, usually requiring my to pull the card out of its slot and reseat it.

Try flipping the bios switch on the side and see if running in the other bios has any effect. (do this when powered off)
Click to expand...

I tried flipping the bios, same deal.

I'm gonna try reseating everything later on. If that doesn't work I'll have to rma.
 
Just curious if their are any Vega 64 / Vega 64 LC owners selling their cards in anticipation for the 2080 / 2080 TI or waiting for Navi?

It's been a year since Vega has been out, has it come time to consider upgrading?
 
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