The RX Vega 56 Owners Thread

Overlag · 27 Sep 2017 at 22:24

deleted

FelixB · 27 Sep 2017 at 22:25

Shiari said:
Vulkan and Direct3D12 require the game devs to implement multi-GPU support, I'm not aware of many that actually have made that effort. Ashes of the Singularity is the only one I can readily think of.

According to AMD, a wide variety of DX12 applications already benefit, including Far Cry Primal, Metro Redux, ROTTR, Sniper Elite and Witcher 3. Amateurs testing DX12 synthetics like Time Spy are already reporting impressive gains.

DX11 and OpenGL strongly encourage single threaded graphics code and most games and engines have followed their example in the past. This single threaded approach wastes resources on multi-core CPUs and makes it extremely difficult to exploit multiple GPUs without kludges like SLI and CrossFire. Games and engines are being redesigned to accommodate multi-threaded graphics code so that they can properly exploit console SOCs based on multiple low-end cores. These design changes carry over naturally to desktops.

DX12 and Vulkan are deliberately designed to enable and encourage multi-threaded code. It is both stupid and difficult to write DX12 and Vulkan code that limits itself to a single thread. Once graphics code is designed to run on a multi-threaded multi-core CPU then it naturally lends itself to multiple GPUs. Simplifying somewhat, both APIs prepare bunches of tasks in advance and later fire them off as needed without too much caring when or where they are executed. The Vega hardware was designed to work with these APIs from the get go by transparently sharing tasks over multiple GPUs. VR provided additional motivation.

CrossFire and SLI may be dead, but multiple GPU architectures are alive and kicking.

Vince · 28 Sep 2017 at 02:05

I really shouldn't have flashed my Vega56 with the bios from my mates 64, it's got me back to playing about with the card. I noticed that if I want to keep it at the 1600 clocks you simply can't keep the fan profile low and if you let it crank it's just far to loud.

My card seems to be able to hit 1620 on the core and 1100 on the memory without issue but to keep it there my ears take a pounding even with an undervolt. I don't want to go full water but have an aio on the cpu so had a look and found that alphacool do a aio for Vega. I couldn't resist and bought the eiswolf 240 aio. Should be with me in a few days

Phixsator · 28 Sep 2017 at 07:28

Vince said:
I really shouldn't have flashed my Vega56 with the bios from my mates 64, it's got me back to playing about with the card. I noticed that if I want to keep it at the 1600 clocks you simply can't keep the fan profile low and if you let it crank it's just far to loud.

My card seems to be able to hit 1620 on the core and 1100 on the memory without issue but to keep it there my ears take a pounding even with an undervolt. I don't want to go full water but have an aio on the cpu so had a look and found that alphacool do a aio for Vega. I couldn't resist and bought the eiswolf 240 aio. Should be with me in a few days

Solution seems pretty clear to me. Get a good aftermarket cooler and use it. Doesn't have to be an AIO as a good air cooler would do wonders. Its how i tame the thermals on my 1080ti using a Prolimatech MK-26. Now that specific air cooler might be a little crazy for some as it is huge in all directions

so it wont fit in slimmer cases but there are plenty to choose from for not that much money.

Vince · 28 Sep 2017 at 09:17

Phixsator said:
Solution seems pretty clear to me. Get a good aftermarket cooler and use it. Doesn't have to be an AIO as a good air cooler would do wonders. Its how i tame the thermals on my 1080ti using a Prolimatech MK-26. Now that specific air cooler might be a little crazy for some as it is huge in all directions so it wont fit in slimmer cases but there are plenty to choose from for not that much money.

Solution was perfectly clear at 2am and that solution was the alphacool eiswolf 240 gpx for vega. I hope it works good

guess I will find out in a week or so.

Overlag · 28 Sep 2017 at 13:59

Might be too large.

RGB strip is just used to light the case, and the motherboard accents are always on red for AMD. Coolant will be changed out for red stuff soon, might get a monoblock for the CPU/VRM and i will probably get a larger reservoir tube

Angst · 28 Sep 2017 at 15:34

Overlag said:
Might be too large.

RGB strip is just used to light the case, and the motherboard accents are always on red for AMD. Coolant will be changed out for red stuff soon, might get a monoblock for the CPU/VRM and i will probably get a larger reservoir tube

What temps do you get with just the one rad?

subbytna · 28 Sep 2017 at 16:19

Crikey,

I decided to flash my 56 bios, I must have picked a liquid cooled 64 bios....GPU said it was at 1730 on the core!

Decided not to bother running that and reverted back to normal 56 BIOS, I didn't fancy burning my house down

subbytna · 28 Sep 2017 at 16:23

Is there an undervolting guide floating about that someone can point me to?

Vince · 28 Sep 2017 at 18:17

I found the best way to go, at least with my card was to flash to a 64 air bios, In wattman set P6 core voltage to 1050, p7 to 1150 leaving stock 64 clocks. On the hbm leave the voltage at 1050 and crank up the hbm clock to 1100. power limit +50, fan profile to top out around 3700rpm which is way to loud for some and you generally wont get to these temps unless benchmarking. That sees me with a stable 1620 boost with 1100 hbm and a gfx score in firestrike of more than 23k. I did manage to get the 56 chewing through some 350 watts while testing :O

Vince · 28 Sep 2017 at 18:20

subbytna said:
Crikey,

I decided to flash my 56 bios, I must have picked a liquid cooled 64 bios....GPU said it was at 1730 on the core!

Decided not to bother running that and reverted back to normal 56 BIOS, I didn't fancy burning my house down

I have a stock sapphire 64 bois that I nabbed from a mates card. Boost is 1632 under that. Think Ill put 64 water on mine when it gets its aio next week to see what it can do.

Overlag · 28 Sep 2017 at 18:42

Angst said:
What temps do you get with just the one rad?

rad is warm when both CPU and GPU are at full load, about 65c CPU and 40c GPU. I think a 360x45mm rad might be better than this 280x80mm rad. Not sure.

Overlag · 28 Sep 2017 at 19:27

subbytna said:
Crikey,

I decided to flash my 56 bios, I must have picked a liquid cooled 64 bios....GPU said it was at 1730 on the core!

Decided not to bother running that and reverted back to normal 56 BIOS, I didn't fancy burning my house down

I just tried the same, mad having peaks of 300watts. Not stable though, mine run around 1700-1720, but would crash after 5mins of heaven.

old gamer · 28 Sep 2017 at 19:51

subbytna said:
Crikey,

I decided to flash my 56 bios, I must have picked a liquid cooled 64 bios....GPU said it was at 1730 on the core!

Decided not to bother running that and reverted back to normal 56 BIOS, I didn't fancy burning my house down

i did the same, dont know why but my games just felt as they were running better on the 56 bios, i got a higher score on heaven with the 56 bios overclocked and undervolted

Overlag · 28 Sep 2017 at 19:58

old gamer said:
i did the same, dont know why but my games just felt as they were running better on the 56 bios, i got a higher score on heaven with the 56 bios overclocked and undervolted

i think with AMD's new boost system if there's instability it lowers clocks randomly then increases them again, so if something aint 100% right with the GPU games will feel stuttery? I just tried a 3dmark run with the Vega64 liquid bios and it was only loading the core 50-75%, then hard hung too. On Vega64-air now still doesn't seem right.

Late edit:

Vega64-air with 50% extra power is about 5-10% faster than my top score on my 56 with the 56 bios. Nice improvement, but worth the extra power? Probably not?

henson0115 · 28 Sep 2017 at 20:46

Overlag said:
i think with AMD's new boost system if there's instability it lowers clocks randomly then increases them again, so if something aint 100% right with the GPU games will feel stuttery? I just tried a 3dmark run with the Vega64 liquid bios and it was only loading the core 50-75%, then hard hung too. On Vega64-air now still doesn't seem right.

what are the temps like on air64?

Pretty sure the only gains on air 64 are higher voltages right? Because web can't overclock the memory voltages atm I suppose that's the only real advantage to t he 64 bios.

Vince · 28 Sep 2017 at 20:48

This is about all my card has in it before it turns into a jet engine. Vega 64 air bios, undervolts of 1020 on the hbm and state 7 1150 undervolt. +50% power. Maintains a clock of around 1620-1650 with these settings.

https://www.3dmark.com/3dm/22400387

Will leave this right here to compare against later

Overlag · 28 Sep 2017 at 21:00

henson0115 said:
what are the temps like on air64?

Pretty sure the only gains on air 64 are higher voltages right? Because web can't overclock the memory voltages atm I suppose that's the only real advantage to t he 64 bios.

temps for me are exactly the same due to watercooler. Voltages arent the main improvement, its the higher power limits. With the standard bios you would hit 220-240watt max and it would start underclocking the card. The 64bios seems to be peaking at 300watts. So with the same voltage my card can hold 1663mhz vs about 1580mhz on the 56 bios

henson0115 · 29 Sep 2017 at 08:43

Overlag said:
temps for me are exactly the same due to watercooler. Voltages arent the main improvement, its the higher power limits. With the standard bios you would hit 220-240watt max and it would start underclocking the card. The 64bios seems to be peaking at 300watts. So with the same voltage my card can hold 1663mhz vs about 1580mhz on the 56 bios

ah yea forgot about that to. makes sense. although ive had mine running at 1700 undervolted boost and 1722 in wattman on 56 bios, so perhaps no need yet to flash.

ICDP · 29 Sep 2017 at 10:08

subbytna said:
Is there an undervolting guide floating about that someone can point me to?

I created this thread for those with Vega 64, but the principals are identical.

https://forums.overclockers.co.uk/t...king-undervolting-information-guide.18793012/