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The RX Vega 56 Owners Thread

Associate
Joined
28 Aug 2017
Posts
28
yeah I've tested with the firestrike stress test and got 99.7% and not had any issues in games. I'm using vega 64 bios and card has an EK full cover block on it. Checking max temps lastnight with gpuz after playing PUBG for about 1 hour Core was 43c and HBM and hotspot both 50c.
HMB at 1100mhz and core boost was between 1615 and 1625mhz

My testing suggests that HBM2 overclocking is critically dependent on the quality of the cooling. I can clock the HBM2 up to 1060MHz under air cooling providing the core clock rates are kept low enough to control the temperatures under load. However, gradually raising the core clock rates either causes instability or wipes out the benefits of raising the HBM2 clock above 960MHz.

I would be interested to know how much performance benefit you see raising HBM2 from say 1000MHz to 1100MHz when using a water block.
 
Associate
Joined
25 Sep 2017
Posts
15
My testing suggests that HBM2 overclocking is critically dependent on the quality of the cooling. I can clock the HBM2 up to 1060MHz under air cooling providing the core clock rates are kept low enough to control the temperatures under load. However, gradually raising the core clock rates either causes instability or wipes out the benefits of raising the HBM2 clock above 960MHz.

I would be interested to know how much performance benefit you see raising HBM2 from say 1000MHz to 1100MHz when using a water block.

For me about 140 graphic points on Timespy.
 
Associate
Joined
29 Sep 2017
Posts
8
Location
London
My testing suggests that HBM2 overclocking is critically dependent on the quality of the cooling. I can clock the HBM2 up to 1060MHz under air cooling providing the core clock rates are kept low enough to control the temperatures under load. However, gradually raising the core clock rates either causes instability or wipes out the benefits of raising the HBM2 clock above 960MHz.

I would be interested to know how much performance benefit you see raising HBM2 from say 1000MHz to 1100MHz when using a water block.

Are you overclocking the HBM2 to those speeds on 56 bios or 64 air bios? I have tried on my stock air cooled 56 with the 56 bios and max stable is 945MHz, any higher even when temps are around 60c I end up with a crash. I have also noticed when benchmarking in Heaven that increasing HBM2 speeds over the stock causes a little throttling too - drops to 700MHz sporadically unless I increase the power limit by at least 10%.
 
Soldato
Joined
23 Jun 2004
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4,657
Location
Blackburn
My testing suggests that HBM2 overclocking is critically dependent on the quality of the cooling. I can clock the HBM2 up to 1060MHz under air cooling providing the core clock rates are kept low enough to control the temperatures under load. However, gradually raising the core clock rates either causes instability or wipes out the benefits of raising the HBM2 clock above 960MHz.

I would be interested to know how much performance benefit you see raising HBM2 from say 1000MHz to 1100MHz when using a water block.

As marcday says above I gained roughly 140 on my Timespy gpu score running HBM at 1100mhz over 1000mhz
 
Associate
Joined
6 Aug 2011
Posts
156
Will be joining the RX 56 Club later today. I expect to collect my Gigabyte RX 56 later and will post pictures thereafter.
Any decent guides for the whole undervolting / overclocing thing that a fellow like myself can understand?
Is it enough to raise the powerlimit to +50% and undervolt or do I have to manually mess with the P-states?
 
Soldato
Joined
30 Mar 2004
Posts
9,733
Location
London
Will be joining the RX 56 Club later today. I expect to collect my Gigabyte RX 56 later and will post pictures thereafter.
Any decent guides for the whole undervolting / overclocing thing that a fellow like myself can understand?
Is it enough to raise the powerlimit to +50% and undervolt or do I have to manually mess with the P-states?
I was using this guide yesterday to try and optimise my Vega 64. The suggested 900/900/900/+50% unfortunately doesn't work for me, but maybe you'll have more luck.
 
Soldato
Joined
26 Sep 2017
Posts
6,185
Location
In the Masonic Temple
Will be joining the RX 56 Club later today. I expect to collect my Gigabyte RX 56 later and will post pictures thereafter.
Any decent guides for the whole undervolting / overclocing thing that a fellow like myself can understand?
Is it enough to raise the powerlimit to +50% and undervolt or do I have to manually mess with the P-states?
I can help you, I've done very little but test my v56 since i got it a month ago.
My first advice would change the profile on wattman to custom, +50% and lower the core p6 and p7 to 1050 or 1100, = instant large gains over the balanced setting.
After that I, or other im sure will advise on pushing it further.
 
Soldato
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Location
In the Masonic Temple
2qwaV


Here is my little beast finally, i want in ;)
 
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Associate
Joined
8 Sep 2017
Posts
92
Location
Australia
Will be joining the RX 56 Club later today. I expect to collect my Gigabyte RX 56 later and will post pictures thereafter.
Any decent guides for the whole undervolting / overclocing thing that a fellow like myself can understand?
Is it enough to raise the powerlimit to +50% and undervolt or do I have to manually mess with the P-states?


best and easiest way is get this tool - OverdriveNTool from here - https://forums.guru3d.com/threads/overdriventool-tool-for-amd-gpus.416116/

Just set Power Target % to 50 and lower the mv of S6 and S7 to say S6 1000mv and S7 1050mv you also must lower the mv for the memory HBM to be the same as the lowest value you set in either S6 or S7. You don't need to play around with frequencies in S6 or S7 states UNLESS you want to start overclocking the card then you will have to start a process that can be a little tedious to determine which voltage is stable with the increased overclocked frequency of primarily your S7 state.

The first mentioned procedure of just lowering your mv for HBM memory first,remember this value must be set as low as you intend to set your lowest S states eg; HBM mv = 900 - S6 = 900mv (stock frequency) - S7 = 950mv (stock frequency), this is the easiest method to undervolt and achieve increased performance because each undervolted state with stock frequencies will be stable....it's only when you start increasing the frequencies that you will incur instability if the voltages are incorrect.

So try HBM 900mv - S6 900mv - S7 950mv = check frequency by running Superposition or Heaven or 3DMark stress test

HBM 950mv - S6 950mv - S7 1000mv = check frequency etc

HBM 1000mv S6 1000mv - S7 1050mv = check frequency etc.

Can also use HBM 950mv - S6 975mv - S7 1025mv = check frequency.

Each voltage change will affect frequency. Hope this is all clear and helps. ;)

OH, and you can SAVE oc profiles with OverdriveNTool as well which is a GREAT bonus.
 
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Man of Honour
OP
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21 May 2012
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Dalek flagship
] View attachment 0Znav2U.jpg

Here is my little beast finally, i want in ;)


Welcome and on TROH.:)


The Roll of Honour.


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Date 04/10/2017, Make Reference Air, Illuminist, Link
Date 01/10/2017, Make Reference Air, WizardOne, Link
Date 21/09/2017, Make Reference Air, SHOGUNXSHINOBI, Link
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Date 29/08/2017, Make Reference Air, megatron, Link

To get on the Roll of Honour all you have to do is post a pic with your user name on it of your Vega 56.

 
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Man of Honour
Joined
30 Oct 2003
Posts
13,228
Location
Essex
It's a little bit short from the 100mh/s rumour before the release.

There are random claims out there of like anything from 50 to 100 mh/s, personally I feel that unless it's documented and repeatable by others it's rubbish.

Somebody will in time work out how to utilise the hbcc and other features of the card and then 50 or more I believe but 100... imo no.

Vega for mining is imo not the ideal card unless you pay nothing for power. Polaris on the other hand does pretty well.
 
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