Any word on amd vega hash rates?

[pbfarmer]

I stopped using power play tables since 18+ drivers. overdriventool is enough to achieve full hashrate at 165W with vega 64 and modified vega 56.
clock: set to 1600, voltage set to 850mV
mem: set to 1100, voltage set to 860mV
real clock is 1400 to 1500 depending of the card ; real voltage: 885 mV; shown in GPUZ.

4 cards rig is at 700W, system uses roughly 35W

This sounds like you still need PPT.  Assuming a proper setup w/ PPT, actual voltage has historically *always* been lower than set voltage by at least 7-15mv, due to droop.  A higher actual voltage vs what you set is exactly what you would have seen in the past w/o PPT, because your <=P5 voltages were fixed, and higher than your P6/7.  Only thing is, those lower state defaults were usually much higher than 900-ish mv, so something strange is going on.

Also, a drop from 1.6 GHz to 1.4-1.5 indicates you are significantly off on your power vs frequency settings.  Your card is being throttled because it doesn't have enough power, and sooner or later that will lead to instability.  You definitely want to minimize that difference between actual and set frequency, by either increasing power, or reducing frequency.  In the past, I've found that a proper ratio is around 1500 +/- 25 MHz for 900 +/- 15 mv

[1714909184]

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[1714909184]

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[carlo_0000]

I stopped using power play tables since 18+ drivers. overdriventool is enough to achieve full hashrate at 165W with vega 64 and modified vega 56.
clock: set to 1600, voltage set to 850mV
mem: set to 1100, voltage set to 860mV
real clock is 1400 to 1500 depending of the card ; real voltage: 885 mV; shown in GPUZ.

4 cards rig is at 700W, system uses roughly 35W

This sounds like you still need PPT.  Assuming a proper setup w/ PPT, actual voltage has historically *always* been lower than set voltage by at least 7-15mv, due to droop.  A higher actual voltage vs what you set is exactly what you would have seen in the past w/o PPT, because your <=P5 voltages were fixed, and higher than your P6/7.  Only thing is, those lower state defaults were usually much higher than 900-ish mv, so something strange is going on.

Also, a drop from 1.6 GHz to 1.4-1.5 indicates you are significantly off on your power vs frequency settings.  Your card is being throttled because it doesn't have enough power, and sooner or later that will lead to instability.  You definitely want to minimize that difference between actual and set frequency, by either increasing power, or reducing frequency.  In the past, I've found that a proper ratio is around 1500 +/- 25 MHz for 900 +/- 15 mv

i notice something strange
when undervolting, at 900mv  it use 115w in gpu-z for monero   but if i add powerlimit -10 or -15  power goes up to 165w  and the gpu clock drop a bit and hasrate also a bit, it also use more power at the wall

Your card is being throttled because it doesn't have enough power, and sooner or later that will lead to instability

that make no cense, why should it be lead to instability ??

powerlimit is made to limit lol, it s normal gpu clock get up and down, and for doing monero no need full speed but going below 1350 decrease the speed

[pbfarmer]

I stopped using power play tables since 18+ drivers. overdriventool is enough to achieve full hashrate at 165W with vega 64 and modified vega 56.
clock: set to 1600, voltage set to 850mV
mem: set to 1100, voltage set to 860mV
real clock is 1400 to 1500 depending of the card ; real voltage: 885 mV; shown in GPUZ.

4 cards rig is at 700W, system uses roughly 35W

This sounds like you still need PPT.  Assuming a proper setup w/ PPT, actual voltage has historically *always* been lower than set voltage by at least 7-15mv, due to droop.  A higher actual voltage vs what you set is exactly what you would have seen in the past w/o PPT, because your <=P5 voltages were fixed, and higher than your P6/7.  Only thing is, those lower state defaults were usually much higher than 900-ish mv, so something strange is going on.

Also, a drop from 1.6 GHz to 1.4-1.5 indicates you are significantly off on your power vs frequency settings.  Your card is being throttled because it doesn't have enough power, and sooner or later that will lead to instability.  You definitely want to minimize that difference between actual and set frequency, by either increasing power, or reducing frequency.  In the past, I've found that a proper ratio is around 1500 +/- 25 MHz for 900 +/- 15 mv

i notice something strange
when undervolting, at 900mv  it use 115w in gpu-z for monero   but if i add powerlimit -10 or -15  power goes up to 165w  and the gpu clock drop a bit and hasrate also a bit, it also use more power at the wall

Sounds to me like you've pushed your card past some internal (or bios enforced) limit, so it's resetting to some kind of default.

Your card is being throttled because it doesn't have enough power, and sooner or later that will lead to instability

that make no cense, why should it be lead to instability ??

powerlimit is made to limit lol, it s normal gpu clock get up and down, and for doing monero no need full speed but going below 1350 decrease the speed

Because throttling is a reactive behavior, and it is not instantaneous.  There's always a chance that between the threshold exception and the throttling reaction that the hardware gets into a state from which it can't recover.

And not sure how powerlimit came into this discussion - we're talking about voltage settings.

[gotminer]

Anyone having issues with the new version of XMR-STAK?  Having hashrate issues.  Old version I'm getting around 11,500 ... New version I'm getting 7500.

[stuberman]

Anyone having issues with the new version of XMR-STAK?  Having hashrate issues.  Old version I'm getting around 11,500 ... New version I'm getting 7500.

I am running two Vega 56's on Windows and XMR-STAK 2.5.1 (v8) and averaged 4,500 H/s now running 4,100 H/s (with CPU)

• Newer AMD drivers cause problems - I run Adrenaline 18.5.1
• It helped me to increase AMD config 'worksize' to 16 and 'intensity' to a higher number such as 1904
• When updating to XMR-STAK 2.5.x you need to start with fresh config files and tweak them after running miner the first time.

[netmebtc]

My 6xVega64 use stak2.5.1,  algo Heavy,18.5.1driver Only get 7.8K,.   But use stak2.4.7,20170823blockchain driver,can get 8.3k,Why?

the same parameters:  core 1408/900   mem:1080/900 powerlimit -20%

Anyone having issues with the new version of XMR-STAK?  Having hashrate issues.  Old version I'm getting around 11,500 ... New version I'm getting 7500.

I am running two Vega 56's on Windows and XMR-STAK 2.5.1 (v8) and averaged 4,500 H/s now running 4,100 H/s (with CPU)

• Newer AMD drivers cause problems - I run Adrenaline 18.5.1
• It helped me to increase AMD config 'worksize' to 16 and 'intensity' to a higher number such as 1904
• When updating to XMR-STAK 2.5.x you need to start with fresh config files and tweak them after running miner the first time.

[bubaba]

Hey guys

whats your intensity setting with stak2.5.+ in amd.txt for cn_heavy on 64/56?

im only getting ~1300h/s per card with intensity at 896

{ "index" : 0,
    "intensity" : 896, "worksize" : 8,
    "affine_to_cpu" : 0, "strided_index" : 2, "mem_chunk" : 2,
    "unroll" : 8, "comp_mode" : true
  },

Im reading that people do nearly 1500h/s per card 


on v8 i use 1984 intensity

and do you use something else for cn_fast/lite?

Thx in advance for any answers.

[nordmann666]

hello,

since ETH is worth mining again:

how can i manage to switch my Vega Rig between CN Algos and ETH?

i use PPTable and OverdrivenTool to set GPU & Mem for Cn Algos..but if i want to switch to ETH i have to lower Core Clock to reduce power Consumption (and ETH didnt need that much MHz on GPU for good speed) - is there a way to switch on the fly without loading other PPTable and only load other OverdrivenTool.ini?

[heavyarms1912]

hello,

since ETH is worth mining again:

how can i manage to switch my Vega Rig between CN Algos and ETH?

i use PPTable and OverdrivenTool to set GPU & Mem for Cn Algos..but if i want to switch to ETH i have to lower Core Clock to reduce power Consumption (and ETH didnt need that much MHz on GPU for good speed) - is there a way to switch on the fly without loading other PPTable and only load other OverdrivenTool.ini?

?? you don't need to load another ppt table.  you can underclock the core to save on power on ETH.  Both CN and ETH need as high the memory can go.

[nordmann666]

hello,

since ETH is worth mining again:

how can i manage to switch my Vega Rig between CN Algos and ETH?

i use PPTable and OverdrivenTool to set GPU & Mem for Cn Algos..but if i want to switch to ETH i have to lower Core Clock to reduce power Consumption (and ETH didnt need that much MHz on GPU for good speed) - is there a way to switch on the fly without loading other PPTable and only load other OverdrivenTool.ini?

?? you don't need to load another ppt table.  you can underclock the core to save on power on ETH.  Both CN and ETH need as high the memory can go.

but i have PPT for CN with higher Core clocks than needed for ETH mining

so i have (or not?) to load other PPT with much lower p-states for ETH mining - i dont want to load other PPT and reboot every time i switch between ETH and CN algo

[heavyarms1912]

hello,

since ETH is worth mining again:

how can i manage to switch my Vega Rig between CN Algos and ETH?

i use PPTable and OverdrivenTool to set GPU & Mem for Cn Algos..but if i want to switch to ETH i have to lower Core Clock to reduce power Consumption (and ETH didnt need that much MHz on GPU for good speed) - is there a way to switch on the fly without loading other PPTable and only load other OverdrivenTool.ini?

?? you don't need to load another ppt table.  you can underclock the core to save on power on ETH.  Both CN and ETH need as high the memory can go.

but i have PPT for CN with higher Core clocks than needed for ETH mining

so i have (or not?) to load other PPT with much lower p-states for ETH mining - i dont want to load other PPT and reboot every time i switch between ETH and CN algo

you can underclock using overdrive while still using a cn ppt.

[nordmann666]

hello,

since ETH is worth mining again:

how can i manage to switch my Vega Rig between CN Algos and ETH?

i use PPTable and OverdrivenTool to set GPU & Mem for Cn Algos..but if i want to switch to ETH i have to lower Core Clock to reduce power Consumption (and ETH didnt need that much MHz on GPU for good speed) - is there a way to switch on the fly without loading other PPTable and only load other OverdrivenTool.ini?

?? you don't need to load another ppt table.  you can underclock the core to save on power on ETH.  Both CN and ETH need as high the memory can go.

but i have PPT for CN with higher Core clocks than needed for ETH mining

so i have (or not?) to load other PPT with much lower p-states for ETH mining - i dont want to load other PPT and reboot every time i switch between ETH and CN algo

you can underclock using overdrive while still using a cn ppt.

figured it out with using phoenix first time...the voltages will override everything...but now i have to find stable mv again for each card  
but i thought that i will save more power...cn8 with 12khs need 1000W on the wall...fast try with Phoenix miner give me 240Mhs with 900W on the wall