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AMD Radeon VEGA. 1950H/s at CryptoNight with low power consumption

AMD Radeon VEGA is the champion of GPU cards for mining. You can easily get around or above 1950H/s at CryptoNight and also over 44MH/s at mining Ethereum, and all with a medium power consumption. Prices of VEGAs are continuously growing and you can imagine why.

 

AMD Radeon VEGA is the champion of GPU cards for mining
AMD Radeon VEGA is the champion of GPU cards for mining

AMD Radeon VEGA 56 and 64. It’s time to get the same hash rate but with lower power consumption

AMD Radeon VEGA is designed for folks who want to spend a lot of money to buy a video card for mining, but with the expectation of big results in mining. It’s ideal to mine CryptoNight, but it’s also a superpower card with other algorithms.

For less money, you can’t buy the good performance at mining of VEGA cards. It’s not clear a bargain, but it’s the best power you can buy now. A rig of AMD Radeon VEGA cards is more powerful than the most part of ASICs, so you can understand why all the miners want to buy VEGA cards.

There’s not a huge difference between the GPUs at the heart of the top-end RX VEGA 64 and the lower one RX VEGA 56. As the name suggests, the second-tier card has 56 compute units (CUs) compared with the 64 CU count of the higher-spec card. That means 3,584 GCN cores into the RX VEGA 56 and 4,096 GCN cores in the RX VEGA 64. In both cases, we are talking about 8GB of HBM2 video memory and a 2,048-bit bus. This is pure power, like for the new Ryzen CPU processors.

You don’t need to make a BIOS modification to push high the VEGA 56, so a big WARNING: if you’ want to do it anyway and aren’t really too techie, pay attention because you can basically brick your GPU if you do it incorrectly.

Let’s start. First you need a Linux or Windows 10 operating system with installed the Radeon Blockchain driver, this is the official driver specifically for blockchain computing released by AMD and you can find it at http://support.amd.com/en-us/kb-articles/Pages/Radeon-Software-Crimson-ReLive-Edition-Beta-for-Blockchain-Compute-Release-Notes.aspx.

Only if you want to mod the BIOS of the VEGA 56, you need the AMD/ATI ATIFlash utility. This is the program to flash and back-up the BIOS of the card. For Windows 10 at https://www.techpowerup.com/download/ati-atiflash/ and for Linux at https://bitcointalk.org/index.php?topic=1809527.0. In this case, you need also the VEGA 64 BIOS. If you own a 64 card, you can take the BIOS from that. If not, you should check for an original VEGA 64 BIOS on AnorakTech.

I suggest you also to get one of the following programs, they are for editing some parameters (especially frequencies and voltages) in the modern AMD cards. So with these, you’ll be to tweak a bit more your cards. Get OverdriveNTool for Windows at https://forums.guru3d.com/threads/overdriventool-tool-for-amd-gpus.416116/ or AMDCOVC for Linux at https://github.com/matszpk/amdcovc.

Finally, the miner. I always used XMR-Stak and I like it, but you can find really a lot of programs that do the same thing. It is both for Windows 10 and Linux, you can find binaries and sources at https://github.com/fireice-uk/xmr-stak.


To push the VEGA cards higher on mining, you must follow one of the following resources because these are absolutely the best instructions to power the VEGA cards. So take a look at:

Monero and Vega – the definitive guide

Monero mining tutorial for VEGA over 2000+ H/s

Vega mining guide – No Wattman. No flaky HBCC

After this, you are able to have your VEGA above 1950H/s with a power consumption of 150-165W.

If you want to get little less hash rate but with big less power consumption, you can do the next. First, modify the OverdriveNTool VEGA cards profile:

[Profile_0]
Name=Vega64
GPU_P0=852;900;0
GPU_P1=991;900;0
GPU_P2=1084;900;0
GPU_P3=1138;900;0
GPU_P4=1150;900;0
GPU_P5=1202;900;0
GPU_P6=1212;875;0
GPU_P7=1360;875
Mem_P0=167;900;0
Mem_P1=500;900;0
Mem_P2=800;900;0
Mem_P3=1050;875
Fan_Min=3000
Fan_Max=4900
Fan_Target=75
Fan_Acoustic=2400
Power_Temp=85
Power_Target=0

[Profile_1]
Name=Vega56
GPU_P0=852;900;0
GPU_P1=991;900;0
GPU_P2=1084;900;0
GPU_P3=1138;900;0
GPU_P4=1150;900;0
GPU_P5=1202;900;0
GPU_P6=1212;875;0
GPU_P7=1360;875
Mem_P0=167;900;0
Mem_P1=500;900;0
Mem_P2=800;900;0
Mem_P3=925;875
Fan_Min=3000
Fan_Max=4900
Fan_Target=75
Fan_Acoustic=2400
Power_Temp=85
Power_Target=0

And second, set the amd.txt file for each VEGA card in XMR-Stak as below:
"gpu_threads_conf" : [
{ "index" : 0,
"intensity" : 1932, "worksize" : 8,
"affine_to_cpu" : false, "strided_index" : 1, "mem_chunk" : 8,
"comp_mode" : true
},
{ "index" : 0,
"intensity" : 1932, "worksize" : 9,
"affine_to_cpu" : false, "strided_index" : 1, "mem_chunk" : 8,
"comp_mode" : true
},
],

Save the amd.txt file you just edited and re-run the XMR-Stak application. Check the new hash rate by pressing ‘H’. If you need one more step in consumption reduction, you can also change the 1932 value to 1792.

– UPDATE: many people suggest me to use XMRig to get a better hash rate. I remain with the XMR-Stak program, but if you want to try this is the link: https://github.com/xmrig/xmrig –

After that, your VEGA cards should work around 1850-1950H/s but with a power consumption of around 130-145W. Definitely better, not?

Obviously, if you don’t pay the electric energy (the power), don’t mind about that and push your VEGAs to the limit!