Yes, I'll do this and see what we get. Regarding the drivers, I think 18.3.4 is just not working for me, even on CN7 I get lower hash-rate simiar to what I used to get on Blockchain driver about 150 H/s less or 50 H/s less on heavy/Alloy, but 18.6.1 has been very stable for me. So I avoid 18.3.4 totally. As for heavy/Alloy algo while using the SRB 1.6.4, I get GPU crash right after DevFee sometimes recovers after resetting the miner but other times I have to close the miner and restart it manually. I noticed this happened on 1.6.1 too but apparently less often. I don't have a clue what the cause could be, but I guess it might be something to do with change of algo from Alloy to DevFee and back. Unfortunately I have not had the chance to try any other heavy algo yet. I'll set the log and see what happens and come back. Thanks

Vega FEs are allergic to 18.3.4 and I'll get less hash-rate on Alloy/Heavy and CN7, on Alloy there is alot of STALE shares too, so the only viable driver is 18.6.1.

Results for a rig having 5 Vega FEs SRB Miner 1.6.4:
driver 18.6.1
CN7  = 11060 H/s
Alloy = 5670 H/s
note: Mining Alloy, on DevFee we get miner crash or error

driver 18.3.4
CN7  = 10900 H/s
Alloy = 5580 H/s
note: Mining Alloy, there is a lot of STALE shares.

Results for a rig having 5 Vega FEs SRB Miner 1.6.1:
driver 18.6.1
CN7  = 10910 H/s
Alloy = 5630 H/s

driver Blockchain Aug 23
CN7  = 10910 H/s
Alloy = 5630 H/s

=========================================
So in conclusion:
18.3.4 won't work for Vega FEs. For Alloy we have to use 1.6.1 and we get similar hashrates as blockchain driver.

Edited: The said crash/error occurs not on DevFee but right after when resuming!

Alright, I am now mining Alloy and there are some issues, I am still using the 18.6.1 which is great on CN7, on Alloy/heavy I get about half that hash power which is natural. But I seem to get some STALE shares and also the moment DevFee kicks in, I get a crash or ruined miner needing a reset for normalization. I am going to install 18.3.4 as you said which is supposed to be better on heavy algos and see if it improves.

Assuming you mean on CN7.
Yes, I get 2205 - 2222 H/s on each Vega FE using 18.6.1 drivers and SRB Miner 1.6.4, I have explained more details on a few pages earlier. Even with Blockchain driver and older SRB Miners you should get at least 2100 H/s.

I have Vega FEs, but I assure you "having the latest windows version" is the most irrelevant and overrated comment you see everywhere! I am using a Windows 10 Build 1501 and never had any problems, except for "remote desktop apps that need newer versions of windows" but never had any mining problems.

Edited: It is actually 1511

With SRB Miner 1.6.4, my Vega FE rig is currently doing a stable 11060 H/s. Each Vega FE gives a minimum 2205 H/s and a maximum of 2222 H/s, each card is slightly different as you know. Now the temperatures are between 58 and 60 C, only one card rarely goes to 61 C and then gets back! So I think this is pretty cool. I set memory clock of 1100 MHz and memory voltage of 810 mV for all of them. I set slightly varying core clocks however as each one behaves slightly different but generally it is in the range of 1502-1552 MHz and core voltage of 950-1000 mV.

Using OverDrive when I had Blockchain drivers, I could set core clock to 1600 MHz and core voltage to 890 mV which is weird, memory was 1100 MHz along with 880 mV, this would get me 10910 H/s (even with SRB Miner 1.4. with slightly higher (extra ~5 C) temperatures. So I'm not sure if the rig is consuming more power now than before, but extra 160 H/s must be mostly related to SRB Miner 1.6.4 and the new drivers.

I also noticed fan readings are jumpy at times both in the WattMan and the SRB Miner so this must be sensor readings from the driver or maybe really the fans are aging already. These hashrates that I've mentioned are for CN7 only.

Thanks for the great Miner! I think some extra features may be handy and will dig it later.

I managed to get the 18.6.1 driver work on my Vega FE rig so SRB Miner 1.6.4 has become effective. getting a somewhat stable 11060 H/s now... I will post detailed information about this later.

My Vega FEs are set to CC: 1550MHz | CV: 890mV & MC: 1100MHz | MV: 880mV, their fans are running above 4800 RPM and temperatures are between 65 to 68; also for me the bios switch won't make a difference.

So based on what I have read here: On SRB 1.6.3 with Vega 64s, people are getting about 2165 H/s a bit more or less. I have been getting ~2180 H/s on each Vega FE with blockchain driver since SRB 1.5.4 or so....  If I cool them even better, I'd get 2200 on them too. So this all means as a Vega FE owner I should stick with my 1.6.1 and still have 5 or 10 H/s more than Vega 64 with the latest driver, not that it matters. But I am sure if ever they make another proper blockchain driver these cards can do much more.

This works for my Vega FEs
@echo off
cd %~dp0
devcon.exe disable "PCI\VEN_1002&DEV_6863"
timeout /t 3
devcon.exe enable "PCI\VEN_1002&DEV_6863"
timeout /t 3
pause

Thanks, but it appears that doesn't help Vega FE cards. I tried 1.6.3 but it is the same so I am using 1.6.1 again. I'll mess around with it again and will update.

Edited: If I have to give up on Blockchain drivers for Adrenalin 18.6.1 to see these changes, then it will be a dead end for me, Vega FEs can't be overclocked on those drivers.

I have a rig of 5 Vega Frontier Editions. I have not tried on heavy algo but the CN7 is giving me about 100 less. Intensity is set to 120 with double threads. I am very happy with SRB Miner.

with XMR STAK, if I set intensity to 2048 for each thread then I would get closer to the hashrate of SRB but still 100 or so less. With SRB 1.6.1 I am getting a stable 10.9 KH/s, if I added another Vega FE card it would be 13 KH/s.


You can see photos of my rig and its making here: https://postimg.cc/gallery/ivrtjh24/

As you know Vega FE cards have 16 GB of HBM2. Is it possible to run more threads on these GPUs ? It would be awesome if there was a way to utilize this memory. I would appreciate if you could provide an answer to this question, as you are writing the code for SRB Miner and you know better how much memory can be used.

Thanks for the awesome SRB Miner

I can confirm that I am getting about 100 less hash/s on CN7 using the SRB Miner 1.6.2 instead of 1.6.1.

Yeah just changed it. Should work now.

We have seen many rigs, have we had enough!? Here I present another unique rig, more hexagonal than circular. Made it with PVC pipes painted black and composite aluminum and can have 6 cards, though currently it has 5.

Here is the hardware:



GIGABYTE H110-D3S                 x1
EVGA 1200W 80+ Platinum           x1
EVGA 1000W 80+ Platinum           x1
AMD Vega Frontier Edition Air     x5(+1)
HyperX DDR4 2400 MHz 4GB          x2
Intel SATA 160 GB SSD             x1
Intel Skylake PENTIUM G4400       x1



Running a Windows 10 x64 build 1511 (old)!!! Even this version of windows does not make any problems for mining.
I use mainly SRB Miner 1.6.1 but you can get a very close hash-rate with XMR Stack too.

I get a stable CN7 hash-rate of 10.9 KH/s with SRB Miner and 10.85 with XMR-STAK (intensity set to 2048), adding one more Vega FE to make it 6 cards it can surely reach 13.1 KH/s.