And short answer is (which also applies to gtx1080 , gddr5X card) :
GDDR5X memory have GOOD throughput (which makes it fine for zCash),
but very BAD latency, which also makes it BAD for ETHereum minig.

I doubt ANY software optimizations could be made regarding GDDR5X cards and ETH,
so ... just avoid them, unless you planned to mine zCash.

p.s. You caould also make zCash test, i am also curious if you gain some speed on gddr5X card vs "normal" one.

b.r.
Alex

ubiqpool.io ,

will you start sending us our coins ? it's over 24h and no transaction yet.
coins confirmed - zero transactions.

give some official statement after all.

Kazi kinezu da sisa karu, i on i njegovih 500 komada rx570, nek izvadi pare pa mu onda daj.
Jazavac ima karte sa najboljim RAM-om ... mrtvi xfx sa Elpidom ... 30.5MH/s na 1125MHz gpu ...

Dobar editor, samo tvoj i ovaj od IoKnota prepoznaju ELpida biose i rx5x0 karte ...

Mozda nije losa ideja da ubacis Advanced mode, sa svim onim zezalicama tipa SubSys id da moze da se menja, itd,
moze da bude zanimljivo za neki cross-flash (rx570 u rx470 i obrnuto...).

p.s. A ovim nubinama sto u 2017. ne znaju sta je exe packer ili code obfuscator ...
takodje nek se obese, sa sve njihovim "decijim antivirusima".


pozzz

Ramp up voltage on that card a bit up ... see what will happen, it should work normal with -i 5

Also, take off the extender cables, clean contacts on both card and small board that goes in motherboard. Re-test.

and ... last but not least - you mentioned "modded" 280x ? Which way it was modded ? You flashed some modded bios,
that you found on this forum (bad idea), or you manually modded lower straps into higher ones ?
also, what is the card manufacturer / exact model ?


If you mean clock/voltages ... gpu 1200-1233 , ram 1750, voltage, depending on asic quality from -80 to -96, memory straps from 1500MHz.


Of course, whan card is in slot, and working at higher PCI-E ratio/generation, cpu-to-gpu latency is lower, and thats why you see a bit higher speed.


b.r.
Alex

After some couple of days testing, i find 16.3.2 drivers performs better in terms of stability than 15.12,
on all my 7970/280x/380/390 rigs...
And it happens on v12.0 and v12.1 miner ... (got some strange instability with 280x rigs, and tried 16.3.2,
everything works perfect so far).

b.r.
Alex

Try disconnecting card by card, and cleaning pins on graphics card, also clean pins on extender cable that goes to mainboard,
with (i know it's funny, but works) simple toilet paper slice, reconnect it all back,
put intensity -i 4 , clocks 1030-1040 gpu / 1500 mem , and test again.

This miner needs a bit higher voltages than before (or lower clock - whatever you choose).

Also, on this version of miner, some "weakly connected cards" or bad extenders are showing their true nature...

as i tested, drivers have nothing with it, at least in my case(s).
15.12, 16.10.x, 16.11.x ... all works normal (some crashed, but after cleaning pcie-extenders, all gone well).


b.r.
Alex

Another bug is - broken -di command on (mixed?) system with 3 x RX-470 + 2 x R9-280X

ie: if i put -di 2,3 it starts 3 cards instead of 2 ...
everything workis fine, if i put -di 0,1,2,3 etc.

**** EDIT:

All works fine if i put -di 234 ...

Didnt pay attention, since i just copy/pasted bat from older version,
and it worked on previous version(s) ... strange

so, is it bug or not ... now i'm not even sure

b.r.
Alex

Question is - how much can you pull out of Pascal (which is modded sha256) out of current SGMiner speed (which is on other hand, almost full speed at sha256) ?

IMHO, it may have some sense on your's (and my too) favourite card - 390/390x, which, in my opinion doesnt get full speed on PASCAL.

If it's some 10% or more (or 15-20% on 390/390x), may have some sense to make a miner for it ...

b.r.
Alex

ASRock FM2A88X+ BTC
http://www.asrock.com/mb/AMD/FM2A88X+%20BTC/

Or ... if you are overseas (USA), there's a new products in the field ... old good BIOSTAR!
Dirtcheap of course, and intel platform.

http://www.biostar.com.tw/app/en/mb/introduction.php?S_ID=734
and
http://www.biostar.com.tw/app/en/mb/introduction.php?S_ID=849


Absolutly YES. Big chance that even 6 of them will work normal (and that is not the case with RX series).

b.r.
Alex

Yes of course. Mixed combinations work normal. Tested with 16.11.1 drivers, all works normal and good speed.
AsRock FM2+ BTC Board, Win7/x64 Ultimate, 6xGpuMod.


Yes, but not publicly available in most cases. If you have many cards, PM me for custom mod. ~5% speed increase guaranteed.


~370+ H/s @ 1085/1500MHz, -65mV



5x Polaris Cards 100%, 6 Cards ... hardly, on boards i tested (AsRock BTC, Intel and AMD).
Maybe in mixed configurations (ie: 4x Polaris + 2x Hawaii/Tahiti/Tonga) can work, didnt have time to test, though


b.r.
ALex

Your bios mod for 280x sucks, Sapphire 280x @ 1085/1625 = 305 H/s (Hynix), Elpida gives even more...
Stock clocks with bios mod gives ~270 H/s ...


Put 470 card in x16 slot, and the rest 2 next in x1 slots, 390's in rest 2 slots.
Should be fine. Pay attention that "synchronize similiar cards" option doesnt work correctly on newer drivers.
Uncheck it and set each card manually.

p.s. 16.11.1 Drivers give normal speeds in Polaris/Tahiti combo's, tested.

b.r.
Alex

In fact, wrong checksum on memory timings doesnt matter,
So i force flash it with atiflash from command prompt.

P.s. i also have some msi 280x, didnt check which memory is inside,
But bios is larger than on older 280x/7970 (they put new serial flash ic in, its double the size),
Modding gave me some solid results, should be good for your card, too. (Sustained 80+ sols/s).

@others, dont flash this bios randomly. It's gonna brick your cards. It's only for mentioned msi card.

Have anice day.

B.r.
Brka

Just ask ... will always mod for you 

Download https://drive.google.com/open?id=0B6R3UoULhg3cbWYwVlYzNmUtSGc

Modded with straps from 1250MHz --> 1375MHz , 1500MHz  (1500MHz Should kick ass - ~80+ sols/sec)


p.s.1 - Flash with AtiFlash.exe from command prompt,  atiflash -f -p X rom_name.rom  , x = card number given by atiflash -i

p.s.2 - This is not some "Dirty hack" with timing tables from some totally other card, but timing table from same card's bios, for that specific memory (BFR).

b.r.
Brka

Any news regarding bittrex exchange trading start ?

please keep it public, we want fair trading,
not like others, ninja-launch on bittrex and people dumping prices first hour.

whatever you do, just don't disappear, and all will be fine
(like other devs, disappear - coind dead, the end.)

regards

paranoia .... 5 minutes without any post and coind dead, lol

Now, since I cant contact you other way,
because you don't have "normal" contact ways, like all normal pools and people,

I lost many SnakeCoin because I couldn't withdraw it, your pool contact on IRC is banned.

will you ever make some normal contact form on your pool, or should we all avouid your pool in future ?
and, of course, that someone should reply on that ?

plus, why you put 2% fee, when all others are 1% or less ? not enough money or what ?
(not to mention that constant vardiff changes, and calculated earnings vs real earnings, which are always less than should be)

one small step to permanently left your pool, now and forever, and with me some dozen of people,
so waiting to hear more from you.

b.r.