Mining, AMD Drivers & OpenCL

[Collycoin]

I've also been unable to get more than 2xPro Duos working properly in Windows 10.

Problem seems to be be in BIOS which can't allocate enough resources with "Above 4Gb decoding" disabled.
Enabling this option seems to cause all sorts of problems with the Pro Duos, including making BIOS inaccessible thereafter (requiring CMOS reset).

Without it, best I have managed is 5x Fiji with 3 Pro-Duos' installed (wasting half a card) or 4 x Fiji + a RX470 (which can't use same drivers so no=go)
I once got 6 cards recognised briefly by disabling the USB ports but then couldn't use a keyboard/mouse. :-)

I've tried with both X99 and H270 mobos. Hoping for better luck with Z170 Gaming Pro Carbon but I hear that Fijis are a problem there too.

[QuintLeo]

16.10.1 (I think that's the WHQL cert version of the 16.10 range) works reasonably well in my testing of it.

 ALL of the "relive" versions I have ever tried have been lower performance bloated JUNK.

[Cryptohminer]

It's not about PCI lanes, the same X99 WS motherboard which runs 7x 1070 or 7x 1080 Ti's will not run 3 Duo's unless you use the newer AMD drivers which reduce the mining speed by half.

[QuintLeo]

It's not about PCI lanes, the same X99 WS motherboard which runs 7x 1070 or 7x 1080 Ti's will not run 3 Duo's unless you use the newer AMD drivers which reduce the mining speed by half.

 Have you tried any of the newer versions OTHER THAN 16.12 series, which had KNOWN ISSUES on all cards in a mining setup with poor performance?

 There's a reason I specified the 16.10.x series (and the WHQL version in particular).

[Etherion]

I have not had success with the new blockchain driver. Just wondering if that was just me

[QuintLeo]

Hello,

I didn't want to highjack Claymore's thread to discuss something off topic.

Since miners are kind of forced to use AMD's drivers ver 15.12 & 16.3.2 for best performance or sometimes even for the miner to work at all
Is there a way to install a newer driver then copy/overwrite the needed old OpenCL stuff from 15.12 ?

 Use 16.9.2, it matches the performance of 15.12 very closely even on old GCN cards while supporting up to the RX 4xx series.

 The new "blockchain" driver is a disaster and a waste of time in my limited testing of it.
 It worked on my RX 470 cards but NOT well, and didn't even INSTALL on anything older.


 After doing some machine building this week, I was reminded that 16.10.1 was NOT the WHQL version I was thinking of, does not appear to support APUs at all - though it DID work OK on older discrete GPUs when I was testing driver versions.