Quote from: FRK on February 03, 2018, 10:35:59 PM

Hi guys,

First of all, this topic has been very informative. Thank you all very much for sharing your knowledge and information

Sadly, I didnt do my homework before buying 12 x Sapphire Radeon RX 560 Pulse 4GB (11267-18-20G). I thought I got a good deal, only later to find out this model is severely gimped. As stated before in this topic, it only has 896 shaders, less TMU, 1500Mhz and less Bandwidth:

https://i.imgur.com/lIYIFl5.png

I cant return them anymore so I have to make the best of it. However, it looks like my card is just a softlocked normal Sapphire Radeon RX 560 Pulse OC 4GB (11267-00-20G). I have been able to unlock the shaders to 1024, the TMU to 64 and my memory chips are also normal MT51J256M3 (MICRON) a.k.a. they run at 1750Mhz by default.

https://i.imgur.com/dJfr57K.png

Ive tried different straps (from Wacko, Branko, One Click Timing from PSBEditor 1.6.7, the BIOS straps website with the Nyan cat logo and the top secret 15Mhs strap) and was able to push this gimped card to 12.1MH/s. Sadly, I cant do much more because of the limitation in Bandwidth. Its locked to 96 GB/s and I need the full 128 GB/s in order to push the hashrate even further. Changing/raising the TDP and TDC made no difference; the cards just keeps using the same wattage (which is odd I think).

My question: Is it possible to unlock/BIOSmod the Bandwidth to 128 GB/s as well?
@Branko: Do you see any room for more improvements in my BIOS mod?

For those of you interested in my ROM:
Stock ROM (without any modifications): http:// data .freek. ws/public/11267-18-20G/RX560_STOCK.rom
ROM with shaders unlocked to 1024 (no other modifications): http:// data .freek. ws/public/11267-18-20G/RX560_UNLOCKED.rom
ROM with unlocked shaders, Brankos strap and increased max. memory frequency (for use with claymore): http:// data .freek .ws/public/11267-18-20G/RX560_12MHs.rom
(REMOVE THE SPACES IN THE URL. I could'nt link directly to my server, it got flagged my bitcointalk)

The last ROM (the one with Brankos strap) will give you 12.1MH/s at Ethereum mining using Claymore 10.6 and the following settings: -cclock 1275 -mclock 2225 -cvddc 1000 -mvddc 850

Thank you very much for your time

Windows 10 - 64-bit
Biostar TB250-BTC PRO Ver. 6
AMD Adrenalin 18.1.1
Claymore 10.6

I have 3 of the very same card only with hynix memory. I can manage to get 13.7 sable with memory 2000, core 1050 mem voltage 850 and polaris oneclick timings.

Only problem i would like to try is there any impact to unlock it to 1024 shaders.

I cant use your bios, because difference in memory. Any chance you can have a look and try to unlock shaders to my card as well?

Here is the original BIOS: https://www.upload.ee/download/7968607/6c834c23777f12f89aa5/RX560_sapphire_hynix.rom