Monthly Archives: August 2017

New AMD Vega GPUs yield disappointing mining performance out of the box

Reviews of AMD’s new Vega GPUs are starting to become available from reputable sources, and early mining test results don’t look great. Tom’s Hardware posted a first look of a Radeon RX 64 Vega (8GB) card yesterday, and only managed to hit 30.9 MH/sec on the latest version of Claymore’s miner. That’s comparable to performance of BIOS-optimized RX 4xx/5xx cards, and they draw considerably less power.

Keep in mind that these are out-of-the-box results, and no doubt higher speeds will be achieved once miners are able to experiment with clock speed and BIOS settings. But even if modders are eventually able to coax 40 MH/sec from Vega GPUs, they’ll probably never be a top-tier choice for miners, given their power consumption and high up-front cost ($599+ MSRP, although they’re currently selling for over $1,000 on Amazon).

Recent Ubuntu release causing issues with AMD 17.x drivers

Reader Zelda brought this advisory from AMD to my attention: it describes some serious issues with Ubuntu 16.04.3 and the latest (17.x) versions of AMD’s GPU drivers. Some of you have written in recently describing black screens after installing AMD’s drivers when following my Linux mining guide, and it looks like this is the culprit.

If you’re running into issues while trying to get your Linux-based rig up and running, make sure that you stick with 16.04.2 for now. I recommend Xubuntu 16.04.2 in my guide, and that’s safe to use—just skip the “sudo apt-get dist-upgrade” command at the end of step 3 to avoid updating to 16.04.3.

If you already have a Linux rig running AMD GPUs in operation, make sure that you hold off on OS/security updates until after this issue has been resolved! If you’ve already upgraded and are now experiencing problems, you can try downgrading your AMDGPU-PRO driver to version 16.x, although I haven’t been able to confirm that non-17.x drivers will definitely work on 16.04.3 without issues.

Hopefully AMD and Canonical can work out a fix quickly.

Bitcoin soars past $4000 to new all-time high

Bitcoin is currently trading at over $4,100 on Coinbase and most other major exchanges, after climbing nearly $500 over the past 24 hours. The current price represents a ~600% increase compared to just one year ago!

The relatively uneventful hard fork on August 1st, combined with the recent consensus to lock in SegWit (which paves the way for the Lightning Network) must have investors feeling bullish. Successful activation of SegWit (and later, Lightning) should remedy many of Bitcoin’s recent scalability issues, at least in the short term.

Coinbase reverses position; will support bitcoin cash after all

Coinbase just published an update that details an apparent change of heart on bitcoin cash: they’re working on supporting it by the start of 2018.

This means that if you have any bitcoin that you left in Coinbase’s hands during the hard fork a couple days ago, you’ll get your fair share of created bitcoin cash after all. Eventually, anyway—your bitcoin cash will be available to you whenever Coinbase officially launches support for the new coin in the coming months.

This is good news—Coinbase’s previous position no doubt left many of their customers feeling as though the popular exchange was openly stealing from them.