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Sonnet crams Thunderbolt 3 eGPU into original Mac mini-sized enclosure with eGFX Breakaway Puck

Mac upgrade company Sonnet has released the eGFX Breakaway Puck, enabling multi-display capabilities in a portable enclosure for Thunderbolt 3 computers.

The eGFX Breakaway Puck comes in two models, one with a Radeon RX 560 similar to that in the high-end 15-inch 2017 MacBook Pro, and a second with the Radeon RX 570 as found in the high-end 20.5-inch 2017 4K iMac and one model of the 5K iMac. The enclosure provides three DisplayPort 1.4 ports, and one HDMI 2.0b port, all capable of 4K resolution at 60Hz.

The unit provides 45W of charging power to connected laptops through the Thunderbolt 3 port. While not sufficient to maintain full charge when a computer is under heavy load, the unit provides sufficient power to significantly reduce battery drain — and will charge a connected computer fully given time when not in use.

The unit measures 6 inches wide, 5.12 inches long, and 2 inches tall. It weighs 3.2 pounds with the RX 560, and 4.3 pounds with the RX 570. A 0.5 meter Thunderbolt 3 cable is included in the package.

The Radeon Pro 560 has a peak performance of up to 1.9 teraflops, and has 16 compute units, and a memory bandwidth of 81 Gigabytes per second. The Radeon Pro 570 is faster at 3.6 teraflops, with 29 compute units, and 218 GB/S memory bandwidth. At present, it is not clear how much the Thunderbolt 3 interface will constrain performance versus a "native" chip, if noticeable at all.

A VESA mounting bracket is available, which secures the Puck to the back of a monitor or multiple display stand. A short DisplayPort cable is included with the VESA kit to assist with cable management.

Apple's compatibility with external GPUs is limited until the spring. The RX 570 works out of the box, with no software installation required, but the RX 560 requires a relatively simple hack to use — for now.

AppleInsider will be examining the new eGPU offering in the weeks to come.

The eGFX Breakaway Puck Radeon RX 560 has a retail price of $449. The higher-end eGFX Breakaway Puck Radeon RX 570 retails for $599. The optional PuckCuff VESA Mounting Bracket Kit sells for $59. All models are immediately available.



35 Comments

jameskatt2 16 Years · 722 comments

Booyah!  Wow!  Fantastic!  So INEXPENSIVE!  This is going to sell like pancakes. It easily is a stocking stuffer for Christmas.

Thank you Sonnet!!!!!

OutdoorAppDeveloper 15 Years · 1292 comments

Wouldn't it be better if Apple built decent GPUs into Macs to begin with?

tenthousandthings 17 Years · 1060 comments

Could someone explain who buys this for a Mac? I'm not asking rhetorically, and I know AI will answer this question in their review, but what's the basic idea? Is it about gaming?

bradford_kirby 8 Years · 81 comments

grangerfx said:
Wouldn't it be better if Apple built decent GPUs into Macs to begin with?

Me - for example.

But by and large the consumer PC market has died and that includes the Mac.

As much I love them - the segment *the only segment* that’s growing is pc gaming. Even MICROSOFT pumped actual power into thier console and while that’s great Apple is not into it. 

I suppose theyre declining actual investment in that segment because these other companies have excellent workarounds now but I wager it’s got something to do with thier casual gaming profits... or because Macs run both Operating Systems - which is probably the smartest thing any computer maker has done in 10 years. 

Now that they they can play GTA Online and Chatology/Pixelmator etc. 

Im not just a one off. People love Macs but can’t afford two setups. An under 500$ box that turns a MacBook Air into a ROG or whatever should be illegal. 

Thankfully it’s not. 

petieg 14 Years · 24 comments

I assume this is for gaming and graphics professionals.  Seems as though mobile GPUs in MBP's aren't quite powerful enough for intense graphics situations. Something like this would allow for almost any TB3 Mac to be able to plugin and have graphics as powerful as a Windows workstation-class PC (ie. AutoCAD, gaming rigs, Adobe Pro apps, Video editing apps, etc.)  This would indeed be a boon to laptops.