2018 Mac Mini Egpu Usb C Ssd Gc Alpine Ridge Aic Thunderbolt 3 Dock

2018 Mac mini Review – Heedlessly Renovated

eGPU Mac, eGPU Reviews, External Graphics Card 17 Comments


After four years of neglect, the Mac mini returned to the spotlight in late 2018. The miniature headless Mac hasn’t fared well, now taking on a gray pallor and running a fever. Its Intel 8th generation 65W processor is an internal flame the cooling system can barely manage. Some may say the lack of discrete graphics is the final death knell. At eGPU.io we think this may be a blessing in disguise.

The other redeeming feature this 2018 Mac mini brings is what makes it a capable host for external graphics. Apple system designers connected a pair of Titan Ridge [JHL7540] Thunderbolt 3 controllers directly to the CPU with dedicated 4 PCI Express lanes each. High-performance Thunderbolt 3 devices such as an external graphics card do not have to share PCIe bandwidth with any other peripherals. 

2018 Mac Mini Visiontek Mini Egfx R9 Nano Mouse Keyboard View

2018 Mac Mini + VisionTek Mini eGFX + R9 Nano + Display + Keyboard + Mouse

Hardware Specifics

The 2018 Mac mini comes in two configurations, three processor choices, and lots of big money upgrades. The base configuration has an i3-8100b quad-core processor, 2x 4GB RAM modules, and 128GB PCIe NVMe flash storage. Priced at $799, it’s a whopping 60% price hike over the last generation Mac mini base model. It gets worse with the higher configuration. At $1,099 you get a Mac mini with a hex-core i5-8500b, 2x 4GB RAM modules, and 256GB PCIe NVMe flash storage. The 6-core, 12-thread i7-8700b is the most desirable option and only available build-to-order. Another BTO feature is the 10Gigabit Ethernet port for $100. Maxing out a Mac mini would cost you $4,199 [i7 CPU + 64GB RAM + 2TB SSD + 10GbE].

Compared to the 2014 Mac mini that had two Thunderbolt 2 ports, the four Thunderbolt 3 ports are the only added value in the 2018 Mac mini. Apple removed two USB-A ports, SD card reader, and Audio IN jack. One much-requested change in this new Mac mini is the RAM slots. We can now replace the RAM modules unlike the soldered RAM in the previous iteration. Unfortunately this is the only upgradable internal component because CPU and NVMe SSD are soldered to the logic board. Expansion capabilities are possible externally through the Thunderbolt 3 ports.

One new component that has made its way into all 2018 Macs is the Apple T2 Security Chip. It’s a co-processor that runs the Mac subsystem. Apple touted the T2 chip provides better security and a new level of integration. It handles the SMC, internal SSD encryption, audio and image controllers as well as Touch ID in compatible models. However there are concerns regarding ecosystem lockdown once all Macs are equipped with the Apple T2 chip. For example, this gatekeeper prevents our community eGPU solutions for older Macs, Nvidia graphics cards, and Boot Camp. There are also stability issues with Bridge OS that lead to random reboot and forced Recovery boot.

2018 Mac Mini Logic Board Assembly Removal

2018 Mac Mini Logic Board Assembly Removal

2018 Mac Mini Intel Cpu Heatsink

RAM Slots, Intel CPU, and Heatsink

2018 Mac Mini Logic Board Apple T2 Chip

Apple T2 Security Chip

For thermal management Apple used a more substantial cooling system compared to previous Mac minis. Intake is through the circular gap between the plastic bottom cover and metal bottom shield. A single blower fan exhausts hot air through the vents on top of the rear ports. From my and others’ observations, it’s not effective enough for the i5 and i7 configurations. Due to thermal throttling additional cooling solutions would be needed to sustain maximum performance. One of our forum members @Sebastian presented a fun and effective DIY solution, aptly named Glory Blow Hole.

I ran the Mac mini vertically without the plastic bottom cover to help airflow. After testing the i5, I needed to exchange it for the i3 configuration because of overheating. The lack of discrete graphics is partially due to this design’s limited thermal envelope. If Apple were to implement an Intel Kaby Lake-G that combines an AMD dGPU, this cooling system would not able to keep up. The Intel UHD 630 integrated graphics card can power up to three 4K displays. Don’t expect it to do much more though. One HDMI 1.4 stream is wired to the HDMI port, while the two DisplayPort streams are routed through the Thunderbolt 3 controllers to dynamically handle two 4K monitors or one 5K monitor.

The only worthwhile custom option in the 2018 Mac mini is 10Gigabit Ethernet at $100. This 10GbE port is beneficial for accessing high-performance NAS. This alleviates the biggest pain point of the Mac mini, the internal soldered flash drive. Storage is the most over-priced to option through Apple. At 22 Gbps external Thunderbolt 3 NVMe SSD yields very close performance to the internal flash drive. USB-C 3.1 gen 2 is another external storage option that’s more affordable than Thunderbolt 3, but is limited at 10Gbps speed and taxes the CPU. From a service provider perspective, I have serious concerns about the lack of solutions for data recovery.

2018 Mac Mini Unboxing Rear Port Tape

2018 Mac Mini Four Thunderbolt 3 Ports

2018 Mac Mini Titan Ridge Thunderbolt Controllers

Titan Ridge JHL7540 Thunderbolt 3 Controllers

The best feature of this 2018 Mac mini is its dual Titan Ridge controllers and four Thunderbolt 3 ports. They allow external access to PCIe components. This was Apple’s intention all along because these Thunderbolt 3 controllers have direct access to the processor. This routing is superior to the most common Thunderbolt 3 connection where the TB3 port goes through the Platform Controller Hub prior to accessing the CPU. It bypasses the PCH which shares bandwidth with other internal PCI components such as NVMe SSD, Wireless card, and 1GbE card.

I wish Apple had gone the extra mile and leveraged the USB-C Power Delivery feature. It would have been a first in mainstream desktop computers. This innovative approach would make the 2018 Mac mini a headless Mac portable that uses a small battery to store system settings then draws up to 100W from an external power adapter or enclosure when it’s running. Instead Apple took the safe approach by using an internal 150W power supply (12V 12.5A). This PSU takes up nearly 25% internal space of the Mac mini which could be repurposed for better cooling or a smaller footprint.

2018 Mac Mini Psu Label 150w

2018 Mac Mini Lite-On 150W PSU

2018 Mac Mini Psu Screws

Power Supply Location and Size

Outside the Box

I like headless Macs. Throughout the past two decades these desktops have fallen into a cycle of hits and misses from the PowerMac G4 Cube to the Mac Pro tower and from the Mac mini to the trashcan. The key to whether a Mac desktop can succeed is its upgrade path. While you can swap almost all components of the G4 Cube and Mac Pro trashcan, there are little to no third-party parts available. First-party parts are either expensive or old as dirt when they become available.

The Mac Pro tower in a classic desktop form can accommodate all kinds of third-party components through its four internal PCIe slots. It remains relevant for hardware upgrades seven years after discontinuation. Recent firmware updates to the Mac Pro 5,1 allows NVMe M.2 solid state drive to be used as boot volume. Nvidia RTX graphics cards somehow come with UDA alternate vBIOS to provide boot screen for the Mac Pro towers. One of the more outlandish eGPU builds I put together in 2018 involved adding Thunderbolt 3 (Titan Ridge AIC) to the Mac Pro 5,1.

2013 Mac Pro G4 Cube 2018 Mac Mini

2013 Mac Pro + 2000 G4 Cube + 2018 Mac Mini

Mac Pro tower + Triple RX 480s

The 2018 Mac mini has this same potential with third-party component upgrades externally through its four Thunderbolt 3 ports. While they are capped at x4 PCIe 3.0 connection, many PCIe components don’t saturate this amount of bandwidth. External GPU and NVMe SSD are the exception. One of the more unique Thunderbolt 3 expansion enclosures is the AKiTiO Node Duo. As the name implies it has dual PCIe slots. In my review of this AKiTiO enclosure, I paired a whole mix of PCIe components alongside the eGPU. The upgrades this 2018 Mac mini needs the most are a high-capacity NVMe drive and a powerful graphics card. Well, it’s a match made in heaven when I set the Mac mini on top of the Node Duo. It’s as if this is now a Mac mini Pro with PCIe slots accessible through Thunderbolt 3 ports. Instead of spending an extra $600-$800 to configure a Mac mini with 1TB internal storage, I was able to get an RX 580 eGPU (~$200),  1TB NVMe SSD (~$150), and TB3 enclosure (~$350) for roughly the same cost.

2018 Mac Mini Akitio Node Duo 2x Rx 580 Egpu Closeup

2018 Mac Mini + Node Duo + RX 580 + 1TB NVMe SSD

Akitio Node Duo Tested Pcie Expansion Cards

PCIe Expansion Cards

2018 Mac Mini Mantiz Venus Wx 9100 Egpu Gc Alpine Ridge Thunderbolt 3 Monitor Output

Mantiz Venus + WX 9100 eGPU + GC Alpine Ridge

It doesn’t stop there. The four Thunderbolt 3 ports can allow many more upgrades. A Thunderbolt 3 audio interface such as Universal Audio Arrow is an example. If your Mac mini didn’t come with 10GbE port, you can always get a PCIe 10GbE card and achieve the same result. Last but not least is Thunderbolt 3 monitor output for LG UltraFine 5K owners. I tested this theory by using a Gigabyte Alpine-Ridge Thunderbolt 3 add-in card to feed a pair of DisplayPort streams into the AIC then power a 5K monitor through a single Thunderbolt 3 cable.

During the past three months of using the Mac mini, I have paired it with different eGPU configurations. For multiple high-resolution monitor setups, a VisionTek mini eGFX + Radeon WX 4100 is a perfect match. For general purpose use in macOS and gaming in Windows Boot Camp, a Razer Core + RX Vega 56 is the best value setup in my opinion. A Mantiz Venus + WX 9100 would make the best eGPU for a Mac user if money was no issue.

Coined by Steve Jobs when he introduced the first generation Mac mini, BYODKM concept grows longer for the 2018 Mac mini. Bring-your-own sounds fun until you realize you don’t have the missing ingredients, and it’s going to cost you to make it whole. While the computer only needs you to provide a display, keyboard, and mouse, it begs for reenforcement with an external drive and discrete graphics card. People don’t have spare external SSDs and eGPUs lying around wishing for the arrival of a misfit such as this Mac mini.

The original concept worked because the target audience was switchers, who often already had their own display, keyboard, and mouse. Also Apple priced the first Mac mini at around $500 to be competitive with Windows PC counterparts of the time. In 2018 this landscape has shifted tremendously. With an $800 budget, you can build your own small form factor computer with capable specs. AMD Ryzen APU is an excellent choice. Intel NUC is another good platform that provides strong bones for a very portable computer. You may argue they don’t have two Thunderbolt 3 controllers and four ports like the Mac mini. However they may not need that much Thunderbolt 3 capability because they’re flexible enough for internal upgrades. As a proof of concept, I installed a Gigabyte TITAN-RIDGE add-in card to my Ryzen 5 2400G mini-ITX computer. This Thunderbolt 3 controller ignores the fact that the CPU isn’t Intel and works well with TB3 devices. It’s time for Intel to unleash Thunderbolt 3.

2018 Mac Mini Egpu Usb C Ssd Gc Alpine Ridge Aic Thunderbolt 3 Dock

USB-C & Thunderbolt 3 expansion options

Inwin Chopin Ryzen 5 2400g 2018 Mac Mini Nuc7i5

Inwin Chopin Ryzen 5 2400G vs 2018 Mac Mini vs NUC7i5

Closing Thoughts

The Mac mini started life as a switcher Mac. This isn’t the case anymore. You’re no longer buying the Mac mini because it’s the most affordable option. You’re buying it because it’s the most flexible choice for third-party upgrades. Thunderbolt 3 technology is a welcome addition, and this headless Mac is certainly a capable eGPU host. However, the onus is on the consumer to invest the additional time and money needed to make it a complete system. Ultimately Apple’s renovation attempt fell short with a steep price hike.

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There are also stability issues with Bridge OS that lead to random reboot and forced Recovery boot. Overall Mac mini objectively is disappointing, but glad it’s still alive. Anyway, reporting in to let you know that at least as of 10.14.2, the crashes were mostly resolved. Also, the recovery boot issue was actually a “feature” gone wrong. For unbootable partitions or boot devices with errors, the firmware auto-switches to recovery. One much-requested change in this new Mac mini is the RAM slots. We can now replace the RAM modules unlike the soldered RAM in the previous iteration. Unfortunately this is the… Read more »


Great review although I am not sure I feel its entirely fair. The market has changed and the concept of “switchers” is outdated – people will be switching to tablets if anything (as my parents and parents in law have done) so the Mac mini needed a new proposition. There were a lot of other uses for the older models but the thing that really held them back were the CPUs. This revision uses desktop class CPU’s which is a massive improvement IMO, and of course the price has gone up, thats inflation, I still get a little shocked when… Read more »


Posted by: itsage Last but not least is Thunderbolt 3 monitor output for LG UltraFine 5K owners. I tested this theory by using a Gigabyte Alpine-Ridge Thunderbolt 3 add-in card to feed a pair of DisplayPort streams into the AIC then power a 5K monitor through a single Thunderbolt 3 cable. More detail is required to understand that logic. The 5K monitor tested was not the LG? The DisplayPort streams originate from two Thunderbolt 3 ports of the Mac Mini? How does using a Thunderbolt 3 port of the AIC instead of a Thunderbolt 3 port of the Mac Mini… Read more »


Feel free to send me that build to test with my ultrafine  😉  @itsage


Posted by: itsage @joevt3 In my WX 9100 + ALPINE-RIDGE AIC build thread I listed the components used. I didn’t have the LG UltraFine 5K to test (won’t buy one). I used the HP Z27q 5K monitor through a Choetech Thunderbolt 3 to dual DisplayPort adapter to emulate TB3 input. The routing was as followed: WX 9100 eGPU <-> 2x DP Cables <-> GC-ALPINE-RIDGE <-> 1x TB3 to Dual DP Adapter <-> HP Z27q I understand that a Thunderbolt AIC is required to connect a Thunderbolt display to most eGPUs (except the BlackMagic eGPU), but in your review there is… Read more »

“Priced at $799, it’s a whopping 60% price hike over the last generation Mac mini base model. It gets worse with the higher configuration” I certainly dont mind slamming apple as they certainly deserve it sometimes but I’m a little surprised at this assessment. It’s very misleading or maybe simple ignorance. Comparing the two base line mac mini machines is very much apples-oranges. The difference between the 2014 base machine at $499 to the 2018 at $799 is substantial. The low end 2018 mac mini CPU has 125% more processing power than it’s 2014 model (2014 benchmark- 3569, 2018 benchmarks-… Read more »


Posted by: thomasmit I love this site and think it offers a lot of great info but this “review” was phoned in. I’m not saying you have to like the new mac mini or agree with the price increase but to compare them as simply as a “60% hike increase” is very simple thinking. These machines couldn’t be any different and the $300 difference in the two is a substantially more powerful, more portable machine. A better way of assessing the price increase is to say Apple stopped making a cheap desktop and replaced it with something more aimed at… Read more »


I am using a 2018 Mac Mini and a Razer Core with Vega 64 card and I now have the ideal machine for my home/entertainment purposes and am very happy with it. If anything the best value of all of the components was the PC.

Just my two cents.


@itsage To add to your perspective, at least I usually am under the impression that as the years roll by, we should be able to get better performance/product for the same dollar. We are comparing a 2014 Mac Mini to a 2018 model. There would obviously be advancement, but why does that have to bump the cost up that much, if it all? 650$ would have been awesome. I do get that even by today’s standards, the SSD in the new mini is fast, but small. I get that the CPU is way better (but it should be after 4 years),… Read more »


I have no stability issues. The only time I reboot it is when there’s a software update. I have the i7 model and it doesn’t overheat. I’ve endcoded video in handbrake and I run a plex server serving multiple feeds. And 4k.


Great article. What would be the optimal option to use with Mac mini with 3 screens – a 34 ultrawide LG and two HD screens?


Hi, I bought a Mac mini i5 with 256GB ssd and 8GB ram (which I upgraded to 32GB), and am wanting to get an eGPU for it, but due to the limited space on the internal SSD, I’d like to run bootcamp/ Windows on an external SSD if possible, but I’m not sure how to do this – can you help me know how I could achieve this, what are my options and what you would recommend?