ZOTAC plans to demonstrate a prototype of its external GPU enclosure at CES this week. The eGFX chassis from ZOTAC will target notebooks, AIO and SFF PCs with Thunderbolt 3 interface, will integrate a 400 W power supply and provide additional USB ports. The device will hit the market several months from now and its final specifications are still to be determined.

ZOTAC is the sixth company to announce an eGFX enclosure with Thunderbolt 3 interface, so the market of such devices seems to be getting crowded (and we expect several more companies to introduce their eGFX solutions too). Apart from ultra-thin laptops with a TB3 port (and support of eGFX through BIOS and TB3 firmware), the usual target market for this kind of devices, ZOTAC is going to position its external GPU chassis as a solution to upgrade its upcoming SFF ZBOX PCs featuring Thunderbolt 3 interface with high-end external graphics cards.

At present, ZOTAC’s external graphics dock (the company does not have a brand for this product just yet, so it uses a neutral name for now) is still in development, which is why the manufacturer shares only the basic details about this device. Just like competing eGFX boxes, ZOTAC’s chassis will feature one Thunderbolt 3 port (40 Gbps) outside and one PCIe x16 electrical slot inside (operating in PCIe x4 mode, of course). As for power, it will integrate a 400 W PSU in a standard form-factor (it is unclear whether we are dealing with a shortened ATX or an SFX PSU here) that will power the video card inside. As Thunderbolt 3 can transfer up to 100 W of power, the same PSU could also power a notebook or even a miniature PC. The enclosure looks spacy enough for additional fans, but ZOTAC does not say how many of them will be pre-installed in the final product. In any case, a 400 W PSU and an additional cooler are going to provide certain potential for GPU overclocking for those who need it.

ZOTAC eGFX Chassis Preliminary Specifications
Max Video Card Size Double-Wide, 12.2" Long
(312 × 170 × 44 mm)
Max Video Card Power over 300 W
Connectivity 1 × Thunderbolt 3 (~40 Gbps via active cable)
Chassis Size Unknown for now, but enough to accomodate a FLFH graphics card
Internal PSU 400 W (80 Plus Gold?)
Cooling Integrated fans
GPU cooling system
Extras 3 × USB 3.0 ports
1 × USB 3.0 port with Quick Charge
System Requirements Thunderbolt 3 eGFX Certified PC
Thunderbolt 3 w/Active Cable (included)
Windows 10
Compatible Graphics Cads AMD Radeon RX-series and later
NVIDIA GeForce GTX 10-series and later
Shipping Date Q2 2017
Price Unknown

Since many ultra-thin notebooks as well as miniature PCs do not have a lot of spare USB 3.0 ports, ZOTAC’s dock will offer four additional USB 3.0 headers (with one port supporting Quick Charge 3.0). For now, ZOTAC’s dock does not support internal SATA connector for an extra 2.5” storage device (which might be needed to store games, as many PCs do not have capacious SSDs), but remember that the eGFX chassis is still in development.

At CES, ZOTAC plans to demonstrate its external graphics dock in action, therefore, things like electronics and firmware of the product are ready and everything works. The final product may be a little bit different than the one showcased at the trade show, but not radically (it may get LED lighting, grill instead of glass on the side, etc.).

Comparison of Thunderbolt 3 eGFX Chassis
    ASUS ROG XG Station 2 AKiTiO
Devil Box
eGFX Dock
Chassis Dimensions Length 45.6 cm
17.95 in
42.8 cm
16.85 in
40 cm
15.748 in
34 cm
13.38 in
Height 27.8 cm
10.94 in
22.7 cm
8.94 in
24.2 cm
9.52 in
21.84 cm
8.6 in
Width 15.8 cm
6.22 in
14.5 cm
5.71 in
17.2 cm
6.77 in
10.5 cm
4.13 in
Max Dimension of Compatible Graphics Card Length 31.2 cm
12.2 in
over 14 cm
over 5.51"
17 cm
6.7 in
14 cm
5.51 in
15.2 cm
5.98 in
14 cm (?)
5.51 in (?)
Width 4.4 cm
1.73 in
1.96 in
4.4 cm
1.73 in
4.4 cm
1.73 in
Maximum GPU Power 500 W (?) 300 W (?) 375 W 300+ W (?)
PSU Wattage 600 W 400 W 500 W 400 W
Form-Factor internal proprietary SFX internal proprietary internal
Cooling Fans (mm) 3 × 80 120 unknown 3 × 80 present
Connectivity Thunderbolt 1 × TB3 1 × TB3 1 × TB3
Ethernet 1 × GbE - 1 × GbE -
USB 4 × USB 3.0
1 × USB-B
- 4 × USB 3.0 4 × USB 3.0
SATA 1×SATA 6Gb/s - 1×SATA 6Gb/s -
DisplayPort - - -
Availability 1/2017 12/2016 10/2016 4/2016 Q2 2017
Price $? $299 $379 $499 $?

At present, ZOTAC’s eGFX chassis is a work in progress and at least some of its specifications have not been finalized, which is why the company cannot announce its pricing. Right now, the manufacturer targets Q2 as the launch timeframe, so, we will have to wait a little bit for both the final specs and MSPR.

Related Reading:

Source: ZOTAC

Comments Locked


View All Comments

  • Cygni - Wednesday, January 4, 2017 - link

    It's good to see this market finally moving. The AKiTiO is now $210 at a few suppliers online, edging closer to the mass adoption sweet spot. In reality, none of these components should be exceptionally expensive, but the low production amounts and desire to recoup design costs quickly has left the prices high.

    With more and more laptops coming with integrated GPUs, PC gaming seemingly having a a bit of a resurgence, and eGPU support rolling out fast, I could see a real market for these enclosures if they hit the $100-150 range.
  • DanNeely - Wednesday, January 4, 2017 - link

    are you sure you're looking at the right model? I can't find the AKiTiO Node (TB3) for sale anywhere, but found their old TB2 model around that price.
  • Cygni - Thursday, January 5, 2017 - link

    Oh I was just talking about the external graphics market in general, not specifically the TB3 model.
  • sheltem - Wednesday, January 4, 2017 - link

    Geez, some of these TB eGPU enclosures are bigger overall than my RVZ02 (3.43" x 14.96" x 14.57")!
  • shelbystripes - Thursday, January 5, 2017 - link

    I think USB Power Delivery is the "killer app" for this type of enclosure. It has the potential to not just be an external graphics housing, but a fully loaded one-cable-to-connect desktop dock for your laptop. You can plug in your monitor, keyboard, mouse, and peripherals to the enclosure. Then all you need is a single USB Type-C cable to your laptop, no separate PSU brick required. If you're in the target market and shelling out money on a high-end GPU, you probably still want a high-end wired keyboard and mouse, and this lets you have everything you want with one cable. Convenience is worth money to me.

    This of course assumes your laptop supports charging over USB. And that it complies with the USB Power Delivery spec. Sadly some laptops that use USB Type-C for charging (I'm looking at you, HP!) only work with first-party power adapters and won't charge from third-party USB Power Delivery sources, which is bull****.
  • DanaGoyette - Friday, January 6, 2017 - link

    Why do so many of these enclosure manufacturers give you only ONE thunderbolt port? Since there seems to be no such thing as a Thunderbolt hub, any device with only one port will terminate the chain.

Log in

Don't have an account? Sign up now