Gaming systems and small form-factor (SFF) PCs have turned out to be growth segments in a desktop PC market that has been subject to severe challenges recently. Many vendors have tried to combine the two, but space constraints and power concerns have ended up as performance-limiting factors. Zotac, in particular, has been very active in this space with their ZBOX MAGNUS series. Starting with the ZBOX MAGNUS EN980 (Intel Core i5-6400 / GTX 980), they have been on a regular release cadence - in mid-2016, we saw the EN1080 with an updated Pascal GPU, and the CPU upgrade to Kaby Lake in the EN1080K came to market in Q3 2017. All these systems carried a hefty price tag befitting a boutique vendor. However, the performance of the systems with their excellent liquid-cooling solution did justify the pricing.

In order to expand the appeal of the ZBOX MAGNUS series, Zotac has now started experimenting with fully air-cooled systems in the same form-factor. The ZBOX MAGNUS EK71080 that we are looking at today is a Kaby Lake system using a Core i7-7700HQ processor along with a discrete NVIDIA GTX 1080 card. It is the flagship fully air-cooled configuration in the Kaby Lake generation. It looks likely that Zotac will be adopting this cooling strategy for the flagship ZBOX MAGNUS models in the future also. In terms of internals, after discounting the thermal solution, the only major difference compared to the ZBOX MAGNUS EN1080K that we reviewed earlier is the replacement of the Core i7-7700 with a Core i7-7700HQ processor. The pricing is also much lower - there is a difference of $400 between the MSRPs of the EK71080 and the EN1080K. While the performance of the CPU-limited workloads is expected to lag a bit, GPU-limited workloads and gaming should not see much of an impact. There are a number of other tradeoffs (some good, some disappointing) that we will be looking at throughout this review.

Introduction

The Zotac ZBOX MAGNUS EK71080 claims to be a powerful VR-ready gaming mini-PC that is equipped with a powerful notebook processor and a high-end discrete GPU. In terms of physical footprint, the EK71080 is similar to that of the EN1080K (5.85L / 225 mm x 203 mm x 128 mm). Unlike the impressively quiet liquid cooling system in the EN1080K / EN1080 / EN980, the EK71080 relies on a number of fans spread throughout the chassis. On the external front, the orientation of the ports in the rear panel is different - the four USB 3.0 Type-A ports are all aligned horizontally (they were stacked vertically in the EN1080K). The EN1080K / EN1080 / EN980 all use a MXM card, and the display outputs are routed through the mainboard. Those systems also have a front HDMI port and fancy RGB lighting for the chassis (controlled using the Spectra utility). This is not the case with the EK71080. The video outputs are from a discrete card, and the front HDMI port is not available. The chassis doesn't have the RGB lighting feature either.

One of the advantages of going with a lower TDP CPU (the 45W Core i7-7700HQ instead of the 65W Core i7-7700) is that the PC requires only a single power brick - a 330W (19.5V @ 16.9A) DC power supply. In addition to the main unit and the adapter, the package also includes a US power cord and WLAN antennae. A quick start guide with installation instructions for the memory and disk drives, a user manual and a read-only USB key with the drivers round up the rest of the package. It must be noted that the EK71080, like the EN1080K, is Intel Optane-ready. As we shall see further down in this section, the underside of the board has a second M.2 PCIe 3.0 x4 that specifically supports Optane drives. With Intel RST, an Optane drive can be used as a caching drive for either the main M.2 SSD or the disk installed in the 2.5" slot.

We received the barebones version of the ZBOX MAGNUS EK71080 from Zotac. In order to complete the build, we used the same components that were used in our EN1080K review - two 16GB Corsair Vengeance DDR4 SODIMMs and a 512GB Toshiba OCZ RD400 M.2 2280 PCIe 3.0 x4 NVMe SSD. The Corsair SODIMMs can operate at up to 2667 MHz, and we were able to get that speed in the EK71080 (compared to the 2400 MHz and 2133 MHz for the same SODIMMs in the EN1080K and the EN1080 respectively). The Toshiba OCZ RD400 operates with the full PCIe 3.0 x4 bandwidth. Note that OCZ's custom NVMe driver is needed to obtain the best performance out of the SSD.

The specifications of our review configuration are summarized in the table below.

Zotac ZBOX MAGNUS EK71080* Specifications
Processor Intel Core i7-7700HQ
Kaby Lake-H, 4C/8T, 2.8 GHz (Turbo to 3.8 GHz), 14nm+, 6MB L2, 45W TDP
Memory Corsair Vengeance CMSX32GX4M2A2666C18 DDR4
18-18-18-36 @ 2400 MHz
2x16 GB
Graphics NVIDIA GeForce GTX 1080 (8GB GDDR5x)
Disk Drive(s) Toshiba OCZ RD400
(512 GB; M.2 Type 2280 PCIe 3.0 x4 NVMe; Toshiba 15nm; MLC)
Networking Intel Dual Band Wireless-AC 3165
(1x1 802.11ac - 433 Mbps)
1x Intel I219-LM Gigabit LAN1x Realtek RTL8168 Gigabit LAN
Audio 3.5mm Headphone Jack
Capable of 5.1/7.1 digital output with HD audio bitstreaming (HDMI)
Miscellaneous I/O Ports 4x USB 3.0
2x USB 3.1 Gen 2 (1x Type-A + 1x Type-C)
1x SDXC Card Slot
Operating System Retail unit is barebones, but we installed Windows 10 Enterprise x64
Pricing (As configured) $1500 (barebones) / $2217 (as configured)
Full Specifications Zotac ZBOX MAGNUS EK71080 Specifications

Internally, the EK71080 uses the Kaby Lake-H Sunrise Point HM175 chipset. As a comparison point, the EN1080 and EN1080K use the B150 desktop chipset. However, given the configurable options (only the DRAM and SSD / HDDs are left to the end user to complete the hardware configuration), the choice of chipset really doesn't matter. The PCIe lanes off the HM175 chipset are utilized as below:

  • PCI-E 3.0 x2 port #5 In Use @ x2 (ASMedia ASM2142 USB 3.1 xHCI Controller)
  • PCI-E 3.0 x1 port #7 In Use @ x1 (Intel Dual Band Wireless-AC 3165 AC HMC WiFi Adapter)
  • PCI-E 3.0 x4 port #9 In Use @ x4 (OCZ NVMe SSD Controller)
  • PCI-E 3.0 x1 port #16 In Use @ x1 (Realtek RTL8168/8111 PCI-E Gigabit Ethernet Adapter)

In addition to the above, we also have the PCIe lanes corresponding to the Optane slot.

The use of the HM175 chipset allows Zotac to offer the Intel I219-LM gigabit ethernet controller for one of the LAN ports. The second LAN port is still enabled by the Realtek RTL8168 (similar to the other ZBOX MAGNUS PCs we have looked at before). The other nice upgrade in the EK71080 is the USB 3.1 controller. The new ZBOX uses the updated ASMedia ASM2142 controller (compared to the ASM1142 used in the EN1080K and earlier PCs). The other components such as the audio codec (Realtek ALC892), Wi-Fi (Intel AC3165), and the SDXC card reader (Realtek-based USB 2.0 bridge) are the same between the EK71080 and the EN1080K.

The gallery below shows some photographs of the chassis and the internals of the system. It also includes a breakdown of the thermal design from Zotac's product page. Even though the photo only shows two radial fans, the chassis itself has another fan on the side, and the underside has a small fan to aid in cooling any installed M.2 SSD.

Our evaluation was done with the launch BIOS ( Version 2K170911 ), which, unfortunately, doesn't have the latest Kaby Lake microcode from Intel for patching the recent security vulnerabilities. However, we used Windows 10 Enterprise x64 Build 16299.334 for our benchmarking. It integrates the software fixes for the vulnerabilities. Essentially, our benchmark results correspond to a patched OS-only configuration. The various options available in the BIOS are covered in the gallery below.

While we do have the option to enable SGX support, there are no control knbos for the integrated GPU in the Core i7-7700HQ. The integrated GPU is better at decoding videos encoded in codecs such as VP9 Profile 2 compared to the GTX 1080. It can offer the PAVP (protected audio video path) for certain DRM requirements that is also not present in the GTX 1080. Unfortunately, the integrated GPU is completely disabled in the EK71080 (this is no different from the previous ZBOX MAGNUS PCs, though).

In the table below, we have an overview of the various systems that we are comparing the Zotac ZBOX MAGNUS EN1080K against. Note that they may not belong to the same market segment. The relevant configuration details of the machines are provided so that readers have an understanding of why some benchmark numbers are skewed for or against the Zotac ZBOX MAGNUS EN1080K when we come to those sections. Note that we are using a new updated benchmark suite, and the number of benchmarks with comparison points is limited.

Comparative PC Configurations
Aspect Zotac ZBOX MAGNUS EK71080*
CPU Intel Core i7-7700HQ Intel Core i7-7700HQ
GPU NVIDIA GeForce GTX 1080 (8 GB) NVIDIA GeForce GTX 1080 (8 GB)
RAM Corsair Vengeance CMSX32GX4M2A2666C18 DDR4
18-18-18-36 @ 2400 MHz
2x16 GB
Corsair Vengeance CMSX32GX4M2A2666C18 DDR4
18-18-18-36 @ 2400 MHz
2x16 GB
Storage Toshiba OCZ RD400
(512 GB; M.2 Type 2280 PCIe 3.0 x4 NVMe; Toshiba 15nm; MLC)
Toshiba OCZ RD400
(512 GB; M.2 Type 2280 PCIe 3.0 x4 NVMe; Toshiba 15nm; MLC)
Wi-Fi Intel Dual Band Wireless-AC 3165
(1x1 802.11ac - 433 Mbps)
Intel Dual Band Wireless-AC 3165
(1x1 802.11ac - 433 Mbps)
Price (in USD, when built) $1500 (barebones)
$2217 (as configured, No OS)
$1500 (barebones)
$2217 (as configured, No OS)
Performance Metrics - I
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  • spuwho - Friday, April 20, 2018 - link

    You have to keep Zotac's in a place where the air flows freely or they live a hot, short life.
  • Scottcouse - Friday, April 27, 2018 - link

    The article is written in an interesting way. It discusses about Zotac ZBOX MAGNUS EK71080 compact gaming PC review. The article mentions that Gaming systems and small form-factor (SFF) PCs have developed into development sections in a desktop PC market. Gaming has become an important activity and therefore, the Gaming systems are in huge demand. Get through the article so that you can get plenty of knowledge.

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    I really want a ZBOX with one of AMD's new Zen APUs. I think they demonstrated one 6 months ago or something but it isn't available yet. Yes, here it is, ZBOX MA551 with a 2200G or 2400G - https://www.anandtech.com/show/12319/zotac-display...
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