10 Best External Gpu Enclosure of September 2025

• Desktop-grade performance: Boosts Thunderbolt 3 laptop performance with support for up to 3 slot-wide PCIe full-sized desktop graphics cards (sold separately)
• Built-in power supply: Includes a 700W ATX PSU with 100W laptop charging via Thunderbolt 3; GPU max power support up to 500W
• Compatibility (Windows): Requires Thunderbolt 3 external graphics (eGFX) support with RS45 or later and compatible NVIDIA or AMD graphics cards. Razer synapse 3 software not available on macOS
• Compatibility (macOS): Requires Thunderbolt 3 and High Sierra 10.13.4 or later and compatible AMD graphics cards only (NVIDIA cards not supported)
• GPU max power support: 375 watts

Razer

• Amplify your performance Step up your graphics performance with support for a full length, double wide, desktop graphics card that do not exceed 10.5 inches in length
• Designed for Alienware 13 R2, 15 R2, 15 R3, Alpha R2, M17xR2, M17xR3, X51 R3, R2 notebooks LCD or on any external display connected to the amplifier
• Includes a 460 Watts internal power supply, GPU is not included, peripherals dock to the amplifer with 4 built in USB 3.0 ports
• Plug in with a single proprietary cable, included in box, exclusively made for Alienware R2 laptops, it is a system bus extender, has stealth black color
• Compatibility for available GPUs compared to TBT3 options and offer support for a single full length, dual wide, PCI Express x16 graphics card, support graphic cards of up to 375W and NVIDIA GeForce GTX 600 as well as AMD Radeon HD 5000 series and newer
• Note: Kindly refer User Guide before use

Alienware

• Connects High Performance GPU cards (up to 312mm x 160mm) to computers with a Thunderbolt 3 port. Also supports AVID HDX, Red Rocket-X and other x16 full-length PCIe cards (must have a Thunderbolt 3 connection, USB3C connection and Thunderbolt 2 adapters do not work)
• 550W power supply supports up to 375W card (up to 8-pin + 8-pin power connectors), and provides up to 87W of Power Delivery to charge a laptop.
• Breakaway Box 550 has one Thunderbolt 3 port, includes a 0.5m 40Gb Thunderbolt 3 cable
• Mac: Supports AMD RX 470,480,570,580/Vega 56 on Thunderbolt 3 Macs with macOS High Sierra (Boot Camp not supported). macOS supports two Breakaway Boxes.
• Windows: Supports NVIDIA GTX 1060,1070,1080,1080ti/Titan X, Xp,V/Quadro P4000,P5000,P6000 or AMD Radeon RX 570,580/Vega 56/WX 5100,7100 on Thunderbolt 3 computers with Windows 10.

Sonnet Technologies

• Thunderbolt 3 40GB/s Ports/daisy chain support for up to 6 devices
• Dual ultra-quiet, High-efficiency cooling fans
• Easily install nearly any Full-height/full-length PCIe 3.0 card (storage I/O, networking, video, sound)
• Versatile storage & connectivity expansion; NVMe RAID drives, USB/eSATA/Mini-SAS connectivity

High Point

• Expand your connectivity: Add an external PCIe (PCI Express 3.0) x16 slot and a DisplayPort connection to your Thunderbolt 3 equipped MacBook or laptop with this Thunderbolt 3 PCIe expansion chassis.
• High speeds: Experience increased productivity with Thunderbolt 3 and up to 40Gbps bandwidth which is twice the speed of Thunderbolt 2 (20Gbps) and eight times faster than USB 3.0 (5Gbps).
• Broad compatibility: For ultimate convenience, this Thunderbolt 3 external PCIe enclosure works with both your Mac and Windows computers so you’re not limited to what systems you can use with the expansion box.
• Displayport connection: This Thunderbolt 3 PCIe expansion slot supports one 4K DisplayPort monitor, and a second extended monitor display through the Thunderbolt 3 (USB-C) port.
• Reliable support: Backed by a StarTech.com 2-year warranty, this Thunderbolt 3 PCIe expansion chassis has free lifetime technical support.

StarTech

• External Graphics for high-performance gaming
• Ultra fast 40Gbps Thunderbolt3 interface
• Pci Express x16 slot supports high Performance Graphics cards
• Thunderbolt3 USB-C port supports USB Power Delivery for charging compatible laptops up to 87W

PowerColor

• Brand new and authentic HP products ship from and are sold by Amazon.com (check above).
• Add the graphics card of your choice: Give a desktop-level boost to your laptop’s gaming potential.
• Thunderbolt 3-certified USB-C connectivity: Delivers gaming power and charges your USB-C laptop from just one port.
• Room for a hard drive or solid-state drive: Increase storage for your games without eating up valuable space on your laptop.
• Easy to upgrade for the future: Keep your gaming performance at peak condition without buying a new PC.
• Large, easy-access door: Provides seamless access to the graphics card slot, 2.5-inch drive bay, and replaceable power supply.
• Compatibility: Works with Windows-based PCs with Thunderbolt 3 port.

HP

• Connects a PCIe Expansion Card to Computers Without Slots—Use high-performance PCIe cards with any Mac or Windows PC with a Thunderbolt 3 port
• One PCIe 3.0 x8 Slot—Supports one half-length+ (up to 7.75 inches long), full-height, single-width PCIe card (plus one daughter card)
• 40Gbps Thunderbolt 3 Interface—Offers 2750 MB/s of PCIe bandwidth, doubling the performance of Thunderbolt 2;Energy Saver Mode
• Full Performance In a Small and Light Design—Takes up little space on the desktop, but large enough to support nearly every Thunderbolt-compatible PCIe card, at full performance
• Two Thunderbolt 3 (USB-C) Ports—One port reserved for connection to the computer; second port supports daisy-chaining of up to five additional Thunderbolt devices to your computer, attaching a single USB peripheral device, or connecting up to two 4K displays or one 5K display

Sonnet Technologies

• All-new Aluminum Chassis for beauty and function designed by ASUS and In Win
• AURA Sync ready with the ASUS XG Station Pro's plasma tube
• 330W internal power supply delivers support for your graphics card and laptop/tablet
• Superior Cooling with dual 120mm exhaust fans with features 0db fan technology for silent performance at low temperatures
• Save desk space and reduce heat with a design that uses an external adapter
• All-new aluminum chassis holds full-length 2.7-slot graphics cards
• Compatible with NVIDIA GeForce GTX 900 series, GTX 10 series, RTX 2070, RTX 2080, and AMD Radeon RX580, RX570, and Radeon Pro WX7100 and is mac OS certified with AMD Radeon RX580/RX570 and Radeon Pro WX7100 high sierra 10.13.4 and later

ASUS

• 0 GB Dual bay USB 3.1 Gen 1 and eSATA equipped performance RAID enclosure
• Hardware RAID 0, 1, span, and independent modes
• Fast USB 3.1 Gen 1 & eSATA connectivity-Accelerate your workflow with transfer speeds up to 407MB/s
• Supports 2 x SATA HDDs. All Cables included
• 1 Year OWC Limited Warranty

OWC