The Ryzen 5 7640HS is at the heart of the ACEMAGIC AM18 and plays a key role in determining the overall value of this Mini PC.

In this review, we take a close look at the processor inside the ACEMAGIC AM18, covering CPU benchmarks, integrated Radeon 760M performance, DDR5 memory, thermal management, noise levels, and power draw during everyday use and under load.

We also examine the connectivity options, dual 2.5 Gbps LAN, storage and RAM expandability, and the role of the OCuLink interface for hooking up an external GPU. This Zen 4 processor is the core of the platform, while the ACEMAGIC AM18 is the complete system under review: a compact build designed for productivity, multitasking, light gaming, and home lab setups, with the option to add a dedicated GPU later.

At a Glance

1. ACEMAGIC AM18: Hardware Specifications

Specifications from the official product page on acemagic.uk. Accessed August 2026.

2. Ryzen 5 7640HS: Performance and Reference Benchmarks

The Ryzen 5 7640HS is a 6-core / 12-thread mobile processor built on AMD's Zen 4 architecture, manufactured using TSMC's 4 nm process. It has a base clock of 4.3 GHz, a boost clock of up to 5.0 GHz, 16 MB of L3 cache, and a configurable TDP range of 35–54 W (the AM18 is specified at 54 W). Let's see how it performs in reference benchmarks.

Cinebench R23 and Cinebench 2024

Sources: cpu-monkey.com, Notebookcheck. Accessed August 2026.

Geekbench 6 and PassMark

Sources: cpu-monkey.com, PassMark CPU Benchmark Database. Accessed August 2026.

Overall, the Ryzen 5 7640HS delivers competitive single-core performance thanks to the Zen 4 architecture and boost speeds of up to 5.0 GHz, while its 6 cores and 12 threads are sufficient for office productivity, programming, multitasking, and light content editing. The main gap compared to the Ryzen 7 8845HS shows up in multi-core workloads (8 vs. 6 cores) and integrated GPU performance (12 vs. 8 CU), not in single-core responsiveness. 

Comparison: 7640HS vs. 8845HS

If you're considering the AM18, you may wonder how the Ryzen 5 7640HS compares with the Ryzen 7 8845HS. Here are the key differences:

Data from official AMD specifications. Accessed August 2026.

If your primary use case is office work, programming, and light content creation, the 7640HS is more than enough; if you need more cores for multi-threaded workloads or rely on the integrated GPU for gaming, the 8845HS provides a larger performance envelope.

3. Radeon 760M: Gaming Performance

Reference Database (1080p High)

Sources: nanoreview.net, technical.city. Accessed August 2026.

Real-World Performance: Our Tests on the ACEMAGIC AM18

To assess the ACEMAGIC AM18's graphics performance in real-world conditions, we ran tests using the Radeon 760M integrated into the AMD Ryzen 5 7640HS. The results show solid performance in competitive and multiplayer titles, with frame rates reaching up to 95 FPS.

Test configuration: ACEMAGIC AM18 with Ryzen 5 7640HS, 16 GB DDR5 5600 MHz in single-module configuration (not dual channel, as per the product's standard configuration), 512 GB NVMe SSD, Windows 11 with updated AMD Adrenalin drivers. Resolution 1920×1080, default Medium presets, no upscaling (FSR/DLSS disabled), V-Sync off. Sessions of approximately 15 minutes per title, reporting observed average frame rates. Ambient temperature approximately 22–24 °C. Windows power mode: Best Performance. BIOS with manufacturer default settings.

Tested on ACEMAGIC AM18 | Ryzen 5 7640HS | 16 GB DDR5 (single module, not dual channel) | Radeon 760M | Updated AMD Adrenalin drivers.

Results are not directly comparable to third-party databases due to differences in settings, memory configuration, and overall system setup.

Which Games Can You Play?

Based on our tests, the Radeon 760M on the AM18 delivers playable performance in the following titles:

• Competitive, MOBA, and battle royale titles such as Dota 2, CS2, Valorant, League of Legends, and Apex Legends: 60–95 FPS at 1080p Medium.
• Dead by Daylight: 60 FPS at 1080p Medium.

It is not suited for:

• Recent AAA titles at high settings — reference benchmarks (not AM18 tests) for the Radeon 760M at 1080p High report approximately 14 FPS in Cyberpunk 2077 and 19 FPS in The Witcher 3, based on third-party GPU databases.
• Professional 3D rendering or intensive GPU compute without an eGPU.

The Radeon 760M is well suited to competitive games and everyday multimedia workloads, but demanding AAA games will require lower settings or an eGPU. For a broader look at what AMD's integrated graphics can do, see our AMD Radeon Graphics guide. For anyone wanting more, the AM18 offers an expansion path through OCuLink.

4. DDR5 Memory and NVMe Storage

The AM18 ships with 16 GB of DDR5 at 5600 MHz in a single-module configuration. Running in single-channel mode reduces available memory bandwidth, which can significantly affect the performance of the integrated Radeon 760M GPU because it uses system memory as graphics memory. Adding a second identical module enables dual-channel mode, with performance gains that can be significant in games. 

The two SO-DIMM slots support up to 96 GB total. If you're using the AM18 as a home lab with Proxmox and lightweight containers, 16 GB is sufficient; for running multiple virtual machines, we recommend upgrading to 32 GB in a dual-channel configuration.

For storage, the AM18 comes with a preinstalled 512 GB M.2 2280 NVMe PCIe 3.0 SSD. The second M.2 slot supports both PCIe 3.0 and 4.0 NVMe SSDs (not SATA), with expansion up to 4 TB total. The dual-slot design lets you separate your OS and data drives without swapping out the existing unit.

5. Thermals, Noise, and Power Consumption

The AM18's cooling system uses a 70 × 70 × 10 mm fan paired with a copper-fin heatsink and dual heat pipes, designed to maintain stable temperatures and performance under sustained load.

The Ryzen 5 7640HS has a configurable TDP range of 35–54 W per AMD's specifications, while the ACEMAGIC AM18 is specified with a 54 W TDP. The maximum operating temperature (Tjmax) is 100°C. The Type-C power input is rated at 19V/6.32A (120 W), providing enough headroom for the CPU, RAM, SSD, and peripherals.

Based on tests of similar Mini PCs with this Zen 4 processor from other manufacturers, typical platform-level values are:

Reference values from tests on Mini PCs with this processor by third-party manufacturers (GMKtec, PELADN, BOSGAME). These do not represent direct measurements on the ACEMAGIC AM18. Actual thermal and acoustic performance of the AM18 depends on the BIOS, thermal paste, and the specific cooling system design. AMD thermal specifications. Accessed August 2026.

These reference values suggest that Mini PCs using this same processor can maintain reasonable temperatures under sustained load, although actual results vary significantly between models. On the AM18 specifically, thermal management depends on BIOS settings (sustained power limit, STAPM) and the quality of the thermal contact between the CPU and heatsink.

6. OCuLink: External GPU Expansion

If the Radeon 760M falls short in AAA titles, the natural question is: how can you expand the AM18's graphics capabilities? That's where the AM18's OCuLink interface comes in.

OCuLink is a PCIe connector standard that lets you connect an external GPU (eGPU) to the Mini PC. Unlike USB4, which transports multiple protocols (USB, DisplayPort, PCIe) through tunneling, OCuLink provides a direct PCIe link, avoiding some of the protocol overhead associated with PCIe tunneling over USB4.

The AM18 features an OCuLink interface that allows you to connect an external GPU, boosting graphics performance and offering greater flexibility for gaming and more demanding graphics applications.

To take advantage of OCuLink, you'll need:

• A compatible OCuLink dock or adapter.
• An external graphics card (GPU).
• An adequate power supply for the GPU.

Actual performance depends on the external GPU used, the dock, the power supply, and drivers. OCuLink doesn't automatically turn your integrated GPU into a dedicated one: it offers an expansion path for anyone who anticipates growing graphics needs over time.

USB4 vs. OCuLink: Comparison

The AM18 comes with both USB4 and OCuLink. For a detailed breakdown, check out our OCuLink vs. USB4 guide.

USB4 specifications from USB-IF; OCuLink is a PCIe connector standard defined by PCI-SIG. The actual PCIe generation and lane count on the AM18 depend on the manufacturer's implementation. Accessed August 2026.

OCuLink offers a direct PCIe link compared to USB4, with potentially lower protocol overhead for PCIe-specific workloads. However, real-world performance with an eGPU depends on the overall configuration: chosen GPU, dock quality, power delivery, and drivers. USB4 remains more versatile for general peripherals.

7. Dual 2.5 Gbps LAN and Home Lab

Having two 2.5 Gbps Ethernet ports is another standout feature of the AM18. As covered in our guide to the best Mini PCs for home office, this setup opens up several advanced scenarios:

• Software router with pfSense or OPNsense (one port for WAN, one for LAN).
• Personal or small business firewall.
• Virtualization with Proxmox VE and Docker containers.
• Compact NAS for home backup and media services.

Recommended RAM configuration based on use case:

• Proxmox VE with 2–3 lightweight LXC containers: 16 GB DDR5 is sufficient.
• 2 simultaneous Windows VMs: upgrading to 32 GB is recommended.
• Multiple services (NAS + firewall + media server): 32–64 GB provides comfortable headroom.

The dual 2.5 Gbps LAN lets you configure one port as WAN and one as LAN for pfSense or OPNsense, or dedicate each port to a separate network (management and data) for isolation and security. Link aggregation/bonding is technically possible but requires OS, switch, and NIC driver support, and doesn't necessarily double the speed for a single TCP connection. The main value of dual LAN lies in WAN/LAN separation, network virtualization, and firewall configuration.

Before using the AM18 as a software router or firewall, it's important to verify the exact model of the integrated network controller and its compatibility with your chosen OS (pfSense, OPNsense, Proxmox). NIC chipset driver compatibility is often more critical than the port's theoretical speed.

Full Connectivity

The AM18 offers HDMI 2.1, DisplayPort 2.0, and USB4 video outputs, which can support multi-monitor setups for productive workstations; the maximum resolution and number of simultaneous displays depend on the connected monitors, connection type, and system configuration.

8. ACEMAGIC AM18: Key Strengths

9. ACEMAGIC AM18: Who Is It For?

ACEMAGIC AM18 — AMD Ryzen 5 7640HS Mini PC

Ryzen 5 7640HS RDNA 3 Graphics High-Speed Memory External GPU Support High-Speed NetworkingVersatile Connectivity

A bold cyberpunk-inspired exterior meets powerful performance, bringing a futuristic edge to your desktop while delivering the speed and flexibility you need for work, gaming and creative projects.

Shop on acemagic.uk — from £399

Frequently Asked Questions

What is OCuLink and what does it do?

OCuLink is a PCIe connector standard that allows you to connect an external GPU (eGPU) to the Mini PC. Unlike USB4, which transports multiple protocols through tunneling, OCuLink provides a direct PCIe link, avoiding some of the protocol overhead associated with PCIe tunneling over USB4. The actual PCIe generation and lane count depend on the manufacturer's implementation. Real-world eGPU performance depends on the external GPU used, the dock, the power supply, and drivers.

Is the ACEMAGIC AM18 expandable?

Yes. The AM18 combines a 6-core Ryzen 5 7640HS processor, DDR5 RAM expandable up to 96 GB, dual NVMe slots for storage up to 4 TB, and an OCuLink port for connecting an external GPU.

How much RAM does the AM18 support?

The AM18 supports up to 96 GB of DDR5 memory at 5600 MHz via two SO-DIMM slots. The standard configuration is 16 GB in a single module (not dual channel). Adding a second identical module enables dual-channel mode, with direct benefits for the integrated Radeon 760M GPU, which is particularly sensitive to memory bandwidth. For multiple virtual machines or video editing, we recommend upgrading to 32 GB in a dual-channel configuration.

Can you game on the Radeon 760M?

Yes. In our tests on the AM18, the Radeon 760M reached 95 FPS in Dota 2, 80 FPS in Counter-Strike 2, and 60 FPS in Apex Legends at 1080p Medium. For more demanding titles like Cyberpunk 2077 and The Witcher 3 at 1080p High, third-party GPU reference databases report approximately 14 FPS and 19 FPS respectively for the Radeon 760M — these are not direct AM18 measurements. For higher performance, the AM18 features an OCuLink port for connecting an eGPU.

Is the AM18 suitable for a home lab?

Yes. The dual 2.5 Gbps LAN ports allow configurations such as software routers with pfSense or OPNsense, Docker services, and virtualization with Proxmox VE. With 16 GB of RAM, you can run lightweight containers; for more demanding workloads, we recommend upgrading to 32 GB.

Is OCuLink better than USB4 for an external GPU?

It depends on your use case. USB4 is a general-purpose connection that transports multiple protocols (USB, DisplayPort, PCIe) through tunneling and is partially compatible with Thunderbolt. OCuLink provides a direct PCIe link, avoiding some of the protocol overhead associated with PCIe tunneling over USB4, and is optimised for external GPU configurations. The PCIe generation and lane count of OCuLink depend on the manufacturer's implementation. Real-world performance still depends on the GPU, dock, and drivers used.

What's the difference between Ryzen 5 7640HS and Ryzen 7 8845HS?

Both use Zen 4 architecture and are specified within a 35–54 W configurable TDP range, although actual power consumption and performance depend on the system configuration. The performance differences are significant: the 8845HS offers 8 cores / 16 threads versus the 7640HS's 6 / 12 (greater multi-core capacity), and an integrated Radeon 780M with 12 CU versus the 760M's 8 CU (greater graphics capacity). Despite the same nominal TDP range, the gap can be noticeable in multi-core and graphics-intensive workloads. For most Mini PC workloads, the 7640HS is sufficient; the 8845HS makes sense for heavy multi-threaded workloads or greater graphics needs.

What's the power consumption of the AM18?

The AM18 has a Type-C power input rated at 19V/6.32A (120 W). Since no direct measurements were taken on the AM18 itself, reference values for this Zen 4 platform indicate an idle power draw of approximately 10–15 W and 45–65 W under maximum load. Actual values depend on BIOS settings, workload, and connected peripherals.

Is the ACEMAGIC AM18 suitable for video editing?

The AM18 can handle everyday photo and video editing workloads, while more demanding 4K projects may benefit from an external GPU connected through OCuLink. The Radeon 760M includes multimedia acceleration with AV1 decode support per AMD's specifications.

References

• AMD, AMD Ryzen 5 7640HS Processor Specifications. Accessed August 2026. amd.com.
• CPU-Monkey, AMD Ryzen 5 7640HS Benchmarks. Accessed August 2026. cpu-monkey.com.
• Notebookcheck, AMD Ryzen 5 7640HS Benchmarks and Specs. Accessed August 2026. notebookcheck.net.
• PassMark Software, AMD Ryzen 5 7640HS Benchmark. Accessed August 2026. cpubenchmark.net.
• Nanoreview.net, Radeon 780M vs Radeon 760M. Accessed August 2026. nanoreview.net.
• Technical.city, Radeon 760M vs Radeon 780M. Accessed August 2026. technical.city.
• USB-IF, USB4 Specification. Accessed August 2026. usb4.org.
• Proxmox Server Solutions GmbH, Proxmox Virtual Environment Documentation. Accessed August 2026. proxmox.com.