You are comparing two compact gaming desktops with similar street prices, but very different upgrade paths. This page shows you exactly where the FIREBAT A6 and GMKtec M6 Ultra split, so you can pick the one that fits your workload without hitting a hardware wall later.
In short: The GMKtec M6 Ultra wins for most buyers because it has user-upgradeable RAM slots, USB4 connectivity, and a newer Radeon 760M graphics core. The FIREBAT A6 only beats it if you need its extra CPU cores for heavy multithreaded work and you will never add more than 16GB of memory.
Quick picks
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Lets you double the GMKtec M6 Ultra's memory to 32GB when your games or apps start running slow.
Adds passive aluminum cooling under the mini PC to keep fan speeds and noise lower during long gaming sessions.
The differences at a glance
Both machines ship with 16GB of memory, 512GB of storage, and dual 2.5G LAN ports. The critical split starts with the processor, the GPU, and how the RAM is built into the board. One machine can grow; the other cannot. We cover pitting these mini pcs against each other in a guide of its own.
| Feature | FIREBAT A6 | GMKtec M6 Ultra |
|---|---|---|
| CPU | Ryzen 7 7735HS (Zen 3+, 8C/16T) | Ryzen 5 7640HS (Zen 4, 6C/12T) |
| GPU | Radeon 680M | Radeon 760M |
| RAM | 16GB LPDDR5 (soldered, fixed) | 16GB DDR5 (2x8GB, expandable to 128GB) |
| USB4 | No | Yes (40Gbps, 8K@60Hz) |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 6E |
Keep that table in mind. Every section below drills into one of these rows to explain why it matters on your desk.
Pro tip: If you plan to run more than four virtual machines, the FIREBAT's extra cores may matter. Otherwise, the GMKtec's snappier single-core speed will feel faster in most apps.
CPU speed: why the Ryzen 5 outpaces the Ryzen 7
The FIREBAT A6 packs an 8-core Ryzen 7 7735HS. It is a solid chip for running many background tasks at once. The GMKtec M6 Ultra uses a 6-core Ryzen 5 7640HS, which is built on a newer architecture and clocks higher.
For single-threaded tasks, the GMKtec is faster. This includes loading game levels, opening heavy spreadsheets, and general system responsiveness. The newer Zen 4 core design and 5.0GHz clock speed give it an edge in the tasks you do every day.
For multithreaded work, the FIREBAT pulls ahead. If you are running a handful of virtual machines or doing video encoding where all 8 cores can work in parallel, the extra cores help. But for a typical home user, the speed difference in day-to-day use favors the GMKtec.
- Winner for single-core speed: GMKtec M6 Ultra
- Winner for heavy multi-core rendering: FIREBAT A6
Pro tip: Check the maker's current spec sheet for exact clock speeds, as thermal limits can vary by batch. There is more on selecting a compact work machine in a separate guide.
Gaming performance: the Radeon 760M plays better
Both built-in graphics cards can run esports titles like Fortnite and Valorant at 1080p on medium settings. The difference comes from the GPU generation. The GMKtec uses the newer Radeon 760M, which supports AV1 video encoding and runs at a higher clock speed.
According to the published specs, the 760M is noticeably quicker than the older Radeon 680M in the FIREBAT. It handles more frames per second in many games and uses less power while doing it. This also means the GMKtec handles video editing and streaming better out of the box.
The FIREBAT’s 12 compute units give it a slight theoretical advantage in raw parallel processing, but the 760M’s newer architecture makes it the better daily driver for gaming. If you are buying this PC primarily to play games, the GMKtec is the safer choice.
- Winner for gaming and media tasks: GMKtec M6 Ultra
Pro tip: To get the most from the GMKtec's USB4 port for gaming, use a cable and drive that are rated for 40Gbps.
RAM upgradeability: the single biggest deciding factor
This is where the two machines split for good. The FIREBAT A6 has its 16GB of memory soldered directly to the motherboard. There are no slots, and you cannot add more. The GMKtec M6 Ultra has two open slots and ships with two 8GB sticks.
That means you can swap the GMKtec’s RAM for 32GB, 64GB, or even 128GB if your needs grow. The FIREBAT is locked at 16GB forever. For most people, 16GB is enough today, but game requirements are climbing. In three to four years, you will likely want 32GB to keep the machine fast. It helps to understand firebat a6 over gmktec m6 before going further.
Buying the GMKtec M6 Ultra gives you a hardware upgrade path that lasts years longer. Buying the FIREBAT A6 means you are stuck with the maximum memory it will ever have.
- Winner for long-term flexibility: GMKtec M6 Ultra
- FIREBAT A6 only wins if you know you will never need more than 16GB of RAM.
This 32GB kit is the natural next step for the GMKtec M6 Ultra when your games or apps start running out of 16GB.
- Boosts System Performance: 32GB DDR5 RAM laptop memory kit (2x16GB) that operates at
- Accelerated gaming performance: Every millisecond gained in fast-paced gameplay
Connectivity: USB4 and Wi-Fi 6E give the GMKtec an edge
Both units have HDMI, DisplayPort, and two 2.5G LAN ports. The difference is the high-speed connection. The GMKtec M6 Ultra includes a USB4 port that can carry data at 40Gbps and display video at 8K resolution. The FIREBAT A6 has a standard USB-C port limited to 10Gbps and 4K resolution.
USB4 matters if you plan to connect a fast external SSD, a high-resolution monitor, or an external graphics card in the future. It is the port that keeps the GMKtec useful as your desktop needs grow.
The GMKtec also has Wi-Fi 6E. This uses the less crowded 6GHz band, which can mean faster speeds and fewer dropped frames in online games. The FIREBAT has standard Wi-Fi 6, which is fine, but the 6E capability is a small but real advantage.
- Winner for future-proof connections: GMKtec M6 Ultra
Heat and noise: the FIREBAT stays quieter
Heat is the one area where the FIREBAT A6 has a clear advantage. It is locked to a 45-watt power limit, with a brief 54-watt boost. The GMKtec M6 Ultra can be set to run between 45 and 60 watts in its BIOS, and its Ryzen 5 chip clocks higher.
That means the GMKtec M6 Ultra will run warmer under sustained load, and its fan will spin up more often. It is not loud, but you will hear it work when gaming or rendering. The FIREBAT’s cooler, quieter operation makes it a better fit for a bedroom desk or a quiet office. The other half of this decision is firebat a6 gmktec m5.
If you want a silent machine that sits on a small desk, the FIREBAT is the easier choice. If you are willing to accept a little fan noise for more power and newer features, the GMKtec is the better fit.
- Winner for quiet operation: FIREBAT A6
This aluminum stand fits under either mini PC and helps pull heat away from the bottom vents, keeping the fan from spinning up as often.
- 🔥 Flexible Dual-Mode Cooling System – Choose between passive cooling (aerospace-grade
- 💎 Premium Aluminum Construction - Anodized surface resists scratches and corrosion
Which one should you buy?
For most people, the answer is the GMKtec M6 Ultra. It gives you a newer CPU, a faster GPU, USB4, Wi-Fi 6E, and—most importantly—a chance to add more RAM later. It is the more flexible machine for a desk that will be in use for several years.
Buy the FIREBAT A6 only if two things are true: you need the extra CPU cores for heavy background work, and you know for certain you will never need more than 16GB of RAM. That is a narrow window.
- For gamers and home users: GMKtec M6 Ultra, because of the faster GPU and upgradeable RAM.
- For students on a tight desk: GMKtec M6 Ultra, because the better connectivity and future upgradability matter more than two extra CPU cores.
- For quiet server or NAS use: FIREBAT A6, if you know your memory needs will never exceed 16GB and you value silence.
- For tinkerers who want to add an eGPU later: GMKtec M6 Ultra, because of the USB4 port.
The bottom line
The GMKtec M6 Ultra is the better buy for the majority of people because of its upgradeable RAM, USB4 port, and faster built-in graphics. Choose the FIREBAT A6 only if you are certain you will never add more than 16GB of memory and you need the extra CPU cores for heavy multithreaded work today.
Frequently asked questions
Can I add more RAM to the FIREBAT A6?
No. The 16GB of LPDDR5 memory is soldered directly to the motherboard. There are no RAM slots, and the maximum amount of memory the FIREBAT A6 will ever have is 16GB. The GMKtec M6 Ultra, by contrast, has two open slots and can be upgraded to much higher memory capacities.
Is the GMKtec M6 Ultra louder than the FIREBAT A6?
Yes, it is a little louder under heavy load. The GMKtec’s chip can be set to run at a higher power level, which generates more heat and makes the fan spin faster. The FIREBAT A6 is locked to a lower power limit and runs quieter on average.
Which one handles 1080p gaming better?
The GMKtec M6 Ultra. Its Radeon 760M graphics core is built on a newer architecture and runs at a higher clock speed than the FIREBAT’s Radeon 680M. You will get more frames per second and better power efficiency in most games at 1080p.
Do both machines support external GPUs?
Only the GMKtec M6 Ultra does, and only through an eGPU that connects to its USB4 port. The FIREBAT A6’s USB-C port does not carry the data speeds or video signals needed for an external GPU.