Introduction: Why This Comparison Matters
If you're shopping for a new Android TV box in 2026, you've likely come across two confusingly similar chip names: the S905X4 and the S905X5M. Both are made by Amlogic, both support 4K streaming, and both are often found in budget-to-mid-range IPTV boxes. But they are not the same processor—and choosing the wrong one could leave you with a device that underperforms for years.
This guide breaks down the S905X4 vs S905X5M comparison in detail, so you can make an informed decision for your IPTV setup.
📊 Quick Summary
- S905X4: Older chip (2021), 12nm, ARMv8, no NPU, no H.266 support
- S905X5M: Newer chip (2024+), 6nm, ARMv8, higher clock speed, still no NPU or H.266
- Important: Neither chip is the "full" S905X5 (which has ARMv9 and an NPU)
Specification Comparison: S905X4 vs S905X5M
Here's the full technical breakdown of both processors:
| Feature | S905X4 | S905X5M |
|---|---|---|
| CPU Architecture | ARMv8.2 (Cortex-A55) | ARMv8 (Cortex-A55) |
| CPU Cores | Quad-core | Quad-core |
| Max CPU Clock | 2.0 GHz | 2.5 GHz |
| Manufacturing Process | 12nm | 6nm |
| GPU | Mali-G31 MP2 | Mali-G310 V2 |
| NPU (AI Accelerator) | No | No |
| Max RAM | 4 GB | 4 GB |
| Video Decode | 4K@60fps (AV1, H.265) | 4K@60fps (AV1, H.265) |
| H.266 Support | No | No |
| HDMI | HDMI 2.1 | HDMI 2.1 |
Key Differences Explained
1. Manufacturing Process: 12nm vs 6nm
The biggest difference between the two chips is the manufacturing process. The S905X4 uses an older 12nm process, while the S905X5M uses a newer 6nm process. This means:
- S905X5M runs cooler — less heat generated under load
- S905X5M consumes less power — better energy efficiency
- S905X5M is more stable during long streaming sessions
2. CPU Clock Speed: 2.0 GHz vs 2.5 GHz
The S905X5M has a higher maximum clock speed (2.5 GHz vs 2.0 GHz on the S905X4). This provides a modest performance boost—about 15-20% faster in single-threaded tasks. For IPTV navigation and app loading, the difference is noticeable but not dramatic.
3. GPU: Mali-G31 MP2 vs Mali-G310 V2
The S905X5M features a newer generation GPU (Mali-G310 V2) compared to the S905X4's Mali-G31 MP2. This translates to smoother UI animations and better performance in graphics-heavy apps. However, for pure IPTV playback, both GPUs are sufficient.
4. Video Decoding: Nearly Identical
Both chips support 4K@60fps decoding with AV1 and H.265 (HEVC) codecs. Neither supports H.266 (VVC) or native 8K decoding. So for IPTV streaming, video quality will be essentially the same on both.
💡 What's Missing? Neither the S905X4 nor the S905X5M includes an NPU (Neural Processing Unit). This means neither chip supports AI Super Resolution (AI-SR). If you want AI upscaling for sharper 1080p IPTV streams, you need the full S905X5 (ARMv9) — not the S905X5M.
Real-World IPTV Performance
For IPTV streaming specifically, here's how the two chips compare:
Streaming Quality
Tie: Both handle 4K@60fps streams smoothly with AV1 and H.265 codecs.
Channel Switching
S905X5M: Slightly faster due to higher clock speed and newer GPU.
Heat & Stability
S905X5M: Runs cooler thanks to 6nm process, making it more reliable for long sessions.
AI Upscaling
Tie: Neither chip supports AI Super Resolution.
8K Support
Tie: Neither chip supports true 8K decoding.
Price
S905X4: Typically cheaper due to being older tech.
Which Devices Use These Chips?
Devices with S905X4
- Ugoos X4 series
- Mecool KM2 Plus
- Tanix TX4
- Older Fire TV Cube generations
Devices with S905X5M
- Mecool MEon1 4K Google TV Box
- Strong Leap Nova
- Ugoos X5M Pro
- Newer budget IPTV boxes (2025-2026)
S905X4 vs S905X5M: Which Should You Choose?
🏆 Our Verdict
The S905X5M is the better choice in 2026. It offers a cooler, more efficient 6nm process, a higher CPU clock speed, and a newer GPU—all of which improve reliability and responsiveness for IPTV streaming. The price difference is usually small, making the S905X5M the smarter long-term investment.
However: If your budget is very tight and you find an S905X4 box at a significant discount, it will still handle 4K IPTV streams perfectly well.
✅ Choose the S905X5M If You...
- Want better thermal performance and stability
- Stream for long hours (sports marathons, movie sessions)
- Want slightly faster channel switching and navigation
- Plan to keep your device for 2-3+ years
💰 Choose the S905X4 If You...
- Find it at a significantly lower price
- Only need basic 4K streaming
- Are buying a secondary box for a spare room
- Don't mind slightly warmer operation
What About the Full S905X5?
If you want AI upscaling, H.266 support, and true 8K decoding, you need the full S905X5 (ARMv9 Cortex-A510 with NPU). This is a completely different chip from the S905X5M and represents a true generational leap.
Read our detailed comparison: Amlogic S905X5 vs S905X4.
Setting Up Your Box for Optimal IPTV Performance
Regardless of which chip you choose, follow these tips to get the best streaming experience:
- Use Ethernet: A wired connection eliminates Wi-Fi interference and buffering.
- Enable Hardware Decoding: In TiviMate or IPTV Smarters, turn on hardware decoder.
- Increase Buffer Size: Set to "Very Large" (10-15 seconds) for smoother playback.
- Use a VPN: Prevents ISP throttling during peak hours.
- Keep it Cool: Ensure proper ventilation—especially important for the 12nm S905X4.
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Frequently Asked Questions
Is the S905X5M the same as the S905X5?
No. The S905X5M is an updated version of the S905X4 with a higher clock speed and a newer GPU, but it still uses the older ARMv8 architecture. The full S905X5 uses ARMv9 with Cortex-A510 cores and includes an NPU for AI upscaling. They are completely different chips.
Does the S905X5M support 8K?
No. The S905X5M is limited to 4K@60fps decoding. For true 8K, you need a higher-end chip like the S905X5 (full version) or S928X series.
Which is better for IPTV: S905X4 or S905X5M?
The S905X5M is better overall due to its 6nm process, higher clock speed, and newer GPU. It runs cooler and delivers slightly better performance for IPTV streaming.
Can both chips handle 4K IPTV streams?
Yes. Both the S905X4 and S905X5M handle 4K@60fps streaming with AV1 and H.265 codecs without issues.
Do I need a VPN for IPTV streaming?
Highly recommended. A VPN prevents ISP throttling and improves streaming stability, especially during peak hours.
Conclusion
The S905X4 vs S905X5M decision comes down to a few key factors: manufacturing process, clock speed, and GPU generation. The S905X5M wins on all three counts, making it the better choice for anyone buying a new IPTV box in 2026.
If you're looking for AI upscaling, H.266 support, or true 8K decoding, you'll need to step up to the full S905X5. But for reliable 4K IPTV streaming at an affordable price, the S905X5M is the sweet spot.
Whichever chip you choose, pair it with a quality IPTV service like iPTV8KMax and you'll be ready for the best streaming experience of 2026.