Choosing between the Siglent SDS804X and the Rigol DHO804 can be challenging because both offer excellent performance, modern UI, and competitive pricing in the 70–100 MHz entry-level oscilloscope market.
Bottom line: The Siglent SDS804X is the better pick if accuracy, deeper memory, and included serial decoding matter most. The Rigol DHO804 is the better pick if you want a faster visual debugging experience, a sharper display, and a compact bench scope.
| Feature | Siglent SDS804X | Rigol DHO804 | Best Choice |
|---|---|---|---|
| Bandwidth | 70 MHz | 70 MHz | Tie |
| Analog channels | 4 channels | 4 channels | Tie |
| Vertical resolution | 12-bit | 12-bit | Tie |
| Maximum sample rate | 2 GSa/s | 1.25 GSa/s | Siglent SDS804X |
| Memory depth | Up to 200 Mpts | Up to 100 Mpts | Siglent SDS804X |
| Serial decoding | Standard / included | Optional | Siglent SDS804X |
| Waveform update rate | About 120k wfm/s | About 500k wfm/s | Rigol DHO804 |
| Display | 8-inch, 1024×600 | 8-inch, 1280×800 | Rigol DHO804 |
| Signal accuracy | Strong noise performance and measurement fidelity | Good 12-bit performance with faster visual responsiveness | Siglent SDS804X |
| Best fit | Embedded work, serial buses, long captures, measurement-focused users | General debugging, glitch hunting, compact benches, fast visual work | Depends on priority |
Buy the Siglent SDS804X if you want the better measurement-focused scope. It has the higher sample rate, deeper memory, and serial decoding included out of the box.
Skip it if: you care more about the fastest waveform update rate, a higher-resolution screen, and a more compact feel.
Buy the Rigol DHO804 if you want the faster, more visual debugging scope. It has the higher waveform update rate, sharper screen, compact footprint, and very responsive UI.
Skip it if: you need the deepest memory or want serial decoding included without adding option keys.
🏷️ Oscilloscope Deals ⭐⭐⭐⭐
This guide walks through each scope’s strengths, weaknesses, specs, performance, and ideal use cases so you can confidently choose the right one for your lab.
Quick Comparison
| Feature | Siglent SDS804X | Rigol DHO804 |
|---|---|---|
| Bandwidth | 70 MHz | 70 MHz |
| Channels | 4 analog | 4 analog |
| Max Sample Rate | 2 GSa/s | 1.25 GSa/s |
| Memory Depth | Up to 200 Mpts | Up to 100 Mpts |
| Display | 8-inch, 1024×600 | 8-inch, 1280×800 |
| Vertical Resolution | 12-bit | 12-bit |
| Serial Decode | Standard | Optional |
| Waveform Update Rate | ~120k wfm/s | ~500k wfm/s |
| MSO Option | Yes | Yes |
| 💳 Pricing | 💲 Check Price | 💲 Check Price |
Overview of the Two Scopes
Siglent SDS804X
The SDS804X is part of Siglent’s new X-Series platform, featuring a 12-bit ADC, deep memory, and extremely clean signal acquisition. It targets engineers who value measurement accuracy, powerful serial decode capabilities, and a stable user experience. With 2 GSa/s and 200 Mpts memory options, the SDS804X excels in embedded and mixed-signal work.
Buy: 👉 Siglent SDS804X
Rigol DHO804
Rigol’s DHO804 is a compact, lightweight scope built on Rigol’s UltraVision III platform. It offers a crisp high-resolution screen, advanced UI, and extremely fast waveform update rates—ideal for users who want responsiveness and visualization clarity. Although its memory system is shallower than Siglent’s, the DHO804 is an excellent tool for general electronics debugging.
Buy: 👉 Rigol DHO804
Performance Comparison
Acquisition & Signal Quality
Siglent SDS804X
The 12-bit front end combined with Siglent’s clean analog path gives the SDS804X excellent noise performance. The higher sample rate (2 GSa/s) provides more detail for fast edges and precise timing analysis.
Rigol DHO804
Rigol also uses a 12-bit system, but the DHO804’s sample rate is lower. However, it compensates with extremely high waveform update rates (up to ~500k wfm/s), making glitches and anomalies easier to spot.
Verdict:
Siglent wins for precision and measurement fidelity.
Rigol wins for visual responsiveness and glitch capture.
Memory Depth
Siglent SDS804X: Up to 200 Mpts for long captures at high sample rates.
Rigol DHO804: Up to 100 Mpts—good, but half of Siglent’s capacity.
Verdict:
Siglent clearly wins for deep captures.
Serial Protocol Decoding
Siglent SDS804X: Serial decoding is included at no extra cost.
Rigol DHO804: Requires paid option keys to unlock decoding.
Verdict:
Siglent includes more features out of the box.
Display & User Experience
Siglent SDS804X: Clean and stable UI with traditional layout.
Rigol DHO804: Higher 1280×800 resolution and smoother interface animations.
Verdict:
Rigol wins for UI polish; Siglent wins for operational stability.
Triggering & Analysis Tools
Both scopes offer advanced triggers such as edge, pulse, runt, pattern, and serial protocol triggers.
Siglent provides more built-in analysis options, while Rigol emphasizes speed and real-time responsiveness.
Build Quality & Reliability
Siglent SDS804X
- Sturdy semi-industrial chassis
- Quiet operation
- Excellent thermal control
- Feels like a professional bench instrument
Rigol DHO804
- More compact and lightweight
- Slightly louder fans
- Durable but less premium feel
Verdict:
Siglent feels more robust; Rigol is more portable.
Which One Should You Choose?
Choose Siglent SDS804X if you want:
- Highest signal accuracy
- Deepest memory in its class
- Serial decode included
- Better long-form capture capability
- A professional-grade analog front end
Choose Rigol DHO804 if you want:
- Fastest waveform updates
- Best UI and screen clarity
- Compact footprint
- Exceptional glitch detection performance
- A more “visual” debugging experience
Final Verdict
Both oscilloscopes are excellent, but they are optimized for different priorities.
Siglent SDS804X is the better choice for engineers who value measurement accuracy, deeper memory, and having premium features included without option codes.
Rigol DHO804 is ideal for users who want a modern UI, extremely fast waveform updates, and a lightweight footprint for portable or hobbyist bench setups.
If accuracy and long captures matter most, choose Siglent.
If UI smoothness and visual responsiveness matter most, choose Rigol.
