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QNAP TS-351 vs QNAP TS-431P3
The quick verdict
- Leads on more specsQNAP TS-431P34 of 8 differing specs (drive bays 4, CPU cores 4)
- Best forTS-351 for anyone running it 24/7 on little powerTS-431P3 for small offices sharing files
Rankings and scores come from the specs alone and are not affected by affiliate commissions.
Spec ruler
In short
Bottom line. Of the 8 specs that differ, the QNAP TS-351 leads on 3 (boost clock, weight, and volume) and the QNAP TS-431P3 on 4 (drive bays, CPU cores, max LAN speed, and 1 more); 1 is within 2%. On our small-office file server index, the TS-431P3 scores 60/100 against 33/100.
Using the 12 specs published on QNAP's official hardware specification pages, here is how the QNAP TS-351 and QNAP TS-431P3 compare. Drive bays: the TS-431P3 at 4 bays versus 3 bays for the TS-351, 1 bay more (1.3x). Among 219 QNAP models, the TS-431P3 ranks in the bottom 35% and the TS-351 in the bottom 12%. The TS-431P3 leads on CPU cores, 4 cores to 2 cores, 2.0x. Among 204 QNAP models, the TS-431P3 ranks in the top 22% and the TS-351 in the bottom 9%. On boost clock, the TS-351 posts 2.58 GHz and the TS-431P3 1.7 GHz, a gap of 0.88 GHz. Among 201 QNAP models, the TS-351 ranks in the bottom 46% and the TS-431P3 in the bottom 19%. Max LAN speed: the TS-431P3 at 2.5 Gbps versus 1 Gbps for the TS-351, 1.5 Gbps higher (2.5x). Among 219 QNAP models, the TS-431P3 ranks in the bottom 48% and the TS-351 in the bottom 22%.
Key differences 3
Max LAN speedTS-431P3 leads
- TS-431P3 2.5 Gbps vs the TS-351 at 1 Gbps
- the TS-431P3 is 2.5x faster
- among 219 QNAP models: TS-431P3 in the bottom 48%, TS-351 in the bottom 22%
100 GB copy: about 5 min vs about 13 min (theoretical)
CPU coresTS-431P3 leads
- TS-431P3 4 cores vs the TS-351 at 2 cores
- the TS-431P3 has 2.0x the CPU cores
- among 204 QNAP models: TS-431P3 in the top 22%, TS-351 in the bottom 9%
4 cores for backups and transcodes at once
LAN portsTS-431P3 leads
- TS-431P3 2 ports vs the TS-351 at 1 port
- the TS-431P3 has 2.0x the LAN ports
- among 219 QNAP models: TS-431P3 in the bottom 38%, TS-351 in the bottom 8%
2 ports for link bonding or separate networks
Key specs at a glance
| Spec | TS-351 | TS-431P3 |
|---|---|---|
| Max LAN speed | 1 Gbpsbottom 22% | 2.5 GbpsWINbottom 48% |
| CPU cores | 2bottom 9% | 4WINtop 22% |
| LAN ports | 1bottom 8% | 2WINbottom 38% |
| Boost clock | 2.58 GHzWINbottom 46% | 1.7 GHzbottom 19% |
| Drive bays | 3bottom 12% | 4WINbottom 35% |
| Weight | 1.64 kgWINtop 8% | 2.01 kgtop 12% |
Show every spec
| Spec | TS-351 | TS-431P3 |
|---|---|---|
| Drive bays | 3bottom 12% | 4WINbottom 35% |
| CPU cores | 2bottom 9% | 4WINtop 22% |
| Boost clock | 2.58 GHzWINbottom 46% | 1.7 GHzbottom 19% |
| Base RAM | 4 GBbottom 47% | 4 GBbottom 47% |
| Max RAM | 8 GBbottom 25% | 8 GBbottom 25% |
| Max LAN speed | 1 Gbpsbottom 22% | 2.5 GbpsWINbottom 48% |
| LAN ports | 1bottom 8% | 2WINbottom 38% |
| M.2 slots | 2top 4% | – |
| USB ports | 3bottom 27% | 3bottom 27% |
| Weight | 1.64 kgWINtop 8% | 2.01 kgtop 12% |
| Volume | 5.54 LWINtop 15% | 5.83 Ltop 17% |
| Operating power | 26.2 Wtop 15% | 26.7 Wtop 16% |
| Warranty | 2 yrbottom 35% | 2 yrbottom 35% |
| Metric (0–100) | TS-351 | TS-431P3 |
|---|---|---|
| Performance percentile | 8.3 | 11.7WIN |
| Lightness percentile | 92.4WIN | 87.9 |
| Compactness percentile | 85.2WIN | 82.2 |
| Home media server fit | 84 | No data |
| Small office fit | 33 | 60WIN |
| 10GbE video editing fit | 18WIN | 2 |
| Low-power compact 24/7 fit | 68WIN | 67 |
The details
How to choose
- Boost clock matters most → the TS-351 (2.58 GHz vs 1.7 GHz)
- Max LAN speed matters most → the TS-431P3 (2.5 Gbps vs 1 Gbps)
More TS-351 leads
- Boost clock: 2.58 GHz vs 1.7 GHz
- Weight: 1.64 kg vs 2.01 kg
- Volume: 5.54 L vs 5.83 L
More TS-431P3 leads
- Drive bays: 4 bays vs 3 bays
Combined metrics
- Total built-in LAN bandwidth (sum of port speeds): TS-431P3 3.5 Gbps vs 1 Gbps
- Operating power per bay: TS-431P3 6.68 W vs 8.74 W
Combined metrics
- Weight per bay: TS-431P3 0.5 kg vs 0.55 kg
- Memory headroom (max minus base): 4 GB on both
Within 2%
- Operating power: TS-351 26.2 W, TS-431P3 26.7 W
Same on both
- base RAM 4 GB, max RAM 8 GB, USB ports 3, warranty 2 years
Use-case scores
- Small-office file server: TS-431P3 60 vs 33
- 10GbE video editing: TS-351 18 vs 2
- Low-power compact 24/7 use: TS-351 68 vs 67
Use-case scores are Specotomy's own index, computed by fixed rules from official manufacturer specs; they are not manufacturer scores.
FAQ
- Which has the faster built-in LAN, the QNAP TS-351 or the QNAP TS-431P3?
- The TS-431P3, with 2.5 Gbps against 1 Gbps for the TS-351.
- Which has more drive bays, the QNAP TS-351 or the QNAP TS-431P3?
- The TS-431P3, with 4 bays against 3 bays for the TS-351.
- Which is lighter, the QNAP TS-351 or the QNAP TS-431P3?
- The TS-351, with 1.64 kg against 2.01 kg for the TS-431P3.
- Which use cases suit the QNAP TS-351 and the QNAP TS-431P3?
- A small-office file server: the TS-431P3. Low-power compact 24/7 use: the TS-351. (based on our own use-case index)