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QNAP TS-451DEU Specs, Pros and Cons

Last updated:

The quick verdict

  • StrengthsM.2 slots 2 (top 4%), warranty 3 yr (top 7%)
  • WeaknessesCPU cores 2 (bottom 9%), base RAM 2 GB (bottom 14%)
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Rankings and scores come from the specs alone and are not affected by affiliate commissions.

Spec ruler

Chart placing the QNAP TS-451DEU on a 0 to 100 ruler for each spec within the category
Longer bars mean a better value within the category (top %). The numbers are the actual specs.

In short

Bottom line. The QNAP TS-451DEU lists 4 drive bays, 2 CPU cores, boost clock 2.9 GHz, and base RAM 2 GB in its official specs. Against 219 QNAP models, its strengths are 2 M.2 slots (top 4%), volume 5.58 L (top 16%), and operating power 28 W (top 18%), and its weak spots are 2 CPU cores (bottom 9%), base RAM 2 GB (bottom 14%), and max RAM 8 GB (bottom 25%).

This page lays out the QNAP TS-451DEU from the 13 specs published on QNAP's official hardware specification pages. Drive bays: 4 bays (bottom 35% of 219). The TS-451DEU has 2 CPU cores (bottom 9% of 204). Boost clock comes in at 2.9 GHz (top 39% of 201). Base RAM: 2 GB (bottom 14% of 219). The TS-451DEU's max RAM is 8 GB (bottom 25% of 219). Max LAN speed comes in at 2.5 Gbps (bottom 48% of 219). LAN ports: 2 ports (bottom 38% of 219). The TS-451DEU has 2 M.2 slots (top 4% of 136). USB ports comes in at 4 ports (top 35% of 219). Weight: 4.15 kg (top 27% of 212). The TS-451DEU's volume is 5.58 L (top 16% of 217). Operating power comes in at 28 W (top 18% of 208).

Key points

M.2 slotsStrength

  • 2 slots
  • top 4% of 136 QNAP models

2 M.2 SSD cache slot(s) speed up frequently used files

VolumeStrength

  • 5.58 L
  • top 16% of 217 QNAP models

Operating powerStrength

  • 28 W
  • top 18% of 208 QNAP models

about 245.5 kWh a year if left on 24/7

Key specs at a glance

Key specs at a glance
SpecTS-451DEU
M.2 slots2top 4%
Warranty3 yrtop 7%
Volume5.58 Ltop 16%
Operating power28 Wtop 18%
Weight4.15 kgtop 27%
USB ports4top 35%
Show every spec
Full specifications
SpecTS-451DEU
Drive bays4bottom 35%
CPU cores2bottom 9%
Boost clock2.9 GHztop 39%
Base RAM2 GBbottom 14%
Max RAM8 GBbottom 25%
Max LAN speed2.5 Gbpsbottom 48%
LAN ports2bottom 38%
M.2 slots2top 4%
USB ports4top 35%
Weight4.15 kgtop 27%
Volume5.58 Ltop 16%
Operating power28 Wtop 18%
Warranty3 yrtop 7%
Derived metrics
Metric (0–100)TS-451DEU
Performance percentile12.5
Lightness percentile73
Compactness percentile84.3
Small office fit60
10GbE video editing fit18
Low-power compact 24/7 fit26

The details

Weak spots (bottom 25%)

  • 2 CPU cores: bottom 9%
  • Base RAM 2 GB: bottom 14%
  • Max RAM 8 GB: bottom 25%

Performance and memory

  • Boost clock: 2.9 GHz (top 39%)

Storage and connections

  • Drive bays: 4 bays (bottom 35%)
  • Max LAN speed: 2.5 Gbps (bottom 48%)

Storage and connections

  • LAN ports: 2 ports (bottom 38%)
  • USB ports: 4 ports (top 35%)

Size, power and warranty

  • Weight: 4.15 kg (top 27%)
  • Warranty: 3 years (top 7%)

TS-451DEU vs the similar TS-451D26 match, 2 more differ

  • Base RAM: 2 GB vs 4 GB
  • Max LAN speed: 2.5 Gbps vs 1 Gbps
  • Weight: 4.15 kg vs 2.09 kg

TS-451DEU vs the similar TS-4626 match, 4 more differ

  • Base RAM: 2 GB vs 4 GB
  • Max RAM: 8 GB vs 16 GB
  • LAN ports: 2 ports vs 1 port

TS-451DEU vs the similar TS-462A6 match, 2 more differ

  • CPU cores: 2 cores vs 4 cores
  • Base RAM: 2 GB vs 4 GB
  • Max RAM: 8 GB vs 16 GB

Combined metrics

  • Total built-in LAN bandwidth (sum of port speeds): 5 Gbps
  • Operating power per bay: 7.01 W

Combined metrics

  • Weight per bay: 1.04 kg
  • Memory headroom (max minus base): 6 GB

Use-case scores

  • Small-office file server: 60
  • Low-power compact 24/7 use: 26
  • 10GbE video editing: 18

Not in the official specs

  • PCIe slots

Use-case scores are Specotomy's own index, computed by fixed rules from official manufacturer specs; they are not manufacturer scores.

FAQ

What is the max LAN speed of the QNAP TS-451DEU?
2.5 Gbps.
What is the max RAM of the QNAP TS-451DEU?
8 GB.
How many drive bays does the QNAP TS-451DEU have?
4.
What is the operating power of the QNAP TS-451DEU?
28 W.
How many M.2 slots does the QNAP TS-451DEU have?
2.