戴尔 Latitude 14 E5450 笔记本电脑简短评测
| Dell Latitude 14 E5450 HD Graphics 4400, 4310U, Lite-On LCS-128L9S | Toshiba Tecra Z40t-A1410 HD Graphics 4400, 4310U, Hitachi Travelstar Z7K500 HTS725050A7E630 | Lenovo Thinkpad T440s 20AQ0069GE HD Graphics 4400, 4600U, Samsung SSD 840 250GB MZ7TD2560/0L9 | HP EliteBook 840 G1 HD Graphics 4400, 4600U, Intel SSD Pro 1500 Series SSDSC2BF180A4H | |
|---|---|---|---|---|
| Display | -6% | -0% | -36% | |
| Display P3 Coverage (%) | 66.8 | 66.5 0% | 66.9 0% | 41.65 -38% |
| sRGB Coverage (%) | 93.2 | 84.8 -9% | 92.8 0% | 62.3 -33% |
| AdobeRGB 1998 Coverage (%) | 68.2 | 61.9 -9% | 67.8 -1% | 43.08 -37% |
| Screen | -4% | -10% | -67% | |
| Brightness middle (cd/m²) | 293 | 281.5 -4% | 310 6% | 280 -4% |
| Brightness (cd/m²) | 271 | 273 1% | 282 4% | 280 3% |
| Brightness Distribution (%) | 85 | 76 -11% | 85 0% | 87 2% |
| Black Level * (cd/m²) | 0.291 | 0.236 19% | 0.38 -31% | 0.69 -137% |
| Contrast (:1) | 1007 | 1193 18% | 816 -19% | 406 -60% |
| Colorchecker dE 2000 * | 3.81 | 4.9 -29% | 4.56 -20% | 9.41 -147% |
| Greyscale dE 2000 * | 3.97 | 4.63 -17% | 5.12 -29% | 10.19 -157% |
| Gamma | 2.51 88% | 2.41 91% | 2.66 83% | 2.49 88% |
| CCT | 7368 88% | 6004 108% | 6116 106% | 12671 51% |
| Color Space (Percent of AdobeRGB 1998) (%) | 60.4 | 57.29 -5% | 64 6% | 40 -34% |
| Total Average (Program / Settings) | -5% /
-4% | -5% /
-8% | -52% /
-58% |
* ... smaller is better
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AU Optronics AUO133D (B140HAN) tested with X-Rite i1Pro 2
Maximum: 297 cd/m² (Nits) Average: 270.8 cd/m²Brightness Distribution: 85 %
Center on Battery: 220 cd/m²
Contrast: 1007:1 (Black: 0.291 cd/m²)
ΔE ColorChecker Calman: 3.81 | ∀{0.5-29.43 Ø4.79}
ΔE Greyscale Calman: 3.97 | ∀{0.09-98 Ø5}
60.4% AdobeRGB 1998 (Argyll 1.6.3 3D)
68.2% AdobeRGB 1998 (Argyll 3D)
93.2% sRGB (Argyll 3D)
66.8% Display P3 (Argyll 3D)
Gamma: 2.51
CCT: 7368 K
| Cinebench R15 | |
| CPU Multi 64Bit (sort by value) | |
| Dell Latitude 14 E5450 | |
| HP EliteBook 850 G1-H5G34ET | |
| Lenovo Thinkpad T440s 20AQ0069GE | |
| HP EliteBook 840 G1 | |
| CPU Single 64Bit (sort by value) | |
| Dell Latitude 14 E5450 | |
| HP EliteBook 850 G1-H5G34ET | |
| Lenovo Thinkpad T440s 20AQ0069GE | |
| HP EliteBook 840 G1 | |
| PCMark 7 - Score (sort by value) | |
| Dell Latitude 14 E5450 | |
| Toshiba Tecra Z40t-A1410 | |
| HP EliteBook 850 G1-H5G34ET | |
| Lenovo Thinkpad T440s 20AQ0069GE | |
| HP EliteBook 840 G1 | |
| PCMark 7 Score | 3469 points | |
| PCMark 8 Home Score Accelerated v2 | 2824 points | |
| PCMark 8 Creative Score Accelerated v2 | 3340 points | |
| PCMark 8 Work Score Accelerated v2 | 2338 points | |
Help | ||
| CrystalDiskMark 3.0 | |
| Read 4k (sort by value) | |
| Dell Latitude 14 E5450 | |
| Toshiba Tecra Z40t-A1410 | |
| HP EliteBook 850 G1-H5G34ET | |
| Lenovo Thinkpad T440s 20AQ0069GE | |
| HP EliteBook 840 G1 | |
| Write 4k (sort by value) | |
| Dell Latitude 14 E5450 | |
| Toshiba Tecra Z40t-A1410 | |
| HP EliteBook 850 G1-H5G34ET | |
| Lenovo Thinkpad T440s 20AQ0069GE | |
| HP EliteBook 840 G1 | |
| Read Seq (sort by value) | |
| Dell Latitude 14 E5450 | |
| Toshiba Tecra Z40t-A1410 | |
| HP EliteBook 850 G1-H5G34ET | |
| Lenovo Thinkpad T440s 20AQ0069GE | |
| HP EliteBook 840 G1 | |
| Write Seq (sort by value) | |
| Dell Latitude 14 E5450 | |
| Toshiba Tecra Z40t-A1410 | |
| HP EliteBook 850 G1-H5G34ET | |
| Lenovo Thinkpad T440s 20AQ0069GE | |
| HP EliteBook 840 G1 | |
Lite-On LCS-128L9S
Sequential Read:
483.4 MB/s
Sequential Write:
336.9 MB/s
512K Read:
380.9 MB/s
512K Write:
335.5 MB/s
4K Read:
25.22 MB/s
4K Write:
74.4 MB/s
4K QD32 Read:
389.4 MB/s
4K QD32 Write:
317.3 MB/s
| 3DMark 11 - 1280x720 Performance (sort by value) | |
| Dell Latitude 14 E5450 | |
| HP EliteBook 850 G1-H5G34ET | |
| Lenovo Thinkpad T440s 20AQ0069GE | |
| HP EliteBook 840 G1 | |
| 3DMark 11 Performance | 990 points | |
| 3DMark Ice Storm Standard Score | 41270 points | |
| 3DMark Cloud Gate Standard Score | 4358 points | |
| 3DMark Fire Strike Score | 564 points | |
Help | ||
| Dell Latitude 14 E5450 HD Graphics 4400, 4310U, Lite-On LCS-128L9S | Toshiba Tecra Z40t-A1410 HD Graphics 4400, 4310U, Hitachi Travelstar Z7K500 HTS725050A7E630 | HP EliteBook 850 G1-H5G34ET HD Graphics 4400, 4200U, Hitachi Travelstar Z7K500 HTS725050A7E630 | HP EliteBook 840 G1 HD Graphics 4400, 4600U, Intel SSD Pro 1500 Series SSDSC2BF180A4H | |
|---|---|---|---|---|
| Tomb Raider | ||||
| 1024x768 Low Preset (fps) | 42.2 | 37.2 -12% | 52.4 24% | |
| BioShock Infinite | ||||
| 1280x720 Very Low Preset (fps) | 30.33 | 29.16 -4% | ||
| Total Average (Program / Settings) | -4% /
-4% | -12% /
-12% | 24% /
24% |
| low | med. | high | ultra | |
|---|---|---|---|---|
| Tomb Raider (2013) | 42.2 | 20.6 | 12 | |
| BioShock Infinite (2013) | 30.33 | 15.6 | 13.3 | 4.23 |
| Dell Latitude 14 E5450 HD Graphics 4400, 4310U, Lite-On LCS-128L9S | Toshiba Tecra Z40t-A1410 HD Graphics 4400, 4310U, Hitachi Travelstar Z7K500 HTS725050A7E630 | HP EliteBook 850 G1-H5G34ET HD Graphics 4400, 4200U, Hitachi Travelstar Z7K500 HTS725050A7E630 | Lenovo Thinkpad T440s 20AQ0069GE HD Graphics 4400, 4600U, Samsung SSD 840 250GB MZ7TD2560/0L9 | |
|---|---|---|---|---|
| Noise | -20% | -7% | 0% | |
| Idle Minimum * (dB) | 28.6 | 34.2 -20% | 31.1 -9% | 28 2% |
| Idle Average * (dB) | 28.6 | 34.3 -20% | 31.3 -9% | 28 2% |
| Idle Maximum * (dB) | 28.6 | 34.5 -21% | 31.3 -9% | 29.8 -4% |
| Load Average * (dB) | 33 | 38.8 -18% | 33.3 -1% | 32.9 -0% |
| Load Maximum * (dB) | 33.3 | 39.9 -20% | 36.2 -9% | 33.4 -0% |
* ... smaller is better
Noise level
| Idle |
| 28.6 / 28.6 / 28.6 dB(A) |
| Load |
| 33 / 33.3 dB(A) |
 | ||
30 dB silent 40 dB(A) audible 50 dB(A) loud |
||
min:  , med:  , max:  Voltcraft sl-451 (15 cm distance) | ||
(±) The average temperature for the upper side under maximal load is 32.6 °C / 91 F, compared to the average of 29.5 °C / 85 F for the devices in the class Office.
(±) The maximum temperature on the upper side is 44 °C / 111 F, compared to the average of 34.3 °C / 94 F, ranging from 21.2 to 62.5 °C for the class Office.
(±) The bottom heats up to a maximum of 41.5 °C / 107 F, compared to the average of 36.8 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 27.6 °C / 82 F, compared to the device average of 29.5 °C / 85 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 26.8 °C / 80.2 F and are therefore cool to the touch.
(±) The average temperature of the palmrest area of similar devices was 27.6 °C / 81.7 F (+0.8 °C / 1.5 F).
(±) The maximum temperature on the upper side is 44 °C / 111 F, compared to the average of 34.3 °C / 94 F, ranging from 21.2 to 62.5 °C for the class Office.
(±) The bottom heats up to a maximum of 41.5 °C / 107 F, compared to the average of 36.8 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 27.6 °C / 82 F, compared to the device average of 29.5 °C / 85 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 26.8 °C / 80.2 F and are therefore cool to the touch.
(±) The average temperature of the palmrest area of similar devices was 27.6 °C / 81.7 F (+0.8 °C / 1.5 F).
Power Consumption
| Off / Standby | 0 / 0.1 Watt |
| Idle | 4.5 / 8.4 / 9.6 Watt |
| Load |
33.4 / 33.7 Watt |
   
| |
Key:
min: ,
med: ,
max: Extech Power Analyzer 390803 | |
| Battery runtime - WiFi (sort by value) | |
| Dell Latitude 14 E5450 | |
| Lenovo Thinkpad T440s 20AQ0069GE | |
| Toshiba Tecra Z40t-A1410 | |
| HP EliteBook 850 G1-H5G34ET | |
| HP EliteBook 840 G1 | |
它十分不错的输入设备给了我们很深的印象。它的键盘键程均匀，舒适。触控板的按键也用起来很方便。它可以流畅快速地识别单指或多点手势的触控操作。尽管我们的测试机属于中端商务设备，但它IPS屏幕的对比度和亮度都非常优秀。
在性能的方面，这款戴尔笔记本会成为竞争者的强大对手。它在噪音散热的方面也十分不错。不过和联想 ThinkPad T440s一样，在机身温度上还有改进的空间。
遗憾的是，它的电池续航无法支持一天的工作。尽管戴尔没有提供大容量的电池，而外置电池的160欧元（约1220人民币）售价也不算便宜。对于日常办公使用来说，Latitude E5450笔记本十分值得推荐。不过，我们也建议用户参考一下同类的其他笔记本产品。
注：本文是基于完整评测的缩减版本，阅读完整的英文评测，请点击这里。
