Wednesday, March 18, 2015

ThinkPad T450s Review

ThinkPad T450s


The ThinkPad T450s is one of the best new ultrabooks. While it's not as thin as some, it's still quite compact, much easier to service than thinner machines, and the Full HD IPS screen is a standout feature.

This review is based on a production ThinkPad T450s, Machine Type 20BX, Product ID 20BXCTO1WW.
  • Intel Core i7-5600U Processor
  • Windows 8.1 Pro 64
  • 14.0" FHD (1920 x 1080) IPS screen
  • 720p HD Camera
  • Intel HD Graphics 5500
  • 4 GB DDR3L - SDRAM 1600MHz Base
  • Fingerprint Reader
  • 500GB Hard Disk Drive, 7200rpm, 2.5"
  • ThinkPad Battery 3 cell Li-Polymer (23.2Whr) Front
  • ThinkPad Battery 3 cell Li-Polymer (23.2Whr) Rear
  • Country Pack 45W AC adapter United States (2pin)
  • Intel 7265 AC/B/G/N Dual Band Wireless + Bluetooth Version 4.0
After receipt (because upgrading was less expensive than buying from Lenovo):


Quality of T450s construction is not up to old ThinkPad standards, with some obvious cheapening, but is still pretty good. Annoyances include the difficulty of prying off the bottom cover (after removing 8 screws) to get to the inside, and fingerprint-revealing textured plastic instead of the old rubberized finish. But it's quite solid, no flexing, and quite compact.


Port layout is reasonably good on both sides with nothing on the back. All USB ports are 3.0 with excellent performance. Standard Ethernet port. But Mini DisplayPort means you may have to buy and carry an easy-to-lose dongle.* Wi-Fi performance (Intel 802.11ac 2x2) seems better than earlier generation 802.11n Intel cards, even those with 3x3. Bluetooth connections are fast. Speakers are decent but nothing to write home about. Webcam quality is improved over earlier generations, but still struggles in low light. Fingerprint reader is a big improvement. (Thank you, Apple.)


The good news is that the Broadwell i7 in the T450s finally proves to be a bit faster than the Sandy Bridge i7 (T420s) on processor intensive tasks like video encoding, despite an ultra low voltage processor running a little slower. The machine is cool and silent most of the time, with only a soft blowing of air under heavy load.


4 GB of memory is soldered to the main board and there's only one SO-DIMM slot. While you can add an 8 GB SO-DIMM for 12 GB total, that would mean a third of the memory would work in single channel mode, which can have a pretty big impact on performance (as much as 20-30%) especially since the integrated graphics adapter uses part of main memory (reducing available memory). So if you care about performance you'll have to stick with 8 GB, which can be marginal for things like Ultra HD video editing. (The performance impact, of course, also applies to machines with only the base 4 GB memory. The promised NVIDIA 940M graphics option is not yet available.)


The 1920x1080 IPS screen may take some getting used to, but really is a good deal better than TN screens, and is pretty close to proper calibration out of the box. (Be sure to burn in the screen for at least 24 hours before making any judgements.)


The island keyboard is pretty good for what it is, but the layout still suffers as compared to the classic ThinkPad keyboard. Layout of Home End Insert Delete and PrtSc are poor, and other keys like Pause/Break are missing entirely, now only available as Fn key combinations (like Fn+B for Break) that are not marked on the keys. Also annoying is the lack of hardware status lights (hard disk, Wi-Fi, Bluetooth, charging). You can rely on the Windows Task Bar for wireless and charging, but you'll need to install something like DiskLED (which works well) for disk activity. Keyboard backlight is usable (despite some annoying light bleed from the top row), but not as good as the classic ThinkLight.


TrackPoint performs as expected. TouchPad is greatly improved over recent ThinkPad generation with the return of TrackPoint buttons, nice smooth surface, and good response. Bluetooth works quite well with the ThinkPad Bluetooth Laser Mouse (recommended).


With just the standard 2nd battery, not the extended battery with big bulge on the bottom, the T450s can still be used on and off through an entire day without running out of battery power. The supplied power adapter is pretty small, but only 45W, so can't fast charge when the system is under load. If you care about fast charging you should get the optional Slim 65W Adapter.


A mostly welcome return to ThoinkPad form, with a very good IPS screen, and finally enough ultra low voltage processor power to measure up to Sandy Bridge.

* Belkin Mini DisplayPort to HDMI Adapter is available at low cost from B&H.


  1. Hi John,

    Thank you for the great review! I'm not so good with computers and I just ordered the T450s with the base 4GB RAM. I was thinking about adding more memory and I'm deciding between either 4GB or 8GB of additional memory. I noticed you mentioned in your review that adding 8GB might have an impact on performance. I'm mainly using the laptop as my daily work station. I will be using it to analyze large amounts of data on Excel and researching data on the internet through multiple tabs. Would you recommend the 4GB or 8GB of additional memory? Thanks in advance for your help!

    1. The issue of performance degradation from single channel memory operation can be significant, but has to be weighed against the performance benefit of having more memory. Since you're not running long performance-intensive tasks like video editing and rendering, then I think you probably be better off with 12 GB (8 GB additional).

    2. You truly are the best John! I really appreciate your prompt response and help. Have a great weekend!