System Performance

We’ve already seen a lot of Broadwell Core i5 and i7 devices this year. The T450s comes with a couple of CPU options and we have the middle tier which is the Intel Core i5-5300U. This is a dual-core chip with hyperthreading, and it has a base frequency of 2.3 GHz with a Turbo of 2.9 GHz. As with most of the Ultrabook parts, it is designed in a 15 Watt envelope. Skylake has just been announced, but Ultrabooks featuring it are still not available, so Broadwell is where we are at. That’s not really a bad place to be either. The T450s can be configured with up to 20 GB of memory and it has a single DIMM slot to let you upgrade the RAM. This means that 4 GB of memory is soldered onboard. The model we received has 8 GB of memory in a dual-channel configuration.

Graphics are powered by the Intel HD 5500 GPU, with a 300 MHz base frequency and 900 MHz turbo. The HD 5500 has 24 execution units arranged in three slices of 8. Storage can be either hard disk based or solid state, and the review unit has a Toshiba 256 GB SSD. This is not going to offer the insane performance of the ThinkPad X1 Carbon’s PCIe Samsung drive, but any of the SSD choices are obviously the right decision unless you are really on a budget. Lenovo offers up to 1 TB of hard drive or 512 GB of SSD, but the Opal 2.0 certified option maxes out at 256 GB.

Performance Graphs

For system performance, we have run the ThinkPad T450s through our 2015 laptop workloads. The graphs include a sampling of other similar notebooks, but if you want to compare the ThinkPad T450s to any other notebook we have tested please use our Notebook Bench. As a reminder the ThinkPad T450s is not yet offered with Windows 10 from Lenovo, so these results are based on Windows 8.1


PCMark 8 - Home

PCMark 8 - Creative

PCMark 8 - Work

PCMark 8 - Storage

PCMark 7 (2013)

PCMark tries to replicate real world use scenarios with its various workloads. It will have sustained performance as well as burst performance requirements, and storage is also a factor in the scores. The ThinkPad T450s scores very well on these tests, outperforming other devices with Core i7 even. Since PCMark is a comprehensive test, even things like display resolution come into play so the 1920x1080 panel is a benefit to these scores since the GPU has an easier time. Storage is right in line with other SSD based devices. PCMark tends to group all SSDs pretty closely together because of the traces it uses to score the result.


To get a better feel for the absolute performance of the drive, CrystalDiskMark was run which provides the typical maximum speeds and this will show more of a difference in maximum speeds than PCMark will. That does not discredit PCMark though since it is trying to show real world performance, and maximum transfer speeds don’t come into play as often when you are doing office tasks. The T450s shows good performance, but for those that need to move very large files around, a notebook with PCIe storage is going to be a better choice. I don’t think that’s the target market for the T450s though the performance is adequate.


Cinebench R15 - Single-Threaded Benchmark

Cinebench R15 - Multi-Threaded Benchmark

Cinebench R11.5 - Single-Threaded Benchmark

Cinebench R11.5 - Multi-Threaded Benchmark

Cinebench is a mostly CPU benchmark. The Core i5-5300U is exactly where you would expect which is between the X1 Carbon with its Core i7-5600U and the Dell XPS 13’s Core i5-5200U.


x264 HD 5.x

x264 HD 5.x

As with Cinebench, this mostly CPU based test shows the performance gain achieved with the mid-level Core i5 in this notebook.

Web Tests

Mozilla Kraken 1.1

Google Octane 2.0


Web browsing continues to be an important metric. On this Windows 8.1 device, testing was done with the latest version of Chrome (version 45) but with Windows 10 now released, we’ll be switching to Edge since its performance is now comparable. The i5-5300U once again shows it is a decent upgrade over the base i5-5200U.

Overall System Performance

There is not a lot of surprises right now in the Ultrabook space. Broadwell-U based devices have been shipping since the beginning of the year and this notebook is still only available with Windows 8.1. Overall performance is very good for this class of device and the i5-5300U is a reasonable upgrade over the base offering. For those that need better performance, there is an i7-5600U model as well which should then score this laptop similar to the X1 Carbon in the above graphs. The choice of SSD is not the fastest around, but it still offers good sequential and random speeds, it just can’t compare to the latest PCIe based storage on something like the X1 Carbon.

Design GPU Performance
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  • Samus - Tuesday, September 15, 2015 - link

    I like the idea of power bridge a lot. I also appreciate they have finally dropped 1366x768 completely (unlike HP) but what the hell is wrong with Lenovo...

    The battery life is not competitive and it's really thick. The HP zBook 14 is the same thickness and it has a discrete GPU while meeting all the same MIL STD 810G criteria. Then there's the Elitebook 1040 putting this thing (and the X1) to shame in overall capability and performance is a thin durable chassis.

    I appreciate the review of a corporate notebook, keep'em coming, I'd like to see some Dell's and HP's!
  • close - Tuesday, September 15, 2015 - link

    Also it appears that times are a'changin'. The only way this keyboard feels good and you can say Lenovo "really nailed it" is if you haven't tried the old style keyboard in years. I have the X1 Carbon and it's ok but as soon as I fall back to my old X200 I get all these memories coming back, reminding me what a good keyboard is.

    I understand that the old-style keyboard doesn't fit the ultrabook format but I still can't fully agree with the "really nailed input" remark.
  • Flunk - Tuesday, September 15, 2015 - link

    The X1 has a particularly shallow keyboard due to its thickness. I've used the more recent t series keyboards quite a lot and I find them quite good for a laptop keyboard.
  • jimpreis - Sunday, September 20, 2015 - link

    X1 *Carbon. The X1 was a completely different product.
  • LoganPowell - Friday, November 27, 2015 - link

    the Lenovo Thinkpad is one of the best laptops on the market in my opinion, but there are still a couple that are higher ranked (see for example...)
  • Brett Howse - Tuesday, September 15, 2015 - link

    Everyone loves the good old days, but the X1 Carbon keyboard is not the same as this one so please don't use it as a reference for this model's keyboard. The T450s is one of the best notebook keyboards that I've used in recent times.
  • noeldillabough - Tuesday, September 15, 2015 - link

    I too was **extremely** pessimistic when they changed the keyboard (X230 days) but I've been using the new keyboards for years now and they're really great.

    Now don't get me started on the function keys changes and touchpad fiascos, they've finally come to their senses a bit.

    Now Lenovo please make a T460P...I need a new computer.
  • michaelhouston12 - Saturday, November 14, 2015 - link

    If you're looking for a laptop that can give you best features but affordable, I strongly recommend Acer C720 Chromebook. Found here:
  • chris9000 - Thursday, September 17, 2015 - link

    Yep. I own the T450s and I have to say that I actually like the keyboard. The IPS screen is also quite nice.
  • quanta - Wednesday, September 23, 2015 - link

    Really? The only thing Lenovo nailed it is coffins to loyal Thinkpad users. Last time I checked, when Lenovo switched to the ill-conceived layouts from the Intel CBB[1] in ThinkPad X1 Carbon and X230, the users resorted to ripping the old Lenovo laptop keyboards to the new models[2], because it is so bloody awful![3][4]


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