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   Posté le 19-12-2012 ŕ 07:25:02   
Lenovo X121e-204562U Laptop Review
The 11.6-inch ThinkPad X121e continues the budget-conscious tradition of its two predecessors, the X120e and the X100e, but with a brand new case design reminiscent of the Lenovo Edge E125. This particular model under review includes the relatively powerful ultra-low voltage (ULV) second generation Intel Core i3-2357M CPU, although users can also opt for the Intel Pentium 957. The X120e was the winner of the Best Affordable Business Ultraportable at CES 2011 and received high praise from us as well, so let's find out how the X121e stacks up in this in-depth review. [b]Lenovo 57Y6455 adapter[/b]
In terms of looks and form, the chassis is absolutely similar to the ThinkPad Edge E125, down to the stiff hinges, textured touchpad, roomy keyboard and even the lack of system LEDs. Overall, the frame provides above average pressure and torsional resistance both inside and out. See our review of the E125 here for a detail overview of the case and its features.
At 23.5mm thick and a weight of 1.55kg, the Lenovo X121e is a hair thinner than the X120e and weighs about the same, but the model still retains the excellent sense of durability and sturdiness. The new design of the X121e is definitely more eye pleasing than the somewhat boxier build of the X120e. Of course, the magnesium alloy construct and roll cage of the larger and more expensive ThinkPads are a lot tougher, but the build of the X121e definitely ranks high amongst other similarly sized netbooks. As usual, the ThinkPad offers a more professional and business-class feel compared to its competitors, and the X121e is no exception.

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The model under review, however, comes in the alternate red color option instead of the usual black, which actually brings a small but notable difference in feel. While the E125 had a soft, rough-textured top, this particular red model is completely smooth and more of a fingerprint magnet. In addition, the gray lining around the edges of the lid is also absent. Overall, the red model loses a bit of that classy feel, but thankfully users have a choice between the black or red color options.
Performance
The ThinkPad X121e in review is powered by an ULV Intel Sandy Bridge Core i3-2357M CPU running at 1.3GHz with a thermal design power (TDP) of 17 watts. This dual-core processor is relatively new at the time of review and can handle 4 threads simultaneously, but lacks the Turbo Boost function commonly found in higher end Sandy Bridge CPUs. Here, the processor is built on a 32nm fabrication process with 128KB of L1 cache, 512KB of L2 cache and 3072KB of L3 cache.

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This Core i3 processor also integrates an Intel HD Graphics 3000 GPU, which offers 12 unified pipelines and an overall performance level somewhat less than the entry-level discrete Nvidia GeForce 310M. Still, the Intel GPU lacks DirectX 11 support. It offers a low base clock rate to save power, but does, however, support Turbo Boost up to 950MHz. This particular GPU will borrow from the system RAM as needed.
Two gigabytes of PC3-10600 DDR3 SDRAM at 667MHz is provided by Samsung in a single module. Similarly to the Lenovo E125, the Lenovo mainboard can support up to 2 modules maximum and is easily accessible by loosening the three screws from the underside of the notebook.

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In the CPU-oriented benchmarks, the Core i3-2357M performs admirably for a sub 12-inch notebook and handily beats the Fusion E-350 in the X120e. For example, the X121e completes Wprime 1024m in 1422 seconds and SuperPi 32m in about 25 minutes, while the X120e took 2257 seconds and 41 minutes, respectively.
The PCMark Vantage test provided a score of 4170 points, which is very good even for a notebook this size. The score puts the X121e in line with the 15.6-inch Acer Aspire 5625G (1.6GHz Phenom II X4 P920) and 15.6-inch Lenovo Ideapad G560 (2.26GHz Core i3-350M).

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Compared to competing 11-inch netbooks such as the Sony Vaio VPC-YA1V9E/B (1.33GHz Core i3-380UM) and Acer Travelmate 8172T (1.2GHz Core i3-330UM), the X121e achieves a PCMark Vantage score 24 percent and 12 percent better, respectively. Additionally, the X121e Cinebench R10 Multi 64-bit score is higher than either netbook by almost 500 points each.
The Sandy Bridge Core i3-2357M appears to provide a noticeable performance boost compared to the first generation Core i3 CPUs noted above and an even greater advantage over AMD Fusion APUs. In the sub 12-inch category, the X121e with Sandy Bridge is going to provide one of the biggest bangs for the buck.
Since the Core i3-2357M is relatively new to the market, notebooks sporting the CPU are few and far between at the time of review. The Samsung NP900X1B is currently the other major 11.6-inch notebook offering the Core i3-2357M.

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The graphics-benchmarks for the X121e are adequate for a netbook as well. The 3DMark Vantage scores are better than the integrated Radeon HD 6310 found in the X120e and is multiple orders of magnitude higher than the Intel GMA HD Graphics core found in many first generation Core ix netbooks. Heavy gaming is still not recommended with this hardware, however, as most modern games are still relatively unplayable at low to medium settings. Of course, the X121e is not targeting gamers, so the weak 3D performance of the integrated low power Intel HD 3000 graphics should be expected. For further information about the video performance of the Sandy Bridge Intel HD 3000, please go to our dedicated page on the subject here.
For video playback, the processor handles 720p and 1080p videos on Youtube and 480p videos on Hulu flawlessly through its HDMI 1.4 port. Likewise, 2K resolution Youtube videos play with no stuttering, although 4K resolution videos are a slideshow.

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We didn't stop there, however, as we wanted to see how the X121e fairs with multiple and simultaneous 1080p video streams. Through a connected FullHD HDTV, a 1080p AVC1 trailer for Transformers 3 was played with multiple instances of VLC media player. Video bitrate was variable, ranging from around 5000 kb/sec to 15000 kb/sec. The notebook was able to playback two simultaneous streams with no problems, but massive frame drops occurred with three streams. The CPU usages for each stream, as shown on Windows Task Manager, are provided below.
The Lenovo X121e in this review includes a 320GB HTS723232A7A364 SATA hard drive from Hitachi with a rotational speed of 5400RPM. Results from HD Tune provided an average transfer rate of 77.6 MB/sec, which is a bit slower than the Seagate drive found in our X120e review. Regardless, the HDD speeds are still a notable improvement over the older Lenovo X100e. Of the total available space, about 10GB is reserved for the Lenovo_Recovery partition.

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Users have the option to equip the notebook with a 128GB Lenovo RapidDrive SSD if faster speeds are a top priority.
Gaming Verdict
For good measure, we benchmarked the X121e with the popular PC/Mac exclusive Starcraft 2 and racing game GRID.
For the Blizzard game, the short intro dialogue to the single-player challenge "For the Swarm" was used as it represents a good mix of units, dynamic Zerg creep and lava doodads. Unless low settings are acceptable, the game is near unplayable at even the preset medium settings. Multiplayer games like Starcraft are going to need the highest frame rates it can get, so don't expect too many other modern fast-paced games to do well on the X121e, either.

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GRID had similar results when racing one lap around the German course with the BMW 320SI. It becomes that much more difficult to beat the AI drivers the higher the graphics settings are.
Slower games where trigger-happy fingers aren't required, such as Sims 3, should play adequately on the X121e.
Gaming Verdict
For good measure, we benchmarked the X121e with the popular PC/Mac exclusive Starcraft 2 and racing game GRID.
For the Blizzard game, the short intro dialogue to the single-player challenge "For the Swarm" was used as it represents a good mix of units, dynamic Zerg creep and lava doodads. Unless low settings are acceptable, the game is near unplayable at even the preset medium settings. Multiplayer games like Starcraft are going to need the highest frame rates it can get, so don't expect too many other modern fast-paced games to do well on the X121e, either.

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GRID had similar results when racing one lap around the German course with the BMW 320SI. It becomes that much more difficult to beat the AI drivers the higher the graphics settings are.
Slower games where trigger-happy fingers aren't required, such as Sims 3, should play adequately on the X121e.

The Lenovo ThinkPad X121e subnotebook aka netbook brings a lot to the table that the X120e missed, including a brighter screen, a design overhaul, keyboard enhancements and a smaller 6-cell battery with comparable battery life. The new chassis is also much more appealing while still retaining that ThinkPad-class look. The increased CPU performance brought in by the Sandy Bridge chipset is also far superior to the Fusion APU offered by the X120e. These improvements alone make up for most of the shortcomings of the X120e.

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The boost in power, unfortunately, comes with a couple of drawbacks. The first is an overall hotter temperature of the laptop, which is fairly significant compared to the X120e. It was somewhat expected that the Core i3 would bring a measureable increase in temperature compared to the Fusion E-350, but a rise to well over 40 degrees C under load may be a little too much.
Secondly, expect fan noise to be perceptibly louder as the cooling unit will be working overtime to keep that powerful CPU operational. If the notebook is being used for heavy multitasking or playing modern games, anticipate even louder noises as the fan ramps up in speed.

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Regardless of the new disadvantages, the redesigned X121e still offers the same extensive connectivity options as its predecessor, including HDMI, Bluetooth, WLAN, SIM and a new WWAN card, albeit with no docking port. Business users on a budget with good CPU performance and small size as top priorities cannot go wrong with the Lenovo X121e. This 11.6-inch notebook is definitely a worthy entry to the ThinkPad X Series.