inspiron 15-7559 p57f002 lcd touch screen free sample

Maintenance miracle. Unfortunately, this is pretty rare nowadays: The maintenance hatch, which is very easy to remove, allows access to all major components of the new multimedia notebook from Dell. Another highlight is the high-resolution 4K touchscreen and thanks to its GTX 960M GPU, it should also attract gamers. Unfortunately, some issues affect the initial good impression.

With a weight of almost 2.7 kg (~6 lb), the 15-inch Dell Inspiron 15 7559 is a multimedia notebook that is not particularly mobile. The most noticeable feature is the high-resolution 4K touchscreen with 3840x2160 pixels. Sufficient performance is ensured by a new Skylake processor with four native cores and Hyperthreading, Intel Core i7-6700HQ, which is supported by 16 GB of DDR3-RAM. The integrated SSD with a capacity of 128 GB is important for smooth user handling, which is complemented by a conventional hard drive with a capacity of 1 TB. The impressive package is rounded off by the performance GPU Nvidia GeForce GTX 960M, even though this will be the limiting factor in games. The lack of an optical drive is unusual for this class of devices. Our review sample from Dell was equipped with a U.S. keyboard.

The design of the black plastic chassis with some red elements is obviously a matter of taste and should be appealing to male users in particular, but we liked it. Both the lid as well as the palm rest have a silky and grippy soft-touch finish, which is not very susceptible to fingerprints and can be easily cleaned. Unusual: The Dell 7559 has three carefully designed fan exhausts. Two of them are located at the back and one on the left side. Despite the absence of metal, the 15-inch device is not really light at 2.7 kg (~6 lb).

Even though the lid, which is easy to open with one hand and tends to bounce, is not really thin, you can see picture distortions at some spots when you apply pressure. As with most touchscreens, the display glass covers almost the entire display frame. It does not require a lot of force to twist the base unit and there was also some unhealthy creaking, which affected the strikingly flawless impression of the chassis. However, we did not notice any build quality issues like uneven gaps or protruding edges.

Since there is no optical drive, Dell could have located the ports further at the back and not at the center of the sides. At least they are not at the front, so attached cables and devices are not a huge problem. Despite the higher price, you only get the essentials as well as three USB 3.0 ports, which however should be sufficient in practice. The HDMI 1.4 output has to be used to connect to external monitors, therefore, it is only possible to use one monitor besides the internal screen. We measured transfer rates of around 100 MB/s at the USB 3.0 port with an external hard drive.

Finally! One large maintenance cover at the bottom secured by only one screw and is very easy to remove, allows access to the following components: Battery, HDD; Wi-Fi module, RAM slots and SSD. What more can you want? The Inspiron 7559 is the most maintenance-friendly notebook that the author has reviewed so far. Only one thing is missing for perfection: A battery that can be removed from the outside.

The conveniently sized touchpad of the Inspiron 7559 is implemented as a ClickPad without dedicated mouse buttons. We really like the slightly roughened surface that is surrounded by a red stripe. Neither the gliding capabilities, nor the feedback give any cause for criticism. Unfortunately, the lower part of the surface was not sitting perfectly on the button mechanics, so even slight pressure often resulted in a clattering.

Dell has provided us with a review sample of the Inspiron 7559 with a U.S. keyboard layout. Large hands might have some problems with the narrow number pad. Visually, the first impression of the well-integrated keyboard is good. Unfortunately, it can be easily dented in the center, which should not happen especially when you consider the price of the notebook.

Dell has followed the trend towards higher resolutions and equipped the Inspiron 15 7559 with an IPS UHD display with a native resolution of 3840x2160 pixels. This results in a pixel density of 244 PPI on the 15.6-inch screen, which means that the pictures are very sharp and you cannot see individual pixels at a normal viewing distance of around 50 centimeters (~20 in). Even higher pixel densities are usually reserved for mobile devices, like the Samsung Galaxy S6 (5.1-inch, 2560x1440 pixels) with 576 PPI. The very glossy surface is a result of the touchscreen functionality. Dell does not offer other displays within the Inspiron 7000 series in Germany.

Now we are looking at color deviations, which are represented by DeltaE values. Lower values indicate a lower deviation from the ideal value and the results should be smaller than 3 for professional purposes. Only the MSI PE60 manages this ex-works, while the other comparison devices, including our review sample manage average results for IPS screens between 4 and 5, which is still sufficient for private users. The MSI display is not suitable for (semi) professional picture editing, because it covers only 64% of the wider AdobeRGB color space. However, it is the best result within the comparison and slightly ahead of our Dell. Our review unit does not suffer from a visible color cast.

Even on cloudy days, the use of the notebook in the outdoors can be problematic due to its very glossy screen, and the decent luminance does not really help. Nevertheless, it is possible to work when you can avoid direct reflections, for example, from bright buildings behind you.

ℹDisplay response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.↔ Response Time Black to White

ℹTo dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.Screen flickering / PWM not detected

If you want a perfect presentation and move around a lot in front of the display, then there is no alternative to the IPS technology. However, there are also differences in this class, which are noticeable by brightness and contrast loss from extreme angles. The display of the Dell Inspiron 15 7559 is average in this respect, but on a high level.

Thanks to the i7 quad-core processor and plenty of fast dual-channel RAM, the Dell Inspiron 15 7559 provides more than enough performance for all common scenarios including HD video editing and 3D rendering. Even heavily parallelized games that benefit from four physical cores should never be limited by the CPU. We have already mentioned that the GPU will be the limiting factor in this case. The SSD ensures a smooth handling in practice, and 128 GB is sufficient for the most important games. Media files and other games can be stored on the additional HDD.

The results in PCMark 7 and 8 are slightly confusing. Why is the PCMark 7 overall score of the less powerful Acer Aspire VN7 36% lower compared to our Dell, but 53% higher in the Productivity benchmark? Moreover, why is the similarly equipped (in terms of CPU) Asus ZenBook Pro 77% better? PCMark 8 result is no less erratic, because the least powerful device, the Acer, comes out on top. And that the MSI PE60 with its conventional hard drive is ahead of our Inspiron 15 7559 is yet another unexpected result.

Nowadays, many modern SSDs are limited to sequential read transfer rates of around 500 MB/S because of the SATA-3 interface, which is also the case for the drive in our test model. If you look at the reading performance of small random files (4K Read), which is important for the launch of the OS and applications, you can see that the Dell Inspiron 15 7559 manages a good 25 MB/s according to AS SSD. This result is close to 30 MB/s, which is what the fastest SSDs manage (Asus ZenBook Pro).

The Dell Inspiron left a negative impression with its aggressive-chaotic CPU fan behavior, at least with the activated power profile "High Performance", which we use for our measurements. Even small workloads will occasionally result in a fan that suddenly spins up and can be clearly heard one meter (~3 ft) away. Increasing the load even further (as with Prime95) will reveal new and intermittent fan speeds, sometimes with high-pitched noises. Overall, it is an acceptable murmur, but it is too loud for the performance level. Add FurMark and the overall noise will drop noticeably after a while, which is probably caused by the throttling.

The Dell Inspiron 15 7559 gets pretty warm under load compared to other notebooks with the same CPU-GPU combination. We were able to measure up to 53 °C (~127 °F) at the bottom, which can be uncomfortable when you want to play games while the laptop is sitting on you lap. This should not be a big problem when the device is standing on the desk though. We can even measure 54 °C (~129 °F) at the top of the base unit (center), but the important area around the palm rest never exceeds 29 °C (~84 °F). The similarly powerful MSI PE60-2QEi581 is noticeably cooler under load, but not while idling.

Despite the integrated subwoofer, the sound of the Dell Inspiron 15 7559 puts too much emphasis on the medium and high tones ex-works (see pictures), which is sometimes more and sometimes less evident depending on the title and can even be a bit obtrusive at times. Really deep bass is missing, but the small subwoofer at the bottom does create a richer sound compared to notebooks without an additional subwoofer. The sound is clear, mostly free of distortions, pretty dynamic for a notebook and there are no annoying volume fluctuations at the decent maximum volume, which is sufficient for medium-sized rooms. Bass-focused Metal music with multiple guitars and drums will bring the sound system from Dell to its limits and it will tend to blur the individual instruments. The sound menu provides an equalizer as well as numerous tweaks and presets for gaming, movies and music.

First, we have a look at the battery capacities of the four notebooks in this comparison. Dell Inspiron 15 7559: 74 Wh, Acer Aspire VN7-572G-72L0: 52.5 Wh, Asus ZenBook Pro UX501JW: 96 Wh (!), MSI PE60-2QWi581: 42 Wh. A direct comparison of the battery runtimes does not really make much sense when you consider these differences, but the results represent the different CPU-GPU combinations and capacities pretty well. The exception is the surprisingly bad result of the battery monster ZenBook Pro in the realistic Wi-Fi test (how we test).

We have already mentioned that the pretty good initial impression of the rather expensive Dell Inspiron 15 7559 (RRP: 1299 Euros/~$1376) suffered a bit during our review. The touchpad, which is actually very good, revealed a build quality issue, and the very soft keyboard disappointed the author. The visually flawless chassis does look pretty great (matter of taste), but should have been sturdier. Optical drives might be less popular, but we expected one due to the size and the multimedia orientation. The touchpad driver is a bad joke, and the pulsating fan control can only be turned down with performance restrictions. The author also thinks the use of expensive touchscreens, which have a glossy surface, does not make a lot of sense for a non-convertible. Another question is whether you can really benefit from the high resolution on a 15-inch device or if there are only drawbacks like scaling issues and the high price.Positive aspects include the good display with the wide viewing angles, high performance and the very maintenance-friendly construction, where you can actually access all important components including the fan by simply removing the maintenance hatch.