Customize Lenovo Z5070 Laptop Intel Core i7-4510U 4gb graphic nvidia 310(USED)

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Description

IN THE BOX
Sales Package Laptop, Battery, AC Adapter, User Guide and Manuals
OVERVIEW
Brand Lenovo
Type Notebook
Series Z Series
Utility Gaming
Color Silver
Model Number 59-428433
PROCESSOR
Processor Name Core i7 (4th Generation)
Variant 4510U
Processor Brand Intel
Clock Speed 2 GHz, Up to 3.1 GHz with Max Turbo Frequency
Cache 4 MB
MEMORY
Expandable Memory Upto 16 GB
Memory Slots 1 (Unused Slot - 0)
RAM 8 GB DDR3
STORAGE
Hard Disk Capacity 1 TB
RPM 5400
Hardware Interface SATA
OPTICAL DISK DRIVE
Optical Drive SuperMulti Tray-in Drive
PLATFORM
Operating System Windows 8.1
Architecture 64 bit
DISPLAY
Screen Size 39.62cm (15.6)
Resolution 1366 x 768 Pixels
Screen Type HD TN GL Flat Display
GRAPHICS
Dedicated Graphics Memory Type DDR3
Dedicated Graphics Memory Capacity 4 GB
Graphic Processor Intel HD Graphics
KEYBOARD/INPUT
Integrated Camera HD Webcam
Pointer Device Touchpad
Keyboard Standard Keyboard
AUDIO
Internal Mic Array Microphone
Speakers Yes
Sound Effect 2 x 1.5 W Speakers
COMMUNICATION
Wireless LAN IEEE 802.11b/g/n
Bluetooth v4.0
POWER & BATTERY
Battery Backup Upto 4 hours
Power Supply 41 W AC Adapter
Standard Battery 4 cell
PORTS/SLOTS
USB Port/S 2 x USB 2.0, 1 x USB 3.0
Mic In Yes
Multi Card Slot 2-in-1 Card Reader
Other Ports 1 x Headphone / Microphone Combo Jack, 1/8 inch Stereo Audio Port
SECURITY
Lock Port Kensington Lock Slot
Size & Weight
Weight 2.4 kg
Dimension(W*D*H) 384 x 265 x 25 mm
Color Silver

 

 

enovo IdeaPad Z50-70 (59427656) Notebook Review

Sven Kloevekorn (translated by Andreas Osthoff), 08/23/2014

Victim of the model policy. Lenovo's new Z50-series offers current and well-implemented mainstream and high-end technology for a small price but also combines it with components that are used in devices for 500 Euros (~$662). Are the display, input devices and case worthy of the 750 Euros (~$993) price tag?

 

For the original German review, see here.

Lenovo's Z50-70-series consists of several black and white models starting at 500 Euros (~$662) that share the same case, but there are several different combinations of CPUs, graphics cards, memory and storage drives. A complete list would go beyond the scope of this review. Looking at the product range of a major mail order company, there are the Kaveri models AMD A10-7300 (4x 1.9-3.2 GHz, TDP 19 W) and A8-7100 (4x 1.8-3.0 GHz, TDP 19 W) that are combined with an AMD Radeon R7 M255 (2 GB). If you prefer Intel processors, you can combine i3, i5 and i7 Haswell processors with the dedicated graphics cards Nvidia GeForce 820M and 840M. SSDs are not available; Lenovo uses conventional drives or hybrid drives with 8 GB SSD cache and a capacity between 500 GB and 1,000 GB instead. The memory equipment is between 4 and 8 GB. Some retailers also list configurations with the 1366x768 resolution, but we could not find any evidence for that. We expect that every local Z50-70 model uses the glossy TN Full HD panel from our review sample that is equipped with a fast Intel Core i7-4510U (2x 2.0-3.1 GHz, Hyper-Threading, TDP 15 W), 8 GB RAM, a dedicated Nvidia GeForce 840M graphics card as well as a 1 TB hybrid hard drive.

The comparison devices for our review unit are similar in regard to the hardware equipment and price. The MSI GP60-2PEi585 that we reviewed in June 2014 uses an Intel Core i5-4200H (2x 2.8-3.4 GHz, Hyper-Threading, TDP 47 W) and the same GPU, but only with 2 instead of 4 GB dedicated memory. The Acer Aspire V5-561G, however, uses a combination of Intel Core i5-4200U (2x 1.6-2.6 GHz, Hyper-Threading, TDP 15 W) and AMD Radeon R7 M265 graphics card. All three notebooks in our comparison have TN displays with 1920x1080 pixels, but the two rivals from MSI and Acer have matte surfaces and conventional hard drives without an SSD cache. All three devices use the operating system Windows 8.1 and weigh around 2.4 kg. The Acer costs around 700 Euros (~$927), the Lenovo 750 Euros (~$993) and the MSI 800 Euros (~$1059) at the time of writing.

Case

The case of the Z50-70 is completely black, mainly made of plastic, and it has a futuristic and angular design. The slightly brighter display cover is matte and shimmery, the top of the base unit has a brushed metal finish that attracts fingerprints. The display frame is glossy; the bottom has a knobbed pattern to improve grip.

You don't need a whole lot of force to twist the base unit, which results in inconvenient creaking sounds. The same applies for the flexible display, push on the back and you can see picture distortions at some spots. The hinge keeps the display well in position and just slightly bounces during sudden movements, for example, in a car or on a train ride. We could not see any obvious build quality flaws like protruding edges or uneven gaps, only the maintenance cover was not perfectly integrated (also see Maintenance section).

Connectivity

As is often the case with mainstream notebooks that share their case with much less expensive versions, the connectivity cannot really keep up with the expectations for this price range. There is only one USB 3.0 port, and otherwise you just get the essentials. The ports are also located very far to the front, so attached cables and devices can be disturbing when you use an external mouse.

Left side: AC, fan exhaust, VGA, Ethernet (fold-out), HDMI, USB 2.0, USB 3.0
Left side: AC, fan exhaust, VGA, Ethernet (fold-out), HDMI, USB 2.0, USB 3.0
Right side: stereo jack, SD card, USB 2.0, DVD burner
Right side: stereo jack, SD card, USB 2.0, DVD burner

Communication

Wired LAN is available via fold-out Ethernet port, but you can obviously use wireless connection as well. The Atheros Communications AR9565 Wireless Network adaptor neither supports 5 GHz networks nor the latest Gigabit-WLAN IEEE 802.11ac, but at least Bluetooth 4.0. The signal quality in the individual setup of the author was average with an increasing distance from the router and several architectural barriers, which might just be an issue if you have to deal with a low signal quality.

Accessories

Apart from the power adaptor, quick-start guide and warranty information, there is nothing in the box, not even installation or recovery drives. This is standard in this price range. 

Maintenance

The maintenance cover is secured by three screws and grants easy access to the HDD, fan, WLAN module and memory slots. This means it is easy to maintain or upgrade the notebook – exemplary.

Warranty

Lenovo's information about the manufacturer's warranty is contradictory. The product page says two years, but if you enter the serial number here, it says one year. The first picture in the gallery on the right side shows the different warranty extensions you can purchase.

Input Devices

Keyboard

The author never reviewed a device before where it was so easy to push downthe whole keyboard as in the case of the Lenovo Z50-70, which creates a cheap initial impression that is even enhanced by the large clattering keys. The rest of the keyboard does not win any awards, either. The travel is just okay, but the pressure point was too spongy and the stroke too hard in our opinion. F1 to F12 can only be used via Fn key; the standard functions are typical special features like louder/quieter and darker/brighter. If you want to use the normal functions keys, you won't be happy about the tiny and low-contrast lettering. The layout, however, deserves praise: All keys are at their expected places; Shift and Ctrl are bigger (similar to desktop inputs). The key surface is roughened and slightly concave.

Touchpad

Right from the beginning we asked ourselves why the classic touchpad is not bigger when you consider the available space. The silver frame does leave a noble impression in return. The surface is not completely sensitive toward the peripheral areas, but it is slightly roughened, which is usually preferred by the author in regard to the feedback. However, in this case, at least subjectively, it supports the suboptimal gliding capabilities. Precision and response did not cause any criticism, and Drag & Drop also worked very well. The two buttons cannot really convince with their mechanics, they are too deep inside the case and offer too much resistance for our taste. The feedback is still okay but could be better. It also depends on the spot you press. Since the touchpad is too far on the left, you can hardly avoid any contact with your palm during gaming with the WASD keys. The two screenshots on the top right show the most important driver settings.

Display

The glossy 15.6-inch TN display (16:9) does manage a usable pixel density of 141 ppi thanks to the Full HD resolution – but that's all the good news. Certain combinations of fonts and background colors result in blurry pictures and the brightness of the IdeaPad only reaches 200 nits, which can be expected for an inexpensive notebook. However, the less expensive Acer Aspire V5-561G manages a very decent 300 nits, but you get an unbelievably high black value of 1.29 cd/m² in return. We cannot really say if the poor brightness distribution of 78% is noticeable in practice because of the catastrophic viewing angles – but more on that later. We could not determine brightness reductions on battery power.

Screen
Brightness (sort by value)
Lenovo IdeaPad Z50-70 (59427656)
192 cd/m² ∼27%
MSI GP60-2PEi585
209 cd/m² ∼30%
Acer Aspire V5-561G
280 cd/m² ∼40%
Brightness Distribution (sort by value)
Lenovo IdeaPad Z50-70 (59427656)
78 % ∼78%
MSI GP60-2PEi585
77 % ∼77%
Acer Aspire V5-561G
85 % ∼85%
Black Level (sort by value)
Lenovo IdeaPad Z50-70 (59427656)
0.37 % * ∼7%
MSI GP60-2PEi585
0.3 % * ∼6%
Acer Aspire V5-561G
1.27 % * ∼25%
Contrast (sort by value)
Lenovo IdeaPad Z50-70 (59427656)
546 :1 ∼34%
MSI GP60-2PEi585
760 :1 ∼48%
Acer Aspire V5-561G
236 :1 ∼15%
Colorchecker DeltaE2000 (sort by value)
Lenovo IdeaPad Z50-70 (59427656)
10.23 * ∼68%
MSI GP60-2PEi585
7.11 * ∼47%
Acer Aspire V5-561G
10.93 * ∼73%
Greyscale DeltaE2000 (sort by value)
Lenovo IdeaPad Z50-70 (59427656)
10.04 * ∼67%
MSI GP60-2PEi585
8.38 * ∼56%
Acer Aspire V5-561G
12.96 * ∼86%
Gamma (sort by value)
Lenovo IdeaPad Z50-70 (59427656)
2.2 ∼63%
MSI GP60-2PEi585
2.22 ∼63%
Acer Aspire V5-561G
2.39 ∼68%
CCT (sort by value)
Lenovo IdeaPad Z50-70 (59427656)
10347 ∼1035%
MSI GP60-2PEi585
10041 ∼1004%
Acer Aspire V5-561G
11591 ∼1159%
Color Space (Percent of AdobeRGB 1998) (sort by value)
Lenovo IdeaPad Z50-70 (59427656)
35 % ∼35%
MSI GP60-2PEi585
56 % ∼56%
Acer Aspire V5-561G
45.3 % ∼45%

Legend

 
Lenovo IdeaPad Z50-70 (59427656)Intel Core i7-4510U, NVIDIA GeForce 840M, Seagate ST1000LM014 Solid State Hybrid Drive
 
MSI GP60-2PEi585Intel Core i5-4200H, NVIDIA GeForce 840M, Western Digital Scorpio Blue WD5000LPVX
 
Acer Aspire V5-561GIntel Core i5-4200U, AMD Radeon R7 M265, WDC Scorpio Blue WD10JPVX-22JC3T0

* ... smaller is better

 
 
 
  193
cd/m²
206
cd/m²
165
cd/m²
 
  211
cd/m²
202
cd/m²
177
cd/m²
 
  201
cd/m²
207
cd/m²
169
cd/m²
 
 
Distribution of brightness
X-Rite i1Pro 2
Maximum: 211 cd/m² Average: 192.3 cd/m²
Brightness Distribution: 78 %
Center on Battery: 202 cd/m²
Contrast: 546:1 (Black: 0.37 cd/m²)
ΔE Color 10.23 | - Ø
ΔE Greyscale 10.04 | - Ø
35% AdobeRGB 1998 (Argyll) 
Gamma: 2.2

The average contrast ratio of 546:1 is not very good, either. The resulting black value of 0.37 cd/m² improves the weak overall impression a bit. The MSI GP60-2PEi585 can score in this discipline and has a better display overall, but the screen is still just average. Another typical issue of TN panels is the low color accuracy that is represented by all three comparison devices with high DeltaE values of 7 and 8 (MSI), 10 (review unit) and an exorbitant 13 (Acer, grayscale). Our review sample also has a strong blue cast without calibration. 35% coverage of the large color space AdobeRGB, which is usually only important for professional users, is insufficient, even for a TN panel. It is astonishing that the MSI manages a very good 56% despite the TN panel.

CalMAN Grayscale
CalMAN Grayscale
CalMAN ColorChecker
CalMAN ColorChecker
CalMAN Saturation Sweeps
CalMAN Saturation Sweeps
CalMAN Color Management
CalMAN Color Management
Lenovo IdeaPad Z50-70 (59427656) vs. AdobeRGB
Lenovo IdeaPad Z50-70 (59427656) vs. AdobeRGB
Lenovo IdeaPad Z50-70 (59427656) vs. sRGB
Lenovo IdeaPad Z50-70 (59427656) vs. sRGB

You cannot really use the device outdoors, at least on sunny days. It is even hard to find a position in the shade (third picture) where you can see the picture at all. This is the price of the very glossy and dark display.

We already mentioned that the viewing-angle stability was so bad that we subjectively could not evaluate the black value and the brightness distribution. If you're looking on a completely black picture (RGB 0,0,0) directly from the center, you can only see black in the center area, the rest is dark gray. The dark area moves with vertical changes of the viewing angle. The typical picture distortionsof TN panels with shifted viewing angles, like a milky impression from the top and inverted colors from the bottom, are very distinct in the case of this panel. The viewing-angle stability is also much worse compared to good TN panels.

Poor viewing-angle stability
Poor viewing-angle stability
 

Performance

Our Lenovo IdeaPad Z50-70 is a typical mainstream multimedia notebook with a pretty powerful Core i7 CPU, which is accompanied by the mainstream GPU Nvidia GeForce 840M with 4 GB dedicated memory, which was just released in March 2014. This means the performance is not only sufficient for all office tasks, but also for real-time video editing or complex picture editing, for instance. Games are more limited by the GPU than the CPU, but you should be able to play even complex titles with 1366x768 pixels in medium, sometimes even high, settings.

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