Bán Laptop HP Elitebook 2540P 12 inch. Cấu hình Hp 2540P I7-620M, Ram 2G, ổ cứng HDD 80G, màn hình nhỏ gọn 12 inch. Pin lâu sử dụng 2H-4H. BH 3 tháng.
Bán Laptop HP Elitebook 2540P I7-620M HCM Gò Vấp
Model HP Elitebook 2560P 12 inch nhỏ, gọn, bỏ vừa cốp xe
I7-L640 4MB L3 cache, Ram 2GB, HDD ổ cứng 80G
VGA Intel HD Graphics đồ họa cơ bản tốt
Pin 6 cell dùng 2H-3H
Màn hình 12 inch nhỏ, gọn, phân giải 1280x800
Có Webcam cho bạn chat Facebook, Zalo, Viber và nhiều ứng dụng khác.
Giá bán HP 2540P I7: 3.000.000 VND
Bảo hành 3 tháng
Giá 3 triệu cho 1 chiếc Laptop Core I7 thế hệ 1 có quá rẻ???
Rẻ quá? Bạn hoàn toàn có thể sở hữu 1 chiếc Laptop Core I7 mà không cần phải bỏ quá nhiều tiền
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The subnotebook does not have a very bright screen, with an average reading of 195 cd/m². Perfectly bright screens which are suitable for use outdoors range from 230 to 300 cd/m². The screen’s distribution of brightness is very uniform at 90%, with the brightest point measuring 202 cd/m².
The brightness can be automatically regulated by an ambient light sensor which sits below the screen in the frame. The sensor responds to the brightness of the room by adjusting the intensity of the LEDs in the display. In sunlight the backlighting increases to maximum; at night it can sink almost as low as 100 cd/m².
The reason behind the light sensor is to conserve energy as well as being kind to your eyes. As the LED backlighting consumes between 3 and 5 Watts, it makes sense to try to save energy in this area; and a screen that is too bright in a darkened room will tire out the eyes. The sensor removes the need for the user to make manual adjustments. We deactivated the sensor using Fn + F11 during our screen brightness readings.
The version of the EliteBook 2540p with the best processor has a Core i7-640LM (2.13 GHz). We chose this model to review over the one with a Core i5-540M (2.53 GHz). The 540M is not a low voltage processor, and so the battery life would have been shorter.
The 640LM-Westmere-CPU has two native cores each with 2.13 GHz (standard speed). The actual speed varies constantly between this standard and 2.93 GHz thanks to Intel’s Turbo Boost technology. This is an automatic overclocking of individual cores, depending on the demand produced by single or multicore applications.
The Core i7-640LM’s hyper-threading feature adds two virtual cores to the two real ones. It means applications can access up to four threads. Turbo Boost also works with the virtual cores, as you would expect.
The 640LM has a TDP of 25 Watts, including the memory controller and Intel Graphics Media Accelerator HD. For a low voltage processor this seems like a lot. A Core i5-520UM has a TDP of 18 Watts (Acer Aspire 1830T). The Intel HD has a speed of 266-566 MHz (it varies when Turbo Boost is not active) and achieves a score of 1,205 in the 3DMark2006 test.
We don’t understand why there is a miserly 2,048 MB of DDR3 memory (PC3-10700, Hyundai) on the motherboard. The single memory slot under the access panel on the underside of the laptop is empty. We assume that the 2 GB is soldered on to the motherboard. For a laptop in this high price range, you want to be upgrading from 4 GB and not 2 GB.
|PCMark 05 Standard||
|PCMark Vantage Result||
The low voltage CPU in the EliteBook 2540p is fast, considerably faster than the earlier Core 2 Duo Low Voltage Elite. If you suspect that the i7’s application performance will be very strong as a result, you are partly right.
The PCMark Vantage benchmark gave a result of 5,149 points. This score tops the i5-520UM (overclocked, Asus PL30JT-RO030X, 4,536 points) and beats by a clear margin the Acer Aspire 1830T-52U4G32n (not overclocked, 3,950 points). It beats even the fastest SP9400 system (Dell Latitude E4300, 7,200 rpm HDD) which scores 3,732 points.
The application performance is about equal to the i5-430M notebooks with mid-range GPUs (e.g. HP ProBook 6540b WD690E). i7-720QM systems, depending on the speed of their hard drives, score around 5,091 (Deviltech Fire DTX) or 6,225 points (MSI GX740-i7247LW7P). So to say that the EliteBook 2540p works at a true Core i7 level is valid, but could also be contested.
|3DMark 03 Standard||
|3DMark 05 Standard||
|3DMark 06 Standard||
It could have scored several more points in the PCMark Vantage test, if it weren’t for the fact that the Toshiba hard drive (type MK1633GSG) with a total capacity of 160 GB is comparatively slow. It has the usual speed of 5,400 rpm, but it is only a 1.8-inch microSATA HDD.
HDTune gave an average transfer rate of 43.4 MB/s in sequential reading. This is clearly below the average for 2.5-inch hard drives. This is why the HDD score in the PCMark Vantage test was so low at 3,046 points.
The hard drive represents the biggest difference in performance between the 2540p and the larger EliteBooks/ ProBooks 8540w and 4720s. HP gives them faster 7,200 rpm hard drives as standard (about 80 MB/s), which tends to lead to better system performance (PCMark Vantage HDD score: 4,000 points).
31.7 / 33.8 / 33.9 dB(A)
||36.3 / dB(A)|
||36 / 43.3 dB(A)|
min: , med: , max: (15 cm distance)
The integrated stereo loudspeakers are located below the touchpad. Although they apparently send their sound down towards the table top, the sound is loud and undistorted - but not particularly well balanced. Because of the tiny membranes in the speakers, the bass notes are lacking entirely, with the sound emphasising the middle frequencies too strongly. The sound quality for music can be slightly improved when Virtual Surround is selected from the loudspeaker options. It makes the sound just a touch fuller.
When connecting up external speakers via the 3.5mm audio output (combined with microphone input), we noticed an unusually high volume level. In a simple listening test we did not hear any distortion of the sound.
|Idle (without WLAN, min brightness)||
|Load (maximum brightness)||
Small notebooks with good battery life generally have a low energy consumption. This is true of the EliteBook 2540p. The minimum energy consumption, while the laptop was idle, was 7.6 Watts. In battery mode or energy-saving mode the speed of the Core i7-640LM processor falls to 1.2 GHz from 2.13 GHz. The maximum energy usage while the laptop was idle was 12.4 Watts. For this everything was activated which might consume power (wireless modules, maximum screen brightness, high performance mode).
Interestingly there was a large difference between the idle values above and the maximum energy usage during our stress test. When we fully occupied the four threads of the i7-640LM and kept the integrated Intel HD busy with Furmark, our multimeter showed 46.1 Watts. So it is no surprise that the battery life under heavy use sinks to 1 hour 40 minutes (Battery Eater Classic, not stress test workload). The small 65 Watt mains adaptor has a suitable capacity and reaches a maximum temperature of 48°C during periods of high energy usage.
|Off / Standby||0.1 / 0.4 Watt|
7.6 / 11.5 / 12.4 Watt
29.4 / 46.1 Watt
|Key: min: , med: , max:|