Center at the recent CES in Las Vegas, Lenovo launched a consumer product based on AMD processor platform Lenovo 3000 series G455 notebook. In terms of product positioning, Lenovo G455 is more oriented towards the needs of mainstream entertainment users, the product with AMD's Athlon II Dual-Core Mobile M320 processor equipped with AMD 785GX + SB750 chipset with HD 4530 series of discrete graphics cards. Just from the hardware specifications, this notebook is practical and can meet some mainstream regular applications and general multimedia applications. And our evaluation center also in the first time for you to test (related content:

"Main VISION visual Lenovo G455 notebook sneak preview"

). The performance can be seen from the performance of the Lenovo G455 in daily entertainment as well as complex office applications, its overall performance can be said to be more than enough. With the ?3A platform? s reasonable matching, the Lenovo G455 shows more advantages in video and audio.

Lenovo G455 Notebook

Computer (

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Lenovo G455 Notebook

Inside (

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Throughout the entire review process we mainly considered the performance of its core components in a comprehensive way, in fact, apart from performance. In addition to performance, the AMD VISION also features a low price point, and at less than $4,000, it's still one of the most affordable entertainment notebooks we've tested in a long time. When the product was released, it was priced at less than 3,999 yuan, which is enough to reach the consumer's desire to buy. But we also have to recognize that as a sensible business, behind the cheap, indeed to further control costs to ensure the survival of the enterprise. For this reason, we in this article will be in the form of disassembly, with you together on the Lenovo G4550 notebook materials for a more detailed understanding.

Lenovo G455 notebook specifications

Processor subsystem

Processor model

DualCore AMD Athlon X2 QL-21 (AMD Athlon II Dual-Core Mobile M320)

Codename

K10

Number of cores/threads

2/2

Main Clock

2.1GHz

Multiplier Range

5.0x-10.5x

External Bus

800MHz FSB

L1 Code Cache

64 KB per Core

L1 Data Cache

64 KB per core

L2 Cache

512 KB per core

Processor Instruction Set

x86, x86-64, MMX, 3DNow!

Motherboard Model

Lenovo Bali

Chip Set

Northbridge: AMD 785GX

Southbridge: SB750

Supported Memory Types

SO-DIMM DDR2-800

Maximum Expandable Capacity

4GB

Configured Memory Types

SO-DIMM DDR2-800

Max. p>

Configuration Memory Type

1x Ramaxel Tech. RMN1150HC48D7F-800 (1GB SO-DIMM DDR2-800)

Graphics Subsystem

Graphics Type

Discrete Graphics

Graphics Model

ATI Mobility Radeon HD 4530

Core Codename

M93

Core Frequency

550MHz

Memory Capacity

512MB

Storage

Subsystems

Disk Controller

Hard Disk

ST925031 5AS SATA Disk Device (250 GB, 5400 RPM, SATA-II)

Optical Drive

HL-DT-ST DVDRAM GT30N SATA CdRom Device

Sound Subsystem

Sound Card

Conexant Cx20585

Speakers

2 (located below the screen

)

Network

Connectivity

Wired Network

Atheros AR8132 PCI-E Fast Ethernet Controller

WLAN Network

Atheros AR9285 Wireless Network Adapter

Bluetooth

N/A

Infrared

N/A

Display

Size

13.9 (17:9)

Resolution

1366?768

Backlight Type

LED

Battery

Battery Model

GC86508SAT0

Battery Type

Lithium Battery

Capacity

11.1V/48Wh

Interfaces and Special Features

Security

Chip

N/A

Camera

1.3 MegaPixel

USB Ports

3 USB 2.0

IEEE1394

N/A

eSATA

N/A

Video ports

1 VGA, no HDMI

Audio ports

1 headset

jack, 1 microphone jack

Card reader

SD card reader

Network card

Interface

1 Gigabit Ethernet port

Power

Interface

1

Expansion slot

N/A

Other interfaces

N/A

Physical specifications

Laptop dimensions

346x235x37.6mm (LxWxD)

Laptop net weight

2.334kg

Travel weight (w/adapter)

2.792kg

Reference offer

RMB 3999

Lenovo G455 Notebook

PC (

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As a mobile platform targeted at mainstream entertainment applications, the Lenovo G455 benefits from a 14-inch mold specification, with a looser internal design, as well as relatively simple disassembly. This also facilitates maintenance and the user's own upgrades to a certain extent.

Lenovo G455 Notebook

Bottom (

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Lenovo G455 Notebook

Inside (

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Lenovo G455 Core (

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Since the Vision is more powerful than the Vision, it is also easier for users to use. Notebook with Vision has more improvements than AMD's previous 65nm process products, so its bottom of the body is not designed to ventilate openings, relying entirely on centrifugal fans with a single heatpipe program for the AMD Athlon II Dual-Core Mobile M320 processor, the 785GX Northbridge chip, and the Mobility Radeon HD 4530 graphics card. In practice, we found that this cooling solution works well in high-load applications.

5V/0.25A centrifugal fan (

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Single heat pipe with cooling fins (

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The Lenovo G455 employs a flat, trench-type heatpipe measuring around 8mm in width to conduct heat from the AMD Athlon II Dual-Core Mobile M320 dual-core processors directly to the dense copper fins at the evaporating end of the heatpipe, which are blown out of the chassis by a centrifugal fan. The AMD 785GX North Bridge and Radeon HD 4530 graphics cards are cooled by their own aluminum fins, and the heat is blown out by centrifugal fans through the air ducts underneath the motherboard.

AMD Athlon II Dual-Core Mobile M320 (

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AMD Athlon II Dual-Core Mobile M320 processor (

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Because the Lenovo G455 laptop has opted for modular management in its design. As a result, we had a relatively simple operation in removing the core components. Its standard AMD Athlon II Dual-Core Mobile M320 processor is a product positioned in the mid-range. With a 2.1GHz clock frequency, its performance is comparable to that of the Intel Pentium Dual-Core T4200 processor in our previous tests, and its overall power consumption and heat generation are much lower than that of the previous generation of 65nm processors due to the use of the 45nm processor.

ATI Mobility Radeon HD 4500 series graphics cards

(

)

The ATi Mobility Radeon HD 4530 graphics chip is based on a 55nm RV710-derived core with 242 million transistors, 80 stream processors, 8 texture units, and a single graphics card. processors, 8 texture units, 4 rasterization units, and support for 12x CFAA antialiasing. With a core frequency of 550MHz and a memory frequency of 800MHz, it is suitable for running mainstream games and HD video processing in daily use, and its TDP is only about 13W.

Randomly equipped with a standard 1GB memory (Ramaxel) DDR2-800 memory (

)

Slightly insufficient is the Lenovo randomly configured memory capacity is low, randomly configured with only a single 1GB memory (Ramaxel) DDR2-800 memory, in the current similar products do not have the advantage to speak of, and to a certain extent affects the overall performance of the playback. It also affects the overall performance to a certain extent.

Built-in DVD burner (

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HL-DT-ST DVDRAM GT30N SATA drive (

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Lenovo G455 laptop comes with a standard Hitach-LG burner, which can be easily removed by removing the fixing bolts on the bottom center of the case.

Seagat ST925031 5AS 5400 RPM SATA (

)

The standard Seagate Momentus 250GB 5400 RPM SATAII hard drive comes with a single-disc 250GB platter with 8MB of cache, and an average spin-up latency of 5.6ms. the internal maximum data transfer rate is 1175Mbit. The maximum internal data transfer rate is 1175Mbit/s.

The Atheros AR9285 wireless LAN card (

)

The half-height PCIE form factor of the Atheros AR9285 wireless LAN card is available in an 8mm ?8mm QFN package, which is a good size for the device. With good support for 802.11n, it offers higher performance than existing 802.11g technology, with speeds up to 150 Mbps. The card integrates a MAC/baseband, RF transceiver, power amplifier, low-noise amplifier, antenna switch? i.e., a complete RF front end (RF front end) and a comprehensive solution.

Lenovo G455 laptop C-side panel (

)

After learning about the specifications of the main components of the Lenovo G455 laptop, let's further disassemble its body. After removing the four bolts inside the battery compartment, the panel above the Lenovo G455 keyboard that integrates the power on/off switch, system restore function keys, and numeric and alphabetic case status indicators can be directly removed.

The panel of function keys on top of the keyboard (

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The bottom of the panel is designed with simple control circuits (

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The bottom of the panel is designed with simple control circuits as well as six-core cables needed to interface with the motherboard. While removing the panel, we can see that there are also two fixing bolts at the top of the keyboard, which can be removed directly after removing the two bolts.

Full-size keyboard disassembly (

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Lenovo G455 laptop keyboard (

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Lenovo G455 laptop keyboard bottom (

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Lenovo G455 laptop in the design of the keyboard does not have a lot of fancy places, in the design of the keyboard belongs to the type of moderate and comfortable touch. The tactile aspect is more comfortable, coupled with the frosted texture of the keycap design, the coefficient of friction is more suitable for direct contact with the skin, and there will not be a sticky feeling in the long time use. At the bottom of the keyboard, the G455 is supported by a double-layer metal plate, which ensures sturdy pressure resistance while also providing good radiation shielding.

Lenovo G455 laptop (

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Taking into account the overall power consumption of the product is not high, while the cost constraints, in the Lenovo G455 laptop body did not introduce any metal design, including the body of the lowest molds have chosen to use engineering plastics.

Lenovo G455 laptop (

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Lenovo G455 laptop screen pivot (

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In the next dismantling process, we just need to remove the bolt between the body and the screen of the sunken pivot position, you can separate the screen from the body, and at the same time, its touchpad and palmrest area of the mold with the bottom motherboard It will also be completely separated from the motherboard at the bottom.

AMD 785GX chipset motherboard (

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Perhaps in consideration of cost control, we found that the Lenovo G455 laptop in the choice of AMD 785GX paired with with the SB750 southbridge at the same time, the motherboard in the workmanship of the motherboard does not have too much empty welding, but in terms of mold tooling slightly thin some.

Lenovo G455 laptop (

)

Recently, after AMD released the Vision platform, many notebook manufacturers have followed. And compared to previous entertainment notebooks positioned in the mainstream market, the Lenovo G455 offers moderate design and workmanship while keeping costs well in check.The AMD 785GX with SB750 southbridge, coupled with the Athlon II Dual-Core Mobile M320 and Radeon HD 4530 in the ?3A? platform pairing, highlights more of the performance of the The practicality of the product. And through this dismantling of the loan we also learned that, although in the Lenovo G455 in terms of materials and workmanship compared to Lenovo's previous products do not have too many advantages to speak of, but in the price range of 4,000 yuan with the same price on the market compared to the product, its products in the design of the product also production is also considered to be more conservative, and there is no obvious signs of shrinkage.