แสดงบทความที่มีป้ายกำกับ Memory แสดงบทความทั้งหมด
แสดงบทความที่มีป้ายกำกับ Memory แสดงบทความทั้งหมด

วันจันทร์ที่ 2 เมษายน พ.ศ. 2555

Laptop selecting Guide, Part 2 - Memory

How much do you need? It greatly depends on what are you going to do. As a rule of thumb the minimum requirement for flat run -- 1 Gb for Windows Xp and 2 Gb for Windows Vista. They say Linux requires less, but applications under Linux (browsers, office suites, mail clients, etc...) eat roughly same number as windows applications, so for Linux laptop at least 1 Gb is also preferable.

Speed. As processors, Ram has speed too. Most contemporary laptops have memory with 667 Mhz frequency. Getting 800 Mhz is maybe useful if you have a very strong processor, otherwise you won't get doing benefit, because processor itself will be the bottleneck. 1066 Mhz is currently an overkill and you won't consideration a doing difference between 800 Mhz and 1066 Mhz. Sometimes speed specified not in Mhz but in numbers like Pc2-5300. For your data 4200 means 533 Mhz, 5300 means 667 Mhz, 6400 means 800 Mhz and 8500 means 1066 Mhz

Netbook Linux

What's the difference between Ddr2 and Ddr3? Ddr3 can support much higher frequencies (but you remember that even 667 is sufficient for you). Someone else advantage of Ddr3 is about 30% less power consumption comparing to Ddr2. Less power consumption is good for laptops -- means longer battery life and less heat, but it's not authentically a deal breaker.

Shared Ram. If your laptop has an integrated video card (almost all laptops under 00 Cad have integrated video cards) then real Ram which applications can use will be less than specification says, because video card will use some of it for visible processing. For example, if you have a laptop with 1 Gb and integrated video with 256 Mb, then actual ready number for applications will be 768 Mb and not 1 Gb.

Cap. 32 bit doing systems can not apply more than 3 Gb, so if you are buying a laptop with 4 Gb or more, make sure it runs a 64 bit doing system.

When choosing a notebook, pay concentration to how many ready memory slots does it have. It is cheap in our days and if laptop you are inspecting is good, but lacks "brains", ready slot will allow you to authentically growth it to desired size.

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วันอังคารที่ 7 กุมภาพันธ์ พ.ศ. 2555

Processing, Memory Capacity of Car Pcs Get a Boost

Despite limited R&D due to pricing challenges, car Pc makers pursue hardware improvements.

China car Pc manufacturers continue to invest in hardware enhancements to stimulate inquire and compete with features-rich automotive electronics. They, however, try to strike a equilibrium in the middle of execution upgrades and cost adjustments to keep prices affordable.

Netbook Linux

Models that adopt the Intel 945Gc chipset and Atom 230 processor remain beloved because of their low quotes. Makers are promoting such versions to articulate sales, but they also offer units with dual-core Atom 330 Cpus for faster processing capability. Several turn to the 1.66Ghz Atom D510 and the 1.8Ghz Atom D525, which run Os more efficiently than low-frequency counterparts. These, however, increase the price.

Memory capacity is someone else vital R&D consideration. Many China makers have upgraded car Pc models to 1 and 2Gb Ddr2 from 512Mb to add value. Most fellowships can offer 80 to 160Gb Hdds. Solid-state disks or Ssds are also ready to address the inquire for good shock resistance.

Acknowledging that the goods is still a secondary line, manufacturers admit the need to build technology and price competitiveness. Local enterprises are therefore holding in-house R&D alive through regular upgrades despite limited inquire and cost concerns.

Major players such as Leso International Ltd, for instance, use high-priced processors and chipsets to cater to the upscale and function-conscious market. The supplier's newest car Pc series is based on the Nvidia Mcp7A or Mcp79-Ion. Aside from the Atom 330, the chipset has onboard GeForce8100 illustrated core, Realtek Alc 662 sound card and Realtek 8111C Gigabit Ethernet controller. Its built-in Bluetooth adopts 802.15 Wpan.

Leso also offers models with 8Gb Ssd as an alternative to its Hdd versions. The maker started to promote the use of the previous in 2010 when the cost of the component declined. Prices of Ssd-based car Pcs, which remain higher than Hdd alternatives, however, hamper wide adoption.

Shenzhen Joyous Electronics Ltd, meanwhile, is looking at extending goods usability to compete with car Dvd players. The victualer designs its units with portable device-level Cpus that operate on Windows Ce.

Despite the certain outlook generated by active R&D, makers have conservative increase projections for the line. One imagine is the proliferation of less expensive, but features-laden automotive electronics gift similar functions. For a lower price, buyers can have all-in-one car Dvd players that support data and entertainment activities. Smartphones with in-vehicle kits and mounts also pose a threat because of the built-in Internet connectivity and enterprise programs. Moreover, a car Pc's movable computing ability is dependent on the local telecom carrier. Under the current network infrastructure and cost schemes,this aid incurs a higher fee.

Another factor preventing the expansion of the segment is its niche shop status and the lack of consumer following. The gadget is commonly viewed as a high-end tool for pro applications such as fleet tracking and communication management. This and the low inquire have kept furnish small, which has in turn prevented makers from reaching economies of scale that can bring prices down.

Car Pcs & prices

In-vehicle computers technically belong to the high end of the car electronics line, but the option in China consists of models for separate price categories. Entry-level versions are movable Internet gadget or ultra-mobile Pc types with Windows Ce, 256Mb to 1Gb internal memory and 2-Din structure. Some suppliers offer these as upscale in-dash Dvd players that support Gps and digital Tv. Such variants can furnish Wi-Fi or 3G wireless connectivity on top of basic word processing. Digital touchscreens with 800x480-pixel resolution are becoming beloved in this segment. Manufacturers are also releasing designs targeted at special car models.

Products in the midrange make up the mainstream. Adopting Intel Atom 230 or 330 Cpus, these come in 2 or 1-Din or box-type structures with built-in Hdds and Windows Xp or 7 installed. The last two configurations ordinarily want an added monitor and are targeted at special applications such as fire trucks, police cars or taxicabs. These need a law that can run pro software and location or communication functions. Units in the type have 1 to 2Gb Ddr2 memory, 80 to 160Gb Hdds, and Introducing the Auto Power Sequencer feature. They adapt added modules such as a Usb Wlan adapter. China suppliers can likewise combine a Dvd mechanism on request.

The 2-Din version is an upscale alternative that includes a 7in Tft Lcd or touchscreen. Local makers offer special modules to fit certain cars. Leso, for instance, has released the Win-Xp-005 and Win-Xp-006 models for the Vw Magotan and Mazda 6, respectively. These systems support Dvd, Gps, Wi-Fi, rearview, Bluetooth and movable office functions.

China suppliers source car Pc motherboards from Foxconn, Via or Msi, and touchscreens from Chimei and Au Optronics. They purchase Dvd mechanisms from domestic providers, along with Foryou, Corepine and Shinwa. Metal housings are employed for good cooling performance. goods configuration influences price directly. Entry-level models without monitors and those using Umpc or Mid-type processors and chipsets start at 0.

The 2-Din nettop or netbook version with touchscreen, Intel Atom 230 or 330 Cpu, integrated graphics controller, audio codec chip and memory is practically 0. The motherboard ordinarily matches the execution of the processor. An extra digital Tv module such as Dvb-T increases the price by to , and a Gprs network component adds . A W-Cdma unit pushes quotes up by at least , a form that has been climbing since tablet Pcs, particularly the iPad, entered mass production.

Taiwan: Upscale models suit fleet management, pro use

Increasing awareness on vehicle security and smart driving is propelling increase in Taiwan's car Pc manufacturing industry. Although basic models from the island trail the more advanced in-vehicle sailing and telematics systems, such products meet most users' requirements. Sophisticated varieties are convenient for fleet management, cargo tracking and other pro applications.

Car Pcs from Taiwan suppliers are contract units boasting moving power management and fanless thermal designs. Heat pipes and possession mechanical layouts enable good cooling.

3G communication, Gps and Wi-Fi can be added for vehicle fleet management. Manufacturers also combine 10/100/1,000BaseTx Ethernet.

Makers adopt Intel processors such as Atom, Core 2 Duo and Core I series. The dual-core Atom D525 Cpu is a new alternative.

Mainstream varieties use Vga screens and low-voltage differential signaling for dual independent displays. Ntsc and Pal video standards are accepted. For storage, Cf card slots and 2.5in Hdd brackets give buyers two options. Rs-232 and -422, and Eia-485, and microphone input ports and earphone jacks are common.

To ensure software compatibility, Windows and Linux gadget drivers and Api are supported, as are Gpio and Can bus. The last enables Can 2.0A and B. Mini Pci Express slots and Usb ports allow expansion.

Taiwan-made products comply with Ce, Fcc class B and E-Mark. Makers also meet Iso/Ts 16949 standards. The victualer base exceeds 20 players, mostly market Pc specialists capable of developing robust devices for ultimate environments.

Ibase Technology Inc.'s I-Vc5 model has dual displays and digital video recording function. The first can be used for showing digital signage in the car's covering and as an in-vehicle computer screen. The unit can join together to a 4-channel security camera to capture video and store the data on a movable Hdd.

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