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Compare Switch and Router

Askinas — Fri, 05 Dec 2008 06:40:32 +0000

Switch and router are often used in the Ethernet local area network. In fact, both of them have different functions.

Functions
Router has a function in layer 3 from Open Systems Interconnection layer model or has been known as Network Layer. Router is a device which has intelligence to send data package to specific Internet Protocol address. Meanwhile, switch does its function in Data Layer of layer 2. Switch will assess data and determine the Media Access Control address.

Features
Switch and Router use Ethernet protocol to send and receive data. Some switches and routers use Fast Ethernet which operate in 10 or 100Mbps speed. Router has security features, like firewall built-in and an ability to filter IP address. The switch has a mix functions between hub and bridge. Like the bridge, a switch will send data to MAC physical address. Switch is also like the hub which has many ports to connect the computer into the network.

Type
Switch and Router offer wired and wireless versions. Almost of wireless routers can be used to setup wired networks. Some new switch models even can run functions in Network Layer or layer 3 from OSI model.

Additional Information
Almost of Local Area Networks need multi access point and router. Since the router can be used as a switch, we don’t need to add the switch again. Switch is needed if the network traffic goes slower. Besides, the IP switch is usually expensive and doesn’t have application in small home networks. For small LAN networks, the gigabytes router offers high speed with cheap price.

16-Layers 400GB Optical Disc from Pioneer

Askinas — Fri, 28 Nov 2008 12:35:58 +0000

Pioneer launched again its the optical disc which is known as the super multi-layer read-only. It has 16 layers features which are separated in a disc side. The storage capacity is 25GB in every layer. Therefore, the total capacity is up to 400GB. Pioneer announced the Blu-ray Disc in the IT Month event in Taipei.

Based on High Fidelity Taiwan from Pioneer, this technology is based on Blu-ray Disc with reflective layer material. The specifications of the Pick-Up Head disc are same with BD blank disc. Consequently, Pioneer disc is also can be read by using BD player.

To development of this technology is done from 2008 to 2010. Meanwhile, the rewritable multi-layer discs will be developed in 2010 till 2012, and the 1,000GB disc will appear in 2013.
The followings are the specifications of this technology:

a. There are two kinds of capacity: 500GB for 30 layers and 400GB for 16 layers
b. Has dielectric reflective layers material
c. Offers 405nm and 0.85 PU H
d. Has 14&10nm track pitch

EVGA GeForce 9800 GTX Video Card

Askinas — Mon, 10 Nov 2008 12:11:46 +0000

The e-GeForce 9800 GTX from EVGA brings you the latest in graphics card technology from Nvidia.
9800 GTX 512-P3-N871-AR has clock speed 675MHz with 512MB of 256-bit 0.8ns GDDR3 memory with a 1100 MHz clock with an effective rate of 2200 MHz, 1690MHz Shader Clock, 128 stream processors. It featured by 70.4GB per second memory bandwidth delivering unparalleled levels of graphics realism and film-quality effects and NVIDIA unified architecture with GigaThread technology, a massively multi-threaded architecture that supports thousands of independent, simultaneous threads, providing extreme processing efficiency in advanced, next-generation shader programs.

EVGA GeForce 9800 GTX Video Card The EVGA NVIDIA® GeForce® 9800 GTX 512MB graphics card raises the performance bar by enabling full-throttle lifelike game play at intense resolutions while providing optimal power management with HybridPower™ technology. The PureVideo® HD engine delivers unmatched video and movie quality with spectacular picture clarity featuring scene-optimized color and contrast enhancement. And when coupled with nForce® SLI®-ready motherboards, provides amplified performance up to 2x in a dual SLI configuration and up to 2.8x in 3-way SLI mode. Packing more performance at an exceptional value, the EVGA NVIDIA® GeForce® 9800 GTX 512MB graphics card offers extreme HD gaming and a first-class entertainment experience.

Transcend 32GB Flash Drive TS32GJFV20

Askinas — Thu, 06 Nov 2008 12:09:50 +0000

Transcend 32GB JetFlash V20 USB 2.0 Flash Drive TS32GJFV20

Transcend introduced the JetFlash V20 USB flash drive to bridge the gap between large capacity and accessibility. If you do not already own a USB flash drive, you soon will. Based on the design of Transcend’s best selling JetFlash120, the V20 features the same shapely chassis and semi-transparent colored mid-band that glows during use. The accessible range is available at prices that do not spiral upwards with the number of gigabytes.

A-DATA PD9 32GB USB Flash Drive

Askinas — Wed, 05 Nov 2008 10:19:33 +0000

A-DATA PD9 32GB USB Flash Drive With its clean design, PD9 requires no unnecessary decoration to enhance its style. Equipped with high speed USB 2.0 interface, you can quickly access, store, and retrieve your personal data, music files, and other multimedia information. A-DATA my flash PD9 offers smart buyers like you a new choice for outstanding performance at an affordable price.