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November 2012 |
Specifications
| Brand |
AMD |
Series
|
Athlon II X2
|
Model
|
ADX270OCGMBOX
|
|
|
CPU Socket Type
|
|
CPU Socket Type
|
Socket AM3
|
|
|
Tech Spec
|
|
Core
|
Regor
|
Multi-Core
|
Dual-Core
|
Name
|
Athlon II X2 270
|
Operating Frequency
|
3.4GHz
|
Hyper Transports
|
4000MHz
|
L2 Cache
|
2 x 1MB
|
Manufacturing Tech
|
45 nm
|
64 bit Support
|
Yes
|
Hyper-Transport Support
|
Yes
|
Virtualization Technology Support
|
Yes
|
Multimedia Instruction
|
MMX, SSE, SSE2, SSE3, SSE4a,3DNOW! Professional
|
Thermal Design Power
|
65W
|
Cooling Device
|
Heatsink and Fan included
|
Click here to return
|
|
|
November 2012 |
|
AOC introduces the 50-Series of attractive, slim monitors with clean styling and LED technology, priced to appeal to value-conscious consumers.
LED backlights contain no toxic mercury (Hg) to contaminate the environment, and offer substantially lower power consumption than traditional monitors, further reduced with user-selectable power-saving display modes and switch-off timer.
Although e2450Swh presents simple monitors with a focus on value, AOC has not skimped on display dynamics, with a vivid contrast ratio of 20,000,000:1 DCR ensuring clear visibility and vibrant images.
Outwardly, the 50-Series monitors do not look at all cheap, with a slim and rounded design that tapers to just 18mm at the top and sides. The back of the cabinet and top surface of the base feature a luxurious brushed texture. Control buttons are discreetly recessed underneath the shiny-edged screen bezel.
Digital and analogue connectors are rear-facing for direct insertion, more convenient than more common downward-pointing ports. |
|
Screen Size
|
23.6"W |
| Viewable Image Size |
598mm |
Pixel Pitch
|
0.2715(H)×0.2715 (V)mm
|
Display Area
|
521.28(H)×293.22(V)mm
|
Brightness
|
300 cd/m²
|
Contrast Ratio (typical)
|
20000000:1 (DCR)
|
Response Time (typical)
|
2ms
|
Viewing Angle
|
170/160 (CR≥10)
|
Scan Frequency
|
H: 30K~83KHz V: 55~75Hz
|
Pixel Frequency
|
148.5MHz
|
Recommended Resolution
|
1920×1080@60Hz
|
Display Colours
|
16.7M
|
HDCP Compatible
|
Yes
|
Input Signal
|
Analog RGB, DVI-D and HDMI
|
Input Connector
|
15-pin D-Sub, 24-pin DVI and HDMI
|
Power Supply
|
110~240VAC, 50/60Hz
|
Power Consumption
|
Power On: <35W(Typical), Standby: <0.5W
|
Plug & Play
|
VESA DDC2B™ & DDC2B/CI
|
User Control
|
Auto/source/Exit, Eco(DCR)/-, Volume/+, Menu, Power
|
OSD Languages
|
16 languages
|
Speakers
|
Yes
|
Safety & Regulations
|
cCSAus,CE,FCC,EPA,TUV-S,TCO5.1,BSMI,Win7,VCCI, KCC,J-Moss,e-standby
|
Wall-Mount
|
75mm×75mm
|
Cabinet Colour
|
Black
|
Mechanical Function
|
Tilt: -4°~17°
|
W×H×D (w/base)mm
|
569.7×413.9×205.1 mm
|
W×H×D (package)mm
|
625×437×113 mm |
Weight (Net /Gross)
|
4.45Kg/7.3Kg |
Click here to return
|
|
|
October 2012 |
Intel Xeon E5 processors are available in a large variety of models and
this article attempts to assist system administrators and architects by
identifying and clarifying the exact differences.
As of today, Intel has launched the following models this year:
- Intel Xeon E5-1400 (Sandy Bridge-EN)
- Intel Xeon E5-1600 (Sandy Bridge-E)
- Intel Xeon E5-2400 (Sandy Bridge-EN)
- Intel Xeon E5-2600 (Sandy Bridge-EP)
- Intel Xeon E5-4600 (Sandy Bridge-EP)
Understanding the model numbers for the "Xeon E5-xxxx" family:
- The first digit represents how many sockets are supported; where
'1' means the CPU can only be used in Single Socket motherboards, and a
'2' means it can be used in either a Single Socket motherboard or a Dual
Socket motherboard.
- The second digit relates to the actual CPU socket and package - the
number of pins - and therefore representing both compatibility and
feature support. A '2' stands for socket H2 or LGA1155; a '4' stands for
socket B2 or LGA1356; a '6' stands for socket R or LGA2011; and an '8'
stands for socket LS or LGA1567.
- The last two digits are simply the product SKU and usually the
higher the number, the faster the processor in general. The higher SKUs
will have either more processing cores or a faster clock frequency
compared to lower product SKUs. If your applications do not make use of
multiple cores, you can achieve better fitness for purpose (and save
money) by selecting 4-core models that run at a higher clock speed.
The performance/price sweet spot for most servers is probably the Xeon
E5-2400 series and E5-2600 series. On the surface their technical
specifications are very similar but in fact the E5-2400 series is
intentionally crippled performance-wise and are sold at a lower price
point compared to the E5-2600 series. Let's look at an example:
The difference is in the QPI link, maximum memory support, main memory
bandwidth and the number of PCI-Express lanes supported for add-on
cards. The Intel Quick Path Interconnect (QPI) is the link between two
Xeon E5 processors on a Dual Socket server - it replaces the old Front
Side Bus and competes with AMD's HyperTransport link. The E5-2620 has 2 x
QPI links which gives us a bandwidth of 115.2 GB/s. The E5-2420 on the
other hand has a single QPI link which gives us 57.6 GB/s - exactly
half. The main memory bandwidth is also crippled in the 2400-series - it
has a Triple Channel memory architecture (32 GB/s) versus a Quad
Channel architecture (42.6 GB/s) in the 2600-series family.
Our team provides consultancy, system design, building and testing
services to all our partners. Feel free to contact us for further
information.
|
|
|
October 2012 |
Intel Xeon E5 processors are available in a large variety of models and
this article attempts to assist system administrators and architects by
identifying and clarifying the exact differences.
As of today, Intel has launched the following models this year:
- Intel Xeon E5-1400 (Sandy Bridge-EN)
- Intel Xeon E5-1600 (Sandy Bridge-E)
- Intel Xeon E5-2400 (Sandy Bridge-EN)
- Intel Xeon E5-2600 (Sandy Bridge-EP)
- Intel Xeon E5-4600 (Sandy Bridge-EP)
Understanding the model numbers for the "Xeon E5-xxxx" family:
- The first digit represents how many sockets are supported; where
'1' means the CPU can only be used in Single Socket motherboards, and a
'2' means it can be used in either a Single Socket motherboard or a Dual
Socket motherboard.
- The second digit relates to the actual CPU socket and package - the
number of pins - and therefore representing both compatibility and
feature support. A '2' stands for socket H2 or LGA1155; a '4' stands for
socket B2 or LGA1356; a '6' stands for socket R or LGA2011; and an '8'
stands for socket LS or LGA1567.
- The last two digits are simply the product SKU and usually the
higher the number, the faster the processor in general. The higher SKUs
will have either more processing cores or a faster clock frequency
compared to lower product SKUs. If your applications do not make use of
multiple cores, you can achieve better fitness for purpose (and save
money) by selecting 4-core models that run at a higher clock speed.
The performance/price sweet spot for most servers is probably the Xeon
E5-2400 series and E5-2600 series. On the surface their technical
specifications are very similar but in fact the E5-2400 series is
intentionally crippled performance-wise and are sold at a lower price
point compared to the E5-2600 series. Let's look at an example:
The difference is in the QPI link, maximum memory support, main memory
bandwidth and the number of PCI-Express lanes supported for add-on
cards. The Intel Quick Path Interconnect (QPI) is the link between two
Xeon E5 processors on a Dual Socket server - it replaces the old Front
Side Bus and competes with AMD's HyperTransport link. The E5-2620 has 2 x
QPI links which gives us a bandwidth of 115.2 GB/s. The E5-2420 on the
other hand has a single QPI link which gives us 57.6 GB/s - exactly
half. The main memory bandwidth is also crippled in the 2400-series - it
has a Triple Channel memory architecture (32 GB/s) versus a Quad
Channel architecture (42.6 GB/s) in the 2600-series family.
Our team provides consultancy, system design, building and testing
services to all our partners. Feel free to contact us for further
information.
|
|
|
October 2012 |
|
This is the outline of the seminar given to Kamo High students on 2 November 2012.
(Hover mouse over to enlarge)
The seminar is designed to extend student’s horizon in computing and digital connectivity beyond smart phones, tablets, laptops, desktops and servers. It introduces the very small and the very powerful outside the spectrum of computing devices known to students.
The Very Small enables the realisation of getting connected anywhere, any time, and with any device. We call these very small devices mote or dust whichever is more catchable. They have been deployed in war zones previously, and are finding more applications in the city or wherever we want to have them. We can have them on pavements, highways, power and water meters, and so on. Essentially, the very small forms another network to turn the Internet into all things.
The Very Powerful helps extend the knowledge and capabilities of human mankind to a higher level covering the very large such as the universe to the very small such as molecules and atoms. We call these very powerful machines supercomputers or HPC for High Performance Computing. This seminar looks at the World Top 10 HPC, and the various applications HPC supports. Applications also include designs of physical objects as well as creation of digital films and videos. Broadly speaking, HPC is the main tool for digital content creation (practical) and digital concept creation (theoretical).
This lecture introduces and explains two technologies to students: MEMS (Micro Electro Magnetic System) for the Very Small and CUDA (Compute Unified Device Architecture) for the Very Powerful. MEMS is not new and has been widely deployed in smart phones and tablets. CUDA was first introduced in 2007 by Nvidia and has reached version 5 by the end of 2012.
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