Modular Power Supply 650W Chieftec A80

Evaluating the effectiveness of modern computer power supplies, the most attention is paid to their coefficient of performance (COP) at a given load — usually means of 20%, 50% and 100%. At the same time, not less important requirement, established by standard 80PLUS should be considered. That means — the preservation of this level of performance for all occurring in the world supply voltage variations, that is in the range of 100-240 V.



The standard rules of 80PLUS at different levels (Basic, Bronze, Silver, Gold, Platinum, etc.) are performed for two voltage 115 V and 230 V. In both cases, the normalized PS should show the efficiency of not less than specified for each category level. Not usual power supply CTG-650C model of the new A-80 series from the Chieftec company is interesting in that it has officially claimed efficiency of 85% or more, but only for nets 220-240 V.


As the advantages of such solution can immediately be noted a lower price, due to less stringent …

Greeting Small-Sized HIS R9 270 iCooler Boost Clock 2GB GDDR5 Graphics Card

The middle-end lineup of HIS’ proprietary graphics cards has been refilled with a new small-sized model: the R9 270 iCooler Boost Clock 2GB GDDR5. It features 190x125x45 mm dimensions and maintains an etalon clock frequency template. Hence, its price won’t differ too much from the recommended one. The new-comer boasts a bright design with a blue PCB and light-blue fan blades. Despite the appurtenance to the middle-end segment, the card is able to demonstrate quite an appropriate performance.



As seen from the codename, HIS R9 270 iCooler Boost Clock 2GB GDDR5 is equipped with 2 GB of GDDR5 video memory. The latter employs 256-bit interface and runs at 1400 MHz (nominal)/5600 MHz (effective) frequency. The heart of the card is AMD Radeon R9 270 GPU (28 nm, Curacao Pro architecture) with 1280 stream processors, 80 TMUs, and 32 ROPs. Its basic clock frequency makes up 900 MHz, while on overclocking this index rises to 925 MHZ.


The connection with PC displays might be …

Monitor Envision H2776MHAL (MVA Panel) Review

Envision can’t be called a well-known brand label, though it enters into the group of companies headed by Gigabyte. Despite this fact, the manufacturer tries to offer its potential customers only worthy and outstanding products. Let’s have a look at one of its latest developments – monitor model Envision H2776MHAL.



General Specifications


The first two things that catch the eye in monitor Envision H2776MHAL are display dimensions and panel type. The display features 27 inch dimensions, 16:9 aspect ratio, and 1920x1080 pixels resolution. The model is based on MVA panel type equipped with a power-saving LED backlit. Its response time equals to 12 ms. The integration of such panel is thought to provide for the highest image qualities which are manifested through the following parameters:

— display brightness: 300 cd/m2;

— viewing angles: 178/178 degrees (down and across);

— contrast: static – 5000:1, dynamic – 50 million to 1;

— number of …
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Registered at: 06 October 2012, 02:33
Last visit: 06 October 2012, 02:50