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 …

Gigabyte Shows Off a Bespoke GTX 970 Graphics Card

Gigabyte has intrigued its fans by the design of an unusual videocard – the GeForce GTX 970 (GV-N970TTOC-4GD). It is based on Nvidia GM-204-200-A1 GPU (Maxwell) but with overclocked frequencies. The core operates at 1101 MHz/1241 MHz instead of etalon 1050 MHz/1178 MHz. The GPU is accompanied with 4 GB of GDDR5 memory (256-bit bus) that runs at 7010 MHz efficient clock frequency.



Gigabyte GeForce GTX 970 is distinguished by the implementation of Twin Turbo Fan cooling system. It consists of three copper heatpipes with direct touch technology, an aluminum heatsink, and a radial-flow fan; the latter grasps air from both sides of the adapter due to the shortened PCB design.


As a result, the airflow increases by 24%, whereas the cooling effect enhances by 29%. Thanks to this, the card is thought to be an optimal solution for Nvidia SLI configurations.


It should be noted that this graphics card boasts a high-quality hardware base – Ultra Durable VGA. A set of external …

SilverStone Replenishes Its Nitrogon Series with Two Coolers

SilverStone, a Taiwanese manufacturer of high-end cooling solutions, has recently launched two new coolers codenamed NT01-PRO and NT06-PRO. Both models replenish the Nitrogon series and distinguish themselves by utmost compatibility. Hence, this couple is able to cool down practically all CPU systems developed by AMD and Intel, due to the support of sockets AM2, AM3, FM1, FM2 (AMD) and LGA775, 1155, 1156, 1366, and 2011 (Intel).



Coolers NT01-PRO and NT06-PRO consist of a copper-nickeled base, six heat pipes (6 mm each) and single-section aluminum heatsink. The first model NT01-PRO is delivered without nominal fans and features 140x97x120 mm dimensions. The customer gets the right to decide which fans, 70 mm or 80 mm, will provide more cooling effect to CPU. This cooler will benefit the most if integrated on the rear or top panel of PC chassis.


The second model NT06-PRO features 140x82x139 mm and is delivered with a single 120 mm fan. Its rotational speed is monitored by …
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Registered at: 19 November 2011, 20:12
Last visit: 19 November 2011, 20:12