Gigabyte Unveils Middle-End Radeon R7 265 OC Edition Graphics Card

Gigabyte has recently announced the release of its first graphics card based on Radeon R7 265 adapter. The Gigabyte Radeon R7 265 OC Edition comes with operational overclocking and a powerful WindForce 2X cooling system. Still, it is attributed to the middle-end products with an average performance. The model will be available for customers in late March for the recommended price of $170.



This graphics card is developed on AMD Pitcairn Pro GPU (GCN, 28 nm) that embraces 1024 stream processors, 32 ROPs, and 64 TMUs. The core runs at the nominal 1008 MHz frequency but can be overclocked to 1036 MHz margin. Video memory section is represented by 2 GB of GDDR5 memory modules (256-bit interface); they operate at 1400 MHz/5600 MHz frequency (nominal/efficient) respectively.


The Gigabyte Radeon R7 265 OC Edition requires stable and uninterrupted power, provided by the PSU of not less than 500 W efficiency. The connection with the unit is realized via one 6-contact power socket. …

Intel is preparing a new motherboard on chipset Z77 and Z75

Intel Corporation has a rather wide range of motherboards for processors Core i5/i7-3000 (Ivy Bridge), but, nevertheless, continues to produce products based on chipsets 7-Series. According to reports, the release of two motherboards Intel LGA1155 — DZ77GAL-70K is planned soon with code-named Gasper Light and DZ75ML-45K (Middle Lake). The first model uses a set of system logic Z77, second — Z75. Both models will receive a certificate of Windows 8 WHQL, support of Fast Boot technology and Lucid Virtu MVP.



Model Intel DZ77GAL-70K is based on the same PCB, as the previous DZ77GA-70K (Gasper) and DZ77RE-75K (Roads End). In contrast to the board DZ77GA-70K, new doesn’t have a rich set of delivery: WiDi-compatible adapter with an antenna, Bluetooth, remote panel with two USB 3.0 ports and a mouse pad Intel Extreme Series. Due to this, it will be cheaper than DZ77GA-70K.


In turn, Intel DZ75ML-45K (Middle Lake) is a compromise models between the DZ77SL-50K and DH77KC. This …

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 …
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