An official introduction of a new graphics card from AMD, entitled Radeon HD 7790, has been settled into a dedicated press briefing. Within the framework of this briefing, the company not only gave a detailed description of a long-awaited product but also divulged a comparative performance analysis with its main rival’s adapter – Nvidia GeForce GTX 650 Ti. Therefore, AMD Radeon HD 7790 graphics card belongs to mainstream items and is targeting a wide range of customers. It is based on AMD Bonaire GPU with AMD GCN architecture developed under 28 nm technological process. The GPU consists of 896 current processors, 14 computing blocks, 56 texture blocks, and 16 ROP blocks.



Video memory subsystem comprises 1 GB of GDDR5 memory type, employing 128-bit bus. Its nominal clock frequency equals to 1500 MHz, while effective frequency makes up 6000 MHz. The overall efficiency level of this adapter is estimated at 1.79 TFLOPS; this index is twice larger than the one recorded with AMD …

Biwin America, Inc., a global manufacturer of solid-state drive solutions for client and corporate needs, has officially announced the release of 2.5-inch SSDs with slim-profile casings. It should be mentioned that decrease in casing dimensions touched upon all 2.5-inch products and series manufactured by the company, including Smart, Pro and Elite Series with SATA 3 and SATA 2 interfaces, as well as Drive NX and NuvoDrive PX Series with SATA 3 interfaces.



Previously all SSDs were developed in 9.5 mm-thin casings, but the current modifications allowed Biwin to decrease the dimensions to 7 mm. This is twenty-six percent less than with preceding models. Hence, slim-profile SSDs are applicable in more compact devices; they are destined to be installed in 1U and 2U server stands. This is called to increase the deployment capacity of the server without sufficient investments. Biwin 7 mm SSDs casings are made of black anodized aluminum to ensure fail-proof characteristics of the …

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 …