First launched in 2013, Chieftec Navitas series of PSUs included five high-efficiency models of up to 1250 W power. This year the company has introduced four new editions to the family which are characterized by low power: 450 W, 550 W, 650 W, and 750 W. This update is called to satisfy the needs of unpretentious customers who require stability rather than records.



New Chieftec Navitas power supply units come equipped with a single +12V bus that covers 100% power. Hence, it’s possible to integrate the models into the latest system configurations. All of them correspond to 80 Plus Gold standard, achieving up to 87% efficiency in a wide range of operational conditions.


Their other peculiarities involve a fully modular cable system, the availability of a low-noise 120 mm fan, the support for Active PFC technology and all known protection features (i.e. OPP, OTP, UVP, OVP, SCP).


To continue, Chieftec Navitas GPM-450S ensures 450-watt power on +12V rail & up to …

Nvidia's half hearted established the supply of dual-chipset videoadapter GeForce GTX 690. In turn, the competing Radeon HD 7990 is seriously delayed, although previously the release for late July was planned.



According to new information, AMD will officially unveil the video card, code-named New Zealand in the second half of August. Non-reference Radeon HD 7970 X2 from HIS, PowerColor and other AMD exclusive partners will debut, apparently, even later.


Most likely, Radeon HD 7990 will be announced at the annual exhibition Gamescom (Cologne) 16 to August 19. This is one of the few Premier Advanced Micro Devices, which will take place on the European continent: usually the company prefers to organize similar events in their home countries or in countries in South-east Asia.


Radeon HD 7990 GPU is equipped with two Tahiti XT (2x 2048 shader, 2x 128 TMU, 2x 32 ROP), two 384-bit memory buses and 2x 3 GB of RAM on-board of type GDDR5. Among other things, the card will …

The variety of motherboards designed by ASRock is able to satisfy the whims of any customer group. All models are characterized by multiple useful facilities and different price ranges. This makes ASRock products a universal means for PC integration. These days the company has proudly released a dedicated motherboard, codenamed Z77 OC Formula, developed specifically for overclockers. This is the first model of this manufacturer designed particularly with overclocking facilities in mind.



Design and Integration


At first sight, motherboard ASRock Z77 OC Formula does not distinguish itself by exceptional design and layout. However, more intense look will uncover a range of peculiarities pertained specifically to this product. This motherboard is designed in CEB form-factor, since the number of integrated facilities would be scant for ATX standard. Still, fixing holes are located similarly to ATX boards, so there won't be any difficulties during its installation.


It should …