Radeon hd 4800 review

 

Most recently, we decided with final specifications and cost of graphics cards NVIDIA GeForce GTX 280/260, which is scheduled announcement on 17 June. By switching attention to new products from competing camps that appear on a day later. We are already familiar with the list of characteristics Radeon HD 4850/4870, reasonably claim to credibility. In addition, the drawings were studied cooling systems to assess flagrant appearance and size of future graphics chip on RV770. Now, thanks to recent publications Taiwanese and Chinese mirrors Tomshardware.tw site Chiphell.com try to move further in acquaintance with new products AMD and their appearance.

Staff members of the Taiwan site, apparently free from information non disclosure agreements (NDA), obtaining access to official presentation slides on the line Radeon HD 4800, immediately shared with the public the most interesting fragments. Promulgated quality photos accelerators Radeon HD 4870 with 1 GB of memory and GDDR5 Radeon HD 4850 with memory GDDR3, as well as excerpts from a detailed description of the merits of the series Radeon HD 4800 and the requirements for the power supply PC. All this information will complement the abundance of new photos of cooling systems graphics cards, published a forum of Chinese visitors.

Debut shots video card Radeon HD 4870 point to similarities with the cooling system that we have seen from the Radeon HD 2900 XT. The new VGA-cooler, which occupies two expansion slots and covers almost all the frontal side of the printed circuit board, equipped with lamp radiator and fan turbine types.

On the surface of the chip RV770 comes polished copper base, ensuring good thermal contact. All construction closed semitransparent plastic casing corporate red. Judging by the device VGA-Cooling and presence at the end of the lattice, the developers made it possible to release hot air outside the system unit.

Regarding the video card itself, obviously there are two ports digital DVI, HDTV-out, a pair of 6 - contact connectors for external power supply, bridges for switching mode CrossFireX. For a system with a single accelerator Radeon HD 4870 recommended power supply capacity of 500 W and above. CrossFireX configuration with two cards require no power source less than 600 W, equipped with four 6 - pin connectors.

Go to the younger models on chip RV770. The authors reference design Radeon HD 4850 proposed the use of compact odnoslotovy cooler, equipped with a copper radiator. Under his “care” is a graphic chip, memory chips and power elements of the food chain. Apparently, the developer of this cooling system is a Taiwanese company AURAS. Recall that it is engaged in the production of VGA-Cooling for Radeon HD 3850 Standard Edition.

Interface set Radeon HD 4850 fully repeats video Radeon HD 4870. Low power accelerator junior allowed to abandon one of the power connectors. For nutrition PC with a video-based graphics card Radeon HD 4850 recommended source of power from 450 W and above. In order to provide two meals accelerator mode CrossFireX, requires a minimum of 550 - W source.

On the issue of accelerators German officials expressed site Hardware-Actual. According to them, the length of printed circuit boards Radeon HD 4850/4870 is only 230 mm, which is equivalent to size graphics Radeon HD 3870 and GeForce 8800 GT, compatible with most desktop shells.

It should also dwell on slides with a list of key advantages ruler Radeon HD 4800. One of the fragments presentation demonstrates the hardware support for DirectX 10.1, compatibility with PCI Express 2.0 bus and the possibility of up to four graphics cards to work in conjunction CrossFireX. In addition, mentions the support of memory GDDR5, the availability of second-generation integrated video Unified Video Decoder 2 (UVD2), 7.1-channel sound processor, controller and HDMI HDCP-key.

Among other things, at a forum of Chinese Chiphell.com site was discovered a few more curious photos. Argued that a full-VGA-cooler serving with thermal tube, copper radiator and two contact sites is most directly related to dual-boosters Radeon HD 4870 X2, also known under the code R700.