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Both graphics cards sport AMD's Barts GPU that like current circuits is made with 40 nanometer technology. As hinted by previous rumors Radeon HD 6770 will get performance that surpasses Radeon HD 5850, with both higher FLOPS and better memory bandwidth.

AMD Radeon HD 6770 (Barts XT) comes with 1280 stream processors (HD 5850: 1440) that is spread across four clusters. Even though it has fewer stream processors HD 6770 has the same amount of ROPs and a bit fewer texture units.

With an impressive GPU clock frequency of 900 MHz the card has considerably higher theoretic performance than Radeon HD 5850, 2.30 TFlops vs. 2.08 TFlops. Texture performance has increase from 52.2 GTexel/s to 57.6 GTexel/s and pixelfillrate is even higher than the current Radeon HD 5870.

Little brother Radeon HD 6750 (Barts Pro) has similar specifications but fewer stream processors and lower GPU clock frequency. With numbers positioned between Radeon HD 5770 and HD 5870 the card looks like a directy reply to NVIDIA GeForce GTX 460.

Even though AMD uses the same manufacturing technology it has managed to lower power consumption even further considering the performance it offers. Radeon HD 6770 will performance better than HD 5850 and consumes less power at load and idle, 146 watt and 23 watt respectively.

AMD Radeon™ HD 6870 GPU Feature Summary:


GDDR5 memory interface
PCI Express® 2.1 x16 bus interface
Eye-Definition graphics
Second generation graphics with full DirectX® 11 support
Shader Model 5.0
DirectCompute 11
Programmable hardware tessellation unit
Accelerated multi-threading
HDR texture compression
Order-independent transparency
Image quality enhancement technology
AMD Eyefinity multi-display technology
AMD EyeSpeed visual acceleration3
AMD Accelerated Parallel Processing (APP) technology
OpenCLSupport
DirectCompute 11

Accelerated video encoding, transcoding, and upscaling

o UVD 3 dedicated video playback accelerator
o Enhanced Video Quality features


Advanced post-processing and scaling
Dynamic contrast enhancement and color correction
Brighter whites processing (Blue Stretch)
Independent video gamma control
Dynamic video range control

AMD HD3D technology

o Stereoscopic 3D display/glasses support
o Blu-ray 3D support
o Stereoscopic 3D gaming
o 3rd party Stereoscopic 3D middleware software support

AMD CrossFireX™ multi-GPU technology

o Dual GPU scaling

Cutting-edge integrated display support

o Integrated dual-link DVI output with HDCP
o Integrated DisplayPort 1.2 output
o Integrated HDMI 1.4a with support for stereoscopic 3D
o Integrated VGA output

Integrated HD audio controller

o Output protected high bit rate 7.1 channel surround sound over HDMI with no additional cables required
o Supports AC-3, AAC, Dolby TrueHD and DTS Master Audio formats

AMD PowerPlay™ power management technology

o Dynamic power management with low power idle state
o Ultra-low power state support for multi-GPU configurations

AMD Catalyst™ graphics and HD video configuration software

o Certified drivers for Windows 7, Windows Vista, and Windows XP
o AMD Catalyst™ Control Center - AMD Catalyst™ software application and user interface for setup, configuration, and accessing features of ATI Radeon products
o Unified Graphics display driver - AMD Catalyst™ software enabling other PC programs and devices to use advanced graphics, video, and features of AMD Radeon™ products

Frostis Advance a écrit :J'dois avouer qu'après avoir goûté Visio, on peut plus s'en passer

Mortal a écrit :C'est pourtant facile de ne pas se tromper

Mortal a écrit :

Frostis Advance a écrit :J'dois avouer qu'après avoir goûté Visio, on peut plus s'en passer

J'ai toujours trouvé Visio à chier. Tu mets 2 plombes à saisir les outils, à changer, c'est chiant !

Perso, j'utilise Dia : tu as des raccourcis clavier pour tout, qui sont super pratiques, super bien pensés. Et c'est ce qu'utilise Cisco pour faire ces schémas (et tu as les icônes de Cisco dedans). Et tu as aussi des icônes un peu plus classe et modifiable.