Radeon HD 7900 pictures and specifcation with 384-bit bus

Is this the first time after five years that AMD or lets say AMD/ATI put more than 256-bit wide memory interface bus back to its graphic cards? Yes this could be true after we analysed some leaked pictures showing the upcoming 28 nm Radeon HD 7900 "Tahiti" engineering sampler today at beyond3d forum.

The graphic cards spotted are not the final product, but have the final red PCB design, according to these leaked pictures the next Radeon HD 7900 or HD 7990 codenamed "Tahiti" will have 12 memory chips (the 12th one is for sure next PCI-E port) which if its true confirm the news and result of 384-bit wide memory interface bus between the video memory and the "Tahiti" GPU, also leaked specifications say that the video memory will be 6 GB of GDDR5+ leading to 576 GB/s memory bandwidth speed,
we can grab more info from the pictures, the card use 6+8 pins configuration but it can require dual 8 pins in the future depending on the brands manufactures .

Take look at the pictures :

Radeon HD 7900

Radeon HD 7900
Leaked specification of the Radeon HD 7990:
  • Dual graphics processing units
  • Compute Power: 12.16 TFLOPS (single-precision), 3.04 TFLOPS (double-precision)
  • Process Technology: First-generation "gate-first" 28 nm High Performance Process
  • Stream Processors: 2x2048
  • Texture Units: 256 (2x128)
  • Texture Fillrate: 243.2 GTexel/s
  • Color ROP Units: 2x32
  • Pixel Fillrate: 91.2 GPixel/s
  • Z/Stencil ROP Units: 384
  • Memory Bus Width: 384-bit
  • Memory Type: 6 GB GDDR5+
  • Memory Bandwidth: 576 GB/s
  • Bus Interface: PCI Express 3.0
  • Board power (Idle/Load): 30W/300W
  • Form Factor: Dual Slot
  • Cooling Solution: Fansinks with Vapor Chamber
  • Graphics API:
    • DirectX 11
    • OpenGL 4.2
    • OpenGL ES 2.0
  • Accelerated Parallel Processing:
    • DirectCompute 11
    • OpenCL 1.1
  • AMD EyeSpeed: Yes
  • AMD Eyefinity: Yes
  • AMD HD3D: Yes
  • Unified Video Decoder 4.0:
    • Multi-View Codec (MVC)
    • HEVC
    • MPEG-4 AVC/H.264
    • VC-1, VC-2
    • MPEG-2
    • DivX/XviD
    • WebM
    • Flash
  • AVIVO HD: Yes
  • Display Outputs:
    • Dual-link DVI
    • Mini DisplayPort
    • HDMI 1.4
  • AMD CrossFireX: Quad GPU Scaling
  • AMD PowerPlay: Yes
  • Ultra Low Power State: Yes
Radeon HD 7900 pictures and specifcation with 384-bit bus Radeon HD 7900 pictures and specifcation with 384-bit bus Reviewed by Maherr Live on Thursday, December 08, 2011 Rating: 5