AMD Pitcairn 7800 GPU Details Unveiled

Details of AMD's Radeon 7800 cards have emerged, with the codename Pitcairn coming to the fore along with specifications and potential launch dates.

Designed to replace the 6800 series of graphics processing units (GPU), the 7850 and 7870 will likely have performance around that of the 6900 cards, while supporting PCIe 3.0 and other 7 series features. The Pitcairn chip used in each of the three cards (one 7870 and two 7850 variants, 1GB and 2GB) will be based on the 28nm process used throughout this generation of GPUs.

The specifications for each card were originally posted on EXPreview, but for an English language version, I turned to TechPowerUp:

7850

  • 20 Graphics CoreNext Compute Units
  • 1280 stream processors
  • 80 TMUs 24 ROPs
  • 256-bit wide GDDR5 memory interface (with 1GB and 2GB options)
  • Clock speeds for core/memory are 900 MHz/1250 MHz respectively

7870

  • 22 Graphics CoreNext computer units
  • 1408 stream processors
  • 88 TMUs, 24 ROPs
  • 256-bit wide GDDR5 memory interface 2 GB
  • Clock speeds of 950 MHz core, 1375 MHz (5.50 GHz effective) memory

These three cards are set for release in early March, with AMD expected to debut a fourth based on the Tahiti GPU, known as the HD 7890 later on.

With Nvidia's next-generation 600 series Kepler cards not looking to arrive until April, it better bring something special to the table or AMD's release lead could well give it a complete victory in this generation of graphics card sales.