From Daily Tech

It's not easy being green, but NVIDIA is preparing its counter-punch to AMD's 6000 series

The second chapter of the DirectX 11 wars may soon be written.

AMD is in the process of refreshing its 40 nm Evergreen GPUs, with a new family of GPUs dubbed "Northern Islands".  The first Northern Islands hardware -- the Radeon HD 6850 and Radeon HD 6870 -- has launched, belonging to the budget-friendly Barts subfamily.

A dizzying array of other product subfamilies are also reportedly incoming -- Antilles, Caicos, Cayman, Turks, Blackcomb, Seymour and Whistler.  The one to probably keep your eyes on most closely is the Antilles series, AMD's high-performance line.  AMD's aims for single-GPU supremacy rest on the Radeon HD 6990, an Antilles card set to launch before the end of the year.

NVIDIA was late to the gate during the last round, and its numerous 400 series delays ultimately cost it the lead in the discrete graphics market.

This time around NVIDIA hopes to counter AMD, much more quickly as it is reportedly preparing to release the Geforce 500 series, its own 40 nm refresh of the Geforce 400 series.

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