NVIDIA Geforce GTX680: New "Kepler" chips officially revealed, specs detailed

Computers, Gaming, Tech Digest news

gtx-680.jpgNVIDIA have revealed their first long-awaited “Kepler” GPU, detailing the specifications of the Geforce GTX680 and Geforce GT640M for laptops.

Built using TSMC’s 28nm process node, it’s the company’s “step-up” technology from the Fermi architecture they launched two years ago.

Looking first at the GTX680, it comes with 2GB of 256-bit GDDR5 memory, with 1,536 cores running at a base clock speed of 1,006MHz, boosting to 1,058MHz under intense loads. The card’s TDP maxes out at 195W, with the card requiring two six-pin power connectors.

Though the reference “Boost” frequency of the card is set at 52MHz, there’s expected to be a fair bit of room for SKU’s to play about with there, allowing them to set even more impressive clock speeds. Enthusiasts will have plenty of fun tinkering around it would seem, making each blade of Skyrim grass look that fraction better!

NVIDIA also revealed the Geforce GT640M for laptops, but we won’t truly now how useful they are until we get their specs paired with those of the Intel Ivy Bridge chips. Till then, we know they’re packing 394 cores at 625MHz, backed by 2GB of GDDR3 or GDDR5 memory.

There’s a fair bit riding on the success of NVIDIA’s Kepler GPUs, following rival AMD’s succeful launch of the Radeon HD7900 series at the back end of last year. With the GTX680 landing at £420, it’s putting itself in direct competition with the equally-priced HD7970, AMD’s top-end offering.

Gerald Lynch
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