Gk-104 Gk-107 and Gk-110 chips

Gk-104 Gk-107 and Gk-110 chips

GK104

NVIDIA launched the GeForce GTX 680, a single-GPU graphics card based on its GK104 performance GPU. It is reported that NVIDIA will design a dual-GPU graphics accelerator based on the same chip, which will then be positioned as an enthusiast product. Called the GeForce GTX 690, this dual-GPU solution will arrive in May.

NVIDIA's approach to the high-end segment, so far, is identical to that of AMD. It hasn't unveiled its enthusiast GK100 GPU, yet, and is instead using performance-segment GK104 for both its single-GPU high-performance graphics card, and as a dual-GPU part in an enthusiast-grade product. This buys NVIDIA plenty of time to release the GK100, unless AMD can offer a new GPU that trumps GK104 in performance, significantly.

GK110

Even as launch of the GK104-based GeForce GTX 680 nears, it's clear that it is emerging that it is not the fastest graphics processor in the GeForce Kepler family, if you sift through the specifications of the GK110 (yes, 110, not 100). Apparently, since GK104 meets or even exceeds the performance expectations of NVIDIA, the large-monolithic chip planned for this series, is likely codenamed GK110, and it's possible that it could get a GeForce GTX 700 series label.

3DCenter.org approximated the die size of the GK110 to be around 550 mm², 87% larger than that of the GK104. Since the chip is based on the 28 NM fab process, this also translates to a large increment in transistor count, up to 6 billion. The shader compute power is up by just around 30%, because the CUDA core count isn't a large increment (2000~2500 cores). The SMX (streaming multiprocessor 10) design could also face some changes. NVIDIA could prioritize beefing up other components than the CUDA cores, which could result in things such as a 512-bit wide GDDR5 memory interface. The maximum power consumption is estimated to be around 250~300 Watts. Its launch cannot be expected before August, 2012.

GK107

While NVIDIA's upcoming GK104 / GeForce GTX 670 Ti may be the talk of the rumor mill, vr-zone have some details regarding NVIDIA's entry-level Kepler GPU – GK107, including a PCB diagram:

First sampled in September 2011, the GK107 will appear in a variety of N13 GeForce M GPUs, N14 Quadro M GPUs. In addition, GK107 will also make it to the desktops as D14 or GeForce 600. There will be two variants of GK107, GK107-200 GPU in D14M2-20 and the top bin GK107-300 in D14P1-10 SKU. The GK107-300 variant will be powered by GDDR3 or GDDR5 memory, while the GK107-200 will sport 512MB of DDR3 RAM.

At first glance, the GK107 PCB and heat sink is very similar to the ones used for the GeForce GT 440 (GF108 based, which the GPU GK107 will replace) with identical dimensions. Like the GF108, the GK107 will feature a 128-bit memory interface. The heat sink + fan system will also be similar – a shroud-less heat sink with an 11 blade axial fan, albeit with minor modifications for GK107. Legacy VGA output will be dropped for 1 DVI-I DL output, 1 DVI-D or HDMI out, and a third port with either mini-DP or mini-HDMI.

The two variants of GK107 are likely to be branded GeForce GT 6×0, and may well be two of NVIDIA's final entry-level GPUs with AMD's A-Series and Intel's HD IGPs starting to cannibalize the entry-level market. PCB screenshot courtesy goes to vr-zone.

Hope this helps.