Geyser-1: a MIPS R3000 CPU core with fine-grained run-time power gating. - Daisuke Ikebuchi; Naomi Seki; Yu Kojima; M. Kamata; Lei Zhao; Hideharu Amano; Toshiaki Shirai; Satoshi Koyama; Tatsunori Hashida; Y. Umahashi; Hiroki Masuda; Kimiyoshi Usami; et al. (ASP-DAC, 2010)

Geyser-2: The second prototype CPU with fine-grained run-time power gating. - Lei Zhao; Daisuke Ikebuchi; Yoshiki Saito; M. Kamata; Naomi Seki; Yu Kojima; Hideharu Amano; Satoshi Koyama; Tatsunori Hashida; Y. Umahashi; D. Masuda; Kimiyoshi Usami; et al. (ASP-DAC, 2011)