Leave it to Stanford to have not only one of the world’s top supercomputers but also one of greenest.

Bio-X2, a supercomputer cluster at the James H. Clark Center, is ranked No. 73 on TOP500’s list of the world’s fastest supercomputers. The 30th edition of the TOP500 survey was released on Nov. 12 and analyzed by a group at Virginia Tech for its own list, the Green500. Bio-X2 ranked No. 6 on the green list based on its computational power per watt of energy used.

According to Clark Center and Bio-X IT Manager Tanya Raschke, Bio-X2 — which studies “problems ranging in scale from sub-molecular to organismal and everything in between” — garnered the high ranking because of the use of Intel Quad-core Xeon processors in its Dell Poweredge servers.