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a 32-bit [https://en.wikipedia.org/wiki/Mainframe_computer mainframe computer], member of the [https://en.wikipedia.org/wiki/English_Electric_System_4 English Electric System 4] and since 1968 [https://en.wikipedia.org/wiki/International_Computers_Limited ICL 4] series, derived from the [https://en.wikipedia.org/wiki/RCA_Spectra_70 RCA Spectra 70], an [[IBM 360]] clone. The IBM 360 compatibility made it particularly attractive to customers in the [https://en.wikipedia.org/wiki/Soviet_Union Soviet Union], as the sale of IBM computers was politically sensitive and commercially restricted during the [https://en.wikipedia.org/wiki/Cold_War Cold War] <ref>[https://en.wikipedia.org/wiki/International_Computers_Limited#English_Electric_LEO_Marconi_.28EELM.29 International Computers Limited - English Electric LEO Marconi (EELM)]</ref>. Computer speed was 0.280 MWIPS on Whetstone benchmark <ref>[http://www.roylongbottom.org.uk/whetstone.htm#anchorICL Whetstone Benchmark History and Results]</ref> and 368 KIPS on Gibson Mix benchmark <ref>[http://www.roylongbottom.org.uk/whetstone.htm#anchorICL Computer Speeds From Instruction Mixes pre-1960 to 1971]</ref>. The cost of the computer in 1968 was 600 thousand pounds <ref>The European Computer Users Handbook, 1969, p. II/21</ref>.