Actually, it depends on whether we're talking about a SPARC 4/110 (older VME beastie) or a SPARCstation 4 model 110 (newer pizzabox, cut-down version of SS5). They're two VERY different animals. I think the old 4/110 actually used 256K or 1M 30-pin SIMMs. The SPARCstation 4 certainly uses something else! --James