On Mon, 2009-03-09 at 12:41 -0600, Petrus de Calguarium wrote: > As memory requirements for 64-bit are anywhere from 50-100% greater and > the only appreciable difference is a "psychological" performance boost, what > REAL benefit is there, actually? It's not psychological, it's just not noticeable in most regular operations. Actually, most people wouldn't notice if you replaced their CPU with one which was twice as fast (or, as the BOFH knows, half as fast...), most of the time, because very few of the operations most people do day-to-day are remotely CPU-bound. A few years ago I was running a 2.4GHz (Pentium 4-era) Celeron as my desktop. The CPU fan gave out, so the CPU throttled itself down to 800MHz and kept running. I didn't notice for a fortnight. The most common CPU-bound operation in our world, I guess, is compilation, and you would notice a definite improvement in speed there, running x86-64 vs x86-32 - not huge, but noticeable. Certain database and I think scientific operations that are CPU-bound also derive a significant benefit. It depends on whether the code can take advantage of much bigger registers, AIUI. -- Adam Williamson Fedora QA Community Monkey IRC: adamw | Fedora Talk: adamwill AT fedoraproject DOT org http://www.happyassassin.net -- fedora-test-list mailing list fedora-test-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-test-list
