Aren't all Xeons multiplier locked? I thought the only reason X58 ones were bargains was because, on X58, the base clock is actually overclockable.
Yeah see they made a mistake with X58 leaving the bus open. A mistake that sadly they have not let happen again.
They are all multi locked yes, but then so were chips like the I7 950. That's why people knew exactly what to do when these Xeons became cheap.
There are a few very, very rare Xeons out there that are ES that Intel 'forgot' to lock the bus and multi on apparently but I've never seen any actual evidence of this. Apparently some guy posted on here a while back saying he was going to be buying an unlocked X79 ES but when I asked him for concrete proof of it he went quiet..
And Intel have really, really derped the speed on these Xeons. Mine is 1.7ghz, pretty damn awful. You can lock Turbo on though, so 2ghz but yeah, compared to a 4.5ghz 5960x? you can probably imagine how much slower that is.
It's not all complete doom and gloom though. In properly threaded Mac OSX apps for example I was churning out over twice the performance of a 4670k @ 4.2ghz but for Windows and gaming like the 5960x they're pretty much useless.
And all but the ridiculously priced X79 Xeons are pants in the clock department. Most of them are set between 2-3 ghz apart from the insanely expensive models which are clocked in the mid 3s.
But yeah, overall? it's not worth holding onto X79 stuff on a hope and a prayer because sellers know what they have, it's not in huge supply or demand and so prices are stupid.
I guess you could say I lucked out buying my 8 core ES for £100 even, but I got it from a guy who built and sold hackintoshes and basically this chip refuses to work on any more than 1 core in that environment unless you use a specific method, one he obviously didn't know about so thought the chip was junk.