EDIT: My post bellow does not apply much anymore in this thread, since it's now possible to buy 2670v1 C1/C2 Xeons very cheaply on all auctions around the world (60-70 dollars for each). Read the whole thread to form full opinion ]
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You are building these or buying already built from someone ? It's unclear from your post what are you actually intending to do/get regarding source.
Because they're not in the same price bracket if you were to build them, even single E5 2670 ( "v1", basically original Sandy-Bridge E, ) would still hold value comparable to i7 like 5820k.
Of course, for workstation, i7 that can be clocked into 4.5Ghz makes better candidate for single-threaded tasks than 2.5Ghz of 2670, but then again, even with overclocking of i7, 2P 2670 will be faster in multi-threaded tasks like rendering.
Regarding Passmark (probably from cpubenchmark.com ? ) scores that you quote, those translate well. (But Cinebench R15 scales better)
Sandy Bridge-E isn't that old (it's 2012 architecture) and the increase in architecture since wasn't drastic (Ivy Bridge +8, Haswell + 5perc. roughly increase for same clock).
T 2P xeon would make better rendering workhorse, but in the latter, Haswell-E i7 overlocked makes better candidate for single-core intensive tasks as workstation
« Last Edit: 2016-06-06, 17:33:28 by Juraj_Talcik »
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