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Not much on ECC from intel, is there?<br>
<br>
Brace yourself for Xeon pricing; <br>
e.g: octa-processor E7-8890-v3 (12-core) .. usd$ 7,174 !<br>
<br>
For intel, a coupla notes:<br>
- Skylake CPUs (Lga1151) all gots VT-d (virtualisation optim) in
100series <br>
- Haswell is still around - may find bargains<br>
- Broadwell is mainstream - mature?<br>
- looks like it's back & forth (&back&forth) between <br>
(say..) Broadwell CPUs and Chips, until you find the pairing you
want, <br>
THEN go looking for mbrds based on that chipset, <br>
AND which implement your features. <br>
<br>
- - - - <br>
<br>
With AMD .. waayyy easier. <br>
Survey FX/Am3+ mbrds, and then .. pick a Bulldozer. <br>
Dunno much about Opteronions. <br>
ECC is clearly documented as supported by CPUs, so just make sure
mbrd implements that.<br>
<br>
..and.. at these upper classes, is DualChannel assumed? <br>
Make sure mbrd offers it.<br>
Your workstation's data-width ('swath') to/from RAM <br>
"don't need no steenkin' zipper-merge"<br>
<br>
Many but not all CPUs come with HeatSink/Fan kit. <br>
TDP (Thermal Design Props) are all encouraging. <br>
AMD is 32nm tech, but still needs serious cooling. <br>
AMD supplies cooling kit on (only?) three of their mid-upper
'dozers. <br>
intel's modern CPUs are 22nm (and 14nm!squint!), but again, gotta be
cooled right. <br>
Many models will push that pesky 3gHz 'barrier'<br>
<br>
I would like to bet you a beer you will find worthy candidate mbrds
in uATX, <br>
and worthy boxen in that format, w/ adequate space, therein, <br>
to warm up your sandwiches.<br>
<br>
jd<br>
<br>
Oh.Yes: Parity was an extra 9th-bit chip, in DIP days. On write, the
9th-bit would be made to agree' with the byte's being odd or even.
If a read cycle showed any dis-'agree'-ment, we'd be better off ..
half the time. <br>
IBM had some purdy schmaart dudes. If they want to save us half our
Time, we should be grateful. <br>
Parity survived into SIM (&SIP) "module'/'panel'days. <br>
Later in that SIM aeon, around the time of [Nibble+Nibble+Parity]
SMT DIPs on each SIM, it became ..uhm.. expedient to install a
simple logic trick-chip (instead of a real bitwise chip), to calc
the SIM's parity on any read, and present that to the eager,
expectant mbrd parity guts. <br>
On write, of course, it was still told what to remembory but .. what
were we talking about? <br>
<br>
Oh, Yes. I think them was days of "fast page" and EDO and paying a
bit more for 70ns MT, man, <br>
but not for 70ns EDO .. long story, man. <br>
<br>
We were incensed when SDRAM/sdimm came along and it don't got no
parity, man. <br>
<br>
Mere parity was a laugh to VAXmen. man. <br>
<br>
Macs no likey (any kinda) parity sims, I learnt. Yet them fruity
8bit sims were always more shekels.<br>
<br>
Go figure. <br>
<br>
_ _ _ _ _ _ _ _ _ _ _ _ _ <br>
<br>
<div class="moz-cite-prefix">2017-01-29 12:00 PM,
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<pre wrap="">Today's Topics:
1. Re: new ECC computer options (Trevor Cordes)
2. Re: new ECC computer options (Trevor Cordes)
3. Re: new ECC computer options (Kevin McGregor)
4. Re: new ECC computer options (Hartmut W Sager)
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