rado <rado@xxxxxxxxxxxxxxx> wrote:
> lately...memory has been bugging me!!! kinda dwell on
> it...even thinking ecc registered even w/the new chipkill
> tech would be best...
> ...
> today I call Mach Speed Tech back and ask him bout which
> memory he suggests for that board...I told him I wanted
> ecc...He tells me nope! wow..He stated, only if the board
> is a rated "server" motherboard should I use ecc...
> I told him I say...I am using this board as a server ...
It's not the mainboard. It's the processor.
The memory controller is on the _CPU_, _not_ the mainboard or
its chipsets. There are literally 368 traces on a
Socket-939/940 mainboard to its DIMMs -- 2 sets of 184-pin
DDR.
AMD Socket-939 uses Unregistered
AMD Socket-940 uses Registered
AMD Athlon 64 are configured to use non-ECC
AMD Opteron are configured to use non-ECC or ECC
So if you want unregistered ECC, get a Socket-939 Opteron
If you want registered ECC, get a Socket-940 Opteron
If you want to use unregistered, non-ECC, get Socket-939 A64
The BIOS/POST/ACPI is going to be so configured,
respectively, on Socket-939 and 940 mainboards, depending on
what CPU is inserted. There may be "hacks" to support
otherwise on some mainboards, but I seriously doubt it is
well supported/reliable.
AMD is very anal on this product alignment.
> didn't care...I guess this is a low end board or
whatever...
No offense, but obviously. ;->
You don't use desktop mainboards for servers.
It's the reason why I won't buy a Sun SunFire X2100 either.
> only thing I know is that Mach Speed is the only
> MB around that gives a lifetime warranty but so what...
I typically _avoid_ TigerDirect for various reasons.
Their overmarketing of crap is a big one. ;->
> so that was my point and I thought maybe some of y'all
might
> find that interesting as I did...
> Don't use ecc memory...Wow!!! blew me away!
Not if you know the first thing about how Athlon 64 and
Opteron differ from AMD's strategy. ;->
Furthermore, many Intel desktop chipsets/CPUs do _not_
support ECC either. But with AMD, it's the CPU itself --
*NOT* the mainboard.
> I wanted y'all to hear this
Actually, you're just introducing false
assumptions/information.
For servers, use AMD Opteron. They have Socket-939 single
socket (including dual-core) versions now that can use
lower-costing, unregistered, ECC memory.
--
Bryan J. Smith Professional, Technical Annoyance b.j.smith@xxxxxxxx http://thebs413.blogspot.com
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*** Speed doesn't kill, difference in speed does ***
