Re: New Motherboards ECC memory and PCI-E issues


Anton Ertl wrote:
This is not about the buffering that the memory controller performs.

The difference between unregistered and registered RAM is that
registered RAM has additional driver chips on the DIMMs that allow to
have more chips on the DIMM without increasing the load on the lines
to the DIMM. AFAIK the address (and maybe the chip select) lines are
driven in that way, the data lines are still connected directly.

Since I run unbuffered ECC in a g965 (that does not perform ECC)
could THAT explain why northbridge on my Supermicro PDSBA
runs very hot or that is unrelated?

jimomuraNOSPAM@xxxxxxxxxxx wrote:
I have pretty much decided on a couple of motherboards, but there
are a couple of issues I would like to find out more about:

1. I have ECC memory on one of my current computers, and I had
hoped to have ECC on my next motherboard. I noticed that DDR2
memory with ECC is "non-buffered". I do not understand how you
can have ECC without buffering. Can someone explain this?

I think gamers care only about latency and the rest of the consumers
are way too stupid to demand ECC.
It's "well... I don't see any errors. Duh." or
"my work is not valuable enough" mentality.

Comment on ECC: I cannot understand how "consultants" have
sold computers without ECC to businesses over the years. It
is irresponsible and, I think unprofessional. As for the cost

I bought g965 instead of x975 board solely to give money to Intel
for keeping X3000 alive. I deeply regret buying a non enthusiast
board as the machine occasionally shuts down to protect northbridge
from
overheating under load (x86memtest would do it).
To Intel: connect the fscking northbridge to the cpu by the heatpipes
on the reference x995 or whatever is in the works!!!

of ECC memory, if more people bought ECC then the price would
probably fall.

2. PCI-E has been around for a while in 1X, 8X and 16X
slots (an 8X slot being a 16X physical slot but 8X support).
The 4X slots are, from what I gather, actually "new". Looking
at the PCI-E spec, 1X is actually pretty fast. But it
seems to me that there is sort of a trend to the new 4X
slot. It is unclear whether there is any physical reason
why a 16X slot cannot handle a 4X card. It appears to
me that this is a BIOS issue. So far I have not read
anything that indicates that a 16X slot can support a 4X
card. Does anyone know about this? Is it just presumed
that a 16X slot will handle all the smaller cards? If I

I think so. I don't think it's much of an issue since
beside graphics card makers hardly anyone makes pci express cards yet.

buy a board that does not specifically say this, but it
has 2 1X slots and 2 16X slots, does this mean none of those
slots will help me if I buy a 4X card someday?

The big IF is whether there WILL be any 4X cards ever.
I wonder if there are will be many 1X cards let alone 4X cards
any time soon.

Thanks for any advice on these issues.

There are some boards with 3 16x slots on the market.
If you have confidence in their northbridge cooling and
they support ECC looks like they'd be a good choice for you.

.

Relevant Pages

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