Dissi Geforce

[Italia 1]

me manca solo un pezzo ininfluente per far funziare tutto: il processore. i 4400dc ancora non sono commercializzati in italia...

[goriath]

Ma tu che sei sempre così fornito di materiale, non ce l' hai una normale mobo con procio, attrezzata con Pci-X?

[Italia 1]

io fornito ?? ma se prendo la roba da te !!! no, nessuna scheda madre con pci express (il pci-x è un'altra cosa). pensavo, tanto per metterla in funzione, di comperare un athlon64 3000+, che trovo a circa 160 euro, poi dovrei però rivenderlo appena arrivano i dual core in italia. (già 1221 ha detto che me lo prende, ma ci sto pensando). Peraltro, visto che non so se col dual core riuscirei a mettere su il bios aggiornato per il dual core (tutto chiaro ?), un procio me ce lo vorrebbe...

[goriath]

No aspetta io per pci-x intendevo proprio l' express (era un modo per abbreviare, ma non credevo che in realtà avevo scritto un' altra cosa). Sto pci-x vero è proprio non sapevo neanche che esistesse:o

[Italia 1]

pure io pensavo fosse l'express, invece dalle caratteristiche di alcune schede sembra che non sia...

[goriath]

Probabilmente un po OT ma apro ugualmente questa parentesi, dato che stavamo parlando proprio del PCI Express; in questo modo chi stesse leggendo ed eventualmente fosse confuso può schiarirsi le idee...

From osronline.com

PCI Express, PCI-X and other mysteries

It's like the people in the PCI SIG have lost their freakin' minds.

We poor driver writers (not to mention poor civilians in the the marketplace) are supposed keep track of  such esoterica as PCI V2.2, PCI-X 533, and PCI Express x16 and actually understand something about the differences?  Like, these guys couldn't have devised names that sound just a little more unique than "PCI-X" and "PCI Express"?  I think they shoulda stuck with the name 3GIO while they had it.  But noooo... it had to have "PCI" in it, didn't it.  Just so we wouldn't get confused, I suppose.

Well, if you're as confused as I am, here's the quick run-down about what these new standards are.  I've also provided you a really good link at the bottom of this article to an excellent, readable, paper on PCI Express that I highly recommend you read.

PCI -- Also annoyingly called "Conventional PCI" (like there's an unconventional version?).  This is good old 32 and 64 bit PCI that you've come to know and love. The PCI spec has been undergoing a significant set of changes over the years to try to keep pace with speed and system advances. One thing you probably haven't noticed (and don't care about unless you're a hardware guy) is a change from 5V signalling to 3.3V. The spec to which vendors are implementing now is PCI V2.2;  There are a PCI V2.3 and PCI V3.0 already defined.  Are you asleep yet?

PCI-X -- The PCI SIG likes to call this "High performance, backward compatible PCI for the future" which just means that the PCI SIG is not lacking marketing people.  PCI-X uses all the same connectors and stuff as "conventional" PCI. The transfer speed is indicated by the goofy moniker added to the end, as in "PCI-X 66" (which supports a 66MHZ clock rate) or "PCI-X 133" (which supports a 133Mhz clock rate).  Because the data is transfered in parallel, either 32 or 64 bits at a time (or even 16 bits at a time, don't ask), this means that PCI-X 133 offers a bandwidth of 1.0GB/second, and PCI-X 533 could offer a bandwidth of 4.3GB/second.  That's all theoretical, of course.  If anybody ever builds a system that supports PCI-X 533, drop me a line, OK?

PCI Express -- This is an entirely new bus architecture, previously known by the name "3GIO."  It's got new connectors and everything.  It even defines a new PC Card (PCMCIA) standard called Express Card.  How different is PCI Express from stuff that came befoer it?  Well, for one thing, it performs serial data transfers and it starts with a base transfer rate of 2.5Gb/second.  Data is transfered in packets, and effectively routed via a switch.  Transfers are bi-directional, so data can flow to and from a device simultaneously.  Since data is switched, more than 1 device can be transfering at the same time.

What's even more fun about PCI Express is that cards can utilize as many as 16 transfers in parallel, thus providing (are you ready for this??) up to 8GB/second total throughput (4GB/second in each direction).  These parallelized serial transfers are what are referred to as "PCI Express x8" (pronounced "by eight", by the way) for 8 parallel bit streams or "PCI Express x16" for 16 parallel bit streams. And, here's some cool news: AGP is being replaced with x16 PCI Express connections.


Articolo di Hector J. Rodriguez

[Italia 1]

c'avevo ragione allora... ma il pci-x chi l'ha mai visto

[Italia 1]

Yoooo !!!!! la 6600 non scalda quasi per niente !! è perfetto sto dissi !!!