Tbf it does happen to most of us. At one stage, it was advisable to install the same amount of memory in each channel in ddr system so that they could both be written/read to at the same time. I didn't know that there an update to this to allow asynchronous mode on memory channels so you could still have combined read/write regardless of different memory sizes. I swore blind that this was wrong until i checked and found out about the updated spec.

In reply to a post by zyborg47:

That is true, but not sure how Cat 5E or any Ethernet cable can change, maybe made with better materials. The technology is still the same as it was.
Maybe I am looking at this wrong.

Yup. The cables are classified by how much bandwidth they can carry, RF bandwidth. 5e is certified for 100 MHz. You look at a cable alongside category it may have a number with MHz at the end. It doesn't care what goes into that 100 MHz, it's a cable. As long as signal to noise is okay it doesn't matter.

A while back your phone line only carried dialup. Then it carried ADSL. Cable didn't change, use of it did.

To add to this thread, I setup my new NUC last night, and used the cable I had to hastily find for the Cityfibre install, this is at best a cat 5e cable and its connecting at 2.5gig.

In reply to a post by zyborg47:

In reply to a post by jchamier:

Because things change. New ideas appear and older cable standards are reviewed to see if they can be used for the new idea. So check the date on technology information; if not dated assume it WAS correct and we now know more.

It doesn't mean the source was wrong when written.

That is true, but not sure how Cat 5E or any Ethernet cable can change, maybe made with better materials. The technology is still the same as it was.
Maybe I am looking at this wrong.
The best way is to suck it and see. As I said if this was my house I would put fibre in the walls and under the floors and have fibre sockets. Not because i need it, but because it is the way to go.
One reason why my partner did it, she decided it was the best way to go, even if a bit pricy.

This is an older thread, so apologies all, but I'm catching up on some forums posts whilst I've been absent here aa few months.

Unless you live/work in the networking space, then I'd expect when the IEEE decided, in the middle of the last decade, that they needed to bump up Ethernet speeds on *existing* cabling infrastructure, the news didn't exactly make the front page of the newspapers here (or anywhere!). So fair enough that it may have passed you by.

As pointed out its now 8 years since that 2.5G/5G 802.3bz standard was ratified by the IEEE and it was specifically created, in their words:

"...to meet growing capacity demands on more than 70 billion meters of Category 5e and Category 6 cabling"

In other words, there's a metric shedload of 'legacy' Cat5e (which in itself is now about 30 years old!! as far as standards go, not IEEE but TIA/EIA and the equivalent Class D in ISO-land) cable out there, we better leverage this. They did so pretty quickly actually and the standard 'only' took them 18 months to get stamped up from inception. Not bad, it usually takes far, far longer to get agreement and buy in on any standards stuff.

So yeah. Nothing at all about the existing installed base of cabling was changed - they literally, as they saying goes, just changed the bits that hang off the ends 😅

Edited by Pheasant (Sun 20-Oct-24 09:22:33)