More networks+weaker signals vs. stronger signals+less networks--WHICH BETTER?

I'm using two laptops at the same time, with different wireless cards. When searching for wireless networks, one shows only a few networks available, but with pretty good overal signal strengths (the best in around 80% range); the other shows many more available networks (3 or 4 times as many), but the signal strengths are all much weaker (30% or below).

My question is: why the one that can detect more networks shows weaker signal strengths, and vice versa? Which wireless card is better?

 

Cards from different manufacturers work differently on different computers, and even cards from the same manufacturer work differently on different computers. At this time, if you mix and match manufacturers (one for the router, one for the wifi card), performance tends to be less than if you match all of the equipment. So - which card is better depends on the other hardware you are using in your wireless network.

 

Can you explain why the one with stronger signals detects less networks (and vice versa)? I thought if it can detect more networks, then it means the signals are stronger for it, no?

 

don't assume that the software that may come with any specific card or computer is telling you about every network that is 'see-able'.

If you really want to compare the tx/rx capabilities of a wireless setup, you need some specialized stuff.

 

I won't use the standard of how many wireless networks can be detected using Window's Network and Sharing center as a benchmark for the performance of a wireless card.

 

How about signal strength, then?

 

Nah. I'd use a real benchmark. I'd take the adapter, connect it to a router, send a file through the router. Rinse and repeat for each adapter. My wireless needs are based around moving files from computer to computer. Thus thorough output, not negotiating some wayward access point, is a plus.

If your wireless needs are streaming, do a benchmark on that. Signal strength is only part of the picture. Driver support, compatability with your router, etc have just as much if not more effect on your wireless performance.