variable Vth

"Joerg" schreef in bericht news:9XnOe.239$ snipped-for-privacy@newssvr29.news.prodigy.net...

Hey Joerg, did you know that every post of yours uses at least on of the the words "expensive, cost, price, money" etcetera ;)

Hi Keith

Can you explain more about fourth terminal of soi? Thank you

Jason

The fourth terminal is the body. By modulating the body one changes the characteristics of the transistor. One usually ties the body somewhere or leaves it float, but it can be used to alter the characteristics of the transistor. See also: "Dual-Gate FET" and "FinFET".

It's probably a P3 architecture. P4's are a disaster for numeric work.

...Jim Thompson

Jim Thompson skrev:

snip

yep, the pentium-m is not a pentium4 its a (heavily) modified pentium3

-Lasse

Joerg skrev:

I think my 2.4GHz noname laptop does around 3 hours, and it's a P4 it should be alot better with a mobile pentium.

IBM claim something like 10 hours for some of their laptops if you add an extra battry instead in the drive bay

-Lasse

I switched to AMD chips for my PSpice machine... way faster yet than my old P3.

...Jim Thompson

Hello Sylvain,

Like, which ones? I haven't seen one yet.

Regards, Joerg

Well, you just need to select carefully. My laptop costed me about 1300 eur >2 years ago and it's equiped with "centrino" processors which are great for power consumption, they reduce both their clock speed and v_core according to the load. the newer centrino are even better.

Usually in that price range you find two categories : those who are means as laptop and those that are meant as desktop replacement. The latter category has higher clock rate / performance / feature for the same price but are often bigger / power-hungry.

I think the laptop designers didn't do that wrong since a modern laptop easily stays on doing burautic work for 5h/6h and is noticeably faster than your 486 ;p But the centrino marking was disturbing because mine is "only" 1.3 Ghz while the clock rate back at the time for the P4 was like 3Ghz. But my laptop is still faster in some computation than my 2.6 Ghz P4 ...

Sylvain

Hello Lasse,

I feel a bit uneasy about giving up the drive. My Contura ate three hard drives. The scream of death of a HD sounds awful but I had always backed up. In its defense I must say that it has traveled a few hundred thousand miles and sometimes it was rough. Nowadays a memory stick would do but they are a bit clumsy in portable use. An alternative might be a PCMCIA with an SD slot, if the laptop still has PCMCIA.

Regards, Joerg

Hello Sylvain,

That is a great performance, especially with video since it eats batteries fast.

Probably because they are so souped up these days. The old NiCd batteries usually lasted 3 years or more.

Regards, Joerg

Mine is an Acer Travel mate 800. And I did use it for 5 hour straight, doing mainly ssh from it to some server to configure them, while using wireless. I remember that quite well, I had it for like 2-3 week and I wanted to test the advertised capacity, I was really surprised ! Watching Xvid encoded movies during my weekly 2h train traject left it at about 50% of it's capacity.

Unfortunatly the battery are not that good, after a year it has lost half it's capacity ;(

Sylvain

It is. With a shorter pipeline, improved branch prediction and *LOT* more L1/L2 cache compared to P3. (IIRC, I read that like 2 years ago when I looked what to buy)

Sylvain

The original P4s had no integer multiplier (shipped IMULs *across-chip* to the FPU) nor barrel-shifter. Both were disasters for INT performance.

Memory sticks are great, but there is also the CD/DVD writer, for backups.