Desktop cpu vs Laptop cpu

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jaster

Would anyone know why there's a cpu for desktops and a cpu for laptops?
I mean if laptop cpus are smaller, cooler more energy efficient why is AMD
and Intel making desktop cpus and why are motherboard manufacturer's using
laptop cpu in their desktop motherboards?
 
jaster said:
Would anyone know why there's a cpu for desktops and a cpu for laptops?
I mean if laptop cpus are smaller, cooler more energy efficient why is AMD
and Intel making desktop cpus and why are motherboard manufacturer's using
laptop cpu in their desktop motherboards?
Click to expand...

More transistors equal more heat and more energy required to run it. In
order to make smaller and cooler, you usually have to make a processor less
powerful in some manner and/or run it at a slower clock speed. Thus,
neither processor is good for the other application. If you put a desktop
processor in a laptop, there is more heat and more power draw (lowering
battery life). If you put a laptop processor in a desktop, it is slower.
Of the two choices, it's easier to make a laptop CPU work in a desktop.
That is, unless you require severe processing power in your desktop. -Dave
 
Laptop CPU's are designed for high heat useage due to the confines of the
laptop case. The problem is the laptop CPU's are designed to slowww down
their operating speed if they start getting too warm, which they always do.
So you've actually got a much slower CPU than its rating.
 
Would anyone know why there's a cpu for desktops and a cpu for laptops?
I mean if laptop cpus are smaller, cooler more energy efficient why is AMD
and Intel making desktop cpus and why are motherboard manufacturer's using
laptop cpu in their desktop motherboards?
Click to expand...

Different design goals... laptop focuses on maximum
power savings at the expense of performance, desktop
chips usually go the opposite direction (performance
over power).

And actually, Intel is changing strategy.

Intel to Dump Pentium 4 in Favor of Pentium M
http://www.theregister.co.uk/2004/05/07/intel_cancels_te
jas/
http://slashdot.org/article.pl?sid=04/05/07/1213233
 
jaster said:
Would anyone know why there's a cpu for desktops and a cpu for laptops?
I mean if laptop cpus are smaller, cooler more energy efficient why is AMD
and Intel making desktop cpus and why are motherboard manufacturer's using
laptop cpu in their desktop motherboards?
Click to expand...

Different useage patterns .

But there's a bigger *BUT* as well; oftentimes the laptop chips's
design is later than the original desktop chip; lower VCC ; and
many other improvements.

The AMD K6 2/III *plus* laptop chips are a good example; extremely
overclockable; cool; added L2 cache at FSB speed (128 on the 2+ ;
256 on the III+ ); software multiplier control; and almost the
whole Athlon instruction set .

A + K6 with the right hardware and tweaks can embarrass the hell out
of a P3-750 . I can verify-- this box "is one".

But then there's the "bad ones" ; Anybody remember the Cyrix/TI
"486SLC" crap ?? I do; and I'd love to "do bad things" to whoever
came up with these ...

There's a new ripoff going on ; I don't have the full details but it
appears that ECS is offering cheap Athlon "integrated" mobos using
soldered-on laptop Athlons overclocked and locked at same as "Athlon
Pro 3200" ..
 
R. Asby Dragon said:
There's a new ripoff going on ; I don't have the full details but it
appears that ECS is offering cheap Athlon "integrated" mobos using
soldered-on laptop Athlons overclocked and locked at same as "Athlon
Pro 3200" ..
Click to expand...

They have been selling overclocked or merely overhyped boards since the
original "GigaPro" boards of late 2000-early 2001. The L7VMM3Pro is said to
use an Athlon 1600+ tuned to 3100+ performance.

Uh-huh.
 
Different design goals... laptop focuses on maximum
power savings at the expense of performance, desktop
chips usually go the opposite direction (performance
over power).

And actually, Intel is changing strategy.

Intel to Dump Pentium 4 in Favor of Pentium M
http://www.theregister.co.uk/2004/05/07/intel_cancels_te
jas/
http://slashdot.org/article.pl?sid=04/05/07/1213233
Click to expand...

Thanks.

I saw news briefs on Intel dropping Jayhawk and Tejas
but those didn't light the bulb. TheRegister article clears it up and I
am glad to see Intel saw the light long before I posted this question.

Most PC users don't have top of the line cpus or use 100% cpu performance
24/7. I didn't see a need for Intel or AMD to develop a 0.2 Ghz
performance gain cpu when most users aren't buying and others are looking
for quieter, cooler and performance cpus.
 
Different useage patterns .

But there's a bigger *BUT* as well; oftentimes the laptop chips's
design is later than the original desktop chip; lower VCC ; and
many other improvements.

The AMD K6 2/III *plus* laptop chips are a good example; extremely
overclockable; cool; added L2 cache at FSB speed (128 on the 2+ ;
256 on the III+ ); software multiplier control; and almost the
whole Athlon instruction set .

A + K6 with the right hardware and tweaks can embarrass the hell out
of a P3-750 . I can verify-- this box "is one".

But then there's the "bad ones" ; Anybody remember the Cyrix/TI
"486SLC" crap ?? I do; and I'd love to "do bad things" to whoever
came up with these ...

There's a new ripoff going on ; I don't have the full details but it
appears that ECS is offering cheap Athlon "integrated" mobos using
soldered-on laptop Athlons overclocked and locked at same as "Athlon
Pro 3200" ..
Click to expand...


Thanks.

Toshi187 replied with links to articles explaining that Intel's
cancellation of Jayhawk and Tejas is Intel's answer to my question.

ECS (aka cheap) but their boards work for me. I'm running this
now off the K7S5A. I'm only pissed because I could have gotten a XP2200
instead of XP2000 had I waited another week or 2.

Probably ECS is doing that for quality control. The early K7S5As
suffered many problems and returns before the 3.1 version so a soldered
cpu reduces RMA.
 
I saw news briefs on Intel dropping Jayhawk and Tejas
but those didn't light the bulb. TheRegister article clears it up and I
am glad to see Intel saw the light long before I posted this question.

Most PC users don't have top of the line cpus or use 100% cpu performance
24/7. I didn't see a need for Intel or AMD to develop a 0.2 Ghz
performance gain cpu when most users aren't buying and others are looking
for quieter, cooler and performance cpus.
Click to expand...

(And on a related note, my latest box is a VIA C3 600MHz
fanless... small, quiet, power-efficient, does not count
as a space-heater.)
 
(And on a related note, my latest box is a VIA C3 600MHz
fanless... small, quiet, power-efficient, does not count
as a space-heater.)
Click to expand...

Good for you. How's that cpu's processing working for you? Are you
running Win XP with it? System specs?
 
Good for you. How's that cpu's processing working for you? Are you
running Win XP with it? System specs?
Click to expand...

Running Gentoo Linux. Has a 512MB PC2100 ECC chip
installed (sorta wish I had a 1GB chip), a 80GB 7200rpm
drive as the primary, 120GB 5400rpm drive as the
secondary and a DVD-ROM. Case is a Venus Morex 668 from
LogicSupply.com.

(Doing the stage 1 compile took overnight...)

If/when I have the cash, I'm also planning on building
one for a PVR using the Hauppauge PVR cards and
WinXP/SageTV.
 
Running Gentoo Linux. Has a 512MB PC2100 ECC chip
installed (sorta wish I had a 1GB chip), a 80GB 7200rpm
drive as the primary, 120GB 5400rpm drive as the
secondary and a DVD-ROM. Case is a Venus Morex 668 from
LogicSupply.com.

(Doing the stage 1 compile took overnight...)

If/when I have the cash, I'm also planning on building
one for a PVR using the Hauppauge PVR cards and
WinXP/SageTV.
Click to expand...


Thanks. Running FC1 on P3-933 with 256mb pc133. It ran better before a
128mb chip failed but it so slow booting and to the X-desktop. Once there
its not bad. CA810E board so not heat issues rock solid performance.

We had a Hauppauge TV ISA card when 486s were the hot cpus must have cost
someone a $1000 or more we never did find drivers for the card. But
if/when you get the cash before July Hauppauge has a promo:
http://www.e-consultancy.com/newsfe...s-in-massive-lord-of-the-rings-promotion.html
 
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