old tual P3-M versus centrino Pentium-m

[holden j caufield]

whats the difference in performance battery life? Got a inspiron 8100 1.2 ghz how much faster is the P-M at say 1.3 or 1.4? the 8100 still on pc133 memory also so is it slightly slower or significantly?

 

[OldSpooky]

I don't know what P3-M notebooks were getting, but I can get 4.5 to 5.5 hours on my T40 depending on usage (how much hdd access, screen brightness, CPU usage, etc).

I remember that PC World benchmarked a 1.2 GHz P3-M against a 1.7 GHz P4-M, and the result was a virtual tie (Dell i8100 vs i8200). The general rule of thumb seems to be that a 1.30 GHz Pentium-M is about as fast as a 1.8 GHz P4-M, so I'd say the Pentium-M is certainly faster, but not by a huge margin.

It may also depend on the task. In bandwidth heavy tests like PiFast, the 1.30 GHz Pentium-M/855M chipset combo absolutely destroys a 1.20 GHz Celeron/815EP system. I don't remember the numbers, but the PM won by a wide margin. Same with encoding a music CD into MP3 format.

 

[holden j caufield]

up

 

[mocca]

The P3m might be a little bit slower than the P-M at the same clock speed consider the P-M have larger cache size (double to be exact) and faster bus. Beside, the P3m top out at 1.2GHz (1.4GHz exist for the desktop version) so there isn't much chance of comparison between the two unless one would compare 1.2GHz P3m with 1.3GHz P-M.

Mocca

 

[ethebubbeth]

I remember reading somewhere that the 1.4ghz pentium m is equivalent in performance to a 2.4ghz Pentium 4 m, but i have no way to verify that. My toshiba m10 with a 1.4ghz pentium m and geforce 420 go gets just over 6 hours when i have the brightness turned down, cpu throttled, nvidia powermizer on low performance, and wireless networking turned off.

 

[Derango]

Thats a little high. In general the conversion factor runs like this:

1.3 p-m = 1.8ghz p4
1.4 p-m = 2.0ghz p4
1.5 p-m = 2.2ghz p4

etc.

 

[Mday]

the new pentium M is a throwback to the p3 design. however, there are modifications to the core allowing for better power consumptions and performance. it's not really wrong to assume that a pentium M will perform (clock for clock) the same as a p3. however, the pM has better system support, so it should be faster.

 

[JackHawksmoor]

I just love that the Intel 686 core WILL NOT DIE! 😀 Geez, it's been on the market since 1995, and it's STILL a pretty darn neat design.

 

[crzylgs]

Originally posted by: Derango
Thats a little high. In general the conversion factor runs like this:

1.3 p-m = 1.8ghz p4
1.4 p-m = 2.0ghz p4
1.5 p-m = 2.2ghz p4

etc.

thats about right...my 1.6 p-m is as fast or faster than the 2.5ghz p4 desktop.... (400mhz bus not 800 obviously)