what amd mobile cpu is compared wtih a pentium m mobile 2.0GHz w/2mb L2 cache?

[Mik3y]

what amd mobile cpu is compared wtih a pentium m mobile 2.0GHz w/2mb L2 cache? i'm curious cuz the one on newegg sells for $640 and i never really knew wut the pentium M's were compared to.

 

[ichief]

Good question...considering the Pentium M is designed similar to the new AMD Athlon/Sempron chips, I wonder how the two chips compare. Has anyone performed benchmarks between the two?

 

[alexruiz]

The P-M 755 (2.0 GHz, 2 MB L2, 90 nm) should give a good fight to a mobile A64 3000+ (1.8 Ghz, 1MB L2)

We are still waiting for more review....

 

[Gamingphreek]

I have not because you cant. The pentium-M is a RISC (Reduced Instruction Set Chip). Whereas the Athlon and Sempron chips are not. Therefore, we would be comparing 2 different microarchitectures, which would indeed give the pentium-m the upper hand. The Athlon pipeline may be short IIRC 20 stages for the XP and 30 for the 64, but the pentium-m is much shorter (IIRC 13!?)

Also i dont believe you can by pentium-M motherboards flat out... i think you would have to buy the laptop open it up and work from there.

-Kevin

 

[alexruiz]

Originally posted by: Gamingphreek
I have not because you cant. The pentium-M is a RISC (Reduced Instruction Set Chip). Whereas the Athlon and Sempron chips are not. Therefore, we would be comparing 2 different microarchitectures, which would indeed give the pentium-m the upper hand. The Athlon pipeline may be short IIRC 20 stages for the XP and 30 for the 64, but the pentium-m is much shorter (IIRC 13!?)

Also i dont believe you can by pentium-M motherboards flat out... i think you would have to buy the laptop open it up and work from there.

-Kevin

A few details my friend:

- The P-M is NOT a RISC architecture. The last x86 CPU that was truly a RISC architecture was the K6, a beauty for general usage and very often critiziced for its single pipeline FPU.....
- Neither the K7 nor the K8 have more than 17 stages in its pipeline (FPU). Those 20 and 31 belong to the P4 willamete-northwood and the prescott. The Athlon 64 has 12, and 17 in the FPU as mentioned. The Athlon XP and all the K7 versions had only 10 stages.


Alex

 

[Jeff7181]

How can a processor be both x86 and RISC? Aren't they mutually exclusive?

Also I believe the AthlonXP has something like 9 stages in it's pipeline, and the Athlon 64 has 12.

*EDIT* The Pentium 3 had 10 stages in it's pipeline... the Pentium 4 has 20... and the Prescott has 31... for the record

**EDIT** Correction... the Athlon XP has 10 stages, and the Athlon 64 has 12.

 

[Mik3y]

Originally posted by: Gamingphreek
I have not because you cant. The pentium-M is a RISC (Reduced Instruction Set Chip). Whereas the Athlon and Sempron chips are not. Therefore, we would be comparing 2 different microarchitectures, which would indeed give the pentium-m the upper hand. The Athlon pipeline may be short IIRC 20 stages for the XP and 30 for the 64, but the pentium-m is much shorter (IIRC 13!?)

Also i dont believe you can by pentium-M motherboards flat out... i think you would have to buy the laptop open it up and work from there.

-Kevin

well, in newegg, it says that the pentium m is a socket 478, so i'm sure its compatible wtih the rest of the socket 478 series.

 

[ViperV990]

Originally posted by: Mik3y

Originally posted by: Gamingphreek
I have not because you cant. The pentium-M is a RISC (Reduced Instruction Set Chip). Whereas the Athlon and Sempron chips are not. Therefore, we would be comparing 2 different microarchitectures, which would indeed give the pentium-m the upper hand. The Athlon pipeline may be short IIRC 20 stages for the XP and 30 for the 64, but the pentium-m is much shorter (IIRC 13!?)

Also i dont believe you can by pentium-M motherboards flat out... i think you would have to buy the laptop open it up and work from there.

-Kevin

well, in newegg, it says that the pentium m is a socket 478, so i'm sure its compatible wtih the rest of the socket 478 series.

Don't think the S478 P-M and P4 S478 boards are electrically compatible.

 

[Gamingphreek]

I dunno then. I read somewhere that the Pentium-M was RISC architecture.

I seriously dont think that it is socket 478 though as the power requirements for the pentium-m are sow much lower. If it is socket 478, then i dont think our M/Bs will support everything.

-Kevin

 

[AWhackWhiteBoy]

are you speaking about the new 2ghz Dothan Pentium-M? if so, search the forum, i posted a link with benchmarks awhile back. the Dothan looks to be one sweet processor.

 

[AWhackWhiteBoy]

yes,the chip in question is the new Dothan core Pentium-M,an all around kick ass chip

http://www.x86-secret.com/pics/cpu/dothan/bench3-1.png

http://www.x86-secret.com/pics/cpu/dothan/bench3-2.png

http://www.x86-secret.com/pics/cpu/dothan/bench3-3.png

http://www.x86-secret.com/pics/cpu/dothan/bench3-4.png

http://www.x86-secret.com/pics/cpu/dothan/bench3-5.png

http://www.x86-secret.com/pics/cpu/dothan/bench3-6.png

i'm really not sure just how true these benchmarks are,but if they are accurate,this chip will be a killer,hands down.

 

[Mik3y]

do u know wut motherboards they are compatible wtih?

 

[AWhackWhiteBoy]

i don't even think they are even being used just yet,they were just released. they are for laptops,i doubt they'd work in any desktop computer. Intel has many variations of the 478 pin socket, this is just another. i think its more dependant on chipset rather than socket. i'm not sure if its still the case,but Intel was piggish and refused to license other companies to make chipsets for their Pentium-M so that they could whore the Centrino name and get it on the market,so don't expect much.

 

[jdiddy]

Damn i want one of those i have an original Banias 1.4 ghz I wonder how much of a upgrade that cpu would be and if my laptop supports it.

 

[BigBadBiologist]

The only chipset that the Pentium M will work with is the 855 chipset. No desktop boards have been made with that as of yet, so no pentium M for desktop. **Exception: I think Hitachi or someone made a desktop system for them, BUT it is meant for corporate environments and probably is nowhere near as tweakable as we would like**