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TimSSC
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PostPosted: Fri Jun 02, 2006 8:33 pm    Post subject: Best processors for linux? Reply with quote

I am looking to get a new laptop soon, to take with me to college. I do a lot of compiliing (well duh, I run gentoo), so that would probably be the most demanding thing I would need it to be doing. I like long battery life, also. I like the idea of the intel core duo, and that's what I'm thinking of going with. But my question is, which is better for running gentoo, the core duo, or an AMD 64? Also, which is more powerfull, and which uses less power? Thanks.
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GetCool
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PostPosted: Fri Jun 02, 2006 8:45 pm    Post subject: Re: Best processors for linux? Reply with quote

There really is no benefit to using any one processor over another in Linux. With a laptop, you should probably use power efficiency as your deciding factor (and unfortunately, I can't help you with this, since I don't really know the mobile CPU market very well).

As far as the Linux OS goes, however, it won't really care one way or another after you compile Gentoo for your given architecture.

EDIT: You may want to check some hardware review sites for more details on various CPUs.
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DNAspark99
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PostPosted: Fri Jun 02, 2006 9:12 pm    Post subject: Reply with quote

I've got an AMD64 based laptop (HP 3400), fast at compiling, powernow features help with battery life, but it still eats through a full charge in about an hour and a half. (or less, depending on load/usage)
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Kanniball
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PostPosted: Sat Jun 03, 2006 12:16 am    Post subject: Reply with quote

for desktops an amd dual core is the best choice.
for laptops with battery life concerns i think centrinos are the best option.
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Schmolch
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PostPosted: Sat Jun 03, 2006 12:42 am    Post subject: Reply with quote

Consider a Thinkpad T60, it has a Core-Duo up to 2,2 GHz and with the big battery + ultrabay-battery (you pull the cd-drive out) it can run 8-10h.

http://users.erols.com/chare/elec.htm
this site lists all CPUs with their Power-Consumption


Oh i just realized this is not another "recommend a laptop" Thread but a "recommend a Laptop-CPU" Thread.

Im not sure about that, but didn't the AMD-DualCore-64Bit-Laptop-CPU just come out?
Turion X2 or something, the aquivalent to the AMD X2 for Laptops.

I would say DualCore is the way to go, i dont think a 64Bit SingleCore CPU compiles much faster (if any) than a ordinary 32Bit SingleCore CPU, but with DualCore you immediately get twice the Performance and until now Intel is ruling this area with the CoreDuo (CoreDuo2 coming soon btw.)
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Omega21
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PostPosted: Sat Jun 03, 2006 1:07 am    Post subject: Reply with quote

I have a P4 3.2GHz laptop. It owns my friend's dual core.
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Schmolch
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PostPosted: Sat Jun 03, 2006 1:11 am    Post subject: Reply with quote

Omega21 wrote:
I have a P4 3.2GHz laptop. It owns my friend's dual core.


BS. A single-core Pentium-M 2.0 is already faster than a P4-3.2 and a Core-Duo runs circles around it.
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lxg
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PostPosted: Sat Jun 03, 2006 9:00 am    Post subject: Reply with quote

DNAspark99 wrote:
I've got an AMD64 based laptop (HP 3400), fast at compiling, powernow features help with battery life, but it still eats through a full charge in about an hour and a half. (or less, depending on load/usage)


I also have that. If you need the notebook to carry it to different places where you can plug it to the power grid, then it's ok. But if you're on the road, then I'd suggest something like an Intel mobile processor. (As for me, the former is the case, so I'm alright. ;-))
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TimSSC
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PostPosted: Sat Jun 03, 2006 4:49 pm    Post subject: Reply with quote

I am intreaged by this AMD 64 bit dual core, will have to look into that... best of both worlds. I don't need tons of battery life, I am getting this for college, and I'm sure all the classrooms have power outlets (Brown University, btw), but I would like to be able to do a few hours of work outside when I want. As for laptops, I'm currently thinking about a sony vaio, 14" screen 1GB ram, intel core duo, and an nvidia graphics card. However, it seems to me that on board graphics would use up less power?
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TimSSC
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PostPosted: Sat Jun 03, 2006 4:50 pm    Post subject: Reply with quote

I'm pretty new to the linux world, but how long does it take linux to catch up with new hardware? I mean, when this AMD 64 - dual core comes out, will it be a while before linux supports it (same with the core duo 2?). Thanks for all the replys.
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troymc
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PostPosted: Sat Jun 03, 2006 4:56 pm    Post subject: Reply with quote

TimSSC wrote:
I'm pretty new to the linux world, but how long does it take linux to catch up with new hardware? I mean, when this AMD 64 - dual core comes out, will it be a while before linux supports it (same with the core duo 2?). Thanks for all the replys.


It supported it from the beginning.

I'm on a laptop with an FX60 right now. http://www.sagernotebook.com/pages/notebooks/product.cfm?ProductType=9750

Gentoo's AMD64 runs fine. http://gentoo-wiki.com/HARDWARE_Clevo_D900K



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lxg
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PostPosted: Sat Jun 03, 2006 5:00 pm    Post subject: Reply with quote

TimSSC wrote:
I'm pretty new to the linux world, but how long does it take linux to catch up with new hardware? I mean, when this AMD 64 - dual core comes out, will it be a while before linux supports it (same with the core duo 2?).


With components like processors, Linux is by far the fastest platform to support and fully use new technologies. For example, when AMD introduced their 64 bit processors, few later the first Linux distros released native 64 bit systems, while Windows... you know. ;-) Problems with Linux and hardware occur only when vendors don't stick to the standards, don't open their specifications and then not even provide (at least) some proprietary driver.
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Omega21
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PostPosted: Sat Jun 03, 2006 11:52 pm    Post subject: Reply with quote

Schmolch wrote:
Omega21 wrote:
I have a P4 3.2GHz laptop. It owns my friend's dual core.


BS. A single-core Pentium-M 2.0 is already faster than a P4-3.2 and a Core-Duo runs circles around it.


Trust me.. I have a friend with a Pentium M at 1.8GHz and we did benchmark it with a compilation of the same package.
Mine really beat him.

Then my friend with a dual core did the same, (I think his was nearly 2GHz as well). Again, mine was faster.
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Mad Merlin
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PostPosted: Sun Jun 04, 2006 12:52 am    Post subject: Reply with quote

Omega21 wrote:
Schmolch wrote:
Omega21 wrote:
I have a P4 3.2GHz laptop. It owns my friend's dual core.


BS. A single-core Pentium-M 2.0 is already faster than a P4-3.2 and a Core-Duo runs circles around it.


Trust me.. I have a friend with a Pentium M at 1.8GHz and we did benchmark it with a compilation of the same package.
Mine really beat him.

Then my friend with a dual core did the same, (I think his was nearly 2GHz as well). Again, mine was faster.


What package and what MAKEOPTS? Very believeable if you're using -j1, not believeable if you're using -j2 or higher. Did you use the same USE flags?

As a point of reference, my Athlon64 X2 4200+ is on average 3-4 times faster at compiling than my 1.3 GHz Pentium-M.
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PostPosted: Sun Jun 04, 2006 4:39 am    Post subject: Reply with quote

Sigh... I imagine there's going to be even more of this in the windows world -- "Dual Core? It's the same! The benchmark says so!" For a better comparison, run two benchmarks on each computer simultaneously. The single-core will get half the performance. The dual core will get full on both. Each core can only go so fast, but there's two of them.
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