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  Does Athlon machines heat faster 
 Date Written 
Vijay Subramanian Aug 13, 2003, 02:59pm EDT Report Abuse
Let me start by saying I am not at all good at Hardware. I am more of a software person.
I am trying to make a choice between P4 and Athlon for a new Laptop. One of my friend suggested to go for P4 if I do not have an air-conditioned or for that matter a cool room. It seems that Athlon based machines heat up faster than a comparable P4 machines. Is this true or Can I go for a cheaper AMD machines? All I am going to use this is for simple operations like Internet browsing, voice chat, CD burning and occasional DVD viewing. On second thoughts is Celeron more than enough?

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Max Lindholm Aug 13, 2003, 03:47pm EDT Report Abuse
>> Re: Does Athlon machines heat faster
Based on my own experience, amd procs seem to run at higher temps than intel based chips. My AMD 1.2ghz Thunderbird was running so hot that overclocking it by 100mhz or so would produce lock ups almost 100% of the time during windows startup. My P4 2.4ghz has been running at ~2800mhz for a while now without any overheating problems.

I guess AMD procs are clocked close to maximum speeds, whereas Intel procs generally have some decent headroom left for overclocking.

grant fanning Aug 15, 2003, 04:21pm EDT Report Abuse
>> Re: Does Athlon machines heat faster
ive been running my 2ghz celeron at 2.66ghz for a few days now and the temperature never increased one bit.

James Marlin Aug 15, 2003, 08:23pm EDT Report Abuse
>> Re: Does Athlon machines heat faster
No insult directed to any one but I'll try to answer the question you posted, rather then just state my view point.

First off the AMD vs. Intel heat production issue is more with the desktop cpu's, and less of a concern with the notebook cpu's. One thing to consider is that a good notebook manufacture will take heat into account when designing a notebook, in fact that's one of the major reasons that notebooks are pretty hard if not impossible to upgrade, be on more memory, or a larger hard drive. The only thing you should be concerned about if your getting a notebook, is that you are getting a true "mobile" cpu, some P4 notebooks have desktop cpu's which do produce more heat, and are power hungry to boot.

As for how much you need for what you want to do, not nearly as much as you would think. Unless you are a gamer, programer, or produce content (photo shop, movie editing, 3d modeling) a lowly 500mhz cpu with 256mb's of ram is enough of a computer (surprise eh?). To view DVD's at this speed you'll need a hardware decoder though, for software decoding you should have at least a 1gig cpu and maybe even faster, this all depends on the video chip in the notebook.

So does this means get the cheapest notebook you can? No, in fact that would/could be a big mistake. Unless the notebook is a secondary computer (in addition to your desktop system), or you can say with total certainty that you'll never do anything else, you might find yourself replacing the notebook with in the year, or even sooner.
My sister bought a cheap notebook, Celeron, cd (no burner), 5gig harddrive, no NIC, etc. Found after 6 months that she was getting into photo manipulation, and wanted to start burning her own music cd's. And because upgrading would end up costing nearly the same as a new book, she ended up just buying a new one. Sometimes it's better to have some headroom, in case your use for the book changes. For example if there's any chance you'll want to game, you need to be carefull what video chipset it has, this and the cpu are where you'll see the biggest improvements as you move up in price.

So my advice, decide just how much you can really afford to spend (not what you want to spend). Go to type in "notebook reviews" (without the itilacs) and research, ask any one you know that has a notebook, what do they like, and don't like, then research some more. Once you have a pretty good idea of what you want in a notebook and what brand/processor suits you, you can start looking to buy. The goal here isn't to spend the least you can, but get the most you can for what you spend, of course keeping your budget in mind. And if you get a killer notebook, that will last you a few years, and still stay within budget, you've done well.

Hope I could help.

Athlon XP M 2500+ (12x200FSB=2.4 ghz, PR 3500+), Soltek SL-75RN2-L, 1gig 3200DDR Ram, ATI X800GTO, NEC MultiSync FE991sb, Creative Audigy OEM, Logitech 5.1 speakers, 40gig HD booting XP, 200gig@50%games, Lite-On DVD burner, LG 52x32x52x
jmerc Aug 16, 2003, 06:39am EDT Report Abuse
>> Re: Does Athlon machines heat faster
Good post James, very informative. I was gonna give some of the knowledge I have received recently, but you basically covered pretty much.

Life is too short, make the best of it!
Caveman017 Aug 16, 2003, 03:38pm EDT Report Abuse
>> Re: Does Athlon machines heat faster
I have a Pentium 2 400MHz laptop, 288MB PC66 SDRAM, 10GB HD, Windows XP Professional, 8x DVD, 8MB ATI Rage mobility. Win DVD 3.2
I only have a software decoder with this machine and its great on vacations

Brandon G.

~~I'd like to think about myself as a very advanced computer technician but it wont happen till i get a job:)
James Marlin Aug 16, 2003, 06:12pm EDT Report Abuse
>> Re: Does Athlon machines heat faster
Brandon G. you sure your only using a software decoder?
If you are, the DVD gods decided to smile on you.
I was using software, on a p3 600 with a 32mb Geforce DDR (with TV out), movies were fine till there was any sudden or quick motion, then the picture got all jerky. Ended up getting a Creative Dx2 used off of E-bay, and it fixed every thing up.

Athlon XP M 2500+ (12x200FSB=2.4 ghz, PR 3500+), Soltek SL-75RN2-L, 1gig 3200DDR Ram, ATI X800GTO, NEC MultiSync FE991sb, Creative Audigy OEM, Logitech 5.1 speakers, 40gig HD booting XP, 200gig@50%games, Lite-On DVD burner, LG 52x32x52x
DDB Sep 12, 2003, 02:51am EDT Report Abuse
>> Re: Does Athlon machines heat faster
For the desktop CPUs following is sure: the old Thunderbird, Palomino and Tbred-A cores produce a lot of heat. But that changed with Tbred-B and Barton. And one important reason for P4 to seem running "cooler" is that their HLT mode is better supported during idle times. Install Prime95 or some other FPU intensive client which is running at idle priority to see what happens then. Notebook CPUs are already choosen to run at low voltages and their changing of voltage/clockspeed during operation are supported by the OS - so they won't become very hot.

BTW there are also tools available to lower the clock for desktop Athlons during operation.

Have a look at this image and see what is possible if the Athlon is allowed to go into halt mode during idle times:

The whole thing is a relict of the K7 bus which makes it necessary to stay connected if the northbridge doesn't support bus disconnection. So windows just doesn't try to use this mode. But there is enough software to enable that.

So to compare CPU temperatures you either have to push the CPU load to 100% or enable the right behaviour during idle mode.




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