Author: Aaron Gordon
Date: 14:52:01 02/09/04
Go up one level in this thread
On February 09, 2004 at 17:47:08, Andrew Williams wrote: >On February 09, 2004 at 17:33:56, Aaron Gordon wrote: > >>On February 09, 2004 at 15:28:21, Frank Phillips wrote: >> >>>On February 09, 2004 at 14:23:55, Aloisio Ponti Lopes wrote: >>> >>>>... by releasing their processors at the same speed in GHz ? >>>> >>>>As a consumer I can`t understand that. It seems to me that AMD`s problem is the >>>>heat issue... so the important thing to do when buying an AMD processor is to >>>>liquid-cool it or get some sort of special (refrigerated) case to build the >>>>system, if you want to push it to the limit by overclocking ? >>> >>>Are you sure an AMD cpu produces more heat than Intel, at the same performance >>>rating? >> >>Athlon 64 3400+ is faster than the Pentium 4 3.4GHz E (New Prescott CPU) and >>runs MUCH cooler. The Athlon 64 3400+ is 89 watts compared to the P4-3.4E's 127 >>watts. The P4 is slower and dumps over 40% more heat. Way to go Intel. :) If you >>think about it.. MHz for MHz the P3 is faster and cooler than the P4.. and >>Intels new "revised" P4 is slower and hotter than the old P4. Seems like they >>keep taking steps backwards. By 2006 I predict Intel will end up with 386 >>processors again but running 15GHz and will need liquid nitrogen cooling. :) >> >>Almost forgot to mention.. when you're not using your CPU or doing something not >>so cpu intensive the Athlon 64 (if the option is enabled) will clock your CPU >>down in steps (you won't notice the speed decrease). This allows the processor >>to go down to about 35 watts from 89. I'd love this option on my cpu.. I >>personally don't like dumping tons of heat into the air when I'm typing up stuff >>on the CCC, checking email, listening to mp3s, etc. >> > >While this is certainly a useful feature, I nearly had a heart-attack when, five >minutes before the start of CCT6, I did this: > >andrew/chess> cat /proc/cpuinfo >processor : 0 >vendor_id : AuthenticAMD >cpu family : 15 >model : 4 >model name : AMD Athlon(tm) 64 Processor 3200+ >stepping : 8 >cpu MHz : 800 ????????????????????????????? >cache size : 1024 KB >fdiv_bug : no >hlt_bug : no >f00f_bug : no >coma_bug : no >fpu : yes >fpu_exception : yes >cpuid level : 1 >wp : yes >flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov >pat pse36 clflush mmx fxsr sse sse2 syscall mmxext lm 3dnowext 3dnow >bogomips : 1593 > > >Of course, as soon as PM starts thinking, the 800 goes up to 2000! > >Andrew Heheh.. Yeah, if you don't know about the feature I'm sure it'll give you a bit of a surprise. As you said though.. soon as the CPU has to do something stressing it goes back up to full speed immediately. I like it though. Don't need to waste electricity & run a cpu hotter than it needs to be when you're not doing anything with it.
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