Author: Andrew Williams
Date: 15:02:00 02/09/04
Go up one level in this thread
On February 09, 2004 at 17:52:01, Aaron Gordon wrote: >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. I agree. I've done some quick testing, and it seems to increase its speed so fast that it makes no measurable difference to PM's nps rate. Andrew
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