Archived from groups: alt.comp.hardware.overclocking.amd (
More info?)
"Peter van der Goes" <p_vandergoes@toadstool.u> wrote in message
news:8ATDd.19233$ql2.776@okepread04...
>
> "Jan" <janoleolsen@hotmail.com> wrote in message
> news:41dfe33e$1@news.broadpark.no...
>> Athlon64 is frequently sold "boxed", I assume that includes cooling. Any
>> idea about noise levels? If it's high, it might be better to buy OEM and
>> a
>> fan...?
>>
>>
> Just installed a 939 pin Athlon 64 3200+ (90 nm) w/retail HSF. Asus A8V
> Deluxe w/ 1 MB PC 3200, 2 HD's, DVD+-RW, DVD ROM, Zip Drive, etc. I almost
> replaced the fan before installing. Boy, am I glad I didn't! the fan
> (70mm, I believe) runs at ~3000 rpm and is incredibly quiet compared the
> the TMD fan HSF's I've been using in Athlon XP systems. The fan is
> inaudible over my case fans (3 Vantec 80mm Stealth).
> Temperatures, you ask?
> Is I type this, my CPU temp is 30 C with a case temp of 22 C in a 21 C
> room! This with an (admittedly very mild) 10% overclock. No, Cool 'n'
> Quiet is *not* operational.
> When I ran CPU stress test software, I couldn't get the CPU over 37 C!
> This is the coolest and quietest AMD PC I've ever owned (going back to K6
> days).
>
> I believe I now know why the HSF manufacturers have not rushed numerous
> A64 models to market as they did for the Athlons and Athlon XP's. No need
> = no demand.
> Of course, YMMV.
>
I don't mean to burst your bubble. In fact I agree that the stock A64
cooler is not bad, and it is fairly quiet.
But I have to say your temperature monitoring software is telling you
porkies. (Porky pies = lies, for those not familiar with cockney rhyming
slang!)
1. I *very* much doubt your case temp is only 1C above room temp. Probably
more like 5C to 10C above is more likely. If your room temp is 21C, your
case temps are in all probability somewhere around 30C. Anything less than
a 5C delta requires *extremely* high airflow and clean internal layout.
2. At 10% overclock, your CPU is putting out something like 80w when fully
stressed. With the best heatsink in the world and a screaming fan (with the
stock HS and fan are not), you need around a 10C delta between your CPU
*outer* temps and your case temps to dissipate 80 watts. (Assuming a
0.13C/W heatsink & fan.) With the stock heatsink and fan, you can more or
less double that. So your CPU *case* temps are probably somewhere around
45C to 50C under load. The CPU *core* temp - i.e. inside the chip itself
will be even higher; probably 50C to 55C.
Therefore, if your motherboard is saying your CPU is 37C under load, its
plainly incorrect. In fact its practically impossible with the stock
heatsink and fan. You would have to be sitting in a room at around 0C to
achieve this.
Don't be put out, or surprised by this. Motherboards are notorious for
inaccurately reporting temperatures. Its all too common, I am afraid.
Chip
an.2005.01.08.23.22.41.894392@TAKEOUTverizon.net...
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