Originally posted by: Lars
So can I use this heatsink with the included fan on my XP 2000+ (non-overclocked)? TIA
Thanks to the info stevejst posted
And the
maximum stable overclock abtained( MHz):
Akasa 824 ( GC 68 ) with 31CFM fan: 1925
you will see that you can easily use the stock included fan.
Even an XP2100+ only actually runs at 1730MHz, which is well below the 1925MHz they were able to achieve.
The numbers that stevejst says the stock fan can do, 1925, would be more than a stock XP 2400, (if made).
Also something interesting about testing temps at the hsf review that stevejst likes to use:
http://www.tech-pc.co.uk/15coolers.php
NOTE: Due to the EPOX motherboard using the 2312 BIOS (best performance) it actually reads the internal diode slightly incorrectly, and therefore the true temps are about 10c lower than the results I got in this review. (snip)
Also please remember that reading from the Internal Diode from the CPU which is actually inside the CPU core are a lot hotter than those reported from a thermister in the CPU socket.
So for an example, lets say your CPU is running at a reported 55c from an everyday board which has a thermal probe in the socket, immediately you can add approx 20c onto this to get a good idea of the core temperature (the internal diode), and due to the EPOX BIOS not understanding the T'bred's diode properly you can add another 10c. So placing that same CPU in an EPOX 8K3A+ your temps would shoot up to 85c, (snip) So don't faint when you see the high temps, as it due to them been read from the internal diode (approx +20c) and a bug in the EPOX bios (+10c)
Reading between the lines, this then looks like normal temp is 55c, but there tests will show that as 85c.
I'm not saying the review is right or wrong, just pointing out the the review stevejst likes to use shows temps that are 30c higher than what you may get in another motherboard. So when my 8kha+ that doesn't use internal diode reads 50c, that would compare exactly to 80c in these tests.
So their Results overclocking
Supplied low speed 80mm fan = 88c in BIOS, 94c with Sisoft Burn in and a maximum stable
speed of 1925Mhz, (faster than XP2400+, due to142MHz fsb, Vs 133MHz) would actually be:
58c in Bios, 64c (previous and other board temp measurement method) at max overclocked
speed, using 1.92v. Yes, that is toasty, but workable, by simply lowering your vcore. Of course
if AMD made a 1925MHz CPU, it would come ready to run that speed at a much lower voltage.
What they are doing here is forcing a CPU to run much faster than originally intended, and to
do that requires additional voltage for "some" cpu's. Their testing is something 99.999% of the
thread readers here will never come close to doing.