What RPM cooling fan speed?

DavidNW

DavidNW

Big Geek
Hello, everyone.

I want to install a 1.8 to 2 GHz processor. I would like an adequate fan speed to efficiently cool such a chip. I currently have a 1.25 GHz chip, and presumably, an adequate fan - as it's been working very well for the past 4 years. I cannot see any RPM rating on the current fan to try to determine whether it could cool a higher GHz processor.

Any help, as always, would be appreciated.

Regards,

Dave.
 
This is just like the Power supplies Amps vs. Watts deal.
In fans, the same applies except with Airflow vs. Fan speed.
You could have a 8cm fan with a RPM of 5000 and only a 18CFM airflow.
Now, a 12cm fan with a RPM or 1500 and a CFM of 37 is obviously looking much better isn't it?
Any fan with a CFM of 25 or over should do the job well enough. You'll find most basic fans these days use fan speeds of around 2500RPM or so.
 
Use a system temp monitor when you install the new processor, and keep a close eye on it. If you think its getting too hot buy a new heatsink! (and get a big nasty one!).

Is this an AMD or an Intell processor?
 
Its best to get a heatsink and fan which is rated for the processor you want. What CPU have you got now, and are you certain you can upgrade (motherboard limitations).
 
Addis said:
Its best to get a heatsink and fan which is rated for the processor you want. What CPU have you got now, and are you certain you can upgrade (motherboard limitations).
Click to expand...

Okay, guys, and thanks for your help & advice.

I have an ADM Athlon XP (Thoroughbred) 1.25 GHz chip in the PC at present. I plan to go for a Athlon XP, say, 1.85 -2.00 GHz chip. I understand that I can actually go up to an Athlon XP 2600 (2.13 GHz, FSB:266 MHz) as far as the motherboard is concerned. However, the latter is proving hard to come by and I may have to settle for a lesser-powered chip.


FYI, some technical info copied & pasted from the motherboard's manual:

Processor . Support Socket 462 package CPU
. Supports AMD Athlon XP/Athlon/Duron processors
. Supports 200/266 MHz Front-Side Bus
Chipset The VIA KM266 Northbridge and VT8235 Southbridge in this
chipset in accordance with an innovative and scalable architecture
with proven reliability and performance. A few of the
chipset’s advanced features are:
. An advanced V-Link memory controller architecture that
provides the bandwidth up to 266 MB/s and performance
necessary for even the most demanding Internet and
2D/3D graphics.

I have just found out via a fan speed test tool that my present fan is running at around 2902 RPM; so from what's been said, I take it that it will be good enough for a 1.85 - 2.00 GHz processor?

Regards,

Dave.

P.S.

The following processors are currently supported by this mainboard.
Athlon XP: 2000+ and up; FSB: 266 MHz
Athlon: 650 MHz~1.4 GHz, FSB: 200 MHz, 266 MHz
Duron: 550 MHz~1.2 GHz, FSB: 200 MHz
 
DavidNW said:
I have just found out via a fan speed test tool that my present fan is running at around 2902 RPM; so from what's been said, I take it that it will be good enough for a 1.85 - 2.00 GHz processor?
Click to expand...
It should be good enough, yes.
As long as it has a good airflow rating, which it should.
 
Yeah try the new CPU with that Heatsink and Fan and see what the temperatures are like, if they're around what you have now (maybe slightly higher) then that's fine. If they start to rise quickly when idle then turn the computer off immediately. This shouldn't be a problem though as a fan like that should provide adequate airflow over the heatsink.
 
For reference, my AMD 2200+ sat idle @ about 25-30'c... but that was with one BIG heatsink!

To make sure make sure that the temps dont go nuts when you hit 100% run a benchmark, compress large amounts of files or join the Hardwareforums folding@home team!

Each one of thoose will keep for CPU @ 100% for a fair while, and you will see what temps your CPU hits under full load!

PS join the HWF F@H team anyway!
 
Impotence said:
For reference, my AMD 2200+ sat idle @ about 25-30'c... but that was with one BIG heatsink!

To make sure make sure that the temps dont go nuts when you hit 100% run a benchmark, compress large amounts of files or join the Hardwareforums folding@home team!

Each one of thoose will keep for CPU @ 100% for a fair while, and you will see what temps your CPU hits under full load!

PS join the HWF F@H team anyway!
Click to expand...

Hi, Impotence.

Yes, I'll keep monitoring the temperature when I install the new chip to see how things go.

My current Athlon XP 1.25 GHz is running idle at around 49c, as far as the SpeedFan 4.28 monitoring tool says http://www.almico.com/speedfan.php In fact, it gives 3 temperature readings: Temp 1, 49c Temp 2, 38c & Temp 3 - now this one fluctuates wildly sometimes. Apparently, this is all right - well, as far as I've read in the Help Files. I'll have a good read at a latter stage.

Cheers,

Dave

P.S.

I think I have a 'budget priced' fan at the moment. However, it runs at around 2900 - 2960 RPM, and has worked very well with my current chip - no problems, for over 4 years.
 
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