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AMD Aircooling Round-Up of 2003
JMke writes: "If you want a silent AMD system you almost always have to get yourself a higher-class heatsink. Thermalright and other manufactures have brought out updated products that can keep your CPU cool while keeping the noise down, hardware geek site Madshrimps has published a roundup of the best heatsinks from 2003 that money can buy in 2004, read it here."
The CPU fan is both more important and, generally, quieter than the power supply. It seems quite an unreasonable risk to jeopardize your CPU for a few extra decibels when there are easier, safer ways to quiet down a system.
Usually something as simple as moving the case can make a significant difference.
One thing I found to help keep it quite is to actually clean the dust off the fan blades.
It runs almost completely silent and keeps things impressively cool. Didn't have to buy special thermal grease, either. It's also compatible with Pentium 4's and the Athlon 64. It really is teh uber, and comes with a free fanmate to manually adjust fan speed. However, it is huge and doesn't fit on all motherboards, so buyer beware.
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Conclusion
Let's look at the advantages and disadvantages of the reviewed products
Swiftech MCX462-V
(Provided by: Bacata)
PRO
Plug&Play installation
Easy attachment of both 80&90mm fans
Top end performance in both silent as loud categories
CON
Higher price
The MCX462-V is a true engineering beauty, combining functionality with top performance, the helicoid pin layout allows for very low noise production when using different types of fans. The full copper block provides excellent thermal conduction making overclocking possible even with very silent fans!
Thermalright SP-97
(Provided by: Thermalright)
PRO
1st class performance in all categories
Secure installation
Efficiency increases with the CPU overclock thanks to the heat pipes
CON
Installation requires motherboard removal
The successful formula from the SP-94 Intel heatsink has been brought over to the AMD side of town, and the performance is stunting, providing excellent results no matter what fan is used, it edges out the competition by a comfortable margin!
Thermalright SLK947-U
(Provided by: Bacata)
PRO
Good overall performance
Secure installation
Competitively priced
CON
Installation requires motherboard removal
The "older" SLK947-U still delivers very respectable results, although its performance has been surpassed by the SP-97, it manages to provide the best performance/price ratio in this roundup. If you are on a budget but still want top end air-cooling for your AMD setup then look no further then the latest SLK from Thermalright!
Scythe Kamakaze
(Provided by: Bacata)
PRO
Includes a Fan + Rheobus
Decent performance
CON
Installation method far from perfect on all motherboards
I had a lot of installation issues with this heatsink but that was due to the socket/capacitor layout used by the board on which we did the test. The performance is average, edging out the old PAL8045 by a very small margin.
Evercool MAG-01 & CUF-715CA
(Provided by: Evercool)
PRO
Very easy installation
Decent performance
Silent 70mm fan included
Very competitively priced
CON
Not "strong" enough for overclocking your AMD
Both Evercool heatsink proved to be worthy replacements for the Stock AMD cooler, providing better cooling at lower noise levels while being priced at only ~20! My preference goes out to the MAG-01 as it can be installed on almost all popular Sockets out there from Intel & AMD. The copper/alu mix does have an impact on the performance when compared to the full copper CUF-715CA, but the difference is minimal.
Dan's Data has amazing heat sink reviews. Dan tests each heat sink with a heater simulating the Pentium or Athlon CPU. He publishes the R-theta values for each sink tested and has a very straightforward scientific view of the whole process.
I vote the Coolermaster Aero 7 as my top cooler pick of 2003. It's cheap (under $20), and keeps my XP2000+ 10-15 celcius cooler than the stock heatsink did. I've also read of many people overclocking 2500+ Bartons to 3200+ levels, and the Aero 7 keeps it cool. The best part is you can adjust the cooling at any time, with the dial you can put in any 3.5" bay. I keep mine really low, but if I needed mega cooling, just turn it up (although on max cooling it's loud!) It uses a really weird fan, and I think that might be the secret of its success. Instead of the usual 'sucks from above, blows downwards' type thing, it spins on the same plane as the motherboard, meaning it sucks in air from both sides, and blows it all down. So you get far more air throughput. This means you can turn the RPMs down, and I can cool my overclocked XP2000+ with the fan running at 1600RPM! My old AMD stock cooler was almost 3000RPM, and far noisier. If anyone wants to get one, get the cheaper aluminium one. It actually cools better than the copper one! Why? Because it's a lot bigger than the copper one.. so make sure you have the room ;-) Anyway, a bargain. I hope they come out with one for the 64's.
Then just turn down the fans in your PSU, and you have near silent cooling up to a decent speed :-)
The CPU fan is both more important and, generally, quieter than the power supply.
Not in my experience, usually the CPU fans are 60mm and higher RPM, whereas the power supply is generally larger with a slower RPM. To the first order RPM == noise...
These days there isn't much jeopardy to run a couple degrees hotter for several dB quieter operation. I know that Intel CPUs will throttle down if they get dangerously hot. Frankly I'd rather save my hearing and sanity than the CPU anyway.
One additional annoyance is that most motherboard manufacturers go to the added length of putting unnecessary fans on the board chipset as well. These tend to be small (40mm) and run at stupidly high speeds (6000+ RPM) given the amount of power dissipation they need to counter.
One system I have, a shuttle XPC, doubles up the task of case fan and CPU cooler. I pulled the fan off the board chipset, and also the graphics card (replaced the graphics one with a Zalman passive), pulled the 80mm 5000 RPM Sunon dustbuster fan off the CPU heatsink and replaced it with a 2500 RPM much quieter fan. Now it runs with a total of two fans, CPU and PS, much quieter even at full load. How is this possible without having the thing cook itself ?? simple by underclocking - running the FSB at 190MHz instead of 200MHz. Performance difference is incremental and it runs stable at full load (and its much much quieter).
Well my work desktop runs at around 60 decibels from ~2 feet away. Yes, that's loud. And it's an Intel P3 system from IBM. I want a new desktop PC purely because it's so damn loud... I don't actually need more CPU, memory, or disk.
My home PCs are all AMD, all with the stock fan/hs. The stock AMD fan/hs isn't incredibly noisy, but it certainly isn't the quietest thing out there. The loudest system is really quite bad -- but it's because of a very loud PS fan and several case fans. I'll eventually take some steps to quiet it down, because it is ungodly loud (at least to me).
If you really want to reduce system noise, then check out Silent PC Review. They do some real testing of sound levels and give some pretty solid advice on how to quiet PCs.
I also remove the sheetmetal plates that block off unused slots, and try to use only every other slot.. That lets air blow out in between the expansion cards, preventing a dead air zone.
I use only one 7 inch or 4 inch AC case fan (in a hole cut right thru the face of the case, with a guard on it made out of hardware cloth) at low speed to blow air into the case (I reduce the speed with a small AC capacitor (like used for AC motor running) in series with the AC fan). I blow the air into the case, not draw it out, because I don't want to fight against the powersupply fan.
If you have a lot of fans, the tone from each fan can work together to create what is called a beat frequency, like the complex tones you get if you pluck two or more guitar strings at the same time.
You know that forest people keep talking about where there's nobody around to hear things? I put my computer cases there, and now they don't make any sound at all.
(Unfortunately, one my systems did get destroyed when a tree fell on it.)
I like this site because it reviews all kinds of PC silencing stuff, not just heatsinks/fans. Seems to be modeled on the popular www.storagereview.com site.
Has reviews of...
DIY Systems
Prebuilt Systems
Cases & Damping
Power Supplies
Cooling
Fans & Controls
Storage
Usually something as simple as moving the case can make a significant difference.
It can make a difference in cooling as well.
Last month, while I was visiting a cousin upstate for the holidays, I asked if I could use his computer to check work email. While I was using it, he told me that he had to send it back to Dell twice in 3 months (he had only had it since July) due to a total failure to do anything upon powerup. He then started to go into a rant about how Dell sucks (he does that about every company that fails to meet his ridiculous level of expectations - while I was there, he refused the five large pizzas we ordered one night because the driver forgot the pizza sauce for the breadsticks.)
Anyway, I replied that I had no clue what he was talking about as I had 2 Dells myself and the entire environment at work was Dell and I had never heard of such accusations of bad service and poor quality. He stated that Dell "lied" that the computer was overheating and suggested he may have it in a bad location. I looked at where it was sitting - didn't seem so bad to me, under the desk by a window. Then the furnace kicked on. In between the wall and the computer was a vent for the furnace. He had it there to keep his feet toasty while he was using the computer. I knew my cousin was dumb, but I didn't know he was that stupid.
I felt like taking the computer into protective custody. I don't care if it's an emachines, at least give it a chance to work right before you abuse it.