Sl-120 vs cnps9500

[Operandi]

Originally posted by: alejandroAT
Check out these links Operandi

http://www.gen-x-pc.com/cputemps.htm
http://www.digital-daily.com/cpu/athlon-64-x2-4800/

the first states the max operating temp as 65C and the second as 71C.

Also read this below (the 4800 is also a Toledo core)
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So, what does the ADA4800DAA6CD stand for? With ADA all is clear - it is AMD Desktop Athlon 64. Then there goes the processor's performance index - 4800+. The letter D after the index says that the processors installs on Socket 939. The first letter A indicated the supply voltage 1.3-1.4V. But the second A may be confusing after reading the specifications since it points to the maximum core temperature 71°C (seems like AMD have been overcautious). The number 6 means that the overall L2 cache size is 2048 K, the CD is already familiar to you.
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Could you explain plz where u found this information that the X24400 does not shut down at 70C and that damage is not a possibility?
Also, these cpus do not have an internal temp sensor.....the reading relies on the mb sensor that reads the outter casing temp of the cpu...so the inner temp is always higher.

I'm not even sure if the Athlon64/X2 has a hardware shutdown point, it might be up entirely up to the motherboard to determine when thermal overload has occurred. As for the temp itself 65-70c is spec?d for the sake of stability, not the point at which physical damage can occur. Risk of physical damage doesn?t take place till well over 100-150c.

Also AMD has been using internal thermal sensors since the AthlonXP, so the temp of the Athlon64/X2 is being read off the CPU, not the from a motherboard sensor. Still thermal sensors can always be improved and moved in closer to the core for improved accuracy.

I'm sorry but I don't have links detailing the source of the above information but I am fairly certain it's correct. If you want for sure hard numbers I'm sure there is somebody in the "highly Technical" or "CPU" forum that is more know ledged in the subject then me that can confirm or deny.

 

[JEDIYoda]

Originally posted by: Henny

Originally posted by: JEDIYoda

Originally posted by: Henny

Originally posted by: alejandroAT
hi all,

just recently i changed my Sl120 cpu hs with the zalman cnps9500 in order to achieve better temperatures.

With the Sl120 i was running my x2 4400 at 40C idle and 47C under EXTREME load (2 instances of prime95).

I wasnt happy with 47C so i decided to try out the 9500 everyone is raving about.

Both hs were mounted using AS5.

All i can say is that my cpu now runs at 46C idle and can reach 50C under small load (eg guildwars running).

At first i applied the paste with a plastic card spreading an even and very thin layer on the cpu. Temps were high so after 5 days i cleaned it up using isopropyl alcohol and applied the paste in the form of a rice grain in the middle. Didnt change a thing! still 46C at idle.

The 9500 is supposed to be pushing all the hot air towards the back exhaust fan thus quickly getting rid of the hot air. With the Sl120 the air was pushed through the HS and then spread 360degrees all around .

My question is this: how can a copper hs with such an efficient design and 6 heatpipes have 6C more at idle than an aluminium hs with 5 heatpipes and a no so efficient design?

and dont tell me i have to wait for it to cure cause that will only make a difference of 2-3 degrees.

The 9500 only performs well at full fan speed. For a given noise level it's not best of class by any means.

Henny....you are wrong.
In all the reports I have read and in my own personnal experience the 9500 works best with the fan throttled down.
Just do an internet search of reviews for the 9500 and you will see thats the case.

If this review is accurate, the 9500 is among the worst performers (even worse then Intel Stock HSF) on low but best on high:

Here

Actually Henry albeit madshrimp does alot of fantastic reviews SPCR and several others site all back up what I stated concerning Zalman at low fan speeds!
You should never use just one review site to prove your point....becuase anybody find a site that will disprove anything somebody else says you just have to look hard enough...

I have the zalman in my gaming rigg and I truthfully get better temps temps with the low fan speeds. Even though the high fan speed is pretty close temp wise.

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http://www.silentpcreview.com/article267-page5.html
FINAL CONCLUSIONS

The Zalman 9500 provides excellent cooling performance, close to the best that we've tested, the Scythe Ninja, and matches the Thermalright XP-120. It provides this performance even when airflow is reduced by undervolting the fan with the included Fanmate, a feature for which we've long applauded Zalman
However, similar performance could be achieved at a lower noise level with the two heatsinks mentioned above by using a quiet Nexus 120mm fan. By contrast, the fan in the 9500 is a step backwards even from its predecessor, the Zalman 7000, which sounded nicer (if only slightly quieter) at the same voltage.


All in all, the CNPS9500 is an excellent performing heatsink that rivals the best and will be at home even in the most powerful gaming systems. Although it is more expensive than either the Scythe Ninja or the Thermalright XP-120, keep in mind that neither of these includes either a fan or a fan controller. The CNPS9500 includes both of these, making it more complete and user friendly.

Pros

* Top-notch cooling performance
* Support for all recent CPU platforms
* Excellent low-airflow performance* Included fan controller
* Low weight for an all-copper design
Cons

* Fan could be quieter
* Pricy
* Too big for some cases
* Complex Installation
**************************************************

http://www.xbitlabs.com/articles/coolers/display/5-cool_4.html

The first three positions are very close to each other, but two leaders are obvious: Zalman CNPS9500 LED and Scythe Ninja . The position of the CNPS9500 LED is rather ambiguous ? if you increase its fan speed to the maximum of 2600rpm, this cooler will probably become an absolute leader,**** note with the fan throttled down it was still only .5c higher than the scythe Ninja..

*******************************************************
http://www.bit-tech.net/hardware/2005/08/18/zalman_asetek_cooler/4.html

Performance: So, the results are fairly self-explanatory. The Zalman, once we'd corrected the base fitting problem, performed well, keeping our roasting FX-55 at low levels. It was easily the coolest here. The Microchill performed well, especially at the low noise setting. At that setting, it is silent, but still performing as well as the stock AMD cooler.

In short, the Asetek will keep your chip silent and cool, whilst the Zalman is a bit better for overclocking.

Noise: In terms of noise levels, the AMD was definitely louder than the others, sporting a faster, smaller fan. Zalman is louder than the Microchill with both on full power, but not by a huge amount. With the fan controllers both Zalman and Asetek supply with their coolers, you can have the fans on near-silent - Zalman works well here, because running silent it's about as cool as the Asetek running on full, and a little quieter. With the low noise fan set to minimum, the Microchill was easily the quietest, whilst still keeping our FX-55 well within

***************************************

http://www.viperlair.com/reviews/coolin.../heatsinks/zalman/cnps9500/index.shtml

Final Words

Up until recently, I would have said there would be no way any air cooler would match the performance of the asetek VapoChill Micro, but today the Zalman CNPS9500 LED heatsink did so, and did so quietly. What is quite amazing is the Zalman manages this at very low noise levels.

At the lowest speeds, the Zalman is a mere 1°C warmer than the asetek cooler on the AMD platform, and matched the performance of the asetek on the Intel platform. As mentioned earlier, the low fan speed is actually quieter than the asetek low fan speed, so it's a reasonable tradeoff for noise versus performance.

Zalman's high speed is actually quieter than asetek's High-Speed and is 2°C warmer than the VapoChill Micro on the Intel platform and 1°C warmer on the AMD setup.

 

[Rangoric]

I have the fan on max (still testing, havn't... tuned much) but I am getting Idle of 34C and load of 44C with an AM2 4000x2.

The Load was after 15 hours of x2 Prime running.

 

[alejandroAT]

I would like to say here that temperature readings from heatsinks used by people who live in nordic cities (London, NY, Quebec) should not be considered very accurate because these areas have a very low average annual environmental temperature.

I think we all know that you can only cool the cpu below room temp if u use gaz pressure methods (which can also create condensation) which is the same principle as an airconditioner. Simple air cooling cannot do it and that is a law of physics.

So now that the ambient temp is 38C (athens, greece). my cpu can only get as low as 38C at idle!
But by using the 9500 at clocks of 2,2Ghz i get 47C at idle....now that isn;t as good as the 40C idle i got with the SI120.

All things said i have noticed that all ppl who think the 9500 is excellent live in northern countries so i m sorry but i cant take your evaluation seriously as you probably have ambient temperatures of 20-25C at the moment. That means that its not the actual hs that gives u low temps,.......its just that you have cold rooms. If you have a room temperature below 20C then ANY hs, including stock, is perfect.

 

[Rangoric]

Room temp for me is 28-30C. So thats an increase of 4C-6C on Idle for me and 14C-16C on full load.

Having a high Ambient does make sense to make them work differently however.

Your experience is most important