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CNPS9500AT for Intel Socket 775 (Celeron D Pentium 4 Pentium D Core 2 Duo High Performance Ultra Quiet CPU Cooler. This cooler features all the innovative designs and technologiesfound on our popular CNPS9500 LED CPU cooler to provide optimal cooling performance and quite operation. As the official launching partner for NVIDIA latest enthusiast platform we enhanced several features of current CNPS9500 model to be optimized for theAM2.
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Technical Details
- CNPS9500AT for Intel Socket 775 (Celeron D Pentium- computer-fans
- USB to ExpressCard
- JU-EP0012-S1
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By J Lee 417 (CALIFORNIA, CA, USA)
I bought the Zalman CNPS9500 AT to replace the stock heatsink that came with my Intel E8400. My CPU temperature stays between 27-30 degrees Celsius when running light tasks (web surfing, documents, videos). When under load, it can jump up to 36-40 degrees which is not bad (Crysis, FSX, Battlefield 2).
My build:
XFX ATI Radeon HD 4890 1GB, Intel Core 2 Duo Processor E8400 3GHz, GIGABYTE GA-EP45-UD3P, Antec TruePower New TP-550 550W, 4GB Crucial Ballistix DDR2 800 4-4-4-12, Antec 900 Case.
By A. D. Minton (Hampton VA)
OK, so I got my Zalman CNPS9500 AT in today and hooked this baby up and must say I'm impressed with the results. Since I'd already had a Zalman CPU cooler before (CNPS7700-AICu) installation was a breeze since I didn't have to remove the MB again.
It's not as big as the CNPS9700 (good), but it does its job well. The copper base came machined flat, very smooth and shinny. The fan is black in color and has no LED's.
As far as fan noise...quiet, quiet, quiet...even at load. Did I say quiet?
And speaking of the fan, one of the selling points for me was the fact that the cooler comes with a 4-pin Pulse Width Modulation (PWM) fan which allows the motherboard to automatically control the fan's speed. The fan draws power from a 4-pin fan header installed on many of the newer motherboards. This helps to keeps fan noise to a minimum as it will only ramp up when needed. As such, there is no fan mate is included with this CPU cooler. However, 4 pin PWM fans are backwards compatible with 3 pin fan headers...but, you would lose the ability to control the fan speed by plugging a 4 pin PWM into a 3 pin fan header. This is something to consider, especially if your MB does not have a PWM header. In that case, you'll need a cooler with a fan mate/controller to control the fan's speed; otherwise the fan will run at full throttle.
So does it work??? Well, it dropped my CPU temps at least 13C, if not more. No kidding. I have a Core 2 Quad Q6600 (2.4GHz) B3 stepping which I had running at 2.66GHz with idle temps of around 59C in an Antec P182 case with stock fans. With 9500 AT installed, I'm now at 2.9gigs with idle temps of 46C, 75C load with prime 95 running. Some will say this is hot, others will say it's about right. Such is the CPU I have! And yes, this cooler IS rated for Quad Core Processors! Check Zalman's website!!!
If you're not into mega overclocking, don't want fan mates, or huge coolers, this is definitely worth looking into.
Positive: PWM fan, no fan mate, Quiet, sturdy (none of those dumb locking pins), and not too big.
Negative: None found, unless you want to count having to remove the MB for installation.
Overall: 100% satisfied.
By Daniel G. Lebryk
I just completed the installation of this cooler. This is not a job for the feint of heart, it's pretty darn involved. If I hadn't spent about an hour rearranging and neating up my internal cables, the install would have taken around an hour or two.
The fan is not silent, but it is very quiet and has a much more pleasing lower tone than the original equipment Intel fan that came with this computer. So all in all, a very quiet, expensive sounding fan.
Make sure your case meets the specs for this monster. I installed this in a Sony Vaio RB series computer - the last generation of Sony desktop black boxes. The cooler fit with tons of room to spare. But this is an older big case.
The biggest hitch for installation, mounting the darn support bracket. Zalman's instructions are awesome. Very detailed, well written, and easy to follow. The problem I ran into, there was a metal support bracket for the OEM cooler. I thought that would make a great support (metal is always stronger and better than plastic). Trouble is, you can't use it. The threaded nuts on the metal bracket stood up too high for the cooler to actually seat on the CPU. So I actually had to partially remove the motherboard. That was much easier than expected - simply remove my interface cards and unscrew about 8 screws, slide the motherboard back and up, and there was plenty of space to work on the back side bracket.
The biggest problem I ran into was removing that metal bracket. Intel put in these plastic split rings to retain the bracket. You actually have to cut them apart to remove them. After that, clear sailing to the finish line.
The included thermal grease is basically one dose. Spread it over the CPU (I used a cut up credit card for a spreader). Once you start screwing down the fan, it will tend to rotate a bit. That's probably good to make sure the thermal grease is spread out evenly. Make sure you follow the instructions on tightening the screws - a little in front, a little in back until you have seated both screws. You don't want uneven pressure on that CPU chip.
Overall, I really like this cooler. I looks kind of neat with my blue LED fan behind it. Now it's on to playing some games to see how much noise this fan really doesn't make!
An update - I just ran my CPU (Pentium 4 3GHz) at 100% for around 8 hours. The CPU temperature went up 5 degrees F. The fan never got louder, it seemed to run at exactly the same speed the whole time. In fact my DVD drive, which used to get very hot, now only gets warm. This cooler has significantly improved airflow within my case and keeps the CPU very cool. I've come to like the sound from my computer (now the hard drive noise is starting to annoy me, that's how quiet this thing is).
By sentinel
I installed this heatsink/fan yesterday, and I was blown away at how quiet it really is. It replaced the Thermaltake I had installed on my Core Duo which was intolerably loud (48+ dbA). Since the machine in question was a development box that was going to always be on, I needed to be able to hear myself think, not to mention sleep in the same room as the box. Thankfully, the Zalman is near silent when not under heavy CPU load.
Installing the sucker is time-consuming and tricky. Make sure you follow the directions carefully. Also, make sure your motherboard/case/power supply is compatible with this model. It's a very large heatsink. Check out Zalman's website for compatibility details.
Anyway, I highly recommend this cooling solution. It's worth every penny.
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