The Zalman Twins: 9500 & 9700 Air Tunnels
by Wesley Fink on February 19, 2007 12:40 AM EST- Posted in
- Cases/Cooling/PSUs
CPU Cooling Test Configuration
The standard test bed for cooling tests uses an EVGA NVIDIA 680i SLI motherboard. This is primarily based on the consistent test results on this board and the excellent NVIDIA Monitor temperature measurement utility, which is part of the nTune program.
NVIDIA Monitor has a drop-down pane for temperature measurement which reports CPU, System, and GPU results. Reviews at this point will concentrate primarily on CPU temperature. In addition to the real-time temperature measurement, NVIDIA Monitor also has a logging feature which can record temperature to a file in standard increments (we selected every 4 seconds). This allows recording of temperatures during testing and play back, for example, of stress test results that can then be examined when the stress tests are completed. There is also the handy reference of speeds and voltages in the top pane to confirm the test setup.
Other components in the cooling test bed are generally the same as those used in our motherboard and memory test bed:
| Cooling Performance Test Configuration | |
| Processor | Intel Core 2 Duo X6800 (x2, 2.93GHz, 4MB Unified Cache) |
| RAM | 2x1GB Corsair Dominator PC2-8888 (DDR2-1111) |
| Hard Drive(s) | Hitachi 250GB SATA2 enabled (16MB Buffer) |
| Video Card: | 1 x EVGA 7900GTX - All Standard Tests |
| Platform Drivers: | NVIDIA 9.53 |
| NVIDIA nTune: | 5.05.22.00 (1/16/2007) |
| Video Drivers: | NVIDIA 93.71 |
| CPU Cooling: | Zalman CNPS9700 Zalman CNPS9500 Cooler Master Hyper 6+ Vigor Monsoon II Lite Thermalright MST-9775 Scythe Katana Tuniq Tower 120 Intel Stock HSF for X6800 |
| Power Supply: | OCZ PowerStream 520W |
| Motherboards: | EVGA nForce 680i SLI (NVIDIA 680i) |
| Operating System(s): | Windows XP Professional SP2 |
| BIOS | Award P24 (1/12/2007) |
All cooling tests are run with the components mounted in a standard mid-tower case. The idle and stress temperature tests are run with the case closed and standing as it would in most home setups. We do not use auxiliary fans in the test cooling case, except for the north bridge fan attached to the 680i for overclocking.
We first tested the stock Intel cooler at standard X6800 speed, measuring the CPU temperature at idle and while the CPU was being stressed. We stressed the CPU by running continuous loops of the Far Cry River demo. The same tests were repeated at the highest stable overclock we could achieve with the stock cooler. Stable in this case meant the ability to handle our Far Cry looping for at least 30 minutes.
The same tests were then run on the cooler under test at stock, highest stock cooler OC speed (3.73GHz), and the highest OC that could be achieved in the same setup with the cooler being tested. This allows measurement of the cooling efficiency of the test unit compared to stock and the improvement in overclocking capabilities, if any, from using the test cooler.
Noise Levels
In addition to cooling efficiency and overclocking abilities, users shopping for CPU cooling solutions may also be interested in the noise levels of the cooling devices they are considering. Noise levels are measured with the case open on its side and are measured using a C.E.M. DT-8850 Sound Level meter. This meter allows accurate sound level measurements from 35bdB to 130dB with a resolution of 0.1dB and an accuracy of 1.5dB. This is sufficient for our needs in these tests, as measurement starts at the level of a relatively quiet room. Our own test room, with all computers and fans turned off, has a room noise level of 36.4dB.
Our procedures for measuring cooling system noise are described on page seven along with noise results comparing the stock Intel cooler and recently tested CPU coolers to the Zalman CNPS9500 and CNPS9700 coolers.
Facebook
Twitter
RSS
50 Comments
View All Comments
Operandi - Monday, February 19, 2007 - link
Yes 10dBA (not 3) is generally perceived as twice as loud.3dBA is double the sound energy but because the scale is logarithmic doubling the energy is not heard to the human ear as twice as loud. For example two 9700s would be 3dBA louder then one but would not be considered twice as loud.
jcarle - Monday, February 19, 2007 - link
The person who wrote the article is an idiot... why? Because the CNPS9700 has been available for purchase for MONTHS. It is NOT a new product...Wesley Fink - Monday, February 19, 2007 - link
The 9500 has been available for quite a while. We first saw the 9700 announced in late October/early Novermber. It was shown by Zalman at CES in early January and we reported the 9700 in our CES coverage and provided pictures.wolf68k - Monday, February 19, 2007 - link
...from that review. They showed how effective the Zalman, and others, are at cooling for both idle and stress. They also showed coolers noise levels at high and slow speeds. But they didn't show how effective they are at cooling for those various speeds.I use to have a Thermaltake Volcano 12+. At high speed it was very good at cooling, but loud as hell. At the lowest speed it was very quiet but the cooling sucked, I got better cooling with the stock cooler. And there's my point. The Tuniq Tower 120 showed to be a better cooler than the Zalman, but that's at high speed and where it's loud as hell. So how good is it compared to the Zalman, and the other coolers, at each of their lowest speeds?
Operandi - Monday, February 19, 2007 - link
The 9700 and 9500 both do very well with their fans running at reduced speed, you can take a look in this http://www.frostytech.com/articleview.cfm?articlei...">FrostyTech review. You'll see that there is a relatively small penalty in performance with the fan at at it's lowest setting and relatively little gain in performance at highest.These heatsinks are not designed for the overclocker they designed for low noise/performance cooling.
strikeback03 - Monday, February 19, 2007 - link
Any idea why the Tuniq seems to be out-of-stock pretty much everywhere? I have purchased all my other components except a cooler.For an E6600 running near stock X6800 speeds at most, am I correct in assuming one of the Zalmans would provide cooling reasonably close to the Tuniq, as they are actually available?
LoneWolf15 - Monday, February 19, 2007 - link
When your cooler is considered the best, and for reasonable prices (at least in the realm of air cooling), your product remains in demand.Best bet --put a watch on the product at NewEgg, when it comes in stock, they'll e-mail you. That's what I did, fortunately it was in within 24-48 hours. Otherwise, FrozenCPU might have it.
If you're running stock speeds with a Core2 Duo/Quad, there is little reason to buy a fancy cooler, you might as well stick with stock. I'd advise looking into ways to keep the ambient temperature of your case down through better fans instead; if that's not an issue, then why spend the $50-60?
JarredWalton - Monday, February 19, 2007 - link
Try http://www.xpcgear.com/tuniqtower120.html">these guys Or just look at http://froogle.google.com/froogle?hl=en&q=%22t...">Froogle.strikeback03 - Monday, February 19, 2007 - link
I did end up buying one from one of the Froogle companies I had never heard of. Kinda odd though that most of the links from Froogle are OOS though, and following the "Find the lowest prices" link in the Tuniq review eventually states that the item is no longer available.The room the computer will be used in will likely see temperatures over 30C, which is why I want a cooler which keeps the CPU as close to ambient as possible for a reasonable price.
yyrkoon - Monday, February 19, 2007 - link
Final page, conclusion. Paragraph 2, and 4 both have 'that', that should be 'than'. I will assume this is DNS acting a 'fool' again :)