Zalman CNPS9700 LED Big-Ups CPU Cooling : Bigger Really Can Be Better!
Bigger Really Can Be Better!
Bigger Really Can Be Better!

The "bigger is better" concept finds many opponents looking to prove particular circumstances where that assumption doesn’t fit. But when it comes to CPU cooling, bigger really is better as long as the cooler fits the motherboard and case! The reason is obvious: Bigger fans move more air at lower fan speeds, while bigger sinks offer larger surface area, in effect making the fan even more efficient at removing heat.
Often praised for its quality and innovation, Zalman takes the "bigger is better" concept to heart with its CNPS9700 LED, a scaled up version of the popular CNPS9500 LED. A photograph compares the two Zalman designs to an Intel boxed cooler.
The perpendicular design allows the CNPS9700 LED, like its older sibling, to consume a similar amount of board space as the stock cooler, depending on the height of surrounding components. Look for a motherboard compatibility list on Zalman’s product page to appear by its late-October release.
| Model | CNPS9500 LED | CNPS9700 LED |
| Dimensions (L-W-H) | 3.3 x 4.4 x 4.9" 85 x 112 x 125mm | 3.5 x 4.9 x 5.6" 90 x 124 x 142mm |
| Material | Copper Fins/Base/Heat pipes | Copper Fins/Base/Heat pipes |
| Weight | 1.2 lbs 530g | 1.7 lbs 764g |
| Dissipation Area | 3698cm² | 5490cm² |
| Thermal Resistance | 0.16-0.12 °C/W | Unspecified |
| Noise (advertised) | 18.0-27.5db | 19.5-35db |
| Processor | Intel Core 2 Duo E6400, 2.13GHz, 1066 FSB, 2MB Cache Overclocked at 387 MHz system clock (FSB1548), 1.45 V core voltage |
| Motherboard | bit AB9-Pro revision 1.00, BIOS version 1.4 |
| RAM | Corsair CMX512-8000UL 2x 512MB, CAS 4-4-4-8 |
| Hard Drive | Western Digital Raptor WD1500ADFD 150GB, 10,000 RPM, 16MB Cache, SATA 150 |
| Networking | Marvell Yukon Gigabit PHY, enabled, offline |
| Graphics | Sapphire X1900GT 256M PCI-E D-DVI/VIVO GPU: ATI Radeon X1900GT (575MHz) RAM: 256MB GDDR3 (1200MHz) |
| Power Supply | OCZ ModStream OCZ52012U - 520W modular |
| OS | Windows XP Professional 5.1.2600, Service Pack 2 |
| DirectX Version | 9.0c (4.09.0000.0904 |
| Platform Driver | Intel INF 8.1.0.1006 (LGA775) |
| Graphics Driver | ATI Catalyst 6.8 |
Major reasons to use a larger cooler include overclocking and/or noise reduction. We chose overclocking to gauge temperatures, rather than trying to operate the system at its quietest potential noise level. Since we were already in the middle of testing for an overclocking article, it was easy to grab a few temperatures in BIOS before proceeding with that article.
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