MCX-VPro™ Universal heatsink for Intel® Xeon™processors Made in the USA  U.S. patent 6,469,898 Introduction: The MCX-VPro™ heatsink is a high performance-low noise thermal solution for Intel® Xeon™ processors. It replaces the MCX603-V and MCX604-V heatsinks, and includes retentions mechanisms for all know Xeon™ compatible motherboards. Features highlights Optimized performance characteristics at the lowest possible audible noise levels. Full compatibility with all Intel® Xeon retention systems, thanks to three different retention solutions: Plug-and-play installation with Intel's validated retention mechanisms for OEM processors (400 & 533 Mhz FSB motherboards), does not necessitate removal of the motherboard for installation. The Swiftech proprietary screw/spring assembly retention system (for 400 & 533 Mhz FSB motherboards) is favored by professionals and system integrators for its sturdiness, but requires removal of the motherboard for installation of the heatsink. Mounting hardware for Xeon "Nocona" class processors using the newest 800Mhz FSB motherboards Hybrid copper base, thin aluminum pin heatsink: the massive 1/2" thick copper base provides superior heat capacity for unparalleled stability in extreme overclocking applications. The thin aluminum pins promote increased turbulence for more efficient heat dissipation compared to traditional fin extrusions. Patented Helicoid pin design (U.S. patent 6,469,898): pins are individually machined in an helicoid shape, to increase their surface area, and further enhance heat dissipation efficiency. Several patents pending for concentrically aligned rows of pins, bent at multiple angles. The spacing and angles between the concentric rows has been precisely calculated to optimize cooling and reduce noise at air flow levels as low as 22 CFM and 23 dbA. The MCX-VPro™ is designed to work with 80mm fans only. In effect, there is not enough space between processors in most dual Xeon™ motherboards to accomodate two 92mm fans side by side. Quick and easy fan installation: the fan installs "in a snap" with convenient snap-in rivets. Exceptional quality and attention to details: the heatsink base is lapped to 0.0003" (3/10 of 1/1000"), and polished to near-mirror finish to promote optimum thermal conductivity. Users are advised that while flatness is strictly respected for providing the most significant benefit to thermal interface, surface polish is a cosmetic component and may vary slightly from one heatsink to another. Re-lapping or polishing the heatsink base is never recommended. Asymetric pin design to allow multiprocessor installations Back to top Motherboard and CPU compatibility Processor Compatibility: All Intel® Xeon® processors Motherboard compatibility: There are basically two motherboard form factors for Xeon processors at the time of publication. The hole spacing on the motherboard is the same for both, but the retention mechanism is significantly different. Motherboards running at 400 and 533Mhz FSB are the original mounting style, and motherboards running at 800 Mhz FSB use the new mounting style. The MCX-VPro includes mounting hardware for both styles. The product is also specially designed to allow installation with motherbards were CPU are located side-by-side, as shown below. Note that in such cases, 92mm fans cannot be used. This picture shows 2 MCX-VPro heatsinks installed side by side, and illustrates the two different mounting mechanisms described in the following chapter. Retention Mechanisms The MCX-VPro ships with two brackets designed to allow plug-and-play installation with OEM version Xeon™ processors. Intel's validated solution for OEM processors sold without a heatsink consists in two plastic retention frames and spring clips (shown in the example below), which the motherboard manufacturers normally provide. Installation of the MCX-VPro with this setup does not require removal of the motherboard. click to enlarge Following their preference, users can utilize Swiftech's screw-spring retention systen, which allows installation of the MCX-VPro™ with all 400 and 533Mhz FSB Xeon™ compliant motherboards, without any known exceptions . Such installation requires removal of the motherboard . An example is provided below: click to enlarge Installation with "Nocona" class Xeon processors using 800Mhz FSB Motherboards The kit includes the hardware necessary to install the heatsink on the latest 800Mhz FSB motherboards (Xeon code name "Nocona") . Back to top Performance data Suggested fans. Because this product is intended to cover the widest possible variety of uses, from virtually silent operations all the way to extreme overclocking, it is sold without fan. For user convenience, we separate all our bench tests into 3 distinct categories characterized by the fan's audible noise level: Silent to low noise operations 22 to 28 dbA: For non-overclocked processors. The MCX-VPro™ surpasses all known temperature specifications published by Intel® to this date. Medium noise operations: 29 dbA to 40 dbA - From mild to serious overclocking levels depending on the fan selected, or high temperature environments. Up to 100 Watts processor load. High noise operations: 40 dbA and up - From serious to extreme overclocking depending on the fan selected, up to 130 Watts processor load. Silent to low noise category - Lower C/W is better Brand Size (mm) Part # CFM dbA Heatsink-fan °C/Watts ratio (*) Vantec 92x25 SF9225L 28 20 0.333 Mechatronics 92x25 E9225S12B 29 24 0.307 Sunon 80x25 KD1208PTB4 25 23.4 0.307 NMB 80X25 3110NL-04W-B20 26.5 22.5 .291 Delta 80x25 AFB0812M 31.4 28 .250 Medium noise category - Lower C/W is better Brand Part # CFM dbA Heatsink-fan °C/Watts ratio (*) Sanyo Denki 92x32 109P0912H201 55.1 36 0.220 Delta 80x25 AFB0812HH 37.4 34 0.226 High noise category - Lower C/W is better Brand Part # CFM dbA Heatsink-fan °C/Watts ratio (*) Vantec 92x38 TD9238A 119 56.4 0.149 Vantec 80x38 TD8038H 84.1 55.2 0.145 * C/Ws shown are the heat sink to air values, excluding thermal resistance of the TIM joint, which will vary depending on the thermal interface used and bench test conditions. For reference, Swiftech's TIM joint bench test value is 0.09°C/W. All tests are performed in an environmental chamber using Industry standard procedures, and calibrated equipment. Back to top Specifications  heatsink CNC machined, C110 copper base, 3"W x 3.3"L x .500"H, flatness better than 0.0003", micro surface finish 8 or better. 374 Helicoid Pins made of High Thermal Conductivity Aluminum Alloy, press fitted in the base. Heatsink base dimensions 3"x3.3"x1.66" Heatsink top dimension 3 3/4" x 3 1/2" Weight: 22 oz (620g) Back to top Suggested Retail Pricing Please consult your Swiftech distributor prior to ordering direct from us, or purchase the product factory direct here MODEL Factory bundled-FAN Mounting Hardware MSRP in US$ Motherboard retention Fan hardware for 80 mm fans MCX-VPro™ No all known Xeon processors Yes $62.95 Back to top

Note 1: Information provided at the time of publication, and subject to change without notice.