MCX603-V™ heatsink for Intel® Xeon™processors (socket 603/604) DISCONTINUED REPLACED BY MCX-VPRO Made in the USA  U.S. patent 6,469,898 Introduction: The MCX603-V™ heatsink is a high performance-low noise thermal solution for Intel® Xeon™ (socket 603/604) processors. 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 (socket 603) processors (does not necessitate removal of the motherboard for installation). Optional screw/spring assembly retention system (requires removal of the motherboard for installation). Optional upgrade kit to Xeon "Nocona" (socket 604) processors 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 MCX603-V™ 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: All (1) Intel® compliant motherboards socket 603 or socket 604 form factor. The product is 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 MCX603-V heatsinks installed side by side, and illustrates the two different mounting mechanisms described in the following chapter. Retention Mechanisms The MCX603-V 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 MCX603-V with this setup does not require removal of the motherboard. click to enlarge Swiftech's optional screw-spring assemblies allow installation of the MCX603-V™ with all Xeon™ compliant motherboards, without any known exceptions (1). Such installation requires removal of the motherboard to retrofit it with Swiftech proprietary retention mechanism composed of 4 standoffs and locknuts. An example is provided below: click to enlarge Part # MCX603-VSR for heatsinks shipped prior to 12-15-03 (see note 2) Part # MCX603-VSR2 for heatsinks shipped after 12-15-03 (see note 2) Part # MCX604-VRK for Xeon "Nocona" is also available for upgrade of all MCX603-V heatsinks versions shipped after 12-15-03 (see note 2) 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 MCX603-V™ 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 MCX603-V™ No provided by motherboard vendors Yes $56.00 MCX603-VSR Optional retention hardware for heatsinks shipped prior to 12-15-03 (see note 2) $6.00 MCX603-VSR2 Optional retention hardware for heatsinks shipped after 12-15-03 (see note 2) $3.95 MCX604-VRK upgrade kit Retention kit upgrade for "Nocona" Xeon processors $4.50 Back to top

Note 1: Information provided at the time of publication, and subject to change without notice. Note 2: Optional spring retention hardware Bracket shipped prior to 12-15 do not feature holes for the spring loaded screws - MCX603-VSR is required Bracket shipped after 12-15-03 feature holes for the spring loaded screws - MCX603-VSR2 is sufficient