| Core Speed | Chipsets Supported | L2 Cache | External Bus Speed (MHz) | Thermal Design Power | Voltage | Tcase | Product Number | Package | 2.5 GHz | Intel® 875P, 865G, 852GME, 845GV, and 845 | 128KB | 400 | 61.0W (TDP) | 1.475-1.525V | 72° C | RK80532RC060128 | FC-PGA2 478-pin | 2.0 GHz | Intel® 875P, 865G, 852GME, 845GV, and 845 chipsets | 128KB | 400 | 52.8W (TDP) | 1.475-1.525V | 68° C | RK80532RC041128 | FC-PGA2 478-pin | 1.66 GHz / 1.83 GHz | Intel® E7520 and 3100 chipsets | 1MB | 667 | 27W | 1.1125V – 1.275V | 100° C† | LF80538KF0281M/ LF80538KF0341M | 478 µFC-PGA | 1.2 GHz | Intel® 815E, 815, and 810E2 chipsets | 256KB | 100 | 32.1W | 1.5V | 70° C | RK80530RY009256 | 370 FC-PGA2 | 850 MHz | Intel® 815E, 815, 810E2, 810, and 440BX chipsets | 128KB | 100 | 25.7W | 1.75V | 80° C† | RB80526RY850128 | 370 FC-PGA | 733 MHz | Intel® 815E, 815, 810E2, 810, and 440BX chipsets | 128KB | 66 | 22.8W | 1.75V | 80° C† | RB80526RX733128 | 370 FC-PGA | 566 MHz | Intel® 815E, 815, 810E2, 810, and 440BX chipsets | 128KB | 66 | 19.2W | 1.75V | 90° C† | RB80526RX566128 | 370 FC-PGA | 433 MHz | Intel® 810E2, 810, and 440BX chipsets | 128KB | 66 | 24.1W | 2.0V | 5-85° C | FV80524RX433128 | 370 PPGA | 366 MHz | Intel® 810E2, 810, and 440BX chipsets | 128KB | 66 | 21.7W | 2.0V | 5-85° C | FV80524RX366128 | 370 PPGA | 300A MHz | Intel® 810E2, 810, and 440BX chipsets | 128KB | 66 | 17.8W | 2.0V | 5-85° C | FV80524RX300128 | 370 PPGA | † = Tjunction, not Tcase |
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