关于 Intel Pentium II OverDrive
Intel Pentium II OverDrive 是专门给 Pentium Pro 主机升级用的中央处理器（CPU）。PPro 150MHz 与 180MHz 主机可以升级到 PII 300Mhz，PPro 166MHz 与 200MHz 主机可以升级到 PII 333MHz（PPro 133MHz 不知道怎么办）。不过这产品其实并不常见，因为Pentium Pro 本身是给服务器用的比较多，个人使用者当时也已经有 Pentium III 可以选择了。不过这颗 CPU 也支持双微处理器架构喔。
Introduction
The Pentium II OverDrive is a processor upgrade designed for Pentium Pro (Socket 8) based systems. By using the 0.25 micron Deschutes core of the Pentium II, Intel managed to put a quick end to the 16-bit weakness of the Pentium Pro, and in doing so, they also managed to double the amount of L1 cache on the processor to 32KB. The PII OverDrive is nothing more than a Pentium II Xeon on a smaller scale, using the Pentium II’s design to place the L2 cache externally off of the CPU, but on a card that would allow it to operate at the same clock speed as the CPU itself. The chip has a built in clock multiplier of 5.0x, and it derives its clock speed based on the motherboard’s set FSB frequency, so on a 60Mhz board (150/180MHz Pentium Pro systems) the processor operates at 300MHz, on 66MHz systems (166/200MHz Pentium Pro) at 333MHz.
产品展示
Intel Pentium II OverDrive
| 参数 | 数值 |
|---|---|
| CPU 类型 | 387-pin sPPGA |
| Socket | 8 |
| 主频 | 300 / 333 MHz |
| 外频 | 60 / 66 MHz |
| 倍频 | x 5.0 |
| 总线宽度 | 64/32 Bit |
| 一级缓存 | 32 Kb (16/16) |
| 二级缓存 | 512 Kb |
| 晶体管 | 7,500,000 |
| 技术 | 0.25 µm |
| 电压 | 2.0(Core) / 3.3(I/O) V |
| 步进 | SL2KE |
| 生产日期 | 20/1999 |
| 上市时间 | 1999.8 |
