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AMD K6-2

K6-2是一個由AMD製造的x86處理器,也是AMD整个奔腾时期最成功的一个处理器序列。K6-2可以在200至550 MHz的時鐘速度運行。它有64Kb一級緩存(32KB指令集和32KB資料),在2.2伏特的電壓下運行。使用0.25微米製程,擁有930萬個電晶體,以及只能使用於處理器插座是Socket 7Super Socket 7的主機版。

K6-2的歷史

AMD K6-2的內部結構。

K6-2设计目的是作为当时比较老、更重要的是比较贵的Intel Pentium II的竞争对手。这两种CPU的性能很相似:K6-2的前代K6趋向于日常计算应用,而Intel的在浮点任务中无疑更强大。K6-2是一款非常成功的CPU,并为AMD提供了市场基础和财政稳定性,为日后发布Athlon做好准备。 K6-2是第一款引入浮点单指令多数据结构(SIMD)指令集——3DNow!的处理器,这套指令集大大推动了执行3维立体处理能力的进步。3D Now!成功打败了Intel在数月后推出的、相似但更复杂的SSE。 几乎所有的K6-2都是在100MHz 前端总线(FSB)的Super 7平台上开发的,这套平台为CPU性能提高提供了基础。在K6-2初期,K6-2 300MHz版本是卖得最好的。这个版本的热卖,为K6-2在市场上造就了一个极好的名声,并与Intel Celeron 300A在市场上剧烈地竞争。Celeron提供了一个小但快的缓存和卓越的浮点运算单元;K6-2提供更快的RAM访问(得益于Super 7主板)和3D Now!的3D绘图能力的扩充。两者不仅热卖,并且吸引的很多双方的支持者使用对方的系统。(在那时候,最快的Pentium II尽管比最快K6-2和Celeron快一点,但价格却高出不少) 由于市场继续向前进,AMD发布了一系列更快的K6-2,而最畅销的型号从最初的300MHz,一直到了500MHz。到了450和500MHz的K6-2成为市场主流的时候,更新、更快的CPU已经占领了高端市场,但K6-2和它的竞争对手Celeron依然在各自公司的CPU种类预算中。K6-2的100MHz FSB的主板允许K6-2还算温柔地抵挡着不断增长的CPU倍频值,并且在剩余的生命依然令人惊奇地在市场上竞争着。

K6-2+

鲜为人知的K6-2+是整合了128KiB二级缓存并采用0.18微米工艺的处理器(从本质上来说,这是K6-III的简化版)。K6-2+是明确为低功耗移动型(但它的發熱量很大)CPU,而且推出的时候正是主流台式机快速转型到诸如Athlon之类的新平台。这款CPU在其目标市场销量一般,但尽管AMD没有努力为其作宣传,K6-2+依然出现在传统台式机市场中销售。台式机版本的K6-2+在市场中完全将Athlon和K6-III的锋芒遮盖着(两者都比K6-2+快多了),甚至连较慢、只便宜一点点的原版K6-2也不例外,因为K6-2更知名和更容易找到匹配的主板。K6-2+最高频率为570MHz。

K6-2的版本

K6-2 (Chomper, 250 nm)

AMD K6-2處理器
  • CPUID: Family 5, Model 8,步进 0
  • 一級緩存:32 + 32 KiB(数据 + 指令)
  • 指令集:MMX3DNow!
  • 插座:Super Socket 7
  • 前端总线:66, 100 MHz
  • 核心電壓:2.2V
  • 首次發表:1998年5月28日
  • 时钟频率:233, 266, 300, 333 & 350 MHz

K6-2 (Chomper Extended (CXT), 250 nm)

  • CPUID: Family 5, Model 8,步进 12
  • 一级缓存:32 + 32 KiB(数据 + 指令)
  • 指令集:MMX3DNow!
  • 插座:Super Socket 7
  • 前端总线:66, 95, 97, 100 MHz
  • 核心電壓:2.0(mobile)/2.2/2.3/2.4V
  • 首次發表:1998年12月16日
  • 时钟频率:266 - 550 MHz

K6-2+ (180 nm)

  • 一級緩存:32 + 32 KiB(数据 + 指令)
  • 二級緩存:128 KiB,全速
  • 指令集:MMX,扩展3DNow!PowerNow!
  • 插座:Super Socket 7
  • 前端总线:100 MHz
  • 核心電壓:2.0 V
  • 首次發表:2000年4月18日
  • 时钟频率:450, 475, 500, 533, 550 & 570 MHz

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