CPU的C1 C2 C3状态是指什么。。
\u5728\u4e03\u5f69\u8679c.h81m.hd\u4e3b\u677f\u91cc\u7684BIOS\u91cccpu\u4e00\u9879\u91ccc1 c2 c3 c6 c7\uff0c\u5206\u522bC1: \u6240\u6709x86 cpu\u90fd\u6709\u4e00\u4e2a\u6307\u4ee4 "HLT",\u5b83\u7684\u4f5c\u7528\u662f\u8ba9CPU\u95f2\u7f6e(idle)\uff0c\u4ec0\u4e48\u90fd\u4e0d\u505a\u3002\u4e00\u65e6\u6709\u65b0\u7684\u6307\u4ee4\uff08\u4e00\u4e2a\u786c\u4ef6\u53d1\u9001\u7684\u4fe1\u53f7\uff09,\u4fbf\u4f1a\u6062\u590d\u5230\u6b63\u5e38\u5de5\u4f5c\u6c34\u5e73.
\u81ea486DX4\u5904\u7406\u5668\u4ee5\u6765\uff0cintel\u5de5\u7a0b\u5e08\u5c06"HLT"\u6307\u4ee4\u5347\u7ea7\u6210\u201cAuto Halt\u201d\uff0c\u4e5f\u5c31\u662f\u73b0\u5728\u7684C1\u72b6\u6001\u3002C1\u72b6\u6001\u4e0bCPU\u4f1a\u5728\u6ca1\u6709\u4efb\u52a1\u7684\u65f6\u5019\u81ea\u52a8\u95f2\u7f6e\uff0c
\u5185\u90e8\u65f6\u949f\u5173\u95ed\u3002\u4f46\u603b\u7ebf\u63a5\u53e3\u548c\u9ad8\u7ea7\u53ef\u7f16\u7a0b\u4e2d\u65ad\u63a7\u5236\u5668\uff08APIC\uff09\u4ecd\u5728\u5de5\u4f5c\u3002C1\u8fd8\u6709\u4e00\u4e2a\u5b50\u6a21\u5f0fC1E\uff0c\u5b83\u548cC1\u5176\u4ed6\u529f\u80fd\u4e00\u6837\uff0c\u9664\u4e86\u5728\u6062\u590d\u5de5\u4f5c\u65f6cpu
\u4f7f\u7528\u6700\u4f4e\u5de5\u4f5c\u7535\u538b\uff0c\u800c\u4e0d\u662f\u6ee1\u8f7d\u7535\u538b\u3002
C2: C2\u548cC1\u529f\u80fd\u7c7b\u4f3c\uff0c\u9664\u4e86C2\u591a\u4e86\u4e00\u6761\u4fe1\u53f7\u201cSTPCLK\u201d\u3002\u5dee\u522b\u662f\uff0cC1\u7684\u201cAuto Halt\u201d\u662f\u8f6f\u4ef6\u65b9\u5f0f\u5b9e\u73b0\u7684\uff0c\u53d1\u9001\u4e00\u6761\u6307\u4ee4\u3002\u800c\u4fe1\u53f7\u201cSTPCLK\u201d\u662f\u901a
\u8fc7\u786c\u4ef6\u53d1\u9001\u3002\u4eceCore 2 Duo\u5f00\u59cb\u91c7\u7528C2\u7684\u5347\u7ea7\u7248C2E\uff0c\u4f46\u5728\u6700\u65b0\u7684intel\u7b2c\u56db\u4ee3cpu\u6570\u636e\u8868\u91cc\u770b\u4e0d\u5230C2/C2E\u72b6\u6001\uff0c\u4e00\u90e8\u5206C2\u7684\u529f\u80fd\u88ab\u5f52\u7c7b\u5230C3\u91cc\u53bb\u4e86\u3002
C3: C3\u4e5f\u88ab\u79f0\u4e3a\u7761\u7720\u72b6\u6001\u201cSleep state\u201d\uff0c\u7b2c\u4e00\u6b21\u4f7f\u7528\u8fd8\u662f\u5954\u817eII\u548c\u7b2c\u4e00\u4ee3\u901f\u9f99\u65f6\u4ee3\u3002CPU\u9996\u5148\u4f1a\u8fdb\u5165C2\u72b6\u6001\uff0c\u7136\u540e\u6fc0\u6d3b\u4e00\u4e2a\u4fe1\u53f7\u201cSLP/DPSLP\u201d\uff0c
\u518d\u8fdb\u5165C3\u3002C3\u6a21\u5f0f\u4e0b\u6838\u5fc3\u6240\u6709\u5185\u90e8\u65f6\u949f\u88ab\u5173\u95ed\uff0c\u5305\u62ec\u603b\u7ebf\u63a5\u53e3\u548cAPIC\u3002\u5916\u90e8\u65f6\u949f\u4e5f\u4f1a\u4e2d\u65ad\u5982\u679c\u8bc6\u522b\u7801\u662fDPSLP\uff08SLP\u548cDPSLP\u53d6\u51b3\u4e8e\u4e0d\u540c\u7684\u4e3b\u677f\uff09\u3002
\u540c\u65f6\u5c06cpu\u7684\u4e00\u7ea7\uff0c\u4e8c\u7ea7\u7f13\u5b58\u90fd\u632a\u5230\u4e09\u7ea7\u5171\u4eab\u7f13\u5b58\u91cc\uff0c\u5e76\u6e05\u7a7a\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u7761\u7720\u72b6\u6001\u4e0bcpu\u65e0\u6cd5\u54cd\u5e94\u4efb\u4f55\u5916\u90e8\u603b\u7ebf\u6216\u4e2d\u65ad\u7684\u8bf7\u6c42\uff0c\u4e5f\u5c31\u662f\u5f7b\u5e95\u7761\u4e86\u3002
C4\uff1aC1\uff0cC2\u548cC3\u4e3b\u8981\u662f\u5bf9\u65f6\u949f\u4e0b\u624b\uff0c\u800cC4\u5219\u5f00\u59cb\u5bf9cpu\u7535\u538b\u52a8\u5200\u4e86\u3002C4\u4e5f\u88ab\u79f0\u4e3a \u66f4\u6df1\u5ea6\u7761\u7720\u72b6\u6001Deeper Sleep state,\uff08\u4e0d\u77e5\u9053\u600e\u4e48\u7ffb\u6bd4\u8f83\u5408\u9002\uff09\uff0c
\u7b2c\u4e00\u6b21\u4f7f\u7528C4\u662f\u5728\u8fc5\u9a70\u4e0a\u7684\u5954\u817eM\u5904\u7406\u5668\u3002C4\u662fcpu\u8fdb\u5165C3\u7761\u7720\u540e\u4e0b\u8c03\u5185\u90e8\u7535\u538b\u8fbe\u6210\u7684\uff0c\u786c\u4ef6\u4fe1\u53f7"DPRSTP"\u3002
C6\uff1aC6\u662f\u8f83\u65b0\u7684\u4e00\u79cd\u8282\u80fd\u72b6\u6001\uff0c\u81eaCore2 Duo\u5f00\u59cb\u88c5\u5907\u3002cpu\u8fdb\u5165\u8fd9\u4e2a\u72b6\u6001\u540e\uff0c\u4f1a\u5c06cpu\u6838\u5fc3\uff08\u53ef\u4ee5\u662f\u5355\u4e00\u7684\u6838\u5fc3\uff09\u91cc\u6240\u6709\u7684\u5bc4\u5b58\u5668\u6570\u636e\u632a\u5230\u4e00\u4e2a
SRAM\uff08\u9759\u6001\u5185\u5b58\uff09\u91cc\u53bb\u3002\u7136\u540e\u8be5\u6838\u5fc3\u5c31\u53ef\u4ee5\u4efb\u541b\u5904\u7f6e\u4e86\uff0c\u6bd4\u5982\u628a\u7535\u538b\u8bbe\u4e3a0V\u3002\u5728\u6062\u590d\u7684\u65f6\u5019\uff0c\u518d\u628a\u4e4b\u524d\u7684\u6570\u636e\u4eceSRAM\u642c\u56de\u6838\u5fc3\u7684\u5bc4\u5b58\u5668\u91cc\u3002\u771f\u6b63
\u610f\u4e49\u4e0a\u5355\u72ec\u5173\u95ed\u4e00\u4e2a\u6838\u5fc3\u53d8\u4e3a\u53ef\u80fd\uff08\u9700\u8981Nehalem\u6838\u5fc3\u6216\u66f4\u65b0CPU\u624d\u80fd\u652f\u6301\uff09
C7\uff1a C7\u548cC6\u51e0\u4e4e\u662f\u4e00\u6a21\u4e00\u6837\u7684\uff0c\u9664\u4e86\uff0c\u5f53\u6700\u540e\u4e00\u4e2a\u6838\u5fc3\u8fdb\u5165C7\u72b6\u6001\u65f6\uff0c\u8be5\u6838\u5fc3\u8fd8\u8981\u628a\u4e09\u7ea7\u7f13\u5b58\u632a\u8d70\uff0c\u6e05\u7a7a\uff0c\u7136\u540e\u964d\u538b\uff08\u6216\u65ad\u7535\uff09\u3002\u5728\u9000\u51faC7\u72b6\u6001
\u65f6\uff0c\u4e09\u7ea7\u7f13\u5b58\u5e76\u4e0d\u662f\u7acb\u5373\u5de5\u4f5c\u7684\uff0c\u5fc5\u987b\u628a\u6570\u636e\u8bfb\u56de\uff08\u8be5\u53bb\u54ea\u53bb\u54ea\u513f\uff09\uff0cCPU\u6b63\u5f0f\u53ef\u4ee5\u5de5\u4f5c\u4e86\u4e4b\u540e\uff0cL3\u624d\u5f00\u59cb\u5de5\u4f5c\u3002\u8fd9\u6837\u7684\u597d\u5904\u662f\uff0c\u5982\u679c\u9000\u51fa\u4e4b\u540e\u9a6c\u4e0a
\u53c8\u8981\u8fdb\u5165C7\uff0c\u90a3L3\u5c31\u4e0d\u5fc5\u53cd\u590d\u5012\u817e\u4e86\u3002
C3 \u72b6\u6001\uff08\u6df1\u5ea6\u7761\u7720\uff09
\u603b\u7ebf\u9891\u7387\u548c PLL \u5747\u88ab\u9501\u5b9a
\u5728\u591a\u6838\u5fc3\u7cfb\u7edf\u4e0b\uff0c\u7f13\u5b58\u65e0\u6548
\u5728\u5355\u6838\u5fc3\u7cfb\u7edf\u4e0b\uff0c\u5185\u5b58\u88ab\u5173\u95ed\uff0c\u4f46\u7f13\u5b58\u4ecd\u6709\u6548
\u53ef\u4ee5\u8282\u7701 70% \u7684 CPU \u529f\u8017\uff0c\u4f46\u5e73\u53f0\u529f\u8017\u6bd4 C2 \u72b6\u6001\u4e0b\u5927\u4e00\u4e9b
\u5524\u9192\u65f6\u95f4\u9700\u8981 50 \u5fae\u79d2
C6 \u72b6\u6001
\u4e8c\u7ea7\u7f13\u5b58\u51cf\u81f3\u96f6\u540e\uff0c CPU \u7684\u6838\u5fc3\u7535\u538b\u66f4\u4f4e
\u4e0d\u4fdd\u5b58 CPU context
\u529f\u8017\u672a\u77e5\uff0c\u975e\u5e38\u4f4e\u63a5\u8fd1\u96f6
\u5524\u9192\u65f6\u95f4\u672a\u77e5
C3\uff0cC6\u4f5c\u7528\u90fd\u662f\u5728\u7cfb\u7edf\u7a7a\u95f2\u662f\u964d\u9891\u7387\u548c\u7535\u538b\uff0c\u4e0d\u662f\u5c0f\u8d85\u7684\u8bdd\u5168\u5173
\u8fd9\u4e2a\u90fd\u662fCPU\u4f4e\u529f\u8017\u8282\u80fd\u6a21\u5f0f\uff0c\u4e0d\u8d85\u9891\u7684\u8bdd\u4e0d\u7528\u5173\u5b83\uff0c\u5982\u679c\u8d85\u9891\u5efa\u8bae\u90fd\u5173\u6389
\u6253\u5f00\u4e4b\u540e\uff0ccpu\u7a7a\u95f2\u7684\u65f6\u5019\u80fd\u8fdb\u5165c2/c3 state\uff0c\u4e5f\u5c31\u662f\u80fd\u66f4\u7701\u7535
\u4e0d\u662f\u534e\u7855\u7684\uff0cintel\u7684\uff0ccpu\u53ea\u6709\u5728\u201c\u7a7a\u95f2\u201d\u7684\u65f6\u5019\u624d\u4f1a\u8fdb\u5165c2/c3
\u4e00\u822c\u7684speedstep\u53ea\u662f\u8fdb\u5165c1,c2/c3\u4f1a\u66f4\u8282\u80fd
一般台式机CPU支持C0,C1 笔记本最少支持到C2
扩展阅读：安全员证c1c2c3哪个好 ... c1车型一览表 ... c1开的货车全部车型 ... cpu enhanced halt c1e ... cpu进入c10状态 ... 睿频cpu c3 c6需要开吗 ... c13正常值对照表 ... c1证全部车型图 ... cpu进入c3 c6状态开吗 ...
