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 ：a416797  |
Posted：2004-02-24 17:56:00 |
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A:400外頻
B:533外頻
C:800外頻
L2 512KB 快取記憶體
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：mhyue |
Posted：2004-02-25 14:46:00 |
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外頻是 泛指主機板跑的頻率
CPU的頻率是外頻的倍數
如 主機板 前端匯流排是 FSB800
CPU跑3.5倍->800*3.5=2.8G HZ是CPU跑的速度
主機板若是支援雙通道 板上插上兩條DDR400記憶體 DDR400*2就能充分發揮效能
狂飆~~
CPU在設計上有可能會加上快取(Cache)
像P4有L1, L2甚至L3 Cache, 如果是512k L2 Cache還不能滿足你的需求還有1024k L2 Cache呢
AMD 也有相當的設計
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：mhyue |
Posted：2004-02-25 14:55:00 |
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關於 P4 2.8 EG hz
P4 2.8 CG hz
P4 2.8 AG hz...等等
EG,CG,AG是Intel開發CPU不同版本的代號,代表這些CPU雖然跑的頻率都是2.8 G hz(不超頻),但是在支援前端匯流排. L2 Cache的不同設計,這些多半是在世代交替時所做的處理
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：訪客 |
Posted：2004-02-27 11:38:00 |
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關於mhyue所講，我認為你錯了，CPU時脈算法並不是這樣，CPU=倍頻*外頻
而FSB雖可代表外頻，但你這樣算時脈是錯的，我試問你，XP1700+真正時脈為1.46G，FSB頂多266，那他是5.5*266嗎？不是吧!因為它是11*133，FSB266是因為此CPU設計，簡單而言他一次丟兩個訊號出去，所以你的FSB才為266，因為2*133，而現在FSB800的P4，他一次訊號是丟四個訊號出去，也就是所謂的4倍頻率，所以他外頻200FSB才為800，因此CPU時脈是14*200=2.8G
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：訪客 |
Posted：2004-02-28 23:35:00 |
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Intel® Pentium® 4 Processors
What is the meaning of the 'A', 'B', 'C', and 'E' letter designators?
Symptom(s):
What do the letters after the processor speed mean?
Solution:
Intel® Pentium® 4 processors that share the same core speed in GHz may have different product features. In cases where different processors exist at a single speed, letter designators are added to the processor core speed. Distinguishing features include the size of the L2 Advanced Transfer Cache, the speed of the front side bus, and the type of manufacturing process used.
'A' designator:
This letter designator identifies Pentium 4 processors with 512KB full speed L2 Advanced Transfer Cache. For example, the Pentium 4 processor at 2 GHz has 256KB L2 cache while the Pentium 4 processor at 2A GHz has 512KB L2 cache.
'B' designator:
This letter designator identifies Pentium 4 processors that support a 533 MHz front side bus speed. For example, the Pentium 4 processor at 2.40 GHz supports a 400 MHz bus speed and the Pentium 4 processor at 2.40B GHz supports a 533 MHz bus speed.
'C' designator:
This letter designator identifies Pentium® 4 processors that support Hyper-Threading Technology † and an 800 MHz front side bus. For example, the Pentium® 4 processor at 2.40C GHz supports an 800 MHz front side bus and Hyper-Threading Technology1.
Note: The letter 'D' is not used at this time.
'E' designator:
This letter designator identifies Pentium® 4 processors that are manufactured using the 90 nanometer process with 1MB L2 Advanced Transfer Cache.
Exception:
One exception is the Pentium® 4 processor at 2.80A GHz. In this case the 'A' designator indicates a Pentium® 4 processor at 2.80 GHz with 1 MB L2 cache, 533Mhz front side bus built using 90 nanometer process. This processor does not support Hyper-Threading Technology1.
No designator:
If no letter designator is present, then there is no overlap in process technology or front side bus speed at that processor core speed. For example, all Pentium 4 processors at 3.06 GHz are built using the 0.13 micron process technology and support a 533 MHz bus speed; therefore, no letter designator is indicated.
†† Hyper-Threading Technology requires a computer system with an Intel® Pentium® 4 processor supporting HT Technology and a Hyper-Threading Technology enabled chipset, BIOS and operating system. Performance will vary depending on the specific hardware and software you use. See http://www.intel.com/info/hyperthreading/ for more information including details on which processors support HT Technology.
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：訪客 |
Posted：2004-03-28 21:29:00 |
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Combo機是結合CD燒錄機與DVD光碟機的複合機型。---Trank Li
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