论手机cpu（On mobile phone CPU）.docVIP

论手机cpu（On mobile phone CPU） At present, the market for high-end Android mobile phones using several major categories of CPU and nothing more than Samsungs S5PC110 (hereinafter referred to as C110), Tis OMAP 3430 (36X0), Qualcomms Snapdragon 8X50 (MSM 7230/MSM 8225). Ti OMAP 3430 (L1 64KB, L2 256KB, DDR 256M) is the industrys first use of ARM7 instruction set (ARM7 instruction set) CPU, Ti Cortex A8 (call it Ti completely using the framework provided by ARM company, is not modified, so the launch of the product is very fast, because it is the first) the new framework of CPU, so the performance than the original ARM 11 framework U to improve a lot, generally considered the frequency performance of ARM 7 is ARM 11 200% (by the way of NOKIAs flagship machine is still in use about 600M ARM 11 framework rotten U said weakness, also in the early HTC G1, G2, G3 also use the ARM11 framework CPU). It is because of the OMAP 3430 launch time early, so far, has to keep up with the mainstream, ask to use MS s shoes in the upgrade to Android 2.2 after playing Flash problems will know, the highest 3430CPU supports 256M, Moto is not stingy, not had to give you a 512M RAM. The difference between OMAP 36X0 (support 512M DDR2) and OMAP 3430 is that the former uses the 45NM process, and the latter uses the 65NM process, and the two frameworks are CortexA8, and there is no difference. The advantages of the advanced process are higher frequency and less power consumption and heating. But when it comes to frequency said Ti and Moto is not kind, Milestone2 and Droid 2 by OMAP 3630, the design frequency is 800M, simply give overclocked to 1G in the sale, Droid 2 international version of the OMAP 3640 design frequency 1G, but also to sell overclocked to 1.2G. Although CPU products such as originally exist overclocking room, but not according to the frequency of the design, always uncomfortable. OMAP 3430 and OMAP behind 36X0 are integrated SGX 530 graphics core, but because the Cortex A8 in t