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Graphics overclocking
Recently, I have seen many friends to ask overclocking problems. Anyway, I haven't worried tonight, I will say overclocking. The content is relatively primary, don't see. It is still looking forward to it. In general, when the chip is exit, the manufacturer does not calibrate the speed of the chip in the ultimate frequency of the chip. In general, there will be certain "relaxation". Even sometimes, because the market needs, chip vendors will sell some high-frequency chips to deliver frequencies, which is like 5200 and 5200ultra chips, which is likely to produce the same quality on the same quality. The process of overclocking is actually to find the "limit frequency" of the chip stabilization. So, proper overclocking does not affect the system stability and the life of the graphics card. It is dangerous. The quality of overclocking and chip has a big relationship. In fact, with the current technology, it is impossible to achieve precise control of the chip quality during chip manufacturing. Therefore, even the same chip, even the chip produced on the same pipeline, its own "physical fitness" may also be different. Therefore, the overclocking capabilities of each graphics (or CPU) may be different. Overclocking ability In addition to the quality of the chip itself, some external factors have great impact on it. As follows: 1, the heat sink. Overclocking will increase the heat of the chip's own heat, resulting in unstable work of the chip. It may even cause "electron transfer" to cause the wires inside the chip to blow, so that the chip is completely damaged. 2, wiring: a General, each piece of distance to the core is required to be accurate. However, due to the difference in wiring design or work, it will result in unable to completely accurately. At this time, if the memory works in high frequency, it will cause asynchronous asynchronous operation, resulting in a "flower screen". B If the graphics card uses a large number of parallellines, the graphics card will be severe (electromagnetic interference), thereby affecting the working stability of the graphics card. It will be much better for the use of the snake line wiring. 3, the material. The most important of these is the capacitor. The stability of the graphics power supply output circuit voltage is not open, and the good capacitance can provide a more stable output pressure waveform, or reduce the fever of the graphics power supply circuit, and can withstand a larger current. In addition, the PCB board and other components will also have a certain impact on overclocking. 4, BIOS settings. The BIOS of the graphics card defines the latency of the memory (like the memory delay, the lower the delay, the faster the speed at the same frequency), if the manufacturer sets the memory delay, the overclocking ability of the memory can be improved. In general, my usual overclocking method: 1, first super-core, not survive. The core is added with a certain frequency based on the specific chip, and is generally 10% -15%. Then open 4AA and 4AF to run 3dmark03 for testing. If the screen appears "checkered" or crash, immediately exit or restart, then reduce the frequency, and test again. If there is no problem, add 10-20MHz to test. Until the start of unstable, find out the "ultimate frequency" of the core. 2, more than the memory, then the core is not super. In general, the frequency of the memory is calculated based on the speed of the memory. The theoretical operating frequency, DDR memory of the memory is calculated by 1000, and the DDR memory is calculated, and then 2. For example, 2.8ns memory is: 1000 / 2.8 = 357, since DDR memory, 357 * 2 = 714, the operating frequency of the memory is 714 MHz.
