Graphics software overclocking computing power decline

1. Graphics card overclocking can be carried out under windows. Just use some software. Overclocking performance growth is small, to see the graphics card constitution. Good physique, performance can be improved. The physical condition is not good, but the performance will decline after overclocking. It seems that the error rate of the graphics card will increase under high frequency. If the graphics card wants to correct these errors, it will cost unnecessary performance.

2. As for the performance degradation after overclocking, the overall comment is like this<

the voltage is not enough or overheat leads to performance degradation:
if the voltage setting is not high enough, the frequency may go up on the surface, but in fact it can't work at full speed, that is, the performance will go down instead
however, it is not recommended to increase the voltage of the graphics card, because the graphics card basically has no over frequency protection design, once the voltage is too high, it may be burned directly<

unreasonable overclocking parameters affect the performance
unreasonable overclocking parameters may also cause performance degradation,
for example, for an n card, the default frequency is 576 / 1242 / 2000MHz (core / shader / memory ry),
if the shader frequency exceeds 1800MHz, Then the core frequency should be about 812mhz, which is the best ratio.
when the frequency is 812 / 1800 / 2000MHz, the performance of the graphics card will be the highest
if the core frequency is increased to 850mhz, it seems that the graphics card has exceeded a higher frequency.
however, as the frequency of the shader is only about 1650mhz, the performance of the graphics card may be reced compared with the previous overclocking setting
therefore, users should carefully check whether the frequency setting is correct when they are overclocking, whether the matching relationship of the frequency of the graphics card is reasonable, and whether the external frequency of the processor is high enough

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another problem is that if the CPU is overclocking, the pcle is locked and the game performance is degraded e to the lack of power supply from the North Bridge of the main board
the official solution is to brush the BIOS. Unofficial solution, motherboard overclocking, improve the North Bridge power supply control

if the physical fitness of the processor / graphics card itself is not good, the performance of the processor and graphics card will decline after the processor and graphics card are overclocking. The reason for this situation is more complex, may be e to the high heat of overclocking processor internal signal clutter, so the system is not very good hardware do not overclock.

3. First of all, the graphics card is not used to run points
if you pursue performance, you can use a high-performance graphics card
the memory width of your card is only 128 bits
overclocking will cause system instability, so it is normal for you to have a black screen

4. The performance test of windows optimization Masters is not accurate at all

3dmark is recommended for testing

5. The al X platform (ASUS X58 + X5650) just changed a while ago, which is known as the top CPU of the server. The main frequency is only 2.67g, and the performance without overclocking is equivalent to i5. Recently, there were various overclocking tests. One of the strangest phenomena is that when the overclocking exceeds 200x20 and reaches 4G or above, the score of playing chess is normal, above 20500, But the other tests are very strange:
1. The physical score of 3D mark 11 x mode is significantly lower than that of 3.8g:
the second physical score of 4G x mode is 7300, 3.8g is 9500

2. The CPU performance test of master Paolu is also significantly lower than that of 3.8g:
4G CPU is 7200, 3.8g is 9100

3, On the contrary, 3.8g runs smoothly...

it's really strange. Is the CPU unstable? So I used Linx 0.6.4 roast chicken to pass, indicating that there is no problem with the constitution. This problem has been entangled for several days. Last night, I suddenly remembered whether it is the memory timing problem. I used Kingston narrow DDR3, 1600hz, 4gx2. I know that when the CPU is overclocking, the default value of memory timing is very conservative in order to stabilize it, so I began to debug the memory timing, First, observe the memory timing parameters of two times of overclocking:
overclocking 3.8g memory runs at 1520hz by default, and the timing is 9-9-9-24-173
overclocking 4G memory runs at 1600hz by default, and the timing is 11-11-11-32-216
in fact, there is not much difference between 1520hz and 1600hz, and the timing difference should not be so big, So it runs in accordance with the overclocking 4G memory at 1600hz, and the time sequence is 9-9-9-24-160... After various tests, it finally achieves its wish, and the scores are all normal:

1. The physical score of 3D mark 11 x mode is more than 9600. 2. Master Lu's performance test, CPU score is more than 9500. 3. The watchdog runs without jamming, and the number of frames is significantly improved

summary: in the past, the score of network search CPU overclocking was low. I saw that many basin friends who had the same experience with me raised the same question, but most of the answers were the conclusion that CPU overclocking was unstable. If there was no tossing spirit, people could only obediently rece the frequency, so my test can give these basin friends a hint!

6. Mine is 670mx, the same problem. If you observe the change of core frequency in AB, you will see that the core frequency has been jumping rapidly between high and low frequencies. This can explain why the overall performance is reced e to overclocking. At present, it is not clear whether this problem is caused by graphics card constitution or driver problem. We can do experiments to analyze it when we have time.

7. Generally, the performance degradation of the graphics card is as follows:
1. Turn on the energy-saving mode. Sometimes switching to energy-saving mode leads to switching to the core graphics card. The result is that the detection software can detect the difference for many times
2. The temperature of the graphics card is too high. The main reason is that there is too much st and not enough heat dissipation, which leads to the performance degradation of the graphics card
3. It is recommended to re install the latest driver. If not, it should be repaired

for cleaning up the st of the graphics card, the following tutorial is introced in detail:
1. First of all, the main board of the graphics card needs to be separated from the heat dissipation mole. Here, the fixing screws of the graphics card and the heat dissipation mole need to be disassembled, as shown in the figure below:

2. After the main board of the graphics card and the heat dissipation mole are disassembled and separated, We can see that a lot of st will accumulate inside the graphics card with turbine air ct in many households. At this time, small cotton swabs are used to clean some internal corners, as shown in the figure below:

3. In addition, a lot of st will accumulate on the PCB of the graphics card, especially in the air outlet and other places, We can simply clean it with cotton swab first. It's better to dip alcohol on the cotton swab for cleaning

4. When cleaning up the st of the graphics card, the most important part is to clean up the heat dissipation of the core chip, as shown in the figure below:

5. The turbine fan of the graphics card is also wiped clean by the way, and the silicone block solidified on the copper bottom of the radiator is also wiped down, which can use some force.

8. Overclocking too much.. automatic protection or something.. restart to restore the original frequency should be

9. In a word, n card temperature is high, automatic frequency down... Your card is OK, my card 450 exceeds 700, Master Lu test has not passed 35

10. It's obvious that the CPU can't pull up