The influence of video memory on computing power
Publish: 2021-04-25 15:46:16
1. Video memory is used to cache data. High resolution, high quality maps and special effects will increase the amount of video memory<
hd7850 was launched in 2GB version, and later it was released in 1GB version. You can see the usage of video memory with gpu-z - high end video cards such as R9 290x mainly focus on 4K resolution and have 4GB video memory.
hd7850 was launched in 2GB version, and later it was released in 1GB version. You can see the usage of video memory with gpu-z - high end video cards such as R9 290x mainly focus on 4K resolution and have 4GB video memory.
2. Memory is used to store the running programs. With large capacity, the computer can run more programs at the same time. The intuitive performance is that the computer is faster, opening more programs may not be stuck.
video memory is used to store the temporary data of the video card. The higher the complexity of the game, the higher the special effects, and the larger the video memory needed, but the memory capacity needs to be the same as that of the video card
video memory is used to store the temporary data of the video card. The higher the complexity of the game, the higher the special effects, and the larger the video memory needed, but the memory capacity needs to be the same as that of the video card
3. It needs to be determined according to the specific situation:
when the display memory size is less than 1GB, it has a great impact on the performance of the graphics card. For example, the performance of the graphics card with 1GB of display memory and the graphics card with 512MB of display memory is very different. The main reason is that:
when the display size is more than 19 inches, the display memory must be more than 1GB to achieve the complete display effect, and the larger the screen is, The higher the demand for video memory
at present, the minimum video memory requirement of some games is 512MB. If the video memory is 512MB, the game effect is not very good
if the video memory is more than 1GB, the performance of the video card will not be greatly affected. Of course, for large games or large display screens, the impact is very great
for today's mainstream graphics cards, the video memory is more than 1GB, and for high-end graphics cards, the video memory is 4GB or even 8GB, so you don't have to consider the factor of video memory too much.
when the display memory size is less than 1GB, it has a great impact on the performance of the graphics card. For example, the performance of the graphics card with 1GB of display memory and the graphics card with 512MB of display memory is very different. The main reason is that:
when the display size is more than 19 inches, the display memory must be more than 1GB to achieve the complete display effect, and the larger the screen is, The higher the demand for video memory
at present, the minimum video memory requirement of some games is 512MB. If the video memory is 512MB, the game effect is not very good
if the video memory is more than 1GB, the performance of the video card will not be greatly affected. Of course, for large games or large display screens, the impact is very great
for today's mainstream graphics cards, the video memory is more than 1GB, and for high-end graphics cards, the video memory is 4GB or even 8GB, so you don't have to consider the factor of video memory too much.
4. There are two main aspects of the performance of video memory capacity
first, the size of the display has certain requirements on the capacity of the display memory. If the display size is 19 inches or more, it is best to choose a 1g video memory capacity graphics card. If the display size is less than 19 inches, 512MB is enough. If the display size exceeds 27 inches, then 1g video memory capacity is not enough, 1.5g or even 2G video memory capacity is needed
the second is the requirement of video memory capacity. Nowadays, many games require that the video memory capacity of the video card should be at least 512MB. That is to say, the video memory capacity of 512MB is only a minimum requirement for games, and this minimum requirement is often not satisfactory. For example, GTA4 requires a minimum of 512MB of video memory. But if you really take a 512MB video memory card to run the game, you will find that many special effects of the game can't be opened, because the video memory capacity is too small. If you open other special effects, the video memory capacity is not enough. So the picture of the game will be terrible
therefore, it is necessary to buy a graphics card with 1G memory capacity now, so you don't need to consider 512MB. Even if the performance of a graphics card is low, you should choose 1g. But is it necessary for a graphics card with 2G video memory? In my opinion, at least for the moment, there is not much need, unless your graphics card is a high-end graphics card (the price is more than 2000 yuan) or your display size is relatively large
as for the version of DirectX, naturally, the higher the version is, the more colorful and lifelike the game screen is
but this is limited by two conditions. The first condition is which version the game itself supports. If this game only supports dx10.0, even if dx11.0 is installed in the computer, it can't present a more realistic picture. Second, the number of DX versions supported by the graphics hardware. For example, the 9800gt graphics card only supports dx10.0, but does not support dx11.0. Therefore, although its performance is higher than that of the GT 440 graphics card, the special effects of dx11.0 can not be reflected. As a result, the game images presented by GT 440 are more beautiful than those of 9800gt.
first, the size of the display has certain requirements on the capacity of the display memory. If the display size is 19 inches or more, it is best to choose a 1g video memory capacity graphics card. If the display size is less than 19 inches, 512MB is enough. If the display size exceeds 27 inches, then 1g video memory capacity is not enough, 1.5g or even 2G video memory capacity is needed
the second is the requirement of video memory capacity. Nowadays, many games require that the video memory capacity of the video card should be at least 512MB. That is to say, the video memory capacity of 512MB is only a minimum requirement for games, and this minimum requirement is often not satisfactory. For example, GTA4 requires a minimum of 512MB of video memory. But if you really take a 512MB video memory card to run the game, you will find that many special effects of the game can't be opened, because the video memory capacity is too small. If you open other special effects, the video memory capacity is not enough. So the picture of the game will be terrible
therefore, it is necessary to buy a graphics card with 1G memory capacity now, so you don't need to consider 512MB. Even if the performance of a graphics card is low, you should choose 1g. But is it necessary for a graphics card with 2G video memory? In my opinion, at least for the moment, there is not much need, unless your graphics card is a high-end graphics card (the price is more than 2000 yuan) or your display size is relatively large
as for the version of DirectX, naturally, the higher the version is, the more colorful and lifelike the game screen is
but this is limited by two conditions. The first condition is which version the game itself supports. If this game only supports dx10.0, even if dx11.0 is installed in the computer, it can't present a more realistic picture. Second, the number of DX versions supported by the graphics hardware. For example, the 9800gt graphics card only supports dx10.0, but does not support dx11.0. Therefore, although its performance is higher than that of the GT 440 graphics card, the special effects of dx11.0 can not be reflected. As a result, the game images presented by GT 440 are more beautiful than those of 9800gt.
5. I've seen it in N13 before, which is to develop blockchain technology and provide a series of blockchain related services.
6. The essence of mining machine is an electronic proct, the core of which lies in the chip, power plate and power supply. The chip adds in the hash formula to get bitcoin. The proct is directly plugged into the Internet cable, connected to the power supply, and set the mine pool website address. Then the machine starts to run, and bitcoin can be obtained
according to many trading software of bitcoin, you can take the bitcoin you dig out and sell it directly on the trading software, and then you can change it into ready-made RMB,
according to many trading software of bitcoin, you can take the bitcoin you dig out and sell it directly on the trading software, and then you can change it into ready-made RMB,
7. Huawei's P40 Pro mobile phone is good. The parameters of the mobile phone are as follows:
1. Screen: the screen size is 6.58 inches, the screen color is 16.7 million colors, and the resolution is 2640 × 1200 pixels, four surface overflow screen, slide comfortable, no border, more advanced
2. Camera: front camera pixel 32 megapixel depth of field camera (F / 2.2 aperture, auto focus), rear camera pixel super sensing Leica four camera: 50 megapixel super sensing camera (wide angle, f / 1.9 aperture, OIS optical anti shake) + 40 megapixel movie camera (ultra wide angle, F / 1.8 aperture) + 12 megapixel super sensitive long focus camera (F / 3.4 aperture, f / 1.8 aperture, OIS optical anti shake) + 20 megapixel super sensitive long focus camera, OIS optical anti shake) + 3D deep sense camera, whether it is day or night, smooth or backlight, can be comparable to professional camera
3. Performance: emui 10.1 (based on Android 10) and Kirin 990 5g are adopted for smooth operation
4. Battery: battery capacity 4200mah (typical value), standard charger supports 10V / 4A or 9V / 2A or 5V / 2A output, mobile phone supports maximum 10V / 4A super fast charging, compatible with 4.5v/5a or 5V / 4.5a super fast charging, compatible with 9V / 2A fast charging. Support 27W Huawei wireless super fast charging, support wireless reverse charging, long life, more comfortable to use
you can log in to the official website of Huawei mall to view more information about your mobile phone, and choose according to your hobbies and needs.
1. Screen: the screen size is 6.58 inches, the screen color is 16.7 million colors, and the resolution is 2640 × 1200 pixels, four surface overflow screen, slide comfortable, no border, more advanced
2. Camera: front camera pixel 32 megapixel depth of field camera (F / 2.2 aperture, auto focus), rear camera pixel super sensing Leica four camera: 50 megapixel super sensing camera (wide angle, f / 1.9 aperture, OIS optical anti shake) + 40 megapixel movie camera (ultra wide angle, F / 1.8 aperture) + 12 megapixel super sensitive long focus camera (F / 3.4 aperture, f / 1.8 aperture, OIS optical anti shake) + 20 megapixel super sensitive long focus camera, OIS optical anti shake) + 3D deep sense camera, whether it is day or night, smooth or backlight, can be comparable to professional camera
3. Performance: emui 10.1 (based on Android 10) and Kirin 990 5g are adopted for smooth operation
4. Battery: battery capacity 4200mah (typical value), standard charger supports 10V / 4A or 9V / 2A or 5V / 2A output, mobile phone supports maximum 10V / 4A super fast charging, compatible with 4.5v/5a or 5V / 4.5a super fast charging, compatible with 9V / 2A fast charging. Support 27W Huawei wireless super fast charging, support wireless reverse charging, long life, more comfortable to use
you can log in to the official website of Huawei mall to view more information about your mobile phone, and choose according to your hobbies and needs.
8. 1. Global variables in different files need to be declared as extern when they are used 2. When the timer T1 overflows, the T1 interrupt flag TF0 is automatically set to 1 by the hardware to request interrupt processing from the CPU 3. When multiple interrupt sources request interrupts at the same time in the system, the CPU will respond from high to low according to the priority of the interrupt source 4. The counting register consists of th and TL registers to form a 16 bit timer / counter 5. When programming the interface program between MCU and keyboard, it is not necessary to remove the jitter of keyboard 6. A machine cycle of MCU refers to the time required to complete a specified operation. Generally, a machine cycle is equal to a clock cycle The smaller the oscillation period (or the higher the oscillation frequency), the shorter the execution time of C language statements There are two timers / counters in AT89S51 When defining a function, add the keyword static before the function type, then the function can only be used as an internal function 10. There are three interrupt registers: TCON and scon, ie ╳
9. I will
SFR P0 = 0x80 for your first two courses< br />sfr P1 = 0x90;< br />sfr P2 = 0xA0;< br />sfr P3 = 0xB0;
/ * the following line is the main program of the source file * /
? Include "reg51. H"
void main()
{
) unsigned char mybyte; // The value range of mybyte is 0 ~ 256 < br /> P0=0xFF; // Let P0 be input < br /> while(1)
{< br /> mybyte=P0;< br /> if(mybyte< 100)
P1=mybyte; // If it is required to change P1 here to P1, the program can still work normally
else // Run, then define SFR P1 = 0x90; It should be changed to SFR P1 = 0x90; P2=mybyte;< br /> }
}
t0 mode 1 Th0 = (65535-200) / 256; TL0=(65535-200)%256;
t0 mode 0 Th0 = (8192-200) / 32; TL0=(8192-200)%32;// The low TLX is 5 bits and the high thx is 8 bits
SFR P0 = 0x80 for your first two courses< br />sfr P1 = 0x90;< br />sfr P2 = 0xA0;< br />sfr P3 = 0xB0;
/ * the following line is the main program of the source file * /
? Include "reg51. H"
void main()
{
) unsigned char mybyte; // The value range of mybyte is 0 ~ 256 < br /> P0=0xFF; // Let P0 be input < br /> while(1)
{< br /> mybyte=P0;< br /> if(mybyte< 100)
P1=mybyte; // If it is required to change P1 here to P1, the program can still work normally
else // Run, then define SFR P1 = 0x90; It should be changed to SFR P1 = 0x90; P2=mybyte;< br /> }
}
t0 mode 1 Th0 = (65535-200) / 256; TL0=(65535-200)%256;
t0 mode 0 Th0 = (8192-200) / 32; TL0=(8192-200)%32;// The low TLX is 5 bits and the high thx is 8 bits
10. You have to ask questions one by one and get all the answers. You can buy books or download resources directly.
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