Find the price of 512M graphics card and 1G memory

Graphics; 500-800.

1G RAM; About 150 yuan.

300 yuan G210 6200 Colorful HD4670 etc.

600 yuan GTS250 HD5670 etc.

1G RAM is around 150.

There is an old graphics card of 150 RAM and 120 RAM

Let's go up and have a look.

Summary. A 512G memory card actually has about 490G. The reason is that the product nominal calculation is based on 1MB equals 1000KB, while the actual detection is based on the standard of 1MB equals 1024KB, so it will be a little different.

For example, if the nominal value is 512MB, the actual capacity is 512 1000 1000=512000000B, if it is calculated according to 1MB=1024KB. Then 512000000 1024 1024 is about equal to about 490. ”

512G memory card, usable capacity 510G

Can you give an answer?

A 512G memory card actually has about 490G. The reason is that the product nominal calculation is based on 1MB equals 1000KB, while the actual detection is based on the standard of 1MB equals 1024KB, so it will be a little different. For example, if the nominal value is 512MB, the actual capacity is 512 1000 1000=512000000B, if it is calculated according to 1MB=1024KB.

Then 512000000 1024 1024 is about equal to about 490. ”

Taking SSDs as an example, the theoretical value of the actual usable capacity of SSD 512G is about 100. Because the SSD still has a part of the spare space, it is reserved for the backup to replace the bad sectors.

That is, the actual capacity of 512G is the nominal capacity of the factory, and the actual formatted capacity is, which is mainly due to the fact that the manufacturer uses decimal calculation, and the formatted capacity uses binary calculation.

Calculation method introduction, take 512G capacity as an example: since the manufacturer uses the decimal system, then the nominal capacity of 512G has 512*1000MB, that is, 512*1000*1000KB, 512*1000*1000*1000B, that is, 512*1000*1000*1000 bytes. These bytes are given to users by the manufacturer, but these bytes will become 512*1000*1000*1000 1024KB, that is, 512*1000*1000*1000 1024 1024MB, 512*1000*1000*1000 1024 1024GB.

And 512*1000*1000*1000 1024 1024 1024GB. See, 512*1000*1000*1000 bytes will become after being represented in formatted binary. In other words, the actual capacity of 512G is,There's nothing greasy in it.,It's just the difference in computing standards between manufacturers and computer formats.。