Why does every external mass storage device have less capacity than advertised? For a 4 GB USB drive, the actual accessible space is around 3.7 GB. For a 1 TB portable HDD, it is only around 930 GB. Where does the remaining 70 GB go?
Here is the simple calculation from 1 TB to 931 GB.The manufacturer has built a hard drive which physically contains: 1,000,000,000,000 bytes.But since the computer sees 1KB as 1024 not 1000 bytes then the actual storage space will be smaller.According to the hardware specification: 1 TB = 1000,000,000,000 Bytesthus, 1000,000,000,000 bytes = 1000,000,000,000/1024 KB. = 976562500 KB.Now, similarly, 976562500 KB = 976562500/1024 MB = 953674.32 MB.Similarly, 953674 MB = 953674.32/1024 GB = 931.32 GB.1 GB = 1024 MB1 MB = 1024 KB1 KB = 1024 B Hence the 931 GB.
My laptop has 4gb ram but only 3.6 was usable before and now its only 3.45 usable?
The amount of usable RAM has nothing to do with performance unless it's all full, in which case you'd know because the computer would be unusably slow. What likely happened is that you have an integrated graphics chip (one that uses part of your RAM instead of carrying its own dedicted memory) and it needed more memory than it currently had allocated, so your computer gave it some more.
What Ghz of processesor should be good for gaming?
In simple way, 8th Gen is 40% More powerful than 7th gen. In detail check below :Cores:i7 7th Gen:7500U (2 Cores, 2.7 GHz)7700HQ (4 Cores, 2.8 GHz)7820 HK (4 Cores, 2.9 GHz)i7 8th Gen:8550U (4 cores, 1.8 GHz)8650U (4 Cores, 1.9 GHz)8750H (6 Cores, 2.2 GHz)8850H (6 Cores, 2.6 GHz)i5 7th Gen:7300HQ (4 Cores, 2.5 GHz) No Hyper Threadingi5 8th Gen:8250U (4 Cores, 1.6 GHz) + Hyper Threading Support8300H (4 Cores, 2.3 GHz) + Hyper Threading SupportI have created a detailed Comparison of all the models, Please Visit the link below for the sameIntel® Product Specification Comparison...