Influence of frequency on calculation force
the ability of double precision floating-point computing is commonly used to measure the scientific computing ability of CPU, that is, the ability to process 64 bit floating-point data
the processor supporting avx2 can perform 16 floating-point operations in one core and one clock cycle, Also known as 16flops
CPU power = number of cores x frequency of cores x 16flops
processors supporting avx512 can perform 32 floating-point operations in one core and one clock cycle, also known as 32flops
CPU power = number of cores x frequency of cores x 32flops
among them, floating-point computing is one of them
floating-point computing power has a lot to do with the first level cache
for example,
amd
CPU's floating-point computing power is much higher than inter
dominant frequency is a very important point, but not all
if dominant frequency decides everything, AMD will declare bankruptcy
but Inter is afraid of AMD
amd 2600 + uses super -- pi to measure The result of the test is comparable to the speed of p43.0, but the main frequency of 2600 + is only 1.8g
but the CPU of the same architecture and cache is determined by the main frequency
it can tell you an undeniable fact that the CPU of
p3-866
is faster than that of P4 Celeron 1.8g
also playing online games, mobile phones with higher computing power are more fluent, and those with less computing power will get stuck
if you want a mobile phone to have higher computing power and play games without jamming, you need not only more core and higher frequency CPU, but also more memory and more stable and fast network
therefore, network, storage and computing power are the three main factors that determine the computing power of mobile phones. You can go to the tenth power computing platform to learn more about computing power and get free computing power.
some CPUs have two levels of flash memory. The speed of data exchange between flash memory and CPU is very close to that of CPU itself
in general, the data exchange between memory and CPU is one or two orders of magnitude lower than the computing speed of CPU itself (depending on which bus the computer uses), which is the biggest bottleneck affecting the overall computing speed of a computer
so your question is not completely correct. The relationship between the overall computing power and memory size of the computer and the relationship between the overall computing power of the computer and the data exchange speed of the bus are secondary
only when the bus speed is constant and the size of memory is not less than the maximum number of bytes that can be exchanged by the bus per second, can the memory not become a factor to rece the overall computing speed of the computer
I don't know if you are satisfied with this answer.
At the end of 2017, digital currency experienced explosive growth and Waterloo like decline in 2018, and now it tends to be stable. During this period, a large number of investors poured into the currency circle, and all kinds of digital currencies need to be bought and sold through exchanges or digital currency wallets. However, in 2018, there were frequent incidents of exchange digital currency theft, so more and more traders chose to store digital assets in digital currency wallets, Sort out the five most well-known digital currency wallets and let's get to know them
Bitpai (score: 8.5)
bitpai is a comprehensive blockchain asset service proct based on HD wallet. Its main functions include: sending and receiving, buying and selling, accelerating transaction, etc. The user controls the private key, and the coin after the transaction is completed is directly kept by the user. At present, the currencies it supports mainly include BTC, BTC, ETH, some erc2.0 tokens, qtum, HSR, dash, safe, LTC, LCH, Zec, etc and Doge
advantages: the balance of the current digital currency can be displayed at the top of the front page of the wallet, and the upper left corner can be switched to other digital currencies, and the currency balance can also be switched from quantity to legal currency value. There are many functions in the middle, such as issuing currency, receiving currency, one click trading, etc. the broadcast of each transfer transaction is displayed below, and the completed transaction can also be queried in the transaction record. After leaving the bitpai app interface for a period of time, you need to unlock it when you re-enter, which improves the security of the wallet
deficiency: Only Mainstream currencies are supported, other small currencies are not supported, and the number of currencies is 10 +. The page setting is not user-friendly, and various parameters make it difficult for users to use. In addition, the security is worrying: Recently, there is a problem with bitpai IOS version, and the application can't be opened, and the official said: if you unload it carelessly, the assets in your wallet may not be recovered! It's still in Apple communication
download address: bitpie.com
2. Geek wallet (rating: 8.2)
geek wallet is a simple and convenient light wallet, which supports the storage and management of mainstream digital currency assets such as bitcoin (BTC), lightcoin (LTC), Ethereum (ETH), EOS, usdt, etc
advantages: high security factor, using local private key security mechanism, as well as mobile phone and computer al backup strategy, supporting the current mainstream currency, the platform has a jump market, which can carry out token trading of physical assets on the chain
deficiency: usdt transaction must use 0.0001 BTC as transaction handling fee, does not support some small currencies, page optimization is good, but the function is less
download address: www.geekwallet.org 、 www.geekwallet.cn
3. Imtoken (score: 8)
imtoken is a mobile light wallet app, which supports Eth and Ethereum erc2.0 standard tokens (such as EOS, DGD, SNT, qtum), and is a necessary wallet for Ethereum series of digital currencies
advantages: as a light wallet of Ethereum series, mtoken supports all the tokens of Ethereum erc2.0 standard, can control the miner's fee of each coin, can set the amount of collection, and has convenient transaction record query, refreshing interface, simple operation, so it is suitable for ICO investors who need to receive a variety of erc2.0 standard tokens and do not trade frequently
The "discovery" mole of wallet is not intuitive enough. 2. The tokens that can only be stored on the Ethereum platform, such as BTC and Neo, can't be stored. At the same time, the bifurcations of bitcoin can't be storeddownload address: token. Im
4. Kcash (score: 7.8)
kcash is also a light wallet, which currently supports BTC, ETH, LTC, etc, act and digital currency based on Ethereum and achain smart contract platform. Kcash has cross chain and cross contract technology, and the supported currencies are still increasing
advantages: as a Multi Chain Wallet, kcash supports multiple types of digital currencies and is very friendly to users who invest in multiple series of digital currencies. In addition, kcash also has the function of sending red packets, and in the future, it will launch currency transaction, bank card connection and other functions
deficiency: too many features lead to poor usability. In addition, there are some problems with the compatibility of Android versions. Some Android models will flash back when they open the app
download address: kcash.com
5. Cobo (rating: 7.8)
Cobo is a professional digital asset management wallet, which can help you store assets safely, and the unique POS gain can help you increase the value of assets. It supports more than 20 kinds of digital assets including eth, EOS, TRX, and more than 500 kinds of tokens
advantages: Cobo security is in the lead in the same level, using multiple security verification, hot and cold separation storage, HSM multi signature, Cobo provides you with stable income through intelligent voting, dpos vote pool, POS mining digital asset gain matrix
deficiency: the page optimization is poor, the function is complex, it's a little difficult to get started, and there is also a flash back problem of Android version
download address: cobo.com
Linx software can be used to test the floating-point computing ability
after Linx software is opened, select the calculation scale, memory usage and running times
recommended settings:
al core computing scale: 4000 runs: 1 ~ 2
four core computing scale: 8000 runs: 3
eight core computing scale: 10000 runs: 3
floating point unit description: a gflops (gigaflops) is equal to 1 billion (= 10 ^ 9) floating point operations per second
With the increasing performance of display chip, its data processing ability becomes stronger, which makes the requirements of data transmission capacity and transmission rate become higher, and the requirements of graphics card for graphics memory are also higher. At present, most of the graphics cards use gddr2-5 generation of graphics memory
nowadays, the performance of graphics card is getting stronger and stronger, which can't ignore the fact that the development speed of display chip is fast, but the frequency, bit width and bandwidth of graphics memory also restrict the overall performance of graphics card. The advanced display memory can make the display chip work with all its strength and make the output picture smoother
the higher the frequency of video memory, the faster the data can be recorded and read on the video memory. The frequency of video memory provided by different video memories also varies greatly. The early video memories include 133MHz, 166MHz, 400MHz, 500MHz, 600MHz, 650MHz, etc
at present, there are 800MHz, 1200MHz, 1600MHZ, 2200MHz and even higher middle end procts. The method to calculate the equivalent frequency is to take the frequency of video memory * generation. For example, if the frequency of gddr5 video memory is 2000MHz, the equivalent frequency of 8000MHz can be obtained from 2000 * 4
extended data:
working principle
the working principle of the graphics card is: before the graphics card starts to work (graphics rendering modeling), it usually transfers the required material and texture data to the video memory
Whenstarts to work (modeling and rendering), these data are transmitted through AGP bus, and the display chip will extract the data stored in the display memory through AGP bus. In addition to modeling and rendering data, there are a lot of vertex data and work instruction flow to be exchanged, and these data are converted into analog signals and output to the display terminal through RAMDAC, In the end, it's the image we see
With the improvement of the performance of the display chip, the data processing ability of the display chip becomes stronger and stronger, which makes the data transmission capacity and transmission rate of the video memory more and more demanding, and the video card also has higher requirements for the video memory. At this time, the exchange capacity and speed of the video memory are very important for the performance of the core of the video card, and how to effectively improve the performance of the video memory has become the key to improve the performance of the whole display cardBT download is affected by the number of concurrent connections. Your Internet device (cat or router) should turn on the UPnP function. Setting the port mapping can solve the problem of slow download. In addition, the uplink bandwidth will also affect the speed of BT. you can check the software settings to see if they limit the upload
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