Schlagwortarchiv für: Case


Selecting a suitable case for building a desktop PC has always been an important task because the selection of components is based on it as the space provided by the case matters a lot. Similarly, casing is one of the main constituents that contributes to the ventilation of the computer.  Corsair 7000D is one of the most spacious cases you will ever find if you are looking to build a high-end PC. If you are further interested in buying or searching for cases for your desktop PC then read this review of Corsair 7000D.

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Specifications of Corsair 7000D

Let’s have a look for specifications of the Corsair 7000D as that can give you the over review about the case and help you shortlisting the components for your desktop PC:

Motherboard

  • Mini-ATX
  • Micro-ATX
  • ATX
  • E-ATX

Cooling

  • This casing comes support with AIO water cooler
  • There are slots for fans on each side of the casing

Connectivity

  • Four USB Type-A ports
  • One microphone jack,
  • One USB Type-C port

Power Supply Unit (PSU)

Storage drive slots

  • Four 2.5 inches SSD slots
  • Six, 3.5 inches SSD slots

Review of Corsair 7000D PC Case

Generally, the casing does influence the PC performance as the cooling system is depending on it. moreover, before selecting a casing for your PC always analyze it on the basis of the following parameters:

Interior

Interior of the casing must have enough space to accommodate all the necessary components of the PC and they are arranged in such a way that there is no hindrance in the airflow for ventilation. So, when you open the glass side panel of the Corsair 7000D you will see the motherboard support at the front and at the bottom there is space for the power supply unit. Inside you will also see two pre-installed fans on the front which has a space for adding one more fan.

However, there are two other places where you can install three fans together, one at the top and the other at the other side panel vertically. When you remove the other side panel you will see a bracket installed on the left for the fans and a door on the right side which you can open to access the back of the motherboard bracket. At the bottom of the bracket, you can see the small brackets for your 2.5 inches SSDs.

For cable management there are straps provided at the back side of the motherboard panel to tie and route the cables. Moreover, there is a PWM fan hub which has 6 headers to control the fan speed of the PC. Similarly, there are 2 brackets having 3 slots each at the bottom of the right panel for your SSDs which seems to be more than enough, you can use them for some other purpose as well by removing them. At the bottom there is a filter provided for the power supply unit to keep it away from dust. Filter can be pulled out by pulling the tray below the PSU.

Foráneo

The outside of the Corsair 7000D is fascinating as one side is full tempered glass which can be opened just like a door. The front panel is fully perforated giving an optimal airflow for cooling the system, similarly the top panel is also fully perforated having a filter with it to keep the dust out.

The front panel has two 140 mm fans but if you want to add three fans then you have to use three 120 mm fans to fit them properly. All the panels are easily removable which make assembling of the PC finta easy, further, to keep Corsair 7000D high from the ground the case has four feet one at each side, this also provides help in lifting the case.

Final Thoughts on Corsair 7000D

To further summarize my review, I have mentioned some of the pros and cons of the Corsair 7000D:

Pros

  • Impressive design and build quality
  • Large number of I/O ports
  • Spacious
  • Good ventilation system
  • Full glass side panel

Cons

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Conclusion

The Corsair 7000D is one of the best choices for building a high-end desktop PC as it can accommodate a water cooling system and full ATX motherboard. Similarly, there are a number of slots available for the SSDs which eliminates the shortage on the memory capacity, and last but not least there is enough opening for the ventilation of the system. So, if you are looking  to build a high-end desktop and can spend some extra bucks then the Corsair 7000D is the best for you.



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Selecting a case for your desktop PC is one of the important decisions one has to make while building it as component selection of the PC is based on it. NR200P is one of the best cases Cooler Master provides, if you are looking for a small size case having a good airflow for a cooling system. To read more about NR200P read this guide as I have reviewed it in detail and explains some of its quirks and features.

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Specifications of NR200P

Before jumping to the review of this case, first let’s have a look at the major specifications of the NR200P as it will give an idea of if it is a right choice for you or not?

Motherboard

Cooling

  • This casing comes support with AIO water cooler,
  • There are slots for fans on each side of the casing

Connectivity

  • Two USB Type-A ports
  • One microphone jack

Power Supply Unit

 Storage drive slots

  • Three 2.5 inches SSD slots
  • One 3.5 inches SSD slot

Review of Cooler Master NR200P PC Case

Normally, the casing is one of the most important parts of the PC as it contributes greatly to cooling and performance of the system. So, following are the aspects that one should look for to see if NR200P can be the best casing for their PC or not:

  • Interior
  • Extranjero
  • Ventilation

Interior

While selecting a casing for building a desktop PC the interior of the case is of great importance as it should accommodate all the necessary components effectively. Moreover, in case of NR200P when you remove the side panel you will come across two pre-installed brackets; the one on the front is for mounting the AIO water cooler system or two fans. Whereas the one on the back is for the power supply unit and motherboard, you can remove the first bracket if you want to mount the fans or cooler at the top.

For the mounting of the SSDs you can see the mounts on the front side which can be accessed by removing the front panel. At the bottom there are cooling vents having a space for filters that come along with the case and some is the situation on the top. The NR200P comes with a PCIe 3.0 riser cable that can be used to mount the graphic card vertically which makes it easy to install the GPU.

Extranjero

Coming to the outside the NR200P has a boxy design that has perforated panels for better ventilation and has four feet to keep it high from the ground. The Cooler Master also gives the opportunity to 3D print your own design for the feet which is cool.

Along with the casing a glass panel comes packed nicely in a separate box which one can use instead of the perforated side panel. Another feature that might intrigue you is that all its panels including the top and bottom can be removed for better reach and easy PC building.

Ventilation

Electronics require good thermal conditions to work efficiently and that’s why keeping your PC cool is very crucial. The Cooler Master takes ventilation very seriously so nearly all their cases come with perforated panels which ensure optimal air flow. The NR200P comes with two sickleflow PWM fans which Cooler Master claims to be more efficient in cooling as they have curved design and are relatively quieter.

Final Thoughts on NP200P

Further to make it easy for you to decide that if the NR200P is a best choice for you or not; I have supported my review by giving some of the pros and cons of NR200P:

Pros

  • Easy to assemble PC components
  • Good cable management
  • Comes with dust filters
  • Comes with two cooling fans
  • comes in  seven colors

Cons

  • No Type-C USB slot
  • Top panel build quality is not good
  • PCIe ribbon is finta stiff

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Conclusion

The NR200P is the best choice for the people who are looking to build a mid-size gaming PC as it is spacious and has a good ventilation system. However, there is no USB Type-C slot provided in the case and the overall build quality is not so good. If you’re looking for a mid range case for your desktop PC then NR200P is the best buy for you.



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We will discuss about Pyspark – a significant data processing technology that can handle data on a petabyte-scale, PySpark When Otherwise, and SQL Case in PySpark When.

What is PySpark?

Spark is a general-purpose, in-memory, distributed processing engine that allows you to handle the data across several machines efficiently. You can develop Spark applications to process the data and run them on the Spark platform using PySpark. The AWS offers managed EMR and the Spark platform. You may use PySpark to process data and establish an EMR cluster on AWS. PySpark can read the data from various file formats including CSV, parquet, json, and databases. Because Spark is primarily implemented in Scala, creating Spark apps in Scala or Java allows you to access more of its features than writing Spark programs in Python or R. PySpark, for example, does not currently support Dataset. If you’re doing a data science, PySpark is a better option than Scala because there are many popular data science libraries written in Python such as NumPy, TensorFlow, and Scikit-learn.

PySpark “When” and “Otherwise”

“Otherwise” and “when” in PySpark, and SQL Case “when” working with DataFrame PySpark, like SQL and other programming languages, have a mechanism of checking multiple conditions in order and returning a value when the first condition is met using SQL like case and when(). Otherwise() expressions are similar to “Switch” and “if-then-else” statements in their functionality.

PySpark When Otherwise – when() is an SQL function that returns a Column type, and otherwise() is a Column function that produces None/NULL, if otherwise() is not used.

SQL Case in PySpark When – This is similar to an SQL expression, and it is used as follows: IF condition 1 is true, then the result is true, and vice versa.

Example 1

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import org.apache.spark.sql.functions.when

 

val df = Seq(

    («A B»,«2019-01-19»),
    («A A», «2019-01-10»),
    («B F», «2019-01-15»),
    («B E», «2019-01-30»),
    («C B», «2019-01-22»),
    («D O», «2019-01-30»),
    («E U», «2019-01-22»)

 

df.withColumn(«ends_with_B»,when($«word».endsWith(«B»),true).otherwise(false))

Example 2

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import org.apache.spark.sql.functions.{element_at,split,when}

 

val df = Seq(

    («BA»,«human»),
    («AB», «human»),
    («E_bot», «bot»),
    («D_bot», «bot»),
    («TT», «human»),
    («A_bot», «bot»),
    («C_bot», «bot»)

).toDF(«user», «type»)

df.withColumn(«isBot», when($«user».endsWith(«bot»), element_at(split($«user»,«_»),1)))

Conclusion

We discussed about PySpark, PySpark When, PySpark Otherwise, and SQL Case in PySpark When which are used to check multiple conditions and return the first element that follows the condition, along with some examples.



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SQLite has a case statement which allows us to include conditional logic in our SQL statements. SQLite case expressions execute a list of conditions and return an expression based on the results. SQLite case statements behave identically to IF – THEN – ELSE statements like the other scripting languages. If the phrase is valid, we can use the SQLite case statement inside any of the clauses or SQL statements. In genérico, the SQLite Case statement starts with an optional expression and one or more WHEN… THEN clauses, an optional ELSE clause, and a necessary END keyword.

Syntax of the CASE statement in SQLite:

In SQLite, the case statement usually has one of two forms.

SQLite simple Case statement:

CASE test_statement
WHEN [condition1] THEN [statement1]
WHEN [condition2] THEN [statement2]
……
……
……
WHEN [condition(n)] THEN [statement(n)]
ELSE [statement]
END

We use the syntax above to establish many conditions to reach the desired outcome. When and then clauses are used in the above syntax. They function in a logical order. To return the final output, this method compares each statement to the list of statements. This is a fairly easy approach for executing the case statement according to the user’s requirements. Each condition and statement are interdependent, meaning, when the first condition is true, the statement is only executed after that. This way, all conditions, and statements are executed. If a condition is false, control is transferred to the else part as seen in the above syntax.

To choose the outcome, the query case statement evaluates a list of statements. It’s worth noting that the simple case expression just looks for equity. Whereas, the looked-through case statement can use any form of inspection.

SQLite Search case statement:

CASE test_statement
WHEN [BOOLEAN statement1] THEN [statement1]
WHEN[BOOLEAN statement2] THEN[statement2]
 ELSE [ statement] END

If the Boolean statement in the specified grouping is valid, the Search case statement evaluates it and returns the corresponding result. When no valid statement is found, the query case statement returns the statement in the ELSE condition. If the ELSE clause is neglected, the looked-through case statement returns NULL. When the stated criteria are met, the search case statement terminates the assessment and execution.

Creating table for CASE statement in SQLite:

First, we have created a table and gave the name “Student” with the CREATE query. The table is set with the different columns such as ID with the data type integer and create ID as a primary key, NAME, and EMAIL is set with the data type TEXT. The last column CGPA is assigned a TEXT data type. The table Student and its attributes are shown in the SQLite shell as follows:

CREATE TABLE Student(
   …>       ID INT PRIMARY KEY    ,
   …>       NAME           TEXT   ,
   …>       EMAIL          TEXT   ,
   …>       CGPA           FLOAT
   …>     );

Now, we have to insert the values against each column of the table Student. With the SQLite INSERT query, we have inserted five rows in each of the columns specified in the table Student. The screenshot below is showing the way of inserting records into the table columns.

sqlite> INSERT INTO Student VALUES (2, ‘Ibrahim’,[email protected], 3.20 );
sqlite> INSERT INTO Student VALUES (3, ‘Maha’,[email protected], 3.9);
sqlite> INSERT INTO Student VALUES (4, ‘Jennifer’, [email protected], 2.5);
sqlite> INSERT INTO Student VALUES (5, ‘Rehan’, [email protected], 3.10 );

Let’s view whether the data is recorded in the table Student. By using the SELECT statement, we have retrieved the entire data in the table Student in a table format. The aforementioned statement is represented in the screenshot below:

sqlite> SELECT * FROM Student;

Example 1: Program of using SQLite simple CASE statement:

We have used a simple CASE statement with the SELECT statement to show the workings of the CASE statement in SQLite.

Here, we have used a SELECT statement and selected a column ID, NAME, and CGPA from the table Student. After that, we used a CASE statement that compares the CGPA of the Student. It matches the CGPA with the condition whether the CGPA is greater than or equal to 4.00 or not. If so, then it gives that CGPA an A+. But if the condition is false, then CASE will switch to the next statement and check whether the CGPA is greater than 3.5. If the condition is true, then it assign this CGPA a grade “A”.

Like this, the control is passed to each case statement until the CGPA does not meet the given condition. If all the cases are false, then the else clause will be executed and will print a statement FAIL.

sqlite> SELECT ID, NAME, CGPA,
   …> CASE
   …> WHEN CGPA >= 4.00 THEN «A+»
   …> WHEN CGPA >= 3.5 THEN «A»
   …> WHEN CGPA >= 3.0 THEN «B»
   …> WHEN CGPA >= 2.5 THEN «C»
   …> ELSE «FAIL»
   …> END AS «GRADE»
   …> FROM Student;

Now, we will perform the query and look at the outcome. It should look like this: The GRADE column is included in the table Student along with the values from the CASE statement.

Example 2: Program of using SQLite search CASE statement:

To determine the outcome, the searched CASE statement analyses a set of expressions. The simple CASE expression simply compares for equality. Whereas, the searching CASE expression can compare in any way.

A Boolean case statement is used in the example given. For this, we have a SELECT query through which we have selected three attributes ID, NAME, and CGPA from the table Student. Only these attributes and their corresponding values will appear as the output. Then, we have a CASE keyword for the SQLite CASE statement. The condition is applied with the WHEN keyword. First, case statement checks if the CGPA is greater than 3.5 and then assigns the grade A. If the condition is not satisfied here, then we will move to our second case statement which checks the condition whether is satisfied here or not. If both our cases are false, then the else part will execute and print the grade C.

sqlite> SELECT ID, NAME, CGPA,
   …> CASE
   …> WHEN CGPA > 3.5 THEN «A»
   …> WHEN CGPA >  3.0 AND CGPA < 2.5 THEN «B»
   …> ELSE
   …> «C»
   …> END «GRADE»
   …> FROM Student;

When executing the above CASE query, the results are obtained like this:

Conclusion:

We studied the basic syntax of case statements in this article. We also saw a variety of case statement instances. The rules for case statements were also taught. We learned using the SQLite case statement in this post and when to do so.



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