Explainers

SSD and HDD: What’s the difference?

Published

on

For the past few years, solid-state drives (SSDs) have become quite popular in the computing world, mostly because of how fast they are compared to hard disk drives (HDDs). So, what exactly sets an SSD apart from an HDD?

Nowadays, computers use non-volatile medium for storage, which means data that’s stored in it doesn’t get lost once the computer shuts down. Storage for modern-day computers and notebooks have been handled by hard disk drives for the longest time and it’s only now, with SSDs becoming more affordable, that consumers are seeing a different storage medium in their computers.

Hard disk drives have mechanical parts

If you aren’t familiar, hard disk drives store data on circular disks made up of aluminum, glass, or ceramic that are coated with a magnetic layer, often called platters. Since these platters are responsible for holding the data, the storage capacity of an HDD is dependent on how many platters it has.

The big disks are the platters and the arm hovering above is the actuator arm.

When the computer’s processor sends out instructions to read and write data, the motor on the drive moves the actuator arm across the platter. At the end of the actuator arm are the read/write heads which are made up of tiny magnets responsible for reading data already stored on the platter or writing new data on the empty spaces on the platter. The combined movement of the actuator arm and the rotation of the platter allows the computer to read and write data, which is kind of like the arm of a record player touching a vinyl record to play music.

Having all these moving parts means an HDD’s read and write speed is dependent on how fast the platters can rotate and how fast the actuator arm can track locations on the platter. These parts can only move up to a certain speed or else they’ll break down, and nobody wants a broken storage device. As with all mechanical parts, heat and noise are by-products of their movements, which is why an HDD can become hot and/or noisy during operation.

Solid-state drives have no moving parts

From its name, an SSD is a drive that uses a type of solid-state storage called flash memory, which is also a non-volatile storage medium, to store and retrieve data. Each flash memory chip found in the circuit board of an SSD contains memory cells that are made up of floating-gate transistors, which are a special type of transistor that can store or discharge an electrical charge in its cage-like part called the floating gate. The storing capability of these transistors is what allows the data to remain, even when there’s no electricity flowing through them.

Inside an SSD is a circuit board with a bunch of embedded chips, including the flash memory, controller, and cache.

As mentioned, an SSD doesn’t have moving parts like the actuator arm and motors of an HDD. Instead, it has an embedded processor called a controller. Much like the computer’s processor, the controller does all the heavy lifting, as it’s the one responsible for locating the blocks of memory where data can be read or written to.

This is also the reason why SSDs perform faster than HDDs; since they don’t need to wait for any moving parts to read or write data, the controller just needs to receive the instructions from the computer’s processor and it can start reading or writing data.

SSDs may not suffer from a mechanical breakdown, but they’re far from faultless. Flash memory can only have data written and erased a finite number of times before its cells degrade and become unreliable. This means an SSD can only write a certain amount of data before it fails, which is why SSD specification sheets typically include Terabytes Written (TBW), so consumers know how much data can be written into the drive before it eventually fails. However, SSDs these days can last more than ten years in typical day-to-day usage.

Both storage mediums have pros and cons

So, is a solid-state drive better than a hard disk drive, or vice-versa? Sadly, there’s no simple answer to this question, as it all depends on the needs of the consumer, which usually involves speed and storage capacity.

On one hand, if a person wants faster read/write times, an SSD is the clear winner, but you’ll lose out on storage capacity, since most SSDs today start from 120GB and can only go up to 1TB or 2TB. Mind you, those high-capacity SSDs will surely burn a big hole in your wallet.

On the other hand, if a person values capacity more, an HDD is the better option, with drives typically ranging from 500GB to 6TB of storage capacity for mainstream HDDs. Also, HDDs don’t cost an arm and a leg compared to SSDs if you want to get large-capacity ones.

With these in mind, there’s no stopping consumers from having both an SSD and an HDD in the same system. Setting up an SSD as your main drive with the operating system and other important software, while having a secondary HDD to store all your media and personal files, would net you the best of both worlds: a speedy system boot up without sacrificing storage space.

[irp posts=”2500″ name=”LTE-A Explained”]

Explainers

Here’s how India is trying to be China in the smartphone game

The world’s second-largest smartphone market has more to offer

Published

on

China is practically the world’s production powerhouse. And India wants to follow the same path. India’s Central government has approved three schemes to enable large scale electronics manufacturing and attract fresh investments worth almost INR 50,000 crore (US$ 6.3 billion) in the sector.

The government aims to provide companies a production-linked incentive of 4 percent to 6 percent on incremental sales for locally made goods over a period of five years. This not only includes mobile phone manufacturing but also assembly, testing, marking and packaging.

The other policy offers a 25 percent financial incentive for capital expenditure that goes towards “the manufacturing of goods that constitute the supply chain of an electronic product”. With these incentives, the government is optimistic that companies will come to India, contribute to progressing infrastructure, and make export-quality goods.

Inauguration of Samsung’s Noida Factory in India

According to their estimates, domestic value addition for mobile phones is expected to witness 35 to 40 percent jump by 2025, from the current 20-25 percent.

So far, companies have focused on assembling equipment like smartphones in India. A huge chunk of the components are still imported. These policy changes could act as a stimulant to locally source electrical components, semiconductors, as well as develop production clusters.

Bangalore and Hyderabad are infamous for their IT Tech Parks that house thousands of employees from IT service firms like TCS, Infosys, Accenture, and many more. Similarly, the government wants to create production clusters that can develop an eco-system of their own. These clusters can create a seamless supply chain when paired with proper land, air, and shipment infrastructure.

The timing of the announcement is what matters the most. China is embroiled in a trade war with the US for quite some time and we’ve seen how a giant like Huawei got caught in the cross-fire. Companies are skeptical about depending too much on China for production and sourcing. Hence, countries like Vietnam have witnessed a huge inflow of foreign investment from the likes of Nintendo, Foxconn, and even Samsung.

India is very much like Vietnam. A developing economy that’s on the look-out for foreign investment and enhances local production capabilities. This not only helps the government increase its tax revenue via taxation, but also provides employment. Considering the current Coronavirus crisis, it’s obvious that these plans may not materialize soon. But, as soon as the storm is gone, companies would want to find an alternative to China.

Prime Minister, Narendra Modi with Apple CEO, Time Cook

It’s reported that the alleged low-cost iPhone from Apple has been delayed due to the pandemic. Irrespective of the current health crisis, Apple has been trying to ramp up its local production in India and has done so, cautiously. India is the world’s second-largest smartphone market and every brand wants a piece of the cake. Realme and Xiaomi have been intensely fighting for supremacy, Samsung continues to lead via the offline market, and OPPO and Vivo have flooded all commercial banners with their products.

Xiaomi currently has seven plants in India, major ones being at Sri City and Sriperumbedur. It also makes its televisions in Tirupathi. Manu Kumar Jain, Vice President, Xiaomi, and Managing Director, Xiaomi India said that 95 percent of Xiaomi’s phones are made in India with 65 percent of a phone’s value being sourced locally. The government has been successful in compelling companies to make in India because it consistently kept on raising import duty on smartphones.

Samsung already has the world’s largest mobile phone factory in India that assembles top-tier variants, ready for export. We don’t know the volume it churns out right now, but their long-term investment is a precedent for other brands to take the market seriously. OnePlus has a research facility in Hyderabad where it makes software products intended for the Indian market.

Samsung’s factory in Noida, India

According to industry ICEA, the NOIDA region (a part of Delhi NCR) has close to 80 mobile manufacturing factories that provide employment to approximately 50,000 people. It’s normal today to see companies release press notes announcing new facilities across the country that’ll employ thousands of people.

Prime Minister Narendra Modi kickstarted the “Make in India” campaign five years ago to encourage foreign companies to invest and build in India. While its effects are debatable in a few industries, there’s no doubt that the mobile industry has picked up exponentially. State governments of Karnataka, Andhra Pradesh, Telangana, Uttar Pradesh, and Tamil Nadu have played a major role in establishing these clusters that symbolize progress.

Engineers are widely available in India, the country has developed multiple ports under the private-public model, and numerous airports are under construction. India is already the world’s second-largest smartphone maker, but the gap is huge. It’s about briding this. Obviously, the scale at which China produces is unmatchable. But that cannot undermine India’s efforts to be more relevant on the global stage. From a purely consumption-based economy, it’s slowly trying to turning into a production backed state.

Continue Reading

Explainers

Explaining smartphone display refresh rates

Are they really any different from PC displays?

Published

on

Smartphones, little by little, are turning into mini-PCs with the features that come with it. From browsing on social media to playing video games, technology is slowly adopting a more “on-the-go” lifestyle. Recently, smartphones have acquired another feature that your own desktop or laptop already has.

Some of the recently released premium and gaming smartphones now come with displays having their own dedicated refresh rate. Refresh rates aren’t new, but to see it on a compact device has a lot of people wondering. How different or similar is it to a PC’s refresh rate? And is it actually something good to have?

A crash course on refresh rates

A display’s refresh rate, basically is the number of times your display updates every second. Your screen usually takes a few seconds to just a second to load new images, depending on that rate. For example, a 60Hz refresh rate means that in one second, any image on your display is refreshed 60 times. Your eyes wouldn’t catch it fast enough, but that’s how your display works.

For most PC displays, the default is at 60Hz with companies releasing displays that range up to 240Hz. You mostly see this in displays fit for gaming purposes, since gamers prefer the higher refresh rate for improved performance. If you’re someone who mostly likes to watch movies, it really doesn’t matter how high the refresh rate is.

Note that this is entirely different from frame rates, in that these show how many images are produced within a second. Although, having a high refresh rate allows you to perform a lot better because it is optimized for higher frame rates. That’s why you see some gamers complain about playing on a 60Hz display.

Transitioning to a smartphone near you

Eventually, the concept of amping up a refresh rate will reach the world of smartphones. In fact, the OnePlus 7 Pro was actually the first mainstream smartphone to have a display with a 90Hz refresh rate. Most smartphones, even budget ones, have displays built with a 60Hz refresh rate. Something about it just makes you scroll through your phone without feeling too dizzy, unless you scroll too fast.

Premium smartphones mostly incorporate either a 90Hz or 120Hz refresh rate for a smoother UI experience. With higher refresh rates, scrolling through your phone feels a lot smoother without risking an eye sore. Of course, these smartphones do cost significantly more than your average, everyday smartphone.

Apart from premium smartphones, gaming smartphones have also incorporated higher than 60Hz refresh rates. Phones like the Razer Phone 2 and the ASUS ROG Phone 2 both come with a 120Hz refresh rate to suit mobile gamers, especially FPS (first-person shooter) gamers. With these higher refresh rates, mobile gamers see clearer images with less motion blur involved.

Do you really need all the hertz?

That begs the question: what do you need a high refresh rate screen for? When you use a PC, 60Hz is already good for most tasks and games. Trying to go for higher refresh rates usually means that you’re doing a lot more than the ordinary. Tasks such as heavy-duty data analytics or hardcore gaming are optimal for higher refresh rates.

The same logic works for smartphone displays, except on a smaller screen size. A lot of what you can do, you’re able to do so on 60Hz displays. If you’re just using your phone to browse social media, watch Netflix on the daily, and play games casually, you don’t need anything higher. Although, it is a premium to have if you want buttery smooth software.

If you play games competitively, you would prefer higher refresh rates just like in gaming monitors. Higher refresh rates allow you to perform at an optimal level when going for higher frame rates. We’re talking close to no image tearing or motion blur when you play PUBG Mobile or Call of Duty. While you can perform well at the default 60Hz, going for a 90Hz or 120Hz ideally makes the experience better.

Some final thoughts

Smartphone display refresh rates have always been a part of the technology. These displays were built in a way that everyone can benefit from them. It’s only fairly recently that smartphone companies came up with a way to make the experience a lot smoother. Hence, smartphones started incorporating higher refresh rates.

It almost feels like having that high refresh rate is a premium, given only select smartphones have it. But it’s a premium that you don’t really need unless you have a good reason to. Apart from the cost of experiencing it, it really depends on what you plan to do with your smartphone.

At the end of the day, it’s better to ask yourself if it’s a feature worth getting. If it’s something you feel you can’t live without, by all means, right?

Continue Reading

Automotive

Stranger Things 3: What exactly is an ignition cable?

Possessed Billy knew what he was doing

Published

on

By now, you’ve probably seen the third and newest season of Stranger Things on Netflix. If you still haven’t, it goes without saying that there are spoilers ahead and you should stay away from this article.

Seeing a pop culture reference such as Stranger Things together with the seemingly unrelated world of automotive in one writeup such as this could be strange (pun intended) for some. We really don’t mind and thought it would be a fun and unique way to talk about the show and learn a few things from it, as well.

So we ask the question: What exactly is an ignition cable?

The ignition cable is part of a vehicle’s ignition system. In simplest terms, it’s a mechanism that starts the engine. By generating a high voltage from the car’s battery to the spark plugs in its engine, it causes them to ignite the engine’s combustion chambers and get it up and running.

And in order to transfer that voltage from the source to the engine, you’ll need an ignition cable as it’s like a subway system that acts as pathways for the voltage to pass through. So if the ignition cable is not present, there’s no way to start the car.

Back to Stranger Things, Billy (although already possessed by the Mind Flayer) obviously still had his knowledge on cars so he took away the ignition cable trapping our favorite gang at Starcourt Mall’s parking lot.

Just to further stress the importance of an ignition cable and the whole ignition system for that matter, we’d like to visit other possibilities and ask, “What if Billy didn’t take it away?”

Well, the plan was for Eleven and her group to go to Bauman’s secret place and stay safe while Joyce, Hopper, and the rest try to close the portal and render the Mind Flayer powerless. If their ignition cable was intact, they’d be a lot safer away from the Mind Flayer although we wouldn’t be able to see that amazing fireworks scene inside the mall.

Through this, we see the importance of that one small part under the hood of the car. In real life, it really pays to make sure that everything is in good working condition and that one faulty cable could mean trouble for you if remained unaddressed — unless there’s a car on display inside a mall somewhere that you can take spare parts from!

SEE ALSO: Netflix launches AR Trailer with Stranger Things 3

 

Continue Reading
Advertisement

Gadget Reviews

Trending