Computer Specs You Should Ignore

Techquickie ·Techquickie ·2022-05-05 · 1,033 words · ~5 min read
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0:00 Whenever you shop for electronics,
0:01 it's pretty easy to get lost
0:02 in a discombobulating vortex of numbers
0:05 that manufacturers throw at you
0:07 to try to entice you to buy their gadgets.
0:09 Ah!
0:10 But there are some that are really just fluff
0:12 you can more or less ignore.
0:14 So what are they?
0:15 Let's start out with one of the most common
0:17 and most useless specifications you'll see,
0:20 a CPU's clock speed, usually given in gigahertz.
0:23 You'll see this as being one of the first things listed
0:26 for most PCs that you buy,
0:27 and it's very easy to think,
0:29 hmm, more gigahertz equals faster computer.
0:33 See, here's the thing.
0:34 You can't really compare clock speeds
0:36 between different computers.
0:38 Processors have all sorts of other differentiating factors
0:41 that are more important,
0:42 such as the specific microarchitecture they use.
0:45 Each new generation of CPUs
0:47 typically contains microarchitectural improvements
0:49 in the silicon that can give you higher instructions
0:52 per clock cycle, better branch prediction,
0:54 and more power efficiency,
0:56 all of which are more important
0:57 than the raw number of gigahertz.
0:59 Clock speeds only really matter
1:01 when you compare chips with the same microarchitecture
1:04 and the same number of cores.
1:06 Otherwise, you're not gonna wanna fret over this too much.
1:08 It's kind of like how a Kia Rio
1:09 and an Aston Martin Vantage
1:10 can both reach 100 miles per hour,
1:12 but the Aston Martin's gonna get up to speed much faster
1:15 and be far more powerful and responsive.
1:18 Next up, let's talk about those eye-popping speeds
1:21 that SSD companies put on their product labels.
1:23 It's pretty easy these days to find SSDs
1:25 that claim to give you speeds at or above
1:27 3,000 megabytes per second,
1:29 but those figures can be misleading.
1:32 And while it's true that the NVMe-based SSDs
1:34 that boast this kind of performance
1:36 are indeed faster across the board
1:38 than their older SATA counterparts,
1:40 it doesn't mean you can completely trust their numbers either.
1:43 You see, there are two main issues
1:44 with just looking at that spec.
1:46 Those high megabytes per second numbers
1:48 refer to sequential performance,
1:50 meaning it's not a good metric of performance
1:52 if you spend most of your time watching videos,
1:55 working in Excel, or serving up spicy takes on Twitter.
1:58 During typical everyday use,
2:00 the random performance given in IOPS is more important,
2:03 as you'll usually be accessing smaller pieces of information
2:06 from different places on the drive
2:08 than large sequential chunks of data
2:10 located in a physically contiguous spot.
2:13 But let's say, for the sake of argument,
2:14 you do work with large amounts of sequential data
2:17 because you're a video editor or some such thing.
2:20 Even in this situation,
2:21 the numbers on the spec sheet often aren't reliable.
2:24 Many SSDs have a relatively small amount of fast cache,
2:28 that's used when you first start moving files around.
2:30 But as time goes on,
2:31 sometimes even after just a few seconds,
2:34 speeds will drop off precipitously as the cache fills
2:37 and the SSD starts using the slower portion
2:40 of its flash memory.
2:41 Now this isn't to say all SSD manufacturers are dishonest,
2:44 but some of them will put down a speed
2:46 that you'll only realistically get
2:48 for a short period of time.
2:49 So be sure to read independent reviews
2:52 and see how long the SSD you're interested in
2:54 can maintain performance at or near
2:57 what it says on the spec sheet.
2:58 Finally, let's touch on a common letdown
3:00 if you're shopping for monitors, HDR support.
3:04 HDR or high dynamic range is a set of standards
3:07 that can give you better contrast and clearer colors.
3:10 But a monitor simply saying it has HDR support
3:12 doesn't tell you very much,
3:14 since there are a lot of monitors out there
3:15 that technically accept an HDR signal,
3:18 but the picture ends up looking like absolute garbage
3:20 when you turn it on.
3:22 So why does this happen?
3:23 The two primary culprits
3:25 are when the monitor can't get bright enough,
3:27 as adequate brightness is crucial for HDR to look correct.
3:31 And when the monitor can't display
3:32 a wide enough color gamut or give enough color accuracy
3:36 to take full advantage of the HDR signal.
3:38 So instead of jumping on a monitor
3:40 just because it says it has HDR support,
3:42 check its peak brightness rating.
3:44 Anything that's certified for VESA display HDR 600 or higher
3:48 should at least get adequately bright
3:51 with display HDR 1000 or higher being ideal.
3:54 A monitor that can cover at least 90%
3:57 of the IP3 color gamut is probably also a decent bet.
4:01 But if you really want to be sure,
4:02 read reviews where an actual human being
4:05 looked at the screen with HDR turned on.
4:07 Are there specs that manufacturers push that frustrate you?
4:10 Let us know what they are in the comments
4:12 and we might talk about them in a future episode.
4:14 Really just lay into us here.
4:17 Talk about your frustrations.
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