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Video tags
Subtitles
Russian
00:00:00
Many myths have always
been associated with computer00:00:03
hardware - some of them
do in some cases really have00:00:06
meaning, but there are enough
ingrained ones like “the heavier the block00:00:10
power supply, the
better it is, ”or“ the more00:00:15
video memory, the
faster the video card. ”00:00:18
And in this article
I will analyze00:00:23
the main myths
related to processors.00:00:29
1.00:00:36
The higher the frequency,
the faster the processor.00:00:39
The myth goes back to
the 90s when many users00:00:44
in order not to understand incomprehensible
Intel 386, 486 and Pentium just looked00:00:50
frequency - if some
processor had it higher,00:00:54
then he really turned
out to be faster.00:00:57
However, now this is generally
not true: processors can have00:01:01
different architectures with
completely different performance00:01:05
per hertz, so some Apple
A7 with a frequency of 1.3 GHz00:01:12
turns out to be at the level of Snapdragon
800 with a frequency of 2.2 GHz and in00:01:16
this is nothing strange.00:01:18
But when it comes to processors
of one generation and one00:01:21
line, then it generally works:
so, i5-8400 with a frequency00:01:27
2.8 GHz is actually slower than the
i5-8500 with a frequency of 3 GHz.00:01:38
2.00:01:43
Processors burn out from overclocking.
It is necessary to distinguish00:01:48
between software and hardware
parameters of the processor.00:01:51
So, the frequency is a
purely software parameter:00:01:54
for example, for energy
saving, it can be reduced to00:01:57
hundreds of
megahertz, and with a00:02:02
heavy load, fly up
to several gigahertz.00:02:04
Therefore, a banal
increase in frequency can00:02:06
not do any harm - the
maximum you get unstable00:02:10
processor’s work, but you00:02:13
won’t be able to
burn it in this way.00:02:14
Another thing is tension.00:02:16
This is a hardware parameter:
on the one hand, the higher00:02:22
the voltage, the higher
frequencies become available00:02:25
to the processor.00:02:26
On the other hand, every
processor has a secure00:02:29
voltage range, and
when you exit it there is a00:02:32
non-zero chance to
secure a trip to the store for00:02:36
new CPU.00:02:39
3.00:02:42
High temperatures
quickly kill the processor00:02:45
It is believed that working
at temperatures close to00:02:49
to the maximum, the
processor will live less.00:02:52
From a physical point of
view, this makes sense - at00:02:55
high temperatures, the
degradation of a silicon crystal00:02:59
goes faster.00:03:00
But there are two
important points: first, critical00:03:06
temperatures indicated
by manufacturers are taken00:03:08
with a good margin, often
a couple of tens of degrees.00:03:12
Secondly, the life of a
silicon crystal is many00:03:22
decades (now there are
enough aircraft in the early 90s,00:03:28
Whose “brain” is Intel 386 of
the same years, and they work00:03:34
perfectly), therefore, a
slight decrease in the lifespan00:03:40
when heated, you
are guaranteed not to00:03:46
notice, changing the
processor much earlier.00:03:47
But what really can
make the processor00:03:51
degrade faster is
the voltage increase00:03:53
close to critical: in
this case, negative00:03:57
effects can be seen
after a year - the processor00:04:00
will not be able to work
normally at the frequency with00:04:04
which there were no problems
when buying, and will have to00:04:07
reduce it.00:04:08
4.00:04:10
ARM architecture is better than
x86 Recently, there has been00:04:18
talk that ARM is better than x86,
and soon there will be massive00:04:25
the transition of computers
to a new architecture.00:04:28
It should be understood
that there is no such thing00:04:31
as good or bad architecture
- there is a good concept00:04:35
or a bad processor.00:04:37
Comparing ARM and x86
looks like comparing atomic00:04:42
reactor and internal
combustion engine: it seems that00:04:47
both take fuel at the inlet
and give energy at the exit,00:04:51
but they do it in completely
different ways, and in order00:04:54
to compare their performance
and effectiveness you need to00:04:58
take specific representatives
and compare them with each other.00:05:02
Similarly with architectures - it
makes sense to take representatives00:05:06
each and compare, and
then conclude that some00:05:11
Of these, faster / energy efficient /
cheaper, and the other vice versa.00:05:22
five.00:05:24
The more cores the
processor has, the better00:05:27
It would seem that
this is logical: more00:05:31
cores - means more
and performance.00:05:32
In practice, it all depends
on the specific task:00:05:36
for example, games still do
not know how to work properly00:05:39
with more than 8-12 threads,
and it might turn out like this00:05:43
that the top 32-core
Threadripper will show the best00:05:48
performance if you00:05:50
disable half of its cores.00:05:51
So you need to choose a
processor not by the number of cores,00:05:54
but by the capabilities of the
programs in which you work:00:05:57
another example is Photoshop,
in which a couple of fast00:06:00
cores still produce a much
better result than a dozen00:06:07
slow.00:06:08
Moreover - there is
still enough software that00:06:20
reacts negatively to
hyperthreading: when turned off00:06:36
logical cores performance00:06:47
may not fall, but rather grow.00:06:49
6.00:06:51
All these Xeon with AliExpress are a
headache and dancing with tambourines.00:06:58
Over the past few years, the
popularity of Xeon from Chinese00:07:02
trading floors has grown
significantly (as well as their prices,00:07:06
Alas).00:07:07
The reason for this is simple:
servers are moving to a newer00:07:09
“Iron”, and the old one, which has worked
for 5-7 years, is written off and sold00:07:14
for a penny, and
it is with great00:07:17
pleasure that the
Chinese buy it.00:07:19
As a result, often for 500-2000
rubles on Ali you can buy00:07:24
a top-end processor
for its socket, a desktop00:07:28
analog of which can
cost many times more.00:07:31
The main criticism comes from
the fact that with the LGA775 socket00:07:35
and the Xeon 5450 (and its
analogues), with which it all00:07:41
started, there really are some
problems - you need to reflash00:07:44
BIOS, not all boards are
compatible, and so on.00:07:47
But if we take newer processors
and sockets - for example, Xeon00:07:51
X3440 and LGA1156 - then there
are no problems at all, because00:08:01
that server CPU support is
already in the motherboard BIOS00:08:05
on LGA1156, and you just
need to replace the processor00:08:08
in the socket, after
which everything will00:08:13
work without dancing
with a tambourine.00:08:23
7.00:08:34
If the processor does not
reveal the video card, then00:08:39
this is a bad processor of
the “Sect of the Disclosers”00:08:41
formed just a few years
ago when with the release00:08:44
PlayStation 4 and
Xbox One game creators00:08:50
have greatly increased
CPU requirements.00:08:51
What does this “sect" "preach"?00:08:53
If the processor cannot
load the video card on00:08:55
100%, it means you either
paid for such a powerful video00:09:00
card in vain, or you saved
it on the processor in vain.00:09:03
Why is this happening at all?00:09:05
The processor in the game is
responsible for training for the00:09:09
video card, physics, artificial
intelligence, etc., respectively00:09:14
he can prepare a certain
number of frames per second00:09:17
- for example, 50.00:09:20
A video card can also process
and display a certain number of00:09:23
frames, and if there are more
than 50 frames per second, it00:09:27
will be idle for a while, and
the processor will be threshed00:09:31
100%, if less than 50 - on
the contrary, the video card will00:09:36
work at 100%, and the processor
will "rest" from time to time.00:09:40
Moreover, it should
be understood that top00:09:43
processors can also
prepare no more than a certain00:09:46
the number of frames per
second, just in their case, these00:09:50
numbers can be more than 100,
or even 200 - given the fact that00:09:54
they are often placed with top-end
graphics cards and ultra-settings00:09:59
graphics, it usually focuses
specifically on the GPU.00:10:03
But if you artificially take
and lower the resolution00:10:06
to HD, and the settings to
the minimum, you can see00:10:11
how some i9-9900K will work at
100%, and the GTX 1060 will cool.00:10:20
An easy conclusion can be drawn
from here - on processor dependence00:10:25
you can always get rid of it easily.00:10:28
Is the video card cooling?00:10:30
Raise the graphics settings,
increase the resolution - in00:10:33
the end you will get a more
beautiful picture with exactly00:10:36
same performance.00:10:38
Of course, we do not consider
the case when the processor00:10:41
pulls the game barely at
15 FPS - even then often00:10:46
it will be possible to fully load
the video card, but playing it00:10:49
will still not be pleasant,
although, of course, it’s beautiful.00:10:57
8.100% CPU load kills it faster00:11:02
Not the most common myth -
an analogy is usually drawn with a00:11:06
technique that, when working at
maximum, wears out and breaks00:11:10
faster.00:11:11
But there are no mechanical
parts in the processor, but00:11:13
degradation under normal
operating conditions - the process00:11:17
is extremely slow, and you
will buy a new one much earlier00:11:21
PC.00:11:24
nine.00:11:26
CPU water cooling
is better than air00:11:30
From the point of view of physics,
everything is correct: water (or large00:11:35
part of liquids)
- a much00:11:38
better conductor
of heat than air.00:11:39
However, it should be
understood that there is a market00:11:42
many so-called super
coolers capable of00:11:46
divert both 200 and 250 watts from the
processor, which is enough for your head00:11:52
99% of PC users,
and they often cost less00:11:57
NWO with the same capabilities.00:12:01
So it makes sense to take
a CBO only in two cases:00:12:05
or you have a powerful
processor in a compact case,00:12:08
and super coolers
don’t fit in it, or you have00:12:12
overclocked under 4.5 GHz top-end
32-core AMD Threadripper, consuming00:12:20
400+ watts00:12:21
In all other cases, dropsy
usually becomes a waste00:12:25
of money and possible
problems in the future.00:12:29
ten.00:12:47
Processor specifications
on the manufacturer's website00:12:50
- true in the last resort. It should
be understood that a lot of things00:12:54
on the manufacturer’s website
are written with marketing elements.00:12:59
Frank lie, of course, will not
be, but here are the shortcomings00:13:02
there may be a lot: for example, a heat
package is indicated for the new i9-9900K00:13:09
95 W, but in practice, even
without acceleration at the maximum00:13:14
TurboBoost frequency, it can
consume... as much as 200 W,00:13:19
that is twice as much.00:13:20
It would seem that Intel is lying?00:13:22
Not at all - with native 3.6
GHz, the processor really00:13:26
fits into 95 watts, and
TurboBoost is an optional feature.00:13:34
Therefore, it is
better to look at real00:13:37
performance and heat
dissipation in reviews.00:13:39
As you can see, there are
enough myths about processors.00:13:50
Do you know any more?00:13:51
Write about this in the comments.Description:
С компьютерным железом всегда было связано много мифов — часть из них действительно в некоторых случаях имеет смысл, но хватает и укоренившихся. Давайте разберемся, в этом видео 10 мифов о процессорах. Мифы об ОЗУ: https://www.youtube.com/watch?v=NH7LBTWRmTU Официальный канал самого популярного IT-сообщества. https://vk.com/myironcomp Текстовая версия: https://vk.com/@myironcomp-10-mifov-o-processorah
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