WEBVTT

00:00:00.440 --> 00:00:06.359
what is DDR for I think the least helpful explanation I could give for

00:00:04.279 --> 00:00:10.759
this topic is well it's short for double data rate fourth generation synchronous

00:00:08.320 --> 00:00:13.599
Dynamic random access memory and at this point you're probably sitting there

00:00:11.599 --> 00:00:18.960
going Dr ramit Linus those are just words I want to know what it does okay

00:00:16.320 --> 00:00:22.880
fine let's start with what memory or RAM is actually for in your system let's

00:00:20.760 --> 00:00:29.320
imagine for a moment that uh a builder is like a CPU doing work and tools are

00:00:26.199 --> 00:00:31.119
like data so a processor's cache is a

00:00:29.320 --> 00:00:35.399
very small ount of incredibly fast storage directly on board this is kind

00:00:32.880 --> 00:00:40.760
of like the hands of our Builder he can't keep much there but it's really

00:00:37.520 --> 00:00:42.640
fast to access next up is RAM or working

00:00:40.760 --> 00:00:47.840
memory this is whatever our Builder can store on his belt or nearby as he works

00:00:45.640 --> 00:00:51.000
it's slower to get to than cash and he can't keep everything he could possibly

00:00:49.280 --> 00:00:54.800
need there but it should be enough to complete whatever is the current task

00:00:53.079 --> 00:00:59.199
next up is mass storage which would be your SSD or hard drive this is much

00:00:57.079 --> 00:01:03.000
slower than RAM to access kind of like going down the ladder to grab something

00:01:01.320 --> 00:01:06.080
from his truck and then if we wanted to keep the analogy going even after it's

00:01:04.600 --> 00:01:10.000
worn out it's welcome we could say that off-site storage like over the Internet

00:01:08.159 --> 00:01:14.840
is kind of like driving to the store to buy a new tool outright it's that much

00:01:11.640 --> 00:01:17.040
slower again so there you have it RAM is

00:01:14.840 --> 00:01:22.000
the tools or data bringing it back to computers that your CPU needs to

00:01:19.119 --> 00:01:26.320
complete its current task or tasks so the more of it you have the less often

00:01:24.240 --> 00:01:30.280
you the Builder will need to go down the ladder to retrieve things and the faster

00:01:28.520 --> 00:01:33.840
it is the less downtime time you'll need to deal with every time you realize

00:01:32.119 --> 00:01:39.240
you're holding your drill when actually you need a circular saw on to ddr4

00:01:36.840 --> 00:01:44.360
specifically it's the next evolutionary step forward in memory technology from

00:01:41.000 --> 00:01:46.159
DDR 3 I know go figure right but jck

00:01:44.360 --> 00:01:51.000
hasn't been sitting on their thumbs for the past half a decade and this isn't a

00:01:48.360 --> 00:01:55.719
small upgrade compared to DDR3 it offers over 20 new features so I think it goes

00:01:53.759 --> 00:01:59.240
without saying that it's not backwards compatible and you'll need a new

00:01:57.039 --> 00:02:03.399
motherboard and CPU to use it sounds expensive why would I even want that

00:02:01.079 --> 00:02:08.080
lonus well first up it's going to improve performance aside from allowing

00:02:05.840 --> 00:02:13.879
much higher clock speeds we're talking 3200 MHz stock ddr4 is a bigger change

00:02:12.280 --> 00:02:17.640
than it might at first appear to be with some clever architectural Wizardry

00:02:15.959 --> 00:02:23.000
designed to improve performance particularly in multicore systems next

00:02:20.519 --> 00:02:28.040
up we've got capacity right off the bat ddr4 will be capable of double the

00:02:25.319 --> 00:02:32.000
density per die but perhaps equally important is that it can support up to

00:02:29.879 --> 00:02:37.519
to eight dies per package instead of four which combined translates into an

00:02:34.879 --> 00:02:43.680
effective quadrupling of DDR 3's theoretical maximum capacity of 128 GB

00:02:40.120 --> 00:02:46.280
per module yeah 512 GB memory sticks

00:02:43.680 --> 00:02:49.760
baby but of course for now that benefit along with some of the others won't be

00:02:47.640 --> 00:02:54.400
very applicable to home users a couple more such improvements are the 40% or so

00:02:52.239 --> 00:02:59.280
reduction in power consumption due to ddr4 better power management and lower

00:02:56.959 --> 00:03:04.959
operating voltage as well as its support for much more advanced error detection

00:03:02.120 --> 00:03:10.080
prevention and correction this last one is going to be key as capacities grow to

00:03:07.480 --> 00:03:14.040
the point where errors become actually inevitable speaking of inevitable errors

00:03:12.440 --> 00:03:18.440
going to the store to buy replacement razors if you haven't already signed up

00:03:16.120 --> 00:03:21.720
for Dollar Shave Club yes it's been a while since we've talked about Dollar

00:03:19.840 --> 00:03:26.480
Shave Club but that doesn't mean that the scary man with the weapon

00:03:24.280 --> 00:03:31.879
obscenities private Army and trained bear is gone oh no he's still watching

00:03:29.200 --> 00:03:34.439
you in the bathroom or maybe that was me someone's watching you shave I mean what

00:03:33.360 --> 00:03:38.439
did you think we were watching you doing that's gross we'll never know who it was

00:03:36.599 --> 00:03:41.920
anyway the point is that for just a few bucks a month Dollar Shave Club delivers

00:03:40.080 --> 00:03:45.599
high quality razors and other bathroom supplies straight to your door the club

00:03:43.720 --> 00:03:49.640
is available in the US Canada and Australia for my friends down under and

00:03:47.959 --> 00:03:53.120
aside from their great razor blades and shave butter they've got one wipe

00:03:51.400 --> 00:03:56.799
Charlie's butt wipes for men for my enemies down under if you catch my drift

00:03:55.400 --> 00:04:02.439
anyway that's pretty much it head on over to dollarshaveclub.com and join the to

00:04:00.079 --> 00:04:04.879
start shaving time and shaving money thanks for watching guys like this video

00:04:03.720 --> 00:04:09.000
if you liked it dislike it if you disliked it leave a comment if you have suggestions for future episodes of

00:04:07.400 --> 00:04:12.439
fastest possible or just anything to say to us about this particular one I think

00:04:11.360 --> 00:04:17.239
that's pretty much it don't forget to subscribe if you haven't already and I'll see you again next time