Dadka intooda badan waqti badan kuma bixiyaan ka fikirida RAM . Ma aha kacsi sida CPU ama GPU ka dib oo dhan. Inta badan, qof kasta oo danaynaya waa in ay jirto wax ku filan baahidooda. Si kastaba ha ahaatee, runtu waxay tahay in ay jiraan wax badan oo RAM ah^(RAM) oo ka badan awoodda saafiga ah.

Hagaajinta tignoolajiyada xusuusta ayaa ah qayb muhiim ah oo ka mid ah sababta waxqabadka kumbuyuutarku u wanaagsan yahay. CPU-da ugu dhaqsiyaha badan adduunka waxa ay ku shaqayn kartaa oo keliya xawliga snail-ka haddii xogta lagu quudiyo RAM duugoobay^(RAM) oo gaabis ah . Waqtiga qorista, waxaa jira saddex nooc oo RAM ah^(RAM) oo lagula dagaallamo marka la dhisayo ama la iibsanayo kombuyuutar. 

Waxaa jira DDR3 , kaas oo si fiican u jiray in ka badan toban sano laakiin weli ku jira kombiyuutaro badan oo la isticmaalo maanta. Ka dib waxaa jira DDR4 , oo ah heerka hadda ee kombiyuutarada cusub. DDR5 wali lagama helin kombuyuutar aad iibsan karto, laakiin heerka waxa si rasmi ah loo sii daayay badhtamihii 2020.

Taas oo macnaheedu yahay ma dheeraan doonto ilaa qalabka DDR5 dhabta ahi bilaabo inuu soo raro. ^(DDR5)Haddaba, waa maxay faraqa u dhexeeya jiilashan RAM -ka ah iyo midka kuugu habboon inaad maanta doorato?

Waa maxay DDR?

Ka hor inta aynaan u dhex gelin farqiga jiilka u dhexeeya DDR-yada kala duwan ,^(DDRs) waxaa habboon in la sharaxo waxa "DDR" uu yahay meesha ugu horeysa. Ma aha Kacaanka Qoob ka ciyaarka qoob ka ciyaarka^{(Dance Dance Revolution)} , haddii ay taasi tahay meesha maskaxdaadu isla markiiba tagtay. Ma aha inaan taas wax ka ogaan lahayn!

Maya, DDR waxa ay u kooban tahay Double Data Rate oo waxa ay tilmaamaysaa habka gaarka ah ee tignoolajiyadan xusuusta ahi ay u adeegsato in ay ku qabato qalliinka ugu sarreeya iyo meesha ugu sarreysa ee wareegga saacaddeeda. Si kale haddii loo dhigo, chip-ka xusuusta DDR ee ku shaqeeya 100Mhz wuxuu sameeyaa tiro la mid ah hawlaha SDR ( Single Data Rate ) ee ku shaqeeya 200Mhz.

Tani waa sababta xawaaraha xusuusta DDR loogu qoray laba jeer xawaaraha dhabta ah ee moduleka. Tusaale ahaan, DDR3 1600 RAM run ahaantii wuxuu ku shaqeeyaa 800Mhz.

Farqiga Bandwidth

Mid ka mid ah farqiga ugu muhiimsan ee u dhexeeya jiilalka kala duwan ee DDR waa qadarka xawaaraha bandwidth ay bixiyaan. Jiil kasta oo isdaba jooga waxa uu soo bandhigay bood-bood weyn oo ku saabsan heerka wareejinta xogta. Dabcan, waxaad iibsan kartaa DDR3 -dhamaadka sare oo ku soo dhawaada dhamaadka hoose ee DDR4 oo la mid ah waxay u badan tahay inay run tahay DDR5 . 

Waxaa hubaal ah in ay jiri doonaan xoogaa isku-kordhin ah oo ku yaala cidhifyada kala duwanaanta alaabta. Si kastaba ha ahaatee, ilaa aad hiigsanayso inaad dhisto nidaamka qiimaha ugu hooseeya, jiil kasta oo cusub waa inuu si aad ah uga dheereeyaa kii ugu dambeeyay.

Intee in le'eg ayaa farqi u dhexeeya korodhka xajmigu sameeyo? 

Guud ahaan way ka wanaagsan tahay in la haysto RAM ka gaabinaya qadar yar oo RAM ah^(RAM) . Si kastaba ha noqotee, da'da NVME SSDs iyo CPU-yada leh koofiyado badan ,^(cores) waxay noqonaysaa mid aad uga muhimsan waligeed.

Jiilka DDR - ka ee CPU -gu uu taageero, kala duwanaanshaha xajmiyeedka ayaa ah kuwa aad muhiim u ah, laakiin waxa arrintu tahay adeegsiga xusuusta-kanaalka badan. Si kale haddii loo dhigo, haddii Motherboard-kaagu uu taageero laba (ama ka badan) xusuusta kanaalka, hubi inaad haysato tirada saxda ah ee modules meelaha saxda ah si aad awood ugu yeelatid.

Isticmaalka Korontada

Jiil kasta oo cusub oo RAM ah^(RAM) , waxqabadka ayaa kor u kacaya isticmaalka korantaduna hoos ayuu u dhacayaa. Tani waxay si gaar ah faa'iido u leedahay marka la tixgelinayo kombuyuutarrada gacanta, laakiin isticmaalka tamarta yar oo leh waxqabad wanaagsan marnaba maaha wax xun xaalad kasta. 

Inkasta oo RAM -ku aanu ahayn qaybta ugu baahida badan ee tamarta, marka lagu daro kaydinta tamarta ee qaybaha kale waxay dhammaantood ku kordhinayaan hoos u dhac weyn oo baahida tamarta ee nidaamyada casriga ah. 

Khadka ugu hooseeya ayaa ah in nidaamka DDR3 ay u badan tahay inuu ku adkaado batterigaaga ama biilka korontada, sababtoo ah qaybaha loogu talagalay inay la shaqeeyaan jiilkaas DDR waxay isticmaali doonaan awood dheeraad ah xilligooda.

Cabbirrada Buffer Prefetch

Prefetch Buffer waa aag RAM ah^(RAM) oo xogta lagu shubo ka hor inta aan loo dhiibin CPU . Heerka DDR^(DDR) ee asalka ah wuxuu soo qaadan karaa hal unug oo xog ah, laakiin DDR wuxuu samayn karaa labanlaab in ka badan markiiba. DDR3 iyo DDR4 waxay sameyn karaan sideed cutub oo cajiib ah hal mar halka DDR5 ay kor ugu kici karto 16, iyadoo ku xiran nooca gaarka ah. 

Way sii weyn tahay kaydinta prefetch waa, inta badan waxtarka RAM waa. Tani waa sababta oo ah waxaa jirta fursad weyn oo kaydiyuhu ka kooban yahay xogta uu CPU u baahan yahay soo socda haddii ay ka weyn tahay. 

DDR3 , DDR4 iyo qaar ka mid ah modules-ka DDR5 dhamaantood waxay leeyihiin cabbir xaddidan oo siddeed unug ah. Markaa ma jiraan wax kala saaraya xagga hufnaanta. Xusuusta DDR5^(DDR5) oo leh cabbir 16-cutub ah oo cabbirkoodu ka kooban yahay waxay ka dhigan tahay boodayn weyn oo warqad ah, laakiin weli ma cadda inay tahay casriyeyn xusid mudan oo ku saabsan xisaabinta adduunka dhabta ah isticmaaleyaasha intooda badan.

Kala Duwanaanshaha Jireed

Naqshad ula kac ah, jiilalka kala duwan ee DDR waxay leeyihiin arrimo qaab qalab oo kala duwan. Dhammaantood waxay ku yimaadaan qaab DIMM ah (Dual Inline Memory Module)^{(DIMM (Dual Inline Memory Module))} , laakiin xargaha cidhifka xidhiidhiyaha ayaa ku yaal meel kale.

Tani waxay ka dhigaysaa mid aan suurtogal ahayn in xusuusta la geliyo booska khaldan. Taasi waxay noqon doontaa dhibaato gaar ah maadaama heerarka DDR ee hore ay isticmaalaan koronto aad uga badan tignoolajiyada cusub. Boof!

Waa maxay LPDDR?

Waxa jira nooc ka mid ah DDR oo aad ka heli doonto buugaagta ultrabooks iyo aaladaha kale ee u baahan in ay ku shaqeeyaan wakhti dheer awood batari. 

Low Power DDR (LPDDR) markii hore wuxuu ahaa nooca DDR1 oo wax laga beddelay , laakiin wixii markaas ka dambeeyay aad iyo aad ayuu u kala duwanaa sida nooc-korka ah ee DDR -ka moobilka . Markaa ha u malayn LPDDR 3,4 iyo 5 inay yihiin noocyada mobilada ee magacyadooda desktop-ka. Taa beddelkeeda, waxay yihiin tignoolajiyada xusuusta xoogga leh ee waxtarka leh oo leh qaddar aad u badan oo DNA-da^(DNA) u gaar ah .

Arrimaha Daahsoon

Waxaa laga yaabaa inaad maqashay in DDR4 uu leeyahay daahitaan ka badan DDR3 . Taasi waa, waxay qaadanaysaa DDR4 waqti dheer si ay uga jawaabto codsiyada akhrinta iyo qoraalka iyo unugyada xusuusta. Tani waa run warqad, laakiin ma samaynayso farqi la dareemi karo nolosha dhabta ah. DDR4 aad buu u dheereeyaa marka loo eego dhinacyo kale oo ay wali ka sarreyso guud ahaan kuwii ka horreeyay. DDR 5 waxaa laga yaabaa inuu ku horumaro arrinta daahitaanka, laakiin xitaa haddii aysan dhicin, waxay sidoo kale ka fiicnaan doontaa DDR 4 guud ahaan.

Waa kuwee DDR-ka ugu Wanaagsan?

Su'aashani maaha mid toos ah in laga jawaabo, sababtoo ah waxay kuxirantahay booskaaga bilawga ah:

• Haddii aad iibsanayso ama dhisayso kombuyuutar cusub sida daabacaadda maqaalkan, markaa DDR4 ayaa ah jidka loo maro.
• Haddii aad leedahay kombuyuutar ku shaqeeya DDR3 , ka dib kaliya tixgeli inaad cusboonaysiiso haddii aad gaarto xadka CPU iyo GPU . DDR4 lafteedu maaha sabab ku filan oo loogu gudbi karo nidaam cusub.
• DDR5 waxa ay ahaan doontaa mid qaali ah oo si liidata loo taageero in muddo ah, marka waxa mudan in la sugo Motherboard-yada caadiga ah iyo soo-saareyaasha taageera ka hor inta aan la boodin markabka.

Markaa waxa jira arrin ku saabsan baaxadda xusuusta iyo awoodda. Inta badan isticmaalayaasha waxa u roon inay lahaadaan RAM ka gaabis ah marka loo eego ^(RAM)RAM ka dheereeya , sidii hore loo sheegay. Taas oo la yiraahdo, waa inaad heshaa xusuusta ugu dhaqsaha badan ee aad awoodid kartida aad u baahan tahay. Ku dhejinta RAM^(RAM) badan nidaamka aan u baahnayn waxba kama qabanayso waxqabadka. 

RAM -kaas dheeraadka ah ayaa sidaa darteed noqon doona mid aan la isticmaalin oo waxay noqon doontaa lacag lumis. Tusaale ahaan, nidaamyada ciyaaraha intooda badani waxay ku samayn doonaan 16GB ee RAM , markaa gelista 32GB waxay bixin doontaa soo celin yar. Xeeladda ugu fiican waa in la go'aamiyo wadarta guud ee RAM^{(total amount of RAM)} ugu fiican baahiyahaaga ka dibna aad hesho nooca ugu dhaqsaha badan ee cabbirka RAM ee aad awoodid.

DDR3 vs DDR4 vs DDR5 RAM: Which Is The Best?

Most people don’t spend a lot оf time thinking about RAM. It’s not as sexy as the CPU or GPU after all. For the most part, all anyone cares about is that there’s enough of it for their needs. However, the truth is that there’s much more to RAM than pure capacity.

Improvements in memory technology are a key part of why computer performance is so good. The fastest CPU in the world can only work at a snail’s pace if it’s being fed data by slow, obsolete RAM. At the time of writing, there are three types of RAM to contend with when building or buying a computer. 

There’s DDR3, which is well over a decade old but still present in plenty of computers in use today. Then there’s DDR4, which is the current standard for new computers. DDR5 isn’t yet to be found in a computer you can buy, but the standard was officially released in mid-2020.

Which means it won’t be long until actual DDR5 hardware starts to ship. So, what’s the difference between these generations of RAM and which one is best for you to choose today?

What Is DDR?

Before we dive into the generational differences between the different DDRs, it’s worth explaining what “DDR” is in the first place. It’s not Dance Dance Revolution, in case that’s where your mind immediately went. Not that we’d know anything about that!

No, DDR is short for Double Data Rate and refers to the special method that this memory technology uses to perform an operation at both the peak and the trough of its clock cycle. In other words, a DDR memory chip running at 100Mhz does the same number of operations as an SDR (Single Data Rate) chip running at 200Mhz.

This is why the DDR memory speeds are written at twice the actual clock speed of the module. For example, DDR3 1600 RAM actually runs at 800Mhz.

Bandwidth Differences

One of the key differences between the different generations of DDR is the amount of bandwidth they offer. Each successive generation has offered a significant jump in data transfer rates. Of course, you can buy high-end DDR3 that comes close to the lower end of DDR4 and the same will likely be true for DDR5. 

There’s bound to be some performance overlap at the edges of the product spectrum. However, unless you’re aiming to build a system for the lowest price, each new generation should be significantly faster than the last.

How much of a difference does increased bandwidth make? 

In general it’s better to have a higher amount of slower RAM than a smaller amount of fast RAM. However, in the age of NVME SSDs and CPUs with many cores, it’s becoming more important than ever.

Within the DDR generation that a given CPU supports, bandwidth differences are less important, but what does matter is making use of multi-channel memory. In other words, if your motherboard supports dual (or more) channel memory, make sure you have the right number of modules in the right slots to enable it.

Power Consumption

With every new generation of RAM, performance goes up and power consumption goes down. This is especially beneficial when considering mobile computers, but less power consumption with better performance is never a bad thing in any context. 

While RAM isn’t the most power-hungry component by far, combined with power savings in other components it all adds up to a big drop in energy needs for modern systems. 

The bottom line is that a DDR3 system is likely to be harder on your battery or electricity bill, because components designed to work with that generation of DDR will consume more power by virtue of their era.

Prefetch Buffer Sizes

The prefetch buffer is an area of RAM where data is loaded before being handed over to the CPU. The original DDR standard could fetch one unit of data, but DDR could do twice as much at a time. DDR3 and DDR4 can do an impressive eight units at once and DDR5 can go up to 16, depending on the specific model. 

The bigger the prefetch buffer is, the more efficient the RAM is. This is because there’s a larger chance that the buffer contains the data that the CPU needs next if it’s bigger. 

DDR3, DDR4 and some DDR5 modules all have a buffer size of eight units. So there’s nothing to separate them in terms of efficiency. DDR5 memory with a 16-unit buffer size represents a huge leap on paper, but it’s still not clear if it’s a noteworthy upgrade in real-world computing for most users.

Physical Differences

By deliberate design, different generations of DDR have different hardware form factors. They all come in the form of a DIMM (Dual Inline Memory Module), but the notches on the connector edge are in a different place.

This makes it impossible to slot memory into the wrong slot. That would be especially problematic since older DDR standards use so much more voltage than the newer technologies. Poof!

What’s LPDDR?

There’s a type of DDR you’ll find in ultrabooks and other devices that need to run for long periods of time from battery power. 

Low Power DDR (LPDDR) was initially a modified version of DDR1, but since then has diverged more and more as a ground-up type of mobile DDR. So don’t think of LPDDR 3,4 and 5 as mobile versions of their desktop namesakes. Instead, they are aggressively power-efficient memory technologies with a significant amount of their own unique DNA.

Latency Issues

You may have heard that DDR 4 has more latency than DDR3. That is, it takes DDR4 longer to respond to requests to read and write from and to its memory cells. This is true on paper, but makes no perceptible difference in real life. DDR4 is so much faster in other respects that it still outperforms its predecessor overall. DDR 5 may improve on the latency issue, but even if it doesn’t, it will also outperform DDR 4 as a whole.

Which DDR Is Best?

This question isn’t all that straightforward to answer, because it depends on your starting position:

• If you’re buying or building a new computer as of this article’s publication, then DDR4 is the way to go.
• If you have a computer running DDR3, then only consider upgrading if you reach the limits of your CPU and GPU. DDR4 by itself is not a good enough reason to move on to a new system.
• DDR5 will remain expensive and poorly-supported for some time, so it’s worth waiting for mainstream motherboards and processors that support it before jumping ship.

Then there’s the issue of memory bandwidth versus capacity. For most users it’s better to have more slower RAM than less faster RAM, as mentioned before. That being said, you should get the fastest memory you can afford for the capacity you need. Putting too much RAM in a system that doesn’t need it will do nothing for performance. 

That extra RAM will therefore go unused and be a waste of money. For example, most gaming systems will do with 16GB of RAM, so putting in 32GB will offer diminishing returns. The best strategy is to determine what total amount of RAM is best for your needs and then get the fastest version of that RAM size you can afford.

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