TEST: How to Overclock your graphics card

editor picture
Hardware udlånt af: .
Skrevet af Thomas N. F. Kvist den 22. Feb 2013. Testen er vist 3467 gange.
Flere tests i kategorien Grafikkort


Del med dine venner

     


A graphics card consists of a lot of components; one of the most important is the GPU. This is where all the advanced calculations are taking place. Basically, a GPU works the same way as a CPU. It gets some instructions it then handles. Their ways is separated pretty quickly though, because it is two very different kinds of instructions they have to handle. A GPU makes a lot of geometric calculations, because the graphics on your screen consists of billions of tiny triangles. Or, that is how it is in games and 3D. In 2D, the graphics card works in almost the same way as a TV. A signal is sent to the monitor, where the processor of the graphics card creates a picture, and that is a very simple picture. But in the same second as you put some advanced 3D graphics on the monitor, things happen. Instead of creating a very simple picture, the GPU now has to create a lot of triangles.

 

 

Just as a CPU, a GPU runs at a certain speed. Where a modern 4-cored CPU runs at 3.5 GHz, a 1.536-cored GPU only runs at 950 MHz, but that is for every single core. 950 multiplied with 1.536 gives a totally insane number. A graphics card’s speed is measured in the unit “FLOPS”. FLOP is short for: “Floating Points Operations Per Second”, and indicates how many calculations a given graphics card can totally handle per second. Modern graphics cards have a total processing power of up to 3-4 teraflops. That is very, very much, and counts dual-GPU graphics cards, which is a melt of two graphics cards to one, only.

 

A 3D game works the way that everything is built up from triangles, and it is the graphics cards task to change the triangle’s shape and colour, and change the colours the triangle contains. This task is so demanding that you won’t believe it. That is one of the reasons, why a modern GPU consists of more than 1.500 cores. There is a lot of processing power required. That is one of the reasons why a CPU fails when it has to create 3D. A modern CPU has 4-8 cores only, which obviously isn’t enough. The more cores a graphics card has, the better graphics it creates.

 

Something else that plays a role is of course the resolution. If I take the resolution 1920 * 1080 it gives me 2.073.600 pixels or circa 2 megapixels. 2 megapixels does not sound like a lot, but really, really many triangles have to be made before it makes sense. If I then take a resolution of 2560 * 1440 it gives 3.686.400 pixels or almost 4 megapixels. That is 77 % more pixels than 1920 * 1080, which results in a much heavier task for the GPU. I will not talk about ROPs etc. here, as it quickly becomes nonsense. 


<< Previous Next >>



0 Kommentarer
Skriv kommentar til testen Kommentarer til testen fra Facebook

 

LucidSound LS30

Vi har endnu engang LucidSound på testbænken, denne gang med deres lidt større model, LS30. LS30 er et

Læs Mere

Gamer mus X2 HARADA

Vi skal i denne test kigge nærmere på en producent som jeg personligt mener får for lidt opmærksom

Læs Mere

ASUS bundkort - ROG Strix Z270E og Z270F Gaming

Endnu engang tager vi fat i ASUS her på Tweak.dk redaktionen, når vi her i dag sk

Læs Mere

Blue & NiP Gaming Headset PC - Pro Gamer bundle

Blue har længe været kendt for deres mikrofoner, Snowball og Yeti der ikke koster en formue at komme i gang me

Læs Mere

Corsair musemåtte - Gaming MM300 Extended

Er din gamle musemåtte ved at være slidt, eller mangler du bare en ny en af slagsen? Så kunne dagens tes

Læs Mere

EVGA GTX1060 SC Gaming

Er jagten gået ind på at finde et nyt grafikkort, og er kravet et grafikkort, som skal passe ind, hvor de fysi

Læs Mere

MSI bundkort - Z270 Pro Gaming Carbon

Z270 strømmen vokser og vokser bare, og MSI har haft deres Z270 Pro Gaming Carbon en t

Læs Mere

Rosewill strømforsyning - TOKAMAK 1200 Watt

Selvom vores hardware er begyndt at blive mere og mere effektivt hvad angår strømforbruget, er der stadig fol

Læs Mere

 

Nyeste Videoer og Trailers

Seneste nyheder

Futurama får sit eget mobilspil

Futurama har haft massiv succes som tegnefilms-serie. Nu prøver man at gå ny veje ved at se, om det er muligt
Læs Mere

Nye informationer om Nokia 3310 lækket

Et ikon er på vej tilbage på markedet, og vi taler naturligvis om Nokia 3310, som lader til at få sin genfødse
Læs Mere

Sony præsenterer verdens hurtigste SD kort

Sony vil satse stort på speed med deres ny SD kort. Faktisk så meget, at de har formået at lave verdens hurtig
Læs Mere

Instagram vil lade dig poste 10 billeder og videoer på samme tid

Du vil kunne swipe mellem dem som ’slidehows’. Dette er Instagrams nyeste forsøg på at få folk til at poste fl
Læs Mere

HTC vi have dig tilbage - men er det for sent?

HTC’s nye strategi vil satse på kvalitet fremfor kvantitet, men nogle vil sige at det allerede er for sent for
Læs Mere

Tweak.dk interview med eSport veteran Carsten Petersen

Tweak.dk har fået æren af at lave et interview med eSports veteranen Carsten Petersen
Læs Mere

Ny display-teknologi på vej til Apple Watch Series 3

Apple arbejder på at udgive en tredje serie af det populære Apple Watch. Som noget nyt kan man angiveligt forv
Læs Mere

Leaked: Samsung Galaxy Tab S3

Alle tripper for at blive præsenteret for Samsungs Galaxy S8-smartphone. Alt imens er den sydkoreanske virksom
Læs Mere
Indsend nyhed
Har du fundet en fed nyhed så indsend den så alle andre på Tweak.dk kan få glæde af den.