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 3758 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

 

Netgear Nighthawk X10

Netgear sparker døren ind med den nye 802.11ad Wi-Fi standard, der på papiret giver mulighed for hastigheder

Læs Mere

Blue Ella med indbygget hi-fi forstærker

Dagens test er en vi har set frem til at præsentere for Jer længe. I dag har vi fået lov til at se p&ari

Læs Mere

Corsair GLAIVE RGB Gaming Mus

Når du spiller computer er komforten mindst lige så vigtigt, som et præcist aim i FPS spil. Gutterne hos

Læs Mere

Cooler Master MasterPulse PRO

Der er efterhånden ikke den produkt gruppe hvor Cooler Master ikke har produkter at tilbyde. I denne test dykker vi

Læs Mere

MSI GS73 7RF Stealth Pro

For kort tid siden testede Tweak.dk MSI GT83VR Titan SLI, som inden for det mobile område, er et monster af en

Læs Mere

GUNNAR RPG designed by Razer gaming EyeWear

Det er igen blevet tid til at se på et par gamerbriller fra GUNNAR. I dag skal vi se på en gamingbrille som GU

Læs Mere

Yakuza 0 til PlayStation 4

Titlen er Yakuza 0, og det er Segas seneste spil i Yakuza serien. Faktisk er Yakuza 0 en prequel til de tidligere Yakuza s

Læs Mere

Gaming headset: Hvilket gamer headset skal man vælge

Syntes du også at headset junglen kan være svær at overskue til tider? I denne test, eller rettere round

Læs Mere

 

Nyeste Videoer og Trailers

Seneste nyheder

Asus ROG video teaser for ny Ryzen baseret laptop

Producenterne gør alt for at tiltrække brugernes opmærksomhed forud for Computex 2017, og nu er turen kommet t
Læs Mere

Misfits sælger akademi-hold til Mysterious Monkeys

Misfits har valgt at stoppe akademi-arbejdet, når det kommer til League of Legends. Organisationens akademi-ho
Læs Mere

Her er udgivelsesdatoen for PES 2018

PES-fansene kan godt begynde at glæde sig til efteråret. Her udgiver Konami nemlig det nye PES 2018.
Læs Mere

Lenovo skyder to nye laptops afsted

Lenovo har ikke i sinde at falde bagud på laptop-markedet. Det har virksomheden nu fået slået godt og grundigt
Læs Mere

Los Angeles får lokalt eSports-hold

Et nyt eSports-hold er blevet stablet på benene. De kommer til at have hjemmebane i TCL Chinese Theatre i Los
Læs Mere

Virtus Pro rykket ud af ESL Pro League

Virtus Pro må igen en tur ned i Premier League. Det sker oven på en miserabel sæson, hvor man aldrig rigtig ko
Læs Mere

Immortals skriver med tidligere ROX Tigers-træner

Immortals har valgt at ansætte Sang-soo "Ssong" Kim som ny cheftræner. Han tager over for Robert Yip.
Læs Mere

Shuttle XC60J Fanless Apollo Lake SoC Mini PC fremvist

Er pladsen trang, når det kommer til placeringen af dit nye multimediecenter, så har Shuttle måske den rette l
Læs Mere
Partner sider
Indsend nyhed
Har du fundet en fed nyhed så indsend den så alle andre på Tweak.dk kan få glæde af den.