[COMPONENTELE CALCULATORULUI]Placa video(GPU)

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Este responsabila cu afisarea imaginilor pe ecranul monitorului. Ea este a doua componenta, dupa procesor, care determina puterea unui calculator si de aceea si in cazul ei este recomandat sa nu facem economie atunci cind dorim sa o cumparam. Daca nu dispunem de resurse financiare foarte mari este mai degraba recomandat sa avem un calculator cu un procesor puternic si o PV cu performante medii decat sa avem un procesor cu performante medii si o PV puternica.
PV contine un procesor specializat numit GPU (Graphical Processing Unit) sau VPU (Video Processing Unit) care face o parte din calculele necesare pentru afisarea imaginilor, cealalta parte a acestor calcule fiind facuta de procesorul calculatorului (CPU). Fiecare PV are si o cantitate de memorie inclusa pe ea care este folosita de GPU (de exemplu pentru a stoca texturile suprafetelor intilnite in jocuri).
Placa Video se fixeaza pe placa de baza intr-un slot alungit numit slot. Acesta poate fi de tip AGP (cel mai frecvent) sau PCI (foarte putine PV il folosesc in prezent). Modul de transfer a datelor video prin portul AGP este de 1X, 2X, 4X sau 8X dar asta nu inseamna ca un mod de transfer de 8X este de doua ori mai bun decit de cel 4X, ele avind performante apropiate, evident cu un plus de performanta pentru 8X.
Placile Video sunt construite de multe companii specializate in producerea de piese pentru calculator insa in fapt cea mai mare parte dintre aceste PV au un procesor grafic (GPU-VPU) fabricat fie de NVIDIA, fie de AMD.

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Poze placa video :
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