Guide
RTX 4070 vs RTX 3070 — Which to choose in 2026?
The RTX 4070 ($425 – $475) and the RTX 3070 ($225 – $275 (occasion)) are two of the most popular GPUs in their price range. This comparison covers 1080p and 1440p performance, power draw, price, and helps you decide which card fits your build best.
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RTX 4070 or RTX 3070: quick summary
The RTX 4070 delivers better overall performance in our benchmarks. The RTX 3070 stays competitive, especially as a value option on the used market.
At 1080p: the RTX 4070 has more headroom in demanding titles. At 1440p: the gap widens — the RTX 4070 is more comfortable targeting 60+ FPS at high/ultra settings.
Power draw and PSU compatibility
The RTX 4070 has a TDP of 200W; the RTX 3070 draws 220W. The RTX 4070 is more power-efficient — a notable advantage for small cases or PSUs under 650W.
Price and value in 2026
In 2026, the RTX 4070 sells for around $425 – $475 and the RTX 3070 for $225 – $275 (occasion). The RTX 4070 justifies its premium with higher performance, particularly at 1440p.
Frequently asked questions
Quelle carte est plus rapide : RTX 4070 ou RTX 3070 ?
En raster pur, la RTX 4070 devance d'environ 8–12 % en 1080p (Cyberpunk : ~106 vs ~97 FPS) et ~10–15 % en 1440p. Avec DLSS 3 Frame Generation, l'écart perçu peut être plus large sur la 4070.
Vaut-il le coup de passer de RTX 3070 à RTX 4070 en 2026 ?
Oui si tu vises le 1440p, le stream NVENC ou les 12 Go VRAM. Non si tu es satisfait en 1080p 144 Hz — l'upgrade raster seul ne justifie pas ~150–180 €.
RTX 4070 ou RTX 3070 pour du 1440p ?
La RTX 4070 est le choix confortable en 1440p high/ultra. La 3070 reste jouable avec DLSS Quality, mais les 8 Go limitent plus vite sur les AAA 2025–2026.
12 Go vs 8 Go VRAM : est-ce décisif ?
En 1440p ultra et jeux texture-heavy (Hogwarts Legacy, TLOU Part I), oui — la 4070 a plus de marge. En 1080p high, la 3070 suffit encore pour la majorité du catalogue.
Quelle alimentation pour RTX 4070 et RTX 3070 ?
Un 550–650 W 80+ Bronze/Gold avec Ryzen 5 / Core i5 convient aux deux. La 4070 consomme ~200 W, la 3070 ~220 W — aucune n'exige un bloc 850 W.
Quels prix en France en juillet 2026 ?
RTX 4070 380–440 € neuve (LDLC, TopAchat, Amazon). RTX 3070 220–260 € occasion contrôlée sur Leboncoin. Au-delà de ~280 € occasion, compare une 4070 neuve.
La RTX 3070 est-elle encore une bonne carte en 2026 ?
Oui pour 1080p et e-sport à bon prix d'occasion. Pour un achat neuf en 2026, la 4070 (ou une RX 7800 XT) offre plus de marge long terme — surtout en 1440p.
DLSS 3 change-t-il la donne face à une 3070 ?
Souvent oui sur les jeux compatibles (Cyberpunk, Hogwarts Legacy, Fortnite) : seule la 4070 propose Frame Generation. La 3070 reste limitée au DLSS 2 classique.
Sources & methodology
How we wrote this guide
Comparatif PC4Games RTX 4070 vs RTX 3070 — mise à jour juillet 2026. FPS raster indicatifs sans Frame Generation ; prix observés sur le marché français.
- Benchmarks 1080p/1440p High–Ultra, CPU milieu de gamme, ReBAR activé.
- Prix : LDLC, TopAchat, Amazon (neuf) ; Leboncoin (occasion médiane 7 j).
- Prochaine révision si écart prix > 10 % ou nouvelle fourchette RTX 50.
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