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NVIDIA GeForce RTX 4080 Super + Intel Core i5-8400

Bottleneck Analysis & Gaming FPS Estimates

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Severe CPU Bottleneck

Significant bottleneck (~60%). Upgrading the CPU is strongly recommended.

Bottleneck at a Glance

60%
1080p Bottleneck
CPU
60%
1440p Bottleneck
CPU
60%
4K Bottleneck
CPU

Component Specs

16GB
GPU VRAM
320W
GPU TDP
6C/6T
CPU Cores
LGA1151
Socket
🛒 Check NVIDIA GeForce RTX 4080 Super Price🛒 Check Intel Core i5-8400 Price

Estimated FPS in Popular Games (1080p)

GameLowHighUltraGenre
Grand Theft Auto VI (GTA 6)1298963Open World
Cyberpunk 207718913192Action Rpg
Counter-Strike 2 (CS2)493340243Fps Shooter
Valorant632435313Fps Shooter
Grand Theft Auto V (GTA 5)336233167Open World
Red Dead Redemption 2240166120Open World
Fortnite387267191Battle Royale
Call of Duty: Warzone269186133Battle Royale
Call of Duty: Black Ops 6269186132Fps Shooter
Apex Legends462320230Battle Royale
Minecraft (with Shaders)241167120Sandbox
League of Legends (LoL)684472339Moba
Dota 2430297213Moba
PUBG: Battlegrounds340235168Battle Royale
Overwatch 2550379272Fps Shooter
Rainbow Six Siege611421303Fps Shooter
Rust19413496Survival
Escape from Tarkov16111180Survival Fps
Hogwarts Legacy206142102Action Rpg
Elden Ring250173124Action Rpg
Baldur's Gate 3215149107Rpg
Starfield15310775Action Rpg
Helldivers 2219151108Co Op Shooter
Black Myth: Wukong18713093Action Rpg
Alan Wake 216811783Survival Horror
Palworld237164117Survival
EA Sports FC 25396274197Sports
Forza Horizon 5309213152Racing
The Witcher 3 (Next-Gen)237164117Action Rpg
Marvel's Spider-Man 2206142102Action Adventure
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Upgrade Recommendations

Current: Intel Core i5-8400
⬆ Intel Core i7-9700K
+49.0% performance gain
Your Intel Core i5-8400 limits the NVIDIA GeForce RTX 4080 Super by ~60%. Upgrading to Intel Core i7-9700K unlocks ~49.0% more CPU performance on the same socket.
View New ComboCheck Price on Amazon

Compatibility & Power

⚡Recommended PSU: 550W (80+ Bronze or better)
🔌CPU Socket: LGA1151 — verify your motherboard compatibility.
⚠️9th Gen Intel CPUs on 300-series motherboards may require a BIOS update.
🎮VRAM: 16GB GDDR — check per-game requirements in the FPS table.
🔋GPU Power Draw: 320W — CPU: 65W

FAQ

Does the Intel Core i5-8400 bottleneck the NVIDIA GeForce RTX 4080 Super?

At 1080p, the estimated bottleneck is 60% (CPU).

What PSU do I need?

A quality 550W 80+ Bronze PSU is recommended.

Can I upgrade the CPU without changing my motherboard?

Yes — as long as you stay on the LGA1151 socket.

Compare Other Pairings

NVIDIA GeForce GTX 1050 TiNVIDIA GeForce GTX 1060 6GBNVIDIA GeForce GTX 1070NVIDIA GeForce GTX 1070 TiNVIDIA GeForce GTX 1080NVIDIA GeForce GTX 1080 Ti
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