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NVIDIA GeForce RTX 5090 + 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

32GB
GPU VRAM
575W
GPU TDP
6C/6T
CPU Cores
LGA1151
Socket
🛒 Check NVIDIA GeForce RTX 5090 Price🛒 Check Intel Core i5-8400 Price

Estimated FPS in Popular Games (1080p)

GameLowHighUltraGenre
Grand Theft Auto VI (GTA 6)19913898Open World
Cyberpunk 2077295205144Action Rpg
Counter-Strike 2 (CS2)735507363Fps Shooter
Valorant915631454Fps Shooter
Grand Theft Auto V (GTA 5)517358257Open World
Red Dead Redemption 2377262188Open World
Fortnite591408292Battle Royale
Call of Duty: Warzone410284202Battle Royale
Call of Duty: Black Ops 6414286204Fps Shooter
Apex Legends717496357Battle Royale
Minecraft (with Shaders)364252181Sandbox
League of Legends (LoL)990683490Moba
Dota 2642444319Moba
PUBG: Battlegrounds519358257Battle Royale
Overwatch 2847584419Fps Shooter
Rainbow Six Siege933643462Fps Shooter
Rust289200143Survival
Escape from Tarkov237164117Survival Fps
Hogwarts Legacy322223159Action Rpg
Elden Ring388269192Action Rpg
Baldur's Gate 3329227163Rpg
Starfield236164116Action Rpg
Helldivers 2337233167Co Op Shooter
Black Myth: Wukong294204147Action Rpg
Alan Wake 2266185131Survival Horror
Palworld368255181Survival
EA Sports FC 25615425306Sports
Forza Horizon 5486335239Racing
The Witcher 3 (Next-Gen)371256184Action Rpg
Marvel's Spider-Man 2320221158Action 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 5090 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: 800W (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: 32GB GDDR — check per-game requirements in the FPS table.
🔋GPU Power Draw: 575W — CPU: 65W

FAQ

Does the Intel Core i5-8400 bottleneck the NVIDIA GeForce RTX 5090?

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

What PSU do I need?

A quality 800W 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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