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NVIDIA GeForce RTX 4090 + AMD Ryzen 7 3800X

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

24GB
GPU VRAM
450W
GPU TDP
8C/16T
CPU Cores
AM4
Socket
🛒 Check NVIDIA GeForce RTX 4090 Price🛒 Check AMD Ryzen 7 3800X Price

Estimated FPS in Popular Games (1080p)

GameLowHighUltraGenre
Grand Theft Auto VI (GTA 6)17211985Open World
Cyberpunk 2077250173122Action Rpg
Counter-Strike 2 (CS2)671463332Fps Shooter
Valorant877605435Fps Shooter
Grand Theft Auto V (GTA 5)449311223Open World
Red Dead Redemption 2315219157Open World
Fortnite520359257Battle Royale
Call of Duty: Warzone361250178Battle Royale
Call of Duty: Black Ops 6359248177Fps Shooter
Apex Legends614424305Battle Royale
Minecraft (with Shaders)326226162Sandbox
League of Legends (LoL)950655470Moba
Dota 2586405291Moba
PUBG: Battlegrounds457316226Battle Royale
Overwatch 2734506364Fps Shooter
Rainbow Six Siege821566407Fps Shooter
Rust264183131Survival
Escape from Tarkov222153110Survival Fps
Hogwarts Legacy273188135Action Rpg
Elden Ring332230165Action Rpg
Baldur's Gate 3289200143Rpg
Starfield205142101Action Rpg
Helldivers 2292202145Co Op Shooter
Black Myth: Wukong246171123Action Rpg
Alan Wake 2221154109Survival Horror
Palworld315218155Survival
EA Sports FC 25526364262Sports
Forza Horizon 5406281200Racing
The Witcher 3 (Next-Gen)314217155Action Rpg
Marvel's Spider-Man 2274189135Action Adventure
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Upgrade Recommendations

Current: AMD Ryzen 7 3800X
⬆ AMD Ryzen 7 5700X3D
+82.7% performance gain
Your AMD Ryzen 7 3800X limits the NVIDIA GeForce RTX 4090 by ~60%. Upgrading to AMD Ryzen 7 5700X3D unlocks ~82.7% more CPU performance on the same socket.
View New ComboCheck Price on Amazon

Compatibility & Power

⚡Recommended PSU: 750W (80+ Bronze or better)
🔌CPU Socket: AM4 — verify your motherboard compatibility.
⚠️Upgrading to Ryzen 5000 series on B350/B450/X470 motherboards requires a BIOS update.
🎮VRAM: 24GB GDDR — check per-game requirements in the FPS table.
🔋GPU Power Draw: 450W — CPU: 105W

FAQ

Does the AMD Ryzen 7 3800X bottleneck the NVIDIA GeForce RTX 4090?

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

What PSU do I need?

A quality 750W 80+ Bronze PSU is recommended.

Can I upgrade the CPU without changing my motherboard?

Yes — as long as you stay on the AM4 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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