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Core i5-13400F vs Core i5-12400F: Gaming Performance & Bottleneck (2026)

With an RTX 5090 taking the graphics card out of the equation, the Core i5-13400F averages 126 FPS at 1080p High to the Core i5-12400F's 120, 5% more. The gap holds at 1440p (5%) because even there the CPU, not the RTX 5090, sets the frame rate. In esports games like CS2 it's 328 vs 312 FPS, and in CPU-heavy titles such as Microsoft Flight Simulator 69 vs 66 FPS at 1440p. 1% lows, which decide how smooth a game feels, come in at 88 vs 84 FPS. With a more typical RTX 5070 at 1440p they land at 99 and 98 FPS, effectively the same. Both use LGA1700, so moving from one to the other is a drop-in swap. The Core i5-13400F has more threads (16 vs 12), which helps streaming and productivity more than gaming. Both keep up with GPUs up to the RX 7900 XTX at 1440p.

Relative performance

Faster CPU = 100%. Average FPS at High settings with an RTX 5090.

AAA games, 1080p

Core i5-13400F100%
Core i5-12400F95%

126 vs 120 FPS · Core i5-13400F +5%

Esports, 1080p

Core i5-13400F100%
Core i5-12400F95%

328 vs 312 FPS · Core i5-13400F +5%

CPU-heavy games, 1440p

Core i5-13400F100%
Core i5-12400F95%

69 vs 66 FPS · Core i5-13400F +5%

FPS with an RTX 5090

Average FPS, no upscaling. The fastest GPU, so the processor sets the pace.

SettingCore i5-13400FCore i5-12400FLead
1080p High, AAA126120i5-13400F +5%
1440p High, AAA126120i5-13400F +5%
1080p esports328312i5-13400F +5%
1440p CPU-heavy6966i5-13400F +5%

Specifications

Gaming index: Ryzen 7 9800X3D = 100.

SpecCore i5-13400FCore i5-12400F
Cores / threads10 / 166 / 12
SocketLGA1700LGA1700
Released20232022
3D V-CacheNoNo
Gaming index6360

Which GPUs can it drive?

Strongest common GPU each CPU keeps under a 10% CPU bottleneck at 1440p High.

ProcessorStrongest GPUFPS
Core i5-13400FRX 7900 XTX118
Core i5-12400FRX 7900 XTX114

Which should you buy?

Buy the Core i5-13400F if you want the faster gaming CPU: it's 5% ahead at 1080p with a high-end card. The Core i5-12400F makes sense if it costs at least 5% less, or if you pair it with a mid-range GPU that hides the difference. Already own the Core i5-12400F? Going to the Core i5-13400F gains 5% at 1080p, which is too small to justify replacing it. It drops into the same motherboard.

Buy the Core i5-13400F if…

  • you play at high refresh rates: 5% more FPS at 1080p with a fast GPU.
  • you care about smoothness: 1% lows of 88 vs 84 FPS at 1080p.
  • you play strategy, sims or MMOs: 69 vs 66 FPS in CPU-heavy games.
  • you also stream, edit video or compile code: 10 cores / 16 threads vs 6 / 12.

Buy the Core i5-12400F if…

  • it costs at least 5% less, or you game at 1440p and above where the gap shrinks.
  • you pair it with a mid-range card: with an RTX 5070 at 1440p the two are level.

Check your build

These numbers use an RTX 5090 to isolate the processor. Your own graphics card, resolution and settings change the result, so run your exact parts through the calculator.

Check Core i5-13400F + RX 7900 XTX Check Core i5-12400F + RX 7900 XTX

Popular builds with these CPUs

Core i5-13400F + RTX 5070 Ti1440p · Balanced · ≈114 FPSCore i5-13400F + RTX 50701440p · GPU-limited 20% · ≈99 FPSCore i5-13400F + RX 9070 XT1440p · Balanced · ≈114 FPSCore i5-12400F + RTX 5070 Ti1440p · Balanced · ≈112 FPSCore i5-12400F + RTX 50701440p · GPU-limited 16% · ≈98 FPSCore i5-12400F + RX 9070 XT1440p · Balanced · ≈111 FPS

Core i5-13400F vs Core i5-12400F: quick answers

Is the Core i5-13400F better than the Core i5-12400F for gaming?

Yes. The Core i5-13400F is about 5% faster at 1080p with an RTX 5090 and 5% faster at 1440p. The gap is smaller with a mid-range graphics card, which becomes the limit first.

How many FPS do the Core i5-13400F and Core i5-12400F get?

Paired with an RTX 5090 at High settings, the Core i5-13400F averages about 126 FPS at 1080p and 126 at 1440p in AAA games, and 328 FPS in esports titles. The Core i5-12400F averages 120, 120 and 312 FPS.

Which graphics card should I pair with the Core i5-13400F or Core i5-12400F?

For a CPU bottleneck under 10% at 1440p, the Core i5-13400F keeps up with cards up to the RX 7900 XTX and the Core i5-12400F keeps up with cards up to the RX 7900 XTX. Any slower card is a safe match. At 4K both CPUs can drive faster GPUs, and at 1080p they need slower ones.