Core i9-13900K Bottleneck Calculator

The Intel Core i9-13900K is a 24-core, 32-thread Raptor Lake processor for socket LGA1700, launched in 2022. Use this page as a bottleneck detector for the Core i9-13900K: pick any graphics card and you get the bottleneck direction and percentage at 1080p, 1440p and 4K, estimated FPS in 14 games, and the best-value GPU matches. This page also covers the Core i9-13900KF, Core i9-13900KS, which perform the same in games.

Check the Core i9-13900K with your graphics card

Data version 2026.09 · methodology

Processor (CPU)

Graphics card (GPU)

Memory (RAM)

Resolution

More options: game and monitor refresh rate

Game or workload

Monitor refresh rate

Estimates for the selected game and resolution with the settings noted on the methodology page. Real results vary by map, drivers and settings.

Core i9-13900K specs that matter for bottlenecks

Cores / threads	24 / 32
Boost clock	5.8 GHz
L3 cache	36 MB
Socket · memory	LGA1700 · DDR4 or DDR5
TDP	125 W
Launched	2022
PCPartGuide gaming index	82 (100 = Ryzen 7 9800X3D)
Typical price	$400–600 class

For gaming, single-thread speed, cache and memory bandwidth decide the Core i9-13900K's frame ceiling far more than its core count.

Which GPUs bottleneck the Core i9-13900K?

Typical modern AAA game, high settings, no upscaling, with a matching dual-channel RAM kit. A CPU percentage means the processor limits the pair; a GPU percentage means the graphics card does (the normal state). Rows with a link have a full page; the others run in the calculator above.

Graphics card	1080p	1440p	4K	fps 1440p
RTX 5090	39% CPU	balanced	43% GPU	205
RTX 4090	33% CPU	balanced	53% GPU	191
RTX 5080	24% CPU	22% GPU	62% GPU	164
	19% CPU	27% GPU	65% GPU	153
	18% CPU	29% GPU	66% GPU	151
	18% CPU	29% GPU	66% GPU	151
RTX 5070 Ti	18% CPU	30% GPU	67% GPU	149
	15% CPU	33% GPU	69% GPU	142
	11% CPU	35% GPU	69% GPU	138
	11% CPU	36% GPU	70% GPU	135
	balanced	37% GPU	70% GPU	133
	balanced	39% GPU	73% GPU	129
	balanced	39% GPU	71% GPU	129
	balanced	40% GPU	73% GPU	127
	balanced	40% GPU	73% GPU	127
	balanced	40% GPU	72% GPU	127
	balanced	41% GPU	73% GPU	124
	balanced	42% GPU	74% GPU	122
	balanced	43% GPU	74% GPU	120
	balanced	44% GPU	74% GPU	118
	balanced	45% GPU	75% GPU	115
	balanced	46% GPU	76% GPU	113
	balanced	48% GPU	77% GPU	109
	balanced	48% GPU	77% GPU	109
	14% GPU	53% GPU	80% GPU	100
	16% GPU	53% GPU	79% GPU	100
	16% GPU	53% GPU	78% GPU	100
	19% GPU	55% GPU	81% GPU	95
	21% GPU	56% GPU	81% GPU	93
	23% GPU	58% GPU	82% GPU	89
	24% GPU	58% GPU	81% GPU	89
	24% GPU	59% GPU	83% GPU	87
	26% GPU	59% GPU	82% GPU	87
	26% GPU	60% GPU	84% GPU	84
	27% GPU	60% GPU	83% GPU	84
	29% GPU	61% GPU	84% GPU	82
	32% GPU	63% GPU	84% GPU	78
	32% GPU	63% GPU	85% GPU	78
	34% GPU	65% GPU	86% GPU	73
	34% GPU	65% GPU	86% GPU	73
	36% GPU	65% GPU	85% GPU	73
	37% GPU	67% GPU	87% GPU	69
	39% GPU	67% GPU	86% GPU	69
	41% GPU	67% GPU	86% GPU	69
	41% GPU	70% GPU	88% GPU	64
	42% GPU	70% GPU	87% GPU	64
	42% GPU	70% GPU	87% GPU	64
	42% GPU	70% GPU	87% GPU	64
	44% GPU	71% GPU	87% GPU	62
	44% GPU	71% GPU	87% GPU	62
	44% GPU	71% GPU	89% GPU	62
	47% GPU	72% GPU	88% GPU	60
	47% GPU	72% GPU	88% GPU	60
	49% GPU	73% GPU	89% GPU	58
	51% GPU	74% GPU	90% GPU	56
	52% GPU	75% GPU	90% GPU	53
	54% GPU	76% GPU	90% GPU	51
	54% GPU	76% GPU	90% GPU	51
	56% GPU	77% GPU	90% GPU	49
	56% GPU	77% GPU	91% GPU	49
	57% GPU	78% GPU	91% GPU	47
	57% GPU	78% GPU	91% GPU	47
	60% GPU	80% GPU	93% GPU	42
	62% GPU	80% GPU	92% GPU	42
	64% GPU	82% GPU	93% GPU	38
	69% GPU	84% GPU	94% GPU	33
	69% GPU	84% GPU	94% GPU	33
	72% GPU	86% GPU	95% GPU	29
	72% GPU	86% GPU	95% GPU	29
	74% GPU	87% GPU	95% GPU	27
	75% GPU	87% GPU	95% GPU	27
	77% GPU	88% GPU	96% GPU	24
	80% GPU	91% GPU	97% GPU	20
	79% GPU	91% GPU	97% GPU	20
	84% GPU	92% GPU	97% GPU	18
	88% GPU	95% GPU	98% GPU	11

Best GPUs for the Core i9-13900K by resolution

Resolution	Budget (under $300)	Mid-range ($300–600)	High-end ($600+)
1080p	RTX 5060 ~157 fps · 26% GPU	RTX 3080 ~205 fps · balanced	RX 9070 XT ~205 fps · 15% CPU
1440p	no balanced option	RX 9070 ~127 fps · 40% GPU	RTX 5090 ~205 fps · balanced
4K	no balanced option	no balanced option	RTX 5090 ~120 fps · 43% GPU

Balanced at 1440p: RTX 5090, RTX 4090. Picks favour the most frames per dollar inside each price class; prices are typical street prices, not live quotes.

See Core i9-13900K pricesAffiliate link: if you buy through it we may earn a commission at no extra cost to you.

Estimated FPS with the Core i9-13900K and a RX 9070

Game	1080p	1440p	4K	Limiter at 1080p
Fortnite (Performance mode)	344	344	173	CPU
Valorant	492	492	312	CPU
Counter-Strike 2	410	369	168	CPU
Apex Legends	262	211	96	game cap
Call of Duty: Warzone	213	137	62	CPU
Marvel Rivals	164	95	43	GPU
Rainbow Six Siege	451	401	182	CPU
Minecraft (Java)	574	574	336	CPU
Roblox	240	240	240	game cap
GTA V	230	180	82	CPU
Rust	180	105	48	balanced
Cyberpunk 2077	164	95	43	GPU
Helldivers 2	164	95	43	GPU
Elden Ring	60	60	58	game cap

High settings, no upscaling, dual-channel RAM. Competitive titles are shown at their usual reduced settings. Estimates, not benchmarks: see the methodology.

RAM for the Core i9-13900K

The Core i9-13900K uses DDR4 or DDR5. On a DDR5 board, 32GB (2×16GB) DDR5-6000+; on a DDR4 board, 2×16GB DDR4-3600 CL16 is the value pick. Run two sticks: single-channel memory costs this chip a meaningful share of its gaming performance.

Signs the Core i9-13900K is your bottleneck

With 24 cores and 32 threads, core count is not the problem; when the Core i9-13900K limits a game it is single-thread speed and cache that matter.

In an overlay, a Core i9-13900K bottleneck looks like GPU usage dropping below about 90% while one or two CPU threads stay pinned, especially in crowded scenes and at 1080p.

How to confirm it on your own PC: reading CPU and GPU usage correctly. Fixes: how to fix a CPU bottleneck.

Upgrade paths from the Core i9-13900K

The Core i9-13900K is already at the top of its socket; a faster processor means a new platform (motherboard and RAM).

Deciding between a processor and a graphics card? Read upgrade CPU or GPU first.

Core i9-13900K bottleneck FAQ

Does the Core i9-13900K bottleneck the RTX 5090?

At 1080p the Core i9-13900K holds the RTX 5090 back by roughly 39%. You are paying for graphics performance you cannot use at this resolution; raising settings or resolution is free performance here. At 1440p the Core i9-13900K and RTX 5090 are evenly matched: neither part is waiting on the other for long, and you get about 205 fps in a typical modern AAA game.

What is the best GPU for the Core i9-13900K at 1440p?

In our model the RX 9070 is the best-value match at 1440p ($400–600 class): At 1440p the RX 9070 is clearly the limiter (40% GPU-bound). That is fine as long as 127 fps meets your target; if not, the graphics card is the part to upgrade. Other balanced options at 1440p include the RTX 5090, RTX 4090.

Is the Core i9-13900K still good for gaming in 2026?

Yes. The Core i9-13900K is a current high-end part: it keeps up with any graphics card at 1440p and 4K, and only the very fastest cards at 1080p can expose it.

Will faster RAM help the Core i9-13900K?

What should I upgrade to from the Core i9-13900K?

The Core i9-13900K is already at the top of its socket; a faster processor means a new platform (motherboard and RAM).

Popular Core i9-13900K pairings

Core i9-13900K + RTX 50901440p: balanced · ~205 fps Core i9-13900K + RTX 40901440p: balanced · ~191 fps Core i9-13900K + RTX 50801440p: 22% GPU-bound · ~164 fps Core i9-13900K + RTX 5070 Ti1440p: 30% GPU-bound · ~149 fps

Try the calculator with your exact parts

RAM kit, resolution, game and refresh rate all change the answer.

Open the bottleneck calculator