PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Core i9-11900KF

2021

Why buy it

✅Better for gaming: +21.8% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Smaller total L3 cache (16 MB vs 32 MB).
❌Lower PassMark per dollar, at 47.9 vs 73.1 PassMark/$ ($513 MSRP vs $299 MSRP).
❌92.3% higher power demand at 125W vs 65W.

Ryzen 5 5600X

2020

Why buy it

✅+100% larger total L3 cache (32 MB vs 16 MB).
✅Costs $214 less on MSRP ($299 MSRP vs $513 MSRP).
✅Delivers 52.5% more PassMark for each dollar spent, at 73.1 vs 47.9 PassMark/$ ($299 MSRP vs $513 MSRP).
✅Draws 65W instead of 125W, a 60W reduction.
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-11900KF across 50 shared CPU benchmark tests.
❌Lower PassMark (21,845 vs 24,585).

Core i9-11900KF

2021

Ryzen 5 5600X

2020

Why buy it

✅Better for gaming: +21.8% higher average FPS across 50 shared CPU benchmark tests.

Why buy it

✅+100% larger total L3 cache (32 MB vs 16 MB).
✅Costs $214 less on MSRP ($299 MSRP vs $513 MSRP).
✅Delivers 52.5% more PassMark for each dollar spent, at 73.1 vs 47.9 PassMark/$ ($299 MSRP vs $513 MSRP).
✅Draws 65W instead of 125W, a 60W reduction.
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Smaller total L3 cache (16 MB vs 32 MB).
❌Lower PassMark per dollar, at 47.9 vs 73.1 PassMark/$ ($513 MSRP vs $299 MSRP).
❌92.3% higher power demand at 125W vs 65W.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-11900KF across 50 shared CPU benchmark tests.
❌Lower PassMark (21,845 vs 24,585).

Quick Answers

So, is Core i9-11900KF better than Ryzen 5 5600X?

Yes. Core i9-11900KF is the better overall CPU here. You are getting a 21.8% average FPS lead across 50 shared CPU game tests in our data, 12.5% better PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Core i9-11900KF is the better pick here. According to our tests, it delivers 21.8% more average FPS across 50 shared CPU game tests.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Core i9-11900KF is the better fit. You are getting 12.5% better PassMark, backed by 8 cores and 16 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Core i9-11900KF is still the faster CPU overall, but Ryzen 5 5600X makes more sense if price matters more than absolute performance. Core i9-11900KF is 71.6% more expensive on MSRP at $513 MSRP versus $299 MSRP, and it gives you a 21.8% average FPS lead across 50 shared CPU game tests in our data. Ryzen 5 5600X is also 52.5% better value on MSRP (73.1 vs 47.9 PassMark/$), which is why it is easier to justify for price-conscious builds on paper. That said, if you already own a compatible AM4 + DDR4 setup, Ryzen 5 5600X can still make sense as a platform-matched option because it avoids a motherboard and RAM swap.

Which one is more future-proof for 2026 and beyond?

Core i9-11900KF is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2020) and more multi-core headroom with 8 cores / 16 threads instead of 6/12. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Core i9-11900KF Benchmark Check

Ryzen 5 5600X Benchmark Check

Path of Exile 2

Preset	Core i9-11900KF	Ryzen 5 5600X
1080p
low	295 FPS	203 FPS
medium	261 FPS	174 FPS
high	220 FPS	140 FPS
ultra	189 FPS	107 FPS
1440p
low	242 FPS	169 FPS
medium	192 FPS	141 FPS
high	157 FPS	113 FPS
ultra	139 FPS	86 FPS
4K
low	167 FPS	85 FPS
medium	135 FPS	76 FPS
high	104 FPS	60 FPS
ultra	91 FPS	47 FPS

Open Core i9-11900KF Open Ryzen 5 5600X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i9-11900KF	Ryzen 5 5600X
1080p
low	615 FPS	464 FPS
medium	527 FPS	387 FPS
high	457 FPS	324 FPS
ultra	407 FPS	291 FPS
1440p
low	601 FPS	397 FPS
medium	490 FPS	334 FPS
high	422 FPS	290 FPS
ultra	362 FPS	253 FPS
4K
low	401 FPS	263 FPS
medium	339 FPS	226 FPS
high	320 FPS	205 FPS
ultra	275 FPS	171 FPS

Open Core i9-11900KF Open Ryzen 5 5600X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i9-11900KF	Ryzen 5 5600X
1080p
low	615 FPS	546 FPS
medium	615 FPS	473 FPS
high	615 FPS	432 FPS
ultra	563 FPS	358 FPS
1440p
low	615 FPS	508 FPS
medium	615 FPS	413 FPS
high	543 FPS	375 FPS
ultra	464 FPS	312 FPS
4K
low	577 FPS	348 FPS
medium	480 FPS	292 FPS
high	427 FPS	255 FPS
ultra	357 FPS	199 FPS

Open Core i9-11900KF Open Ryzen 5 5600X

League of Legends

League of Legends

Valorant

Preset	Core i9-11900KF	Ryzen 5 5600X
1080p
low	615 FPS	546 FPS
medium	615 FPS	546 FPS
high	615 FPS	546 FPS
ultra	615 FPS	546 FPS
1440p
low	615 FPS	546 FPS
medium	615 FPS	546 FPS
high	615 FPS	546 FPS
ultra	615 FPS	524 FPS
4K
low	615 FPS	529 FPS
medium	565 FPS	484 FPS
high	512 FPS	435 FPS
ultra	437 FPS	379 FPS

Open Core i9-11900KF Open Ryzen 5 5600X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i9-11900KF and Ryzen 5 5600X

Core i9-11900KF

The Core i9-11900KF is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Rocket Lake (2021) architecture. It features 8 cores and 16 threads. Base frequency is 3.5 GHz, with boost up to 5.2 GHz. L3 cache: 16 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 125 Watt. Memory support: DDR4-3200. Passmark benchmark score: 24,585 points. Launch price was $299.

Ryzen 5 5600X

The Ryzen 5 5600X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 6 cores and 12 threads. Base frequency is 3.7 GHz, with boost up to 4.6 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 21,845 points. Launch price was $299.

⚡

Processing Power

The Core i9-11900KF packs 8 cores / 16 threads, while the Ryzen 5 5600X offers 6 cores / 12 threads — the Core i9-11900KF has 2 more cores. Boost clocks reach 5.2 GHz on the Core i9-11900KF versus 4.6 GHz on the Ryzen 5 5600X — a 12.2% clock advantage for the Core i9-11900KF (base: 3.5 GHz vs 3.7 GHz). The Core i9-11900KF uses the Rocket Lake (2021) architecture (14 nm), while the Ryzen 5 5600X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core i9-11900KF scores 24,585 against the Ryzen 5 5600X's 21,845 — a 11.8% lead for the Core i9-11900KF. L3 cache: 16 MB (total) on the Core i9-11900KF vs 32 MB on the Ryzen 5 5600X.

Feature	Core i9-11900KF	Ryzen 5 5600X
Cores / Threads	8 / 16+33%	6 / 12
Boost Clock	5.2 GHz+13%	4.6 GHz
Base Clock	3.5 GHz	3.7 GHz+6%
L3 Cache	16 MB (total)	32 MB+100%
L2 Cache	256K (per core)	512K (per core)+100%
Process	14 nm	7 nm, 12 nm-50%
Architecture	Rocket Lake (2021)	Vermeer (Zen 3) (2020−2022)
PassMark	24,585+13%	21,845
Cinebench R23 Multi	15,500	—

🧠

Memory & Platform

The Core i9-11900KF uses the LGA1200 socket (PCIe 4.0), while the Ryzen 5 5600X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i9-11900KF) vs 24 (Ryzen 5 5600X) — the Ryzen 5 5600X offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Z590,B560 (Core i9-11900KF) and AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 5 5600X).

Feature	Core i9-11900KF	Ryzen 5 5600X
Socket	LGA1200	AM4
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR4-3200	DDR4-3200
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	20	24+20%

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Core i9-11900KF supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core i9-11900KF) vs AMD-V (Ryzen 5 5600X). Primary use case: Ryzen 5 5600X targets Desktop.

Feature	Core i9-11900KF	Ryzen 5 5600X
Integrated GPU	No	No
Unlocked	Yes	Yes
AVX-512	Yes	No
Virtualization	VT-x, VT-d	AMD-V
Target Use	—	Desktop

💰

Value Analysis

The Core i9-11900KF launched at $513 MSRP, while the Ryzen 5 5600X debuted at $299. On MSRP ($513 vs $299), the Ryzen 5 5600X is $214 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-11900KF delivers 47.9 pts/$ vs 73.1 pts/$ for the Ryzen 5 5600X — making the Ryzen 5 5600X the 41.6% better value option.