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 i5-13600K

2022

Why buy it

✅Better for gaming: +49.4% higher average FPS across 50 shared CPU benchmark tests.
✅+45.5% larger total L3 cache (24 MB vs 17 MB).
✅Newer platform on LGA1700 with DDR5 support instead of FCBGA2518 and DDR4.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with UHD Graphics 770, while Xeon D-2166NT needs a discrete GPU.

Trade-offs

❌Less compelling for workstation-style loads than Xeon D-2166NT, which brings 12 cores / 24 threads.
❌Launch MSRP is still $329 MSRP, while Xeon D-2166NT mostly shows up through inconsistent older-market listings.
❌47.1% higher power demand at 125W vs 85W.

Xeon D-2166NT

2018

Why buy it

✅Better for workstations and heavier parallel workloads: 12 cores / 24 threads.
✅Draws 85W instead of 125W, a 40W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-13600K across 50 shared CPU benchmark tests.
❌Lower PassMark (15,105 vs 37,655).
❌Smaller total L3 cache (17 MB vs 24 MB).
❌Older platform position on FCBGA2518 with DDR4, while Core i5-13600K moves to LGA1700 and DDR5.
❌No integrated graphics, while Core i5-13600K can still boot and troubleshoot without a discrete GPU.

Core i5-13600K

2022

Xeon D-2166NT

2018

Why buy it

✅Better for gaming: +49.4% higher average FPS across 50 shared CPU benchmark tests.
✅+45.5% larger total L3 cache (24 MB vs 17 MB).
✅Newer platform on LGA1700 with DDR5 support instead of FCBGA2518 and DDR4.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with UHD Graphics 770, while Xeon D-2166NT needs a discrete GPU.

Why buy it

✅Better for workstations and heavier parallel workloads: 12 cores / 24 threads.
✅Draws 85W instead of 125W, a 40W reduction.

Trade-offs

❌Less compelling for workstation-style loads than Xeon D-2166NT, which brings 12 cores / 24 threads.
❌Launch MSRP is still $329 MSRP, while Xeon D-2166NT mostly shows up through inconsistent older-market listings.
❌47.1% higher power demand at 125W vs 85W.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-13600K across 50 shared CPU benchmark tests.
❌Lower PassMark (15,105 vs 37,655).
❌Smaller total L3 cache (17 MB vs 24 MB).
❌Older platform position on FCBGA2518 with DDR4, while Core i5-13600K moves to LGA1700 and DDR5.
❌No integrated graphics, while Core i5-13600K can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i5-13600K better than Xeon D-2166NT?

Not in a simple one-size-fits-all way. Xeon D-2166NT makes more sense for workstation-style multi-core throughput, while Core i5-13600K is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

Which one is better for gaming?

If gaming is the priority, Core i5-13600K is the better pick here. According to our tests, it delivers 49.4% 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 i5-13600K is the better fit. You are getting 149.3% better PassMark, backed by 14 cores and 20 threads. It also carries the larger cache pool with 45.5% larger total L3 cache (24 MB vs 17 MB).

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

Core i5-13600K is the smarter buy today. Core i5-13600K is at an unclear MSRP at $329 MSRP versus unclear MSRP, and it gives you a 49.4% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (114.5 vs 0.0 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

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

Core i5-13600K is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2018), a healthier platform with LGA1700 and DDR5 instead of FCBGA2518, 45.5% larger total L3 cache (24 MB vs 17 MB), and more multi-core headroom with 14 cores / 20 threads instead of 12/24. That should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

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 i5-13600K Benchmark Check

Xeon D-2166NT Benchmark Check

Path of Exile 2

Preset	Core i5-13600K	Xeon D-2166NT
1080p
low	281 FPS	171 FPS
medium	264 FPS	135 FPS
high	220 FPS	109 FPS
ultra	188 FPS	87 FPS
1440p
low	235 FPS	138 FPS
medium	198 FPS	108 FPS
high	158 FPS	86 FPS
ultra	138 FPS	68 FPS
4K
low	159 FPS	65 FPS
medium	133 FPS	55 FPS
high	102 FPS	43 FPS
ultra	90 FPS	34 FPS

Open Core i5-13600K Open Xeon D-2166NT

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-13600K	Xeon D-2166NT
1080p
low	632 FPS	141 FPS
medium	533 FPS	125 FPS
high	450 FPS	113 FPS
ultra	416 FPS	90 FPS
1440p
low	540 FPS	125 FPS
medium	474 FPS	113 FPS
high	403 FPS	102 FPS
ultra	351 FPS	81 FPS
4K
low	316 FPS	91 FPS
medium	282 FPS	85 FPS
high	269 FPS	75 FPS
ultra	238 FPS	58 FPS

Open Core i5-13600K Open Xeon D-2166NT

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-13600K	Xeon D-2166NT
1080p
low	663 FPS	378 FPS
medium	543 FPS	378 FPS
high	477 FPS	378 FPS
ultra	414 FPS	378 FPS
1440p
low	600 FPS	378 FPS
medium	499 FPS	378 FPS
high	434 FPS	366 FPS
ultra	376 FPS	318 FPS
4K
low	441 FPS	378 FPS
medium	381 FPS	305 FPS
high	344 FPS	258 FPS
ultra	295 FPS	207 FPS

Open Core i5-13600K Open Xeon D-2166NT

League of Legends

League of Legends

Valorant

Preset	Core i5-13600K	Xeon D-2166NT
1080p
low	941 FPS	378 FPS
medium	941 FPS	378 FPS
high	923 FPS	378 FPS
ultra	831 FPS	378 FPS
1440p
low	941 FPS	378 FPS
medium	850 FPS	378 FPS
high	738 FPS	378 FPS
ultra	651 FPS	378 FPS
4K
low	651 FPS	378 FPS
medium	588 FPS	378 FPS
high	529 FPS	357 FPS
ultra	437 FPS	306 FPS

Open Core i5-13600K Open Xeon D-2166NT

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-13600K and Xeon D-2166NT

Core i5-13600K

The Core i5-13600K is manufactured by Intel. It was released in 27 September 2022 (3 years ago). It is based on the Raptor Lake, Raptor Cove, Gracemont (2022) architecture. It features 14 cores and 20 threads. Base frequency is 3.5 GHz, with boost up to 5.1 GHz. L3 cache: 24 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 125 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 37,655 points. Launch price was $319.

Xeon D-2166NT

The Xeon D-2166NT is manufactured by Intel. It was released in 7 February 2018 (7 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 12 cores and 24 threads. Base frequency is 2 GHz, with boost up to 3 GHz. L3 cache: 16.5 MB. L2 cache: 12 MB. Built on 14 nm process technology. Socket: FCBGA2518. Thermal design power (TDP): 85 Watt. Memory support: DDR4. Passmark benchmark score: 15,105 points. Launch price was $1,005.

⚡

Processing Power

The Core i5-13600K packs 14 cores / 20 threads, while the Xeon D-2166NT offers 12 cores / 24 threads — the Core i5-13600K has 2 more cores. Boost clocks reach 5.1 GHz on the Core i5-13600K versus 3 GHz on the Xeon D-2166NT — a 51.9% clock advantage for the Core i5-13600K (base: 3.5 GHz vs 2 GHz). The Core i5-13600K uses the Raptor Lake, Raptor Cove, Gracemont (2022) architecture (Intel 7 nm), while the Xeon D-2166NT uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Core i5-13600K scores 37,655 against the Xeon D-2166NT's 15,105 — a 85.5% lead for the Core i5-13600K. L3 cache: 24 MB on the Core i5-13600K vs 16.5 MB on the Xeon D-2166NT.

Feature	Core i5-13600K	Xeon D-2166NT
Cores / Threads	14 / 20+17%	12 / 24
Boost Clock	5.1 GHz+70%	3 GHz
Base Clock	3.5 GHz+75%	2 GHz
L3 Cache	24 MB+45%	16.5 MB
L2 Cache	2 MB (per core)	12 MB+500%
Process	Intel 7 nm-50%	14 nm
Architecture	Raptor Lake, Raptor Cove, Gracemont (2022)	Skylake (server) (2017−2018)
PassMark	37,655+149%	15,105

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Memory & Platform

The Core i5-13600K uses the LGA1700 socket (PCIe 5.0), while the Xeon D-2166NT uses FCBGA2518 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-13600K	Xeon D-2166NT
Socket	LGA1700	FCBGA2518
PCIe Generation	PCIe 5.0+67%	PCIe 3.0
Max RAM Speed	DDR5-5600	—
Max RAM Capacity	192 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	20	—

🔧

Advanced Features

Virtualization: VT-x, VT-d (Core i5-13600K) / not specified (Xeon D-2166NT). The Core i5-13600K includes integrated graphics (UHD Graphics 770), while the Xeon D-2166NT requires a dedicated GPU. Primary use case: Core i5-13600K targets Desktop.