Core i7-5820K vs Xeon D-1718T

CPU

GPU

Core i7-5820K

6 Cores12 Thrd140 WWMax: 3.6 GHz2014

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Xeon D-1718T

4 Cores8 Thrd46 WWMax: 3.5 GHz2022

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Core i7-5820K vs Xeon D-1718T Performance Spectrum

Core i7-5820K

6 / 12

9,826

+1.6%

9,674

0.0%

About PassMark

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.

Core i7-5820K vs Xeon D-1718T FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Core i7-5820K vs Xeon D-1718T: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Core i7-5820K

2014

Why buy it

✅Better for gaming: +7.3% higher average FPS across 50 shared CPU benchmark tests.
✅+50% larger total L3 cache (15 MB vs 10 MB).
✅75% more PCIe lanes (28 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark per dollar, at 25.3 vs 32.0 PassMark/$ ($389 MSRP vs $302 MSRP).
❌204.3% higher power demand at 140W vs 46W.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Xeon D-1718T

2022

Why buy it

✅Costs $87 less on MSRP ($302 MSRP vs $389 MSRP).
✅Delivers 26.8% more PassMark for each dollar spent, at 32.0 vs 25.3 PassMark/$ ($302 MSRP vs $389 MSRP).
✅Draws 46W instead of 140W, a 94W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-5820K across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (3,500 vs 5,383).
❌Smaller total L3 cache (10 MB vs 15 MB).

Quick Answers

So, is Core i7-5820K better than Xeon D-1718T?

Not really, because they are built for different jobs. Xeon D-1718T makes more sense for workstation-style multi-core throughput, while Core i7-5820K is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Core i7-5820K is the better pick. According to our tests, it delivers 7.3% 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 i7-5820K is the stronger fit. You are getting 53.8% better Geekbench multi-core, backed by 6 cores and 12 threads. It also has the larger cache pool with 50% larger total L3 cache (15 MB vs 10 MB).

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

Core i7-5820K is the easy recommendation for a fresh desktop build. Core i7-5820K comes in 28.8% more expensive on MSRP at $389 MSRP versus $302 MSRP, and it still gives you a 7.3% average FPS lead across 50 shared CPU game tests in our data. Xeon D-1718T only looks good on raw value math because it is a cheap legacy laptop chip, not because it is a real desktop gaming recommendation. It simply does not keep up in modern games, especially when the gap is already 7.3% in the shared gaming data.

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

Xeon D-1718T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2014) and AVX-512 support for heavier modern compute workloads. That makes it the safer long-term bet.

Core i7-5820K vs Xeon D-1718T Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Core i7-5820K

The Core i7-5820K is manufactured by Intel. It was released in 1 September 2014 (11 years ago). It is based on the Haswell-E (2014) architecture. It features 6 cores and 12 threads. Base frequency is 3.3 GHz, with boost up to 3.6 GHz. L3 cache: 15 MB (total). L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 140 Watt. Memory support: DDR4. Passmark benchmark score: 9,826 points. Launch price was $410.

Xeon D-1718T

The Xeon D-1718T is manufactured by Intel. It was released in 2015-01-01. It features 4 cores and 8 threads. Base frequency is 2.6 GHz, with boost up to 3.5 GHz. L3 cache: 10 MB. Built on 10 nm process technology. Socket: FCBGA2227. Thermal design power (TDP): 46 Watt. Memory support: DDR4. Passmark benchmark score: 9,674 points. Launch price was $800.

⚡

Processing Power

The Core i7-5820K packs 6 cores / 12 threads, while the Xeon D-1718T offers 4 cores / 8 threads — the Core i7-5820K has 2 more cores. Boost clocks reach 3.6 GHz on the Core i7-5820K versus 3.5 GHz on the Xeon D-1718T — a 2.8% clock advantage for the Core i7-5820K (base: 3.3 GHz vs 2.6 GHz). The Core i7-5820K is built on the Haswell-E (2014) architecture. In PassMark, the Core i7-5820K scores 9,826 against the Xeon D-1718T's 9,674 — a 1.6% lead for the Core i7-5820K. Geekbench 6 single-core — the metric most relevant to gaming — records 1,134 vs 900, a 23% lead for the Core i7-5820K that directly translates to higher frame rates. Multi-core Geekbench: 5,383 vs 3,500 (42.4% advantage for the Core i7-5820K). L3 cache: 15 MB (total) on the Core i7-5820K vs 10 MB on the Xeon D-1718T.

Feature	Core i7-5820K	Xeon D-1718T
Cores / Threads	6 / 12+50%	4 / 8
Boost Clock	3.6 GHz+3%	3.5 GHz
Base Clock	3.3 GHz+27%	2.6 GHz
L3 Cache	15 MB (total)+50%	10 MB
L2 Cache	256 kB (per core)	—
Process	22 nm	10 nm-55%
Architecture	Haswell-E (2014)	—
PassMark	9,826+2%	9,674
Cinebench R23 Multi	5,700	—
Geekbench 6 Single	1,134+26%	900
Geekbench 6 Multi	5,383+54%	3,500

🧠

Memory & Platform

The Core i7-5820K uses the LGA2011 socket (PCIe 3.0), while the Xeon D-1718T uses FCBGA2227 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2133 on the Core i7-5820K versus DDR4-2933 on the Xeon D-1718T — the Xeon D-1718T supports 37.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon D-1718T supports up to 256 GB of RAM compared to 64 GB — 300% more capacity for professional workloads. Memory channels: 4 (Core i7-5820K) vs 2 (Xeon D-1718T). PCIe lanes: 28 (Core i7-5820K) vs 16 (Xeon D-1718T) — the Core i7-5820K offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel X99 (Core i7-5820K) and SoC (Xeon D-1718T).

Feature	Core i7-5820K	Xeon D-1718T
Socket	LGA2011	FCBGA2227
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR4-2133	DDR4-2933+38%
Max RAM Capacity	64 GB	256 GB+300%
RAM Channels	4+100%	2
ECC Support	No	Yes
PCIe Lanes	28+75%	16

🔧

Advanced Features

Only the Core i7-5820K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon D-1718T supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: Yes (Core i7-5820K) vs VT-x, VT-d (Xeon D-1718T). Primary use case: Core i7-5820K targets Enthusiast Workstation, Xeon D-1718T targets Server/Edge. Direct competitor: Core i7-5820K rivals Ryzen 5 1600.

Feature	Core i7-5820K	Xeon D-1718T
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	Yes	No
AVX-512	No	Yes
Virtualization	Yes	VT-x, VT-d
Target Use	Enthusiast Workstation	Server/Edge

💰

Value Analysis

At launch, the Core i7-5820K was priced at $389, while the Xeon D-1718T came in at $302. On launch pricing ($389 vs $302), Xeon D-1718T was $87 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-5820K delivers 25.3 pts/$ vs 32.0 pts/$ for the Xeon D-1718T — making the Xeon D-1718T the 23.6% better value option.

Feature	Core i7-5820K	Xeon D-1718T
MSRP	$389	$302-22%
Performance per Dollar	25.3	32.0+26%
Release Date	2014	2022

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