Core i7-6900K vs Xeon E5-2687W v3

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 i7-6900K vs Xeon E5-2687W v3 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 i7-6900K vs Xeon E5-2687W v3: Pros, Cons & Final Verdict

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

Core i7-6900K

2016

Why buy it

✅Costs $1,052 less on MSRP ($1,089 MSRP vs $2,141 MSRP).
✅Delivers 98.5% more PassMark for each dollar spent, at 13.5 vs 6.8 PassMark/$ ($1,089 MSRP vs $2,141 MSRP).
✅Draws 140W instead of 160W, a 20W reduction.

Trade-offs

❌Smaller total L3 cache (20 MB vs 25 MB).
❌Less compelling for workstation-style loads than Xeon E5-2687W v3, which brings 10 cores / 20 threads.

Xeon E5-2687W v3

2014

Why buy it

✅+25% larger total L3 cache (25 MB vs 20 MB).
✅Better for workstations and heavier parallel workloads: 10 cores / 20 threads.

Trade-offs

❌Lower PassMark (14,538 vs 14,682).
❌Lower PassMark per dollar, at 6.8 vs 13.5 PassMark/$ ($2,141 MSRP vs $1,089 MSRP).

Quick Answers

So, is Core i7-6900K better than Xeon E5-2687W v3?

Not really, because they are built for different jobs. Xeon E5-2687W v3 makes more sense for workstation-style multi-core throughput, while Core i7-6900K 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 i7-6900K is the better pick. According to our tests, it delivers 1.3% 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 i7-6900K is the stronger fit. You are getting 1% better PassMark, backed by 8 cores and 16 threads.

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

Core i7-6900K is the better buy right now. Core i7-6900K comes in $1,052 cheaper on MSRP at $1,089 MSRP versus $2,141 MSRP, and it still gives you a 1.3% average FPS lead across 50 shared CPU game tests in our data. It is also 98.5% better value on MSRP (13.5 vs 6.8 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i7-6900K makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2016 vs 2014) and more multi-core headroom with 8 cores / 16 threads instead of 10/20. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-6900K vs Xeon E5-2687W v3 Technical Specifications

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

Core i7-6900K

The Core i7-6900K is manufactured by Intel. It was released in 31 May 2016 (9 years ago). It is based on the Broadwell-E (2016) architecture. It features 8 cores and 16 threads. Base frequency is 3.2 GHz, with boost up to 4 GHz. L3 cache: 20 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA2011. Thermal design power (TDP): 140 Watt. Memory support: DDR4. Passmark benchmark score: 14,682 points. Launch price was $1,020.

Xeon E5-2687W v3

The Xeon E5-2687W v3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 10 cores and 20 threads. Base frequency is 3.1 GHz, with boost up to 3.5 GHz. L3 cache: 25 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 160 Watt. Memory support: DDR4-1600, DDR4-1866, DDR4-2133. Passmark benchmark score: 14,538 points. Launch price was $800.

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Processing Power

The Core i7-6900K packs 8 cores / 16 threads, while the Xeon E5-2687W v3 offers 10 cores / 20 threads — the Xeon E5-2687W v3 has 2 more cores. Boost clocks reach 4 GHz on the Core i7-6900K versus 3.5 GHz on the Xeon E5-2687W v3 — a 13.3% clock advantage for the Core i7-6900K (base: 3.2 GHz vs 3.1 GHz). The Core i7-6900K uses the Broadwell-E (2016) architecture (14 nm), while the Xeon E5-2687W v3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Core i7-6900K scores 14,682 against the Xeon E5-2687W v3's 14,538 — a 1% lead for the Core i7-6900K. L3 cache: 20 MB (total) on the Core i7-6900K vs 25 MB (total) on the Xeon E5-2687W v3.

Feature	Core i7-6900K	Xeon E5-2687W v3
Cores / Threads	8 / 16	10 / 20+25%
Boost Clock	4 GHz+14%	3.5 GHz
Base Clock	3.2 GHz+3%	3.1 GHz
L3 Cache	20 MB (total)	25 MB (total)+25%
L2 Cache	256 kB (per core)	256K (per core)
Process	14 nm-36%	22 nm
Architecture	Broadwell-E (2016)	Haswell-EP (2014−2015)
PassMark	14,682	14,538
Geekbench 6 Single	1,273	—
Geekbench 6 Multi	7,591	—

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Memory & Platform

Both processors use the LGA2011 socket with PCIe 3.0. Maximum memory speed reaches DDR4-2400 on the Core i7-6900K versus DDR4-2133 on the Xeon E5-2687W v3 — the Core i7-6900K supports 12.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon E5-2687W v3 supports up to 768 GB of RAM compared to 128 GB — 500% more capacity for professional workloads. Both feature 4-channel memory with ECC support. Both provide 40 PCIe lanes. Chipset compatibility: X99 (Core i7-6900K) and Intel X99,Intel C612 (Xeon E5-2687W v3).

Feature	Core i7-6900K	Xeon E5-2687W v3
Socket	LGA2011	LGA2011
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2400+13%	DDR4-2133
Max RAM Capacity	128 GB	768 GB+500%
RAM Channels	4	4
ECC Support	No	Yes
PCIe Lanes	40	40

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Advanced Features

Virtualization: VT-x, VT-d (Core i7-6900K) / not specified (Xeon E5-2687W v3). Primary use case: Core i7-6900K targets High-End Desktop.

Feature	Core i7-6900K	Xeon E5-2687W v3
Integrated GPU	No	No
IGPU Model	None	—
Unlocked	Yes	—
AVX-512	No	—
Virtualization	VT-x, VT-d	—
Target Use	High-End Desktop	—

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Value Analysis

At launch, the Core i7-6900K was priced at $1089, while the Xeon E5-2687W v3 came in at $2141. On launch pricing ($1089 vs $2141), Core i7-6900K was $1052 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-6900K delivers 13.5 pts/$ vs 6.8 pts/$ for the Xeon E5-2687W v3 — making the Core i7-6900K the 66% better value option.

Feature	Core i7-6900K	Xeon E5-2687W v3
MSRP	$1089-49%	$2141
Performance per Dollar	13.5+99%	6.8
Release Date	2016	2014

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