Core i5-6402P vs Xeon X5687

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 i5-6402P vs Xeon X5687 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 i5-6402P vs Xeon X5687: Pros, Cons & Final Verdict

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

Core i5-6402P

2015

Why buy it

✅Costs $370 less on MSRP ($182 MSRP vs $552 MSRP).
✅Delivers 200.9% more PassMark for each dollar spent, at 29.4 vs 9.8 PassMark/$ ($182 MSRP vs $552 MSRP).
✅Draws 65W instead of 130W, a 65W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon X5687 across 50 shared CPU benchmark tests.
❌Lower PassMark (5,343 vs 5,386).
❌Smaller total L3 cache (6 MB vs 12 MB).
❌Less compelling for workstation-style loads than Xeon X5687, which brings 4 cores / 8 threads and 36 PCIe lanes.

Xeon X5687

2011

Why buy it

✅Better for gaming: +18.3% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (12 MB vs 6 MB).
✅Better for workstations and heavier parallel workloads: 4 cores / 8 threads, plus 36 PCIe lanes vs 0.
✅100+% more PCIe lanes (36 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark per dollar, at 9.8 vs 29.4 PassMark/$ ($552 MSRP vs $182 MSRP).
❌100% higher power demand at 130W vs 65W.

Quick Answers

So, is Xeon X5687 better than Core i5-6402P?

Not really, because they are built for different jobs. Xeon X5687 makes more sense for workstation-style multi-core throughput, while Core i5-6402P is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Xeon X5687 is the better pick. According to our tests, it delivers 18.3% 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, Xeon X5687 is the stronger fit. You are getting 0.8% better PassMark, backed by 4 cores and 8 threads. It also has the larger cache pool with 100% larger total L3 cache (12 MB vs 6 MB).

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

Xeon X5687 is still the much better call for a fresh build. Xeon X5687 comes in 203.3% more expensive on MSRP at $552 MSRP versus $182 MSRP, and it still gives you a 18.3% average FPS lead across 50 shared CPU game tests in our data. Core i5-6402P only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2015 platform. Even with 200.9% better value on paper (29.4 vs 9.8 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1151.

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

Core i5-6402P makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2015 vs 2011). That makes it the safer long-term bet.

Core i5-6402P vs Xeon X5687 Technical Specifications

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

Core i5-6402P

The Core i5-6402P is manufactured by Intel. It was released in 27 December 2015 (9 years ago). It is based on the Skylake (2015−2016) architecture. It features 4 cores and 4 threads. Base frequency is 2.8 GHz, with boost up to 3.4 GHz. L3 cache: 6 MB. L2 cache: 1 MB. Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 65 Watt. Memory support: DDR4-1866/2133, DDR3L-1333/1600. Passmark benchmark score: 5,343 points. Launch price was $187.

Xeon X5687

The Xeon X5687 is manufactured by Intel. It was released in 14 February 2011 (14 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 4 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 3.86 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 5,386 points. Launch price was $121.

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Processing Power

The Core i5-6402P packs 4 cores / 4 threads, matching the Xeon X5687's 4 cores. Boost clocks reach 3.4 GHz on the Core i5-6402P versus 3.86 GHz on the Xeon X5687 — a 12.7% clock advantage for the Xeon X5687 (base: 2.8 GHz vs 3.6 GHz). The Core i5-6402P uses the Skylake (2015−2016) architecture (14 nm), while the Xeon X5687 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Core i5-6402P scores 5,343 against the Xeon X5687's 5,386 — a 0.8% lead for the Xeon X5687. L3 cache: 6 MB on the Core i5-6402P vs 12 MB (total) on the Xeon X5687.

Feature	Core i5-6402P	Xeon X5687
Cores / Threads	4 / 4	4 / 8
Boost Clock	3.4 GHz	3.86 GHz+14%
Base Clock	2.8 GHz	3.6 GHz+29%
L3 Cache	6 MB	12 MB (total)+100%
L2 Cache	1 MB+300%	256 kB (per core)
Process	14 nm-56%	32 nm
Architecture	Skylake (2015−2016)	Westmere-EP (2010−2011)
PassMark	5,343	5,386
Geekbench 6 Single	—	1,643
Geekbench 6 Multi	—	5,386

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Memory & Platform

The Core i5-6402P uses the LGA1151 socket (PCIe 3.0), while the Xeon X5687 uses LGA1366 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i5-6402P	Xeon X5687
Socket	LGA1151	LGA1366
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	—	DDR3-1333
Max RAM Capacity	—	288 GB
RAM Channels	—	3
ECC Support	—	Yes
PCIe Lanes	—	36

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Advanced Features

Virtualization: not specified (Core i5-6402P) / VT-x, VT-d, EPT (Xeon X5687). Primary use case: Xeon X5687 targets Server.

Feature	Core i5-6402P	Xeon X5687
Integrated GPU	—	No
Unlocked	—	No
AVX-512	—	No
Virtualization	—	VT-x, VT-d, EPT
Target Use	—	Server

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Value Analysis

At launch, the Core i5-6402P was priced at $182, while the Xeon X5687 came in at $552. On launch pricing ($182 vs $552), Core i5-6402P was $370 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-6402P delivers 29.4 pts/$ vs 9.8 pts/$ for the Xeon X5687 — making the Core i5-6402P the 100.2% better value option.

Feature	Core i5-6402P	Xeon X5687
MSRP	$182-67%	$552
Performance per Dollar	29.4+200%	9.8
Release Date	2015	2011

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