Core i7-10870H vs Xeon E5-2666 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 i7-10870H vs Xeon E5-2666 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 i7-10870H vs Xeon E5-2666 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 i7-10870H

2020

Why buy it

✅Better for gaming: +16.3% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 45W instead of 135W, a 90W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with UHD Graphics 630, while Xeon E5-2666 V3 needs a discrete GPU.

Trade-offs

❌Smaller total L3 cache (12 MB vs 25 MB).
❌Less compelling for workstation-style loads than Xeon E5-2666 V3, which brings 10 cores / 20 threads.
❌Launch MSRP is still $417 MSRP, while Xeon E5-2666 V3 mostly shows up through inconsistent older-market listings.

Xeon E5-2666 V3

2014

Why buy it

✅+108.3% larger total L3 cache (25 MB vs 12 MB).
✅Better for workstations and heavier parallel workloads: 10 cores / 20 threads.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-10870H across 50 shared CPU benchmark tests.
❌Lower PassMark (14,044 vs 14,087).
❌200% higher power demand at 135W vs 45W.
❌No integrated graphics, while Core i7-10870H can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i7-10870H better than Xeon E5-2666 V3?

Not really, because they are built for different jobs. Xeon E5-2666 V3 makes more sense for workstation-style multi-core throughput, while Core i7-10870H 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 i7-10870H is the better pick. According to our tests, it delivers 16.3% 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 i7-10870H is the stronger fit. You are getting 0.3% better PassMark, backed by 8 cores and 16 threads.

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

Core i7-10870H is the better buy right now. Core i7-10870H comes in at an unclear MSRP at $417 MSRP versus unclear MSRP, and it still gives you a 16.3% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (33.8 vs 0.0 PassMark/$), 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 i7-10870H makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 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 i7-10870H vs Xeon E5-2666 V3 Technical Specifications

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

Core i7-10870H

The Core i7-10870H is manufactured by Intel. It was released in 17 September 2020 (5 years ago). It is based on the Comet Lake-H (2020) architecture. It features 8 cores and 16 threads. Base frequency is 2.2 GHz, with boost up to 4.8 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: BGA1440. Thermal design power (TDP): 45 Watt. Memory support: DDR4. Passmark benchmark score: 14,087 points. Launch price was $149.

Xeon E5-2666 V3

The Xeon E5-2666 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 2.9 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: LGA2011-3. Thermal design power (TDP): 135 Watt. Memory support: DDR3, DDR4 2133 MHz Quad-channel. Passmark benchmark score: 14,044 points. Launch price was $800.

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Processing Power

The Core i7-10870H packs 8 cores / 16 threads, while the Xeon E5-2666 V3 offers 10 cores / 20 threads — the Xeon E5-2666 V3 has 2 more cores. Boost clocks reach 4.8 GHz on the Core i7-10870H versus 3.5 GHz on the Xeon E5-2666 V3 — a 31.3% clock advantage for the Core i7-10870H (base: 2.2 GHz vs 2.9 GHz). The Core i7-10870H uses the Comet Lake-H (2020) architecture (14 nm), while the Xeon E5-2666 V3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Core i7-10870H scores 14,087 against the Xeon E5-2666 V3's 14,044 — a 0.3% lead for the Core i7-10870H. L3 cache: 12 MB (total) on the Core i7-10870H vs 25 MB (total) on the Xeon E5-2666 V3.

Feature	Core i7-10870H	Xeon E5-2666 V3
Cores / Threads	8 / 16	10 / 20+25%
Boost Clock	4.8 GHz+37%	3.5 GHz
Base Clock	2.2 GHz	2.9 GHz+32%
L3 Cache	12 MB (total)	25 MB (total)+108%
L2 Cache	256K (per core)	256K (per core)
Process	14 nm-36%	22 nm
Architecture	Comet Lake-H (2020)	Haswell-EP (2014−2015)
PassMark	14,087	14,044
Cinebench R23 Multi	9,594	—
Geekbench 6 Single	1,228	—
Geekbench 6 Multi	6,822	—

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Memory & Platform

The Core i7-10870H uses the BGA1440 socket (PCIe 3.0), while the Xeon E5-2666 V3 uses LGA2011-3 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i7-10870H	Xeon E5-2666 V3
Socket	BGA1440	LGA2011-3
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2933	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, VT-d, EPT (Core i7-10870H) / not specified (Xeon E5-2666 V3). The Core i7-10870H includes integrated graphics (UHD Graphics 630), while the Xeon E5-2666 V3 requires a dedicated GPU. Primary use case: Core i7-10870H targets Gaming. Direct competitor: Core i7-10870H rivals Ryzen 7 4800H.