Core i9-10900TE 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 i9-10900TE 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 i9-10900TE 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 i9-10900TE

2020

Why buy it

✅Better for gaming: +5.5% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 35W instead of 135W, a 100W reduction.

Trade-offs

❌Smaller total L3 cache (20 MB vs 25 MB).
❌Launch MSRP is still $309 MSRP, while Xeon E5-2666 V3 mostly shows up through inconsistent older-market listings.

Xeon E5-2666 V3

2014

Why buy it

✅+25% larger total L3 cache (25 MB vs 20 MB).

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-10900TE across 50 shared CPU benchmark tests.
❌Lower PassMark (14,044 vs 14,159).
❌285.7% higher power demand at 135W vs 35W.

Quick Answers

So, is Core i9-10900TE 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 i9-10900TE 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 i9-10900TE is the better pick. According to our tests, it delivers 5.5% 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 i9-10900TE is the stronger fit. You are getting 0.8% better PassMark, backed by 10 cores and 20 threads.

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

Core i9-10900TE is the better buy right now. Core i9-10900TE comes in at an unclear MSRP at $309 MSRP versus unclear MSRP, and it still gives you a 5.5% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (45.8 vs 0.0 PassMark/$), 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 i9-10900TE 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 10 cores / 20 threads instead of 10/20. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i9-10900TE vs Xeon E5-2666 V3 Technical Specifications

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

Core i9-10900TE

The Core i9-10900TE is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 10 cores and 20 threads. Base frequency is 1.8 GHz, with boost up to 4.5 GHz. L3 cache: 20 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 35 Watt. Memory support: DDR4. Passmark benchmark score: 14,159 points. Launch price was $488.

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

Both the Core i9-10900TE and Xeon E5-2666 V3 share an identical 10-core/20-thread configuration. Boost clocks reach 4.5 GHz on the Core i9-10900TE versus 3.5 GHz on the Xeon E5-2666 V3 — a 25% clock advantage for the Core i9-10900TE (base: 1.8 GHz vs 2.9 GHz). The Core i9-10900TE uses the Comet Lake (2020−2025) architecture (14 nm), while the Xeon E5-2666 V3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Core i9-10900TE scores 14,159 against the Xeon E5-2666 V3's 14,044 — a 0.8% lead for the Core i9-10900TE. L3 cache: 20 MB (total) on the Core i9-10900TE vs 25 MB (total) on the Xeon E5-2666 V3.

Feature	Core i9-10900TE	Xeon E5-2666 V3
Cores / Threads	10 / 20	10 / 20
Boost Clock	4.5 GHz+29%	3.5 GHz
Base Clock	1.8 GHz	2.9 GHz+61%
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	Comet Lake (2020−2025)	Haswell-EP (2014−2015)
PassMark	14,159	14,044

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Memory & Platform

The Core i9-10900TE uses the LGA1200 socket (PCIe 3.0), while the Xeon E5-2666 V3 uses LGA2011-3 (PCIe 3.0) — making them incompatible on the same motherboard.