Xeon D-2166NT vs Xeon E5-4660 v4

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.

Xeon D-2166NT vs Xeon E5-4660 v4 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.

Xeon D-2166NT vs Xeon E5-4660 v4: Pros, Cons & Final Verdict

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

Xeon D-2166NT

2018

Why buy it

✅Draws 85W instead of 120W, a 35W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5-4660 v4 across 50 shared CPU benchmark tests.
❌Lower PassMark (15,105 vs 15,375).
❌Smaller total L3 cache (17 MB vs 40 MB).

Xeon E5-4660 v4

2016

Why buy it

✅Better for gaming: +12.9% higher average FPS across 50 shared CPU benchmark tests.
✅+142.4% larger total L3 cache (40 MB vs 17 MB).

Trade-offs

❌41.2% higher power demand at 120W vs 85W.

Quick Answers

So, is Xeon E5-4660 v4 better than Xeon D-2166NT?

Yes. Xeon E5-4660 v4 is the better all-around CPU here. It gives you a 12.9% average FPS lead across 50 shared CPU game tests in our data and 1.8% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Xeon E5-4660 v4 is the better pick. According to our tests, it delivers 12.9% 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 E5-4660 v4 is the stronger fit. You are getting 1.8% better PassMark, backed by 16 cores and 32 threads. It also has the larger cache pool with 142.4% larger total L3 cache (40 MB vs 17 MB).

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

Xeon E5-4660 v4 still makes the most sense overall. Xeon E5-4660 v4 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 12.9% average FPS lead across 50 shared CPU game tests in our data.

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

Xeon D-2166NT makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2016). That makes it the safer long-term bet.

Xeon D-2166NT vs Xeon E5-4660 v4 Technical Specifications

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

Xeon D-2166NT

The Xeon D-2166NT is manufactured by Intel. It was released in 7 February 2018 (7 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 12 cores and 24 threads. Base frequency is 2 GHz, with boost up to 3 GHz. L3 cache: 16.5 MB. L2 cache: 12 MB. Built on 14 nm process technology. Socket: FCBGA2518. Thermal design power (TDP): 85 Watt. Memory support: DDR4. Passmark benchmark score: 15,105 points. Launch price was $1,005.

Xeon E5-4660 v4

The Xeon E5-4660 v4 is manufactured by Intel. It was released in 20 June 2016 (9 years ago). It is based on the Broadwell (2015−2019) architecture. It features 16 cores and 32 threads. Base frequency is 2.2 GHz, with boost up to 3 GHz. L3 cache: 40 MB. L2 cache: 4 MB. Built on 14 nm process technology. Socket: LGA2011. Thermal design power (TDP): 120 Watt. Memory support: DDR4. Passmark benchmark score: 15,375 points. Launch price was $4,727.

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Processing Power

The Xeon D-2166NT packs 12 cores / 24 threads, while the Xeon E5-4660 v4 offers 16 cores / 32 threads — the Xeon E5-4660 v4 has 4 more cores. Boost clocks reach 3 GHz on the Xeon D-2166NT versus 3 GHz on the Xeon E5-4660 v4 — identical boost frequencies (base: 2 GHz vs 2.2 GHz). The Xeon D-2166NT uses the Skylake (server) (2017−2018) architecture (14 nm), while the Xeon E5-4660 v4 uses Broadwell (2015−2019) (14 nm). In PassMark, the Xeon D-2166NT scores 15,105 against the Xeon E5-4660 v4's 15,375 — a 1.8% lead for the Xeon E5-4660 v4. L3 cache: 16.5 MB on the Xeon D-2166NT vs 40 MB on the Xeon E5-4660 v4.

Feature	Xeon D-2166NT	Xeon E5-4660 v4
Cores / Threads	12 / 24	16 / 32+33%
Boost Clock	3 GHz	3 GHz
Base Clock	2 GHz	2.2 GHz+10%
L3 Cache	16.5 MB	40 MB+142%
L2 Cache	12 MB+200%	4 MB
Process	14 nm	14 nm
Architecture	Skylake (server) (2017−2018)	Broadwell (2015−2019)
PassMark	15,105	15,375+2%

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Memory & Platform

The Xeon D-2166NT uses the FCBGA2518 socket (PCIe 3.0), while the Xeon E5-4660 v4 uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard.