Xeon D-1577 vs Xeon D-2146NT

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-1577 vs Xeon D-2146NT 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-1577 vs Xeon D-2146NT: 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-1577

2016

Why buy it

✅Better for gaming: +4.2% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 45W instead of 80W, a 35W reduction.

Trade-offs

❌Lower PassMark (11,645 vs 11,736).
❌Smaller total L3 cache (1.5 MB vs 11 MB).

Xeon D-2146NT

2018

Why buy it

✅+0.8% higher PassMark.
✅+633.3% larger total L3 cache (11 MB vs 1.5 MB).

Trade-offs

❌Worse for gaming: lower average FPS than Xeon D-1577 across 50 shared CPU benchmark tests.
❌77.8% higher power demand at 80W vs 45W.

Quick Answers

So, is Xeon D-2146NT better than Xeon D-1577?

It depends on what you want from the system. For gaming, Xeon D-1577 is ahead with a 4.2% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Xeon D-2146NT pulls ahead with 0.8% better PassMark. Xeon D-2146NT also has the bigger cache pool with 633.3% larger total L3 cache (11 MB vs 1.5 MB).

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Xeon D-2146NT is the stronger fit. You are getting 0.8% better PassMark, backed by 8 cores and 16 threads. It also has the larger cache pool with 633.3% larger total L3 cache (11 MB vs 1.5 MB).

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

Xeon D-2146NT still makes the most sense overall. Xeon D-2146NT comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 0.8% better PassMark.

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

Xeon D-2146NT makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2016), 633.3% larger total L3 cache (11 MB vs 1.5 MB), and more multi-core headroom with 8 cores / 16 threads instead of 16/32. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Xeon D-1577 vs Xeon D-2146NT Technical Specifications

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

Xeon D-1577

The Xeon D-1577 is manufactured by Intel. It was released in 24 February 2016 (9 years ago). It is based on the Broadwell (2015−2019) architecture. It features 16 cores and 32 threads. Base frequency is 1.3 GHz, with boost up to 2.1 GHz. L3 cache: 1.5 MB (per core). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1667. Thermal design power (TDP): 45 Watt. Memory support: DDR4, DDR3. Passmark benchmark score: 11,645 points. Launch price was $1,176.

Xeon D-2146NT

The Xeon D-2146NT 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 8 cores and 16 threads. Base frequency is 2.3 GHz, with boost up to 3 GHz. L3 cache: 11 MB. L2 cache: 8 MB. Built on 14 nm process technology. Socket: FCBGA2518. Thermal design power (TDP): 80 Watt. Memory support: DDR4. Passmark benchmark score: 11,736 points. Launch price was $641.

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Processing Power

The Xeon D-1577 packs 16 cores / 32 threads, while the Xeon D-2146NT offers 8 cores / 16 threads — the Xeon D-1577 has 8 more cores. Boost clocks reach 2.1 GHz on the Xeon D-1577 versus 3 GHz on the Xeon D-2146NT — a 35.3% clock advantage for the Xeon D-2146NT (base: 1.3 GHz vs 2.3 GHz). The Xeon D-1577 uses the Broadwell (2015−2019) architecture (14 nm), while the Xeon D-2146NT uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Xeon D-1577 scores 11,645 against the Xeon D-2146NT's 11,736 — a 0.8% lead for the Xeon D-2146NT. L3 cache: 1.5 MB (per core) on the Xeon D-1577 vs 11 MB on the Xeon D-2146NT.

Feature	Xeon D-1577	Xeon D-2146NT
Cores / Threads	16 / 32+100%	8 / 16
Boost Clock	2.1 GHz	3 GHz+43%
Base Clock	1.3 GHz	2.3 GHz+77%
L3 Cache	1.5 MB (per core)	11 MB+633%
L2 Cache	256K (per core)+3100%	8 MB
Process	14 nm	14 nm
Architecture	Broadwell (2015−2019)	Skylake (server) (2017−2018)
PassMark	11,645	11,736

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Memory & Platform

The Xeon D-1577 uses the FCBGA1667 socket (PCIe 3.0), while the Xeon D-2146NT uses FCBGA2518 (PCIe 3.0) — making them incompatible on the same motherboard.