Xeon Gold 6142 vs Xeon Gold 6256

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 Gold 6142 vs Xeon Gold 6256 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 Gold 6142 vs Xeon Gold 6256: Pros, Cons & Final Verdict

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

Xeon Gold 6142

2017

Why buy it

✅+0.6% higher PassMark.
✅Draws 150W instead of 205W, a 55W reduction.
✅100+% more PCIe lanes (48 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon Gold 6256 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (22 MB vs 33 MB).

Xeon Gold 6256

2020

Why buy it

✅Better for gaming: +24.1% higher average FPS across 50 shared CPU benchmark tests.
✅+50% larger total L3 cache (33 MB vs 22 MB).

Trade-offs

❌Lower PassMark (25,334 vs 25,490).
❌36.7% higher power demand at 205W vs 150W.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Quick Answers

So, is Xeon Gold 6142 better than Xeon Gold 6256?

It depends on what you want from the system. For gaming, Xeon Gold 6256 is ahead with a 24.1% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Xeon Gold 6142 pulls ahead with 0.6% better PassMark. Xeon Gold 6256 also has the bigger cache pool with 50% larger total L3 cache (33 MB vs 22 MB).

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

For streaming, content creation, and heavier multitasking, Xeon Gold 6142 is the stronger fit. You are getting 0.6% better PassMark, backed by 16 cores and 32 threads.

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

Xeon Gold 6142 still makes the most sense overall. Xeon Gold 6142 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 0.6% better PassMark.

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

Xeon Gold 6256 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2017) and 50% larger total L3 cache (33 MB vs 22 MB). That makes it the safer long-term bet.

Xeon Gold 6142 vs Xeon Gold 6256 Technical Specifications

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

Xeon Gold 6142

The Xeon Gold 6142 is manufactured by Intel. It was released in 25 April 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 16 cores and 32 threads. Base frequency is 2.6 GHz, with boost up to 3.7 GHz. L3 cache: 22 MB. L2 cache: 16 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 150 Watt. Memory support: DDR4-2666. Passmark benchmark score: 25,490 points. Launch price was $2,946.

Xeon Gold 6256

The Xeon Gold 6256 is manufactured by Intel. It was released in 2015-01-01. It features 12 cores and 24 threads. Base frequency is 3.6 GHz, with boost up to 4.5 GHz. L3 cache: 33 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 205 Watt. Memory support: DDR4-2933. Passmark benchmark score: 25,334 points. Launch price was $800.

⚡

Processing Power

The Xeon Gold 6142 packs 16 cores / 32 threads, while the Xeon Gold 6256 offers 12 cores / 24 threads — the Xeon Gold 6142 has 4 more cores. Boost clocks reach 3.7 GHz on the Xeon Gold 6142 versus 4.5 GHz on the Xeon Gold 6256 — a 19.5% clock advantage for the Xeon Gold 6256 (base: 2.6 GHz vs 3.6 GHz). The Xeon Gold 6142 is built on the Skylake (server) (2017−2018) architecture. In PassMark, the Xeon Gold 6142 scores 25,490 against the Xeon Gold 6256's 25,334 — a 0.6% lead for the Xeon Gold 6142. L3 cache: 22 MB on the Xeon Gold 6142 vs 33 MB on the Xeon Gold 6256.

Feature	Xeon Gold 6142	Xeon Gold 6256
Cores / Threads	16 / 32+33%	12 / 24
Boost Clock	3.7 GHz	4.5 GHz+22%
Base Clock	2.6 GHz	3.6 GHz+38%
L3 Cache	22 MB	33 MB+50%
L2 Cache	16 MB	—
Process	14 nm	14 nm
Architecture	Skylake (server) (2017−2018)	—
PassMark	25,490	25,334