Core i7-6800K vs Xeon E5-4620 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 i7-6800K vs Xeon E5-4620 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 i7-6800K vs Xeon E5-4620 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 i7-6800K

2016

Why buy it

✅+1.8% higher PassMark.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5-4620 v3 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (15 MB vs 25 MB).
❌Less compelling for workstation-style loads than Xeon E5-4620 v3, which brings 10 cores / 20 threads.
❌Launch MSRP is still $434 MSRP, while Xeon E5-4620 v3 mostly shows up through inconsistent older-market listings.
❌33.3% higher power demand at 140W vs 105W.

Xeon E5-4620 v3

2015

Why buy it

✅Better for gaming: +8.5% higher average FPS across 50 shared CPU benchmark tests.
✅+66.7% larger total L3 cache (25 MB vs 15 MB).
✅Better for workstations and heavier parallel workloads: 10 cores / 20 threads.
✅Draws 105W instead of 140W, a 35W reduction.

Trade-offs

❌Lower PassMark (10,525 vs 10,715).

Quick Answers

So, is Core i7-6800K better than Xeon E5-4620 v3?

Not really, because they are built for different jobs. Xeon E5-4620 v3 makes more sense for workstation-style multi-core throughput, while Core i7-6800K is the more practical desktop choice for gaming, platform cost, and everyday use.

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

For streaming, content creation, and heavier multitasking, Core i7-6800K is the stronger fit. You are getting 1.8% better PassMark, backed by 6 cores and 12 threads.

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

Core i7-6800K is the better buy right now. Core i7-6800K comes in at an unclear MSRP at $434 MSRP versus unclear MSRP, and it still gives you 1.8% better PassMark. The compromise is that Xeon E5-4620 v3 is still the better pure gaming CPU with a 8.5% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (24.7 vs 0.0 PassMark/$), 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 i7-6800K makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2016 vs 2015) and more multi-core headroom with 6 cores / 12 threads instead of 10/20. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-6800K vs Xeon E5-4620 v3 Technical Specifications

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

Core i7-6800K

The Core i7-6800K is manufactured by Intel. It was released in 31 May 2016 (9 years ago). It is based on the Broadwell-E (2016) architecture. It features 6 cores and 12 threads. Base frequency is 3.4 GHz, with boost up to 3.8 GHz. L3 cache: 15 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA2011. Thermal design power (TDP): 140 Watt. Memory support: DDR4. Passmark benchmark score: 10,715 points. Launch price was $345.

Xeon E5-4620 v3

The Xeon E5-4620 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 GHz, with boost up to 2.6 GHz. L3 cache: 25 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 10,525 points. Launch price was $800.

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Processing Power

The Core i7-6800K packs 6 cores / 12 threads, while the Xeon E5-4620 v3 offers 10 cores / 20 threads — the Xeon E5-4620 v3 has 4 more cores. Boost clocks reach 3.8 GHz on the Core i7-6800K versus 2.6 GHz on the Xeon E5-4620 v3 — a 37.5% clock advantage for the Core i7-6800K (base: 3.4 GHz vs 2 GHz). The Core i7-6800K uses the Broadwell-E (2016) architecture (14 nm), while the Xeon E5-4620 v3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Core i7-6800K scores 10,715 against the Xeon E5-4620 v3's 10,525 — a 1.8% lead for the Core i7-6800K. L3 cache: 15 MB (total) on the Core i7-6800K vs 25 MB (total) on the Xeon E5-4620 v3.

Feature	Core i7-6800K	Xeon E5-4620 v3
Cores / Threads	6 / 12	10 / 20+67%
Boost Clock	3.8 GHz+46%	2.6 GHz
Base Clock	3.4 GHz+70%	2 GHz
L3 Cache	15 MB (total)	25 MB (total)+67%
L2 Cache	256 kB (per core)	256K (per core)
Process	14 nm-36%	22 nm
Architecture	Broadwell-E (2016)	Haswell-EP (2014−2015)
PassMark	10,715+2%	10,525