Core i5-8259U vs Xeon E5-2620 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 i5-8259U vs Xeon E5-2620 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 i5-8259U vs Xeon E5-2620 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 i5-8259U

2018

Why buy it

✅+1.4% higher PassMark.
✅Draws 28W instead of 85W, a 57W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5-2620 v3 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (6 MB vs 15 MB).
❌Less compelling for workstation-style loads than Xeon E5-2620 v3, which brings 6 cores / 12 threads and 40 PCIe lanes.

Xeon E5-2620 v3

2014

Why buy it

✅Better for gaming: +5.7% higher average FPS across 50 shared CPU benchmark tests.
✅+150% larger total L3 cache (15 MB vs 6 MB).
✅Better for workstations and heavier parallel workloads: 6 cores / 12 threads, plus 40 PCIe lanes vs 0.
✅100+% more PCIe lanes (40 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (7,734 vs 7,843).
❌Launch MSRP is still $417 MSRP, while Core i5-8259U mostly shows up through inconsistent older-market listings.
❌203.6% higher power demand at 85W vs 28W.

Quick Answers

So, is Core i5-8259U better than Xeon E5-2620 v3?

Not really, because they are built for different jobs. Xeon E5-2620 v3 makes more sense for workstation-style multi-core throughput, while Core i5-8259U 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 i5-8259U is the stronger fit. You are getting 1.4% better PassMark, backed by 4 cores and 8 threads.

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

Core i5-8259U is still the faster CPU overall, but Xeon E5-2620 v3 is easier to justify if budget matters more than peak performance. Core i5-8259U comes in at an unclear MSRP at unclear MSRP versus $417 MSRP, and it still gives you 1.4% better PassMark. The compromise is that Xeon E5-2620 v3 is still the better pure gaming CPU with a 5.7% average FPS lead across 50 shared CPU game tests in our data. Xeon E5-2620 v3 is also 100.0% better value on MSRP (18.5 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Core i5-8259U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2014) and more multi-core headroom with 4 cores / 8 threads instead of 6/12. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i5-8259U vs Xeon E5-2620 v3 Technical Specifications

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

Core i5-8259U

The Core i5-8259U is manufactured by Intel. It was released in 5 April 2018 (7 years ago). It is based on the Coffee Lake-U (2018−2019) architecture. It features 4 cores and 8 threads. Base frequency is 2.3 GHz, with boost up to 3.8 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 28 Watt. Memory support: DDR4. Passmark benchmark score: 7,843 points. Launch price was $320.

Xeon E5-2620 v3

The Xeon E5-2620 v3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 6 cores and 12 threads. Base frequency is 2.4 GHz, with boost up to 3.2 GHz. L3 cache: 15 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 85 Watt. Memory support: DDR4-1600, DDR4-1866. Passmark benchmark score: 7,734 points. Launch price was $800.

⚡

Processing Power

The Core i5-8259U packs 4 cores / 8 threads, while the Xeon E5-2620 v3 offers 6 cores / 12 threads — the Xeon E5-2620 v3 has 2 more cores. Boost clocks reach 3.8 GHz on the Core i5-8259U versus 3.2 GHz on the Xeon E5-2620 v3 — a 17.1% clock advantage for the Core i5-8259U (base: 2.3 GHz vs 2.4 GHz). The Core i5-8259U uses the Coffee Lake-U (2018−2019) architecture (14 nm), while the Xeon E5-2620 v3 uses Haswell-EP (2014−2015) (22 nm). In PassMark, the Core i5-8259U scores 7,843 against the Xeon E5-2620 v3's 7,734 — a 1.4% lead for the Core i5-8259U. L3 cache: 6 MB (total) on the Core i5-8259U vs 15 MB (total) on the Xeon E5-2620 v3.

Feature	Core i5-8259U	Xeon E5-2620 v3
Cores / Threads	4 / 8	6 / 12+50%
Boost Clock	3.8 GHz+19%	3.2 GHz
Base Clock	2.3 GHz	2.4 GHz+4%
L3 Cache	6 MB (total)	15 MB (total)+150%
L2 Cache	256K (per core)	256K (per core)
Process	14 nm-36%	22 nm
Architecture	Coffee Lake-U (2018−2019)	Haswell-EP (2014−2015)
PassMark	7,843+1%	7,734

🧠

Memory & Platform

The Core i5-8259U uses the FCBGA1528 socket (PCIe 3.0), while the Xeon E5-2620 v3 uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-8259U	Xeon E5-2620 v3
Socket	FCBGA1528	LGA2011
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	—	DDR4-1866
Max RAM Capacity	—	768 GB
RAM Channels	—	4
ECC Support	—	Yes
PCIe Lanes	—	40