Core i5-8265U vs Xeon E3-1225 v6

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 i5-8265U vs Xeon E3-1225 v6 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 i5-8265U vs Xeon E3-1225 v6: Pros, Cons & Final Verdict

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

Core i5-8265U

2018

Why buy it

✅Better for gaming: +9.2% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 15W instead of 73W, a 58W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel UHD Graphics 620, while Xeon E3-1225 v6 needs a discrete GPU.

Trade-offs

❌Smaller total L3 cache (6 MB vs 8 MB).

Xeon E3-1225 v6

2017

Why buy it

✅+33.3% larger total L3 cache (8 MB vs 6 MB).

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-8265U across 50 shared CPU benchmark tests.
❌Lower PassMark (5,740 vs 5,812).
❌386.7% higher power demand at 73W vs 15W.
❌No integrated graphics, while Core i5-8265U can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i5-8265U better than Xeon E3-1225 v6?

Not really, because they are built for different jobs. Xeon E3-1225 v6 makes more sense for workstation-style multi-core throughput, while Core i5-8265U is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Core i5-8265U is the better pick. According to our tests, it delivers 9.2% 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, Core i5-8265U is the stronger fit. You are getting 1.3% better PassMark, backed by 4 cores and 8 threads.

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

Core i5-8265U still makes the most sense overall. Core i5-8265U comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 9.2% average FPS lead across 50 shared CPU game tests in our data.

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

Core i5-8265U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2017) and more multi-core headroom with 4 cores / 8 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i5-8265U vs Xeon E3-1225 v6 Technical Specifications

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

Core i5-8265U

The Core i5-8265U is manufactured by Intel. It was released in 1 October 2018 (7 years ago). It is based on the Whiskey Lake-U (2018−2019) architecture. It features 4 cores and 8 threads. Base frequency is 1.6 GHz, with boost up to 3.9 GHz. L3 cache: 6 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 15 Watt. Memory support: DDR4. Passmark benchmark score: 5,812 points. Launch price was $297.

Xeon E3-1225 v6

The Xeon E3-1225 v6 is manufactured by Intel. It was released in 28 March 2017 (8 years ago). It is based on the Kaby Lake (2016−2019) architecture. It features 4 cores and 4 threads. Base frequency is 3.3 GHz, with boost up to 3.7 GHz. L3 cache: 8 MB. L2 cache: 1 MB. Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 73 Watt. Memory support: DDR4-2400, DDR3L-1866. Passmark benchmark score: 5,740 points. Launch price was $213.

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Processing Power

The Core i5-8265U packs 4 cores / 8 threads, matching the Xeon E3-1225 v6's 4 cores. Boost clocks reach 3.9 GHz on the Core i5-8265U versus 3.7 GHz on the Xeon E3-1225 v6 — a 5.3% clock advantage for the Core i5-8265U (base: 1.6 GHz vs 3.3 GHz). The Core i5-8265U uses the Whiskey Lake-U (2018−2019) architecture (14 nm), while the Xeon E3-1225 v6 uses Kaby Lake (2016−2019) (14 nm). In PassMark, the Core i5-8265U scores 5,812 against the Xeon E3-1225 v6's 5,740 — a 1.2% lead for the Core i5-8265U. L3 cache: 6 MB (total) on the Core i5-8265U vs 8 MB on the Xeon E3-1225 v6.

Feature	Core i5-8265U	Xeon E3-1225 v6
Cores / Threads	4 / 8	4 / 4
Boost Clock	3.9 GHz+5%	3.7 GHz
Base Clock	1.6 GHz	3.3 GHz+106%
L3 Cache	6 MB (total)	8 MB+33%
L2 Cache	256 kB (per core)	1 MB+300%
Process	14 nm	14 nm
Architecture	Whiskey Lake-U (2018−2019)	Kaby Lake (2016−2019)
PassMark	5,812+1%	5,740
Cinebench R23 Multi	3,000	—
Geekbench 6 Single	1,200	—
Geekbench 6 Multi	3,500	—

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Memory & Platform

The Core i5-8265U uses the FCBGA1528 socket (PCIe 3.0), while the Xeon E3-1225 v6 uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-8265U	Xeon E3-1225 v6
Socket	FCBGA1528	LGA1151
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2400	—
Max RAM Capacity	64 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, VT-d, EPT (Core i5-8265U) / not specified (Xeon E3-1225 v6). The Core i5-8265U includes integrated graphics (Intel UHD Graphics 620), while the Xeon E3-1225 v6 requires a dedicated GPU. Primary use case: Core i5-8265U targets Mainstream Laptop.