Core i7-4578U vs Xeon X5550

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 i7-4578U vs Xeon X5550 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 i7-4578U vs Xeon X5550: Pros, Cons & Final Verdict

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

Core i7-4578U

2014

Why buy it

✅+1.3% higher PassMark.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon X5550 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (4 MB vs 8 MB).
❌Less compelling for workstation-style loads than Xeon X5550, which brings 4 cores / 8 threads.
❌438.9% higher power demand at 512W vs 95W.

Xeon X5550

2009

Why buy it

✅Better for gaming: +9.3% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (8 MB vs 4 MB).
✅Better for workstations and heavier parallel workloads: 4 cores / 8 threads.
✅Draws 95W instead of 512W, a 417W reduction.

Trade-offs

❌Lower PassMark (3,036 vs 3,075).

Quick Answers

So, is Core i7-4578U better than Xeon X5550?

Not really, because they are built for different jobs. Xeon X5550 makes more sense for workstation-style multi-core throughput, while Core i7-4578U 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 i7-4578U is the stronger fit. You are getting 1.3% better PassMark, backed by 2 cores and 4 threads.

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

Core i7-4578U still makes the most sense overall. Core i7-4578U comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 1.3% better PassMark.

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

Core i7-4578U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2009) and more multi-core headroom with 2 cores / 4 threads instead of 4/8. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-4578U vs Xeon X5550 Technical Specifications

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

Core i7-4578U

The Core i7-4578U is manufactured by Intel. It was released in 21 July 2014 (11 years ago). It is based on the Haswell (2013−2015) architecture. It features 2 cores and 4 threads. Base frequency is 3 GHz, with boost up to 3.5 GHz. L3 cache: 4 MB. L2 cache: 512 kB. Built on 22 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 28 Watt. Memory support: DDR3. Passmark benchmark score: 3,075 points. Launch price was $426.

Xeon X5550

The Xeon X5550 is manufactured by Intel. It was released in 30 March 2009 (16 years ago). It is based on the Gainestown (2009−2010) architecture. It features 4 cores and 8 threads. Base frequency is 2.66 GHz, with boost up to 3.06 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 45 nm process technology. Socket: LGA1366. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 3,036 points. Launch price was $62.

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Processing Power

The Core i7-4578U packs 2 cores / 4 threads, while the Xeon X5550 offers 4 cores / 8 threads — the Xeon X5550 has 2 more cores. Boost clocks reach 3.5 GHz on the Core i7-4578U versus 3.06 GHz on the Xeon X5550 — a 13.4% clock advantage for the Core i7-4578U (base: 3 GHz vs 2.66 GHz). The Core i7-4578U uses the Haswell (2013−2015) architecture (22 nm), while the Xeon X5550 uses Gainestown (2009−2010) (45 nm). In PassMark, the Core i7-4578U scores 3,075 against the Xeon X5550's 3,036 — a 1.3% lead for the Core i7-4578U. L3 cache: 4 MB on the Core i7-4578U vs 8 MB (total) on the Xeon X5550.

Feature	Core i7-4578U	Xeon X5550
Cores / Threads	2 / 4	4 / 8+100%
Boost Clock	3.5 GHz+14%	3.06 GHz
Base Clock	3 GHz+13%	2.66 GHz
L3 Cache	4 MB	8 MB (total)+100%
L2 Cache	512 kB+100%	256 kB (per core)
Process	22 nm-51%	45 nm
Architecture	Haswell (2013−2015)	Gainestown (2009−2010)
PassMark	3,075+1%	3,036

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Memory & Platform

The Core i7-4578U uses the FCBGA1168 socket (PCIe 3.0), while the Xeon X5550 uses LGA1366 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i7-4578U	Xeon X5550
Socket	FCBGA1168	LGA1366
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	—	DDR3-1333
RAM Channels	—	3
ECC Support	—	Yes

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Advanced Features

Virtualization: not specified (Core i7-4578U) / VT-x, VT-d, EPT (Xeon X5550). Primary use case: Xeon X5550 targets Workstation. Direct competitor: Xeon X5550 rivals Core i3-2100.