Celeron M 575 vs Xeon X6550

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.

Celeron M 575 vs Xeon X6550 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.

Celeron M 575 vs Xeon X6550: Pros, Cons & Final Verdict

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

Celeron M 575

2008

Why buy it

✅Draws 1W instead of 130W, a 129W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon X6550 across 50 shared CPU benchmark tests.
❌Lower PassMark (1,917 vs 1,936).
❌Less compelling for workstation-style loads than Xeon X6550, which brings 8 cores / 16 threads.
❌Launch MSRP is still $86 MSRP, while Xeon X6550 mostly shows up through inconsistent older-market listings.

Xeon X6550

2010

Why buy it

✅Better for gaming: +6.0% higher average FPS across 50 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 8 cores / 16 threads.

Trade-offs

❌12900% higher power demand at 130W vs 1W.

Quick Answers

So, is Xeon X6550 better than Celeron M 575?

Not really, because they are built for different jobs. Xeon X6550 makes more sense for workstation-style multi-core throughput, while Celeron M 575 is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Xeon X6550 is the better pick. According to our tests, it delivers 6.0% 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, Xeon X6550 is the stronger fit. You are getting 1% better PassMark, backed by 8 cores and 16 threads.

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

Xeon X6550 is still the much better call for a fresh build. Xeon X6550 comes in at an unclear MSRP at unclear MSRP versus $86 MSRP, and it still gives you a 6.0% average FPS lead across 50 shared CPU game tests in our data. Celeron M 575 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2008 platform. Even with 100.0% better value on paper (22.3 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on PGA478.

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

Xeon X6550 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2008) and more multi-core headroom with 8 cores / 16 threads instead of 1/1. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Celeron M 575 vs Xeon X6550 Technical Specifications

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

Celeron M 575

The Celeron M 575 is manufactured by Intel. It was released in 1 June 2008 (17 years ago). It is based on the Merom (2006−2008) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L2 cache: 1 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 1 MB. Passmark benchmark score: 1,917 points. Launch price was $86.

Xeon X6550

The Xeon X6550 is manufactured by Intel. It was released in 2015-01-01. It features 8 cores and 16 threads. Base frequency is 2 GHz, with boost up to 2.4 GHz. L3 cache: 18 MB L3 Cache. Built on 45 nm process technology. Socket: LGA1567. Thermal design power (TDP): 130 Watt. Passmark benchmark score: 1,936 points. Launch price was $800.

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Processing Power

The Celeron M 575 packs 1 cores / 1 threads, while the Xeon X6550 offers 8 cores / 16 threads — the Xeon X6550 has 7 more cores. Boost clocks reach 2 GHz on the Celeron M 575 versus 2.4 GHz on the Xeon X6550 — a 18.2% clock advantage for the Xeon X6550. The Celeron M 575 is built on the Merom (2006−2008) architecture. In PassMark, the Celeron M 575 scores 1,917 against the Xeon X6550's 1,936 — a 1% lead for the Xeon X6550.

Feature	Celeron M 575	Xeon X6550
Cores / Threads	1 / 1	8 / 16+700%
Boost Clock	2 GHz	2.4 GHz+20%
Base Clock	—	2 GHz
L3 Cache	—	18 MB L3 Cache
L2 Cache	1 MB	—
Process	65 nm	45 nm-31%
Architecture	Merom (2006−2008)	—
PassMark	1,917	1,936

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Memory & Platform

The Celeron M 575 uses the PGA478 socket (PCIe 1.1), while the Xeon X6550 uses LGA1567 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 800 on the Celeron M 575 versus DDR3-1333 on the Xeon X6550 — the Xeon X6550 supports 66.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. Memory channels: 2 (Celeron M 575) vs 4 (Xeon X6550). Chipset compatibility: GL40,GM45 (Celeron M 575) and Nehalem-EX (Xeon X6550).

Feature	Celeron M 575	Xeon X6550
Socket	PGA478	LGA1567
PCIe Generation	PCIe 1.1	PCIe 5.0+355%
Max RAM Speed	800	DDR3-1333+67%
Max RAM Capacity	4	—
RAM Channels	2	4+100%
ECC Support	No	Yes
PCIe Lanes	0	—

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Advanced Features

Neither processor supports overclocking. Virtualization support: false (Celeron M 575) vs VT-x, VT-d, EPT (Xeon X6550). Primary use case: Xeon X6550 targets Server. Direct competitor: Celeron M 575 rivals Mobile Sempron SI-40; Xeon X6550 rivals Core i7-980X.