Core M-5Y51 vs Xeon X5355

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 M-5Y51 vs Xeon X5355 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 M-5Y51 vs Xeon X5355: Pros, Cons & Final Verdict

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

Core M-5Y51

2014

Why buy it

✅Costs $4,210 less on MSRP ($281 MSRP vs $4,491 MSRP).
✅Delivers 1491.2% more PassMark for each dollar spent, at 7.2 vs 0.5 PassMark/$ ($281 MSRP vs $4,491 MSRP).

Trade-offs

❌Lower PassMark (2,030 vs 2,039).
❌Smaller total L3 cache (4 MB vs 8 MB).
❌Less compelling for workstation-style loads than Xeon X5355, which brings 4 cores / 4 threads.
❌326.7% higher power demand at 512W vs 120W.

Xeon X5355

2006

Why buy it

✅+0.4% higher PassMark.
✅+100% larger total L3 cache (8 MB vs 4 MB).
✅Better for workstations and heavier parallel workloads: 4 cores / 4 threads.
✅Draws 120W instead of 512W, a 392W reduction.

Trade-offs

❌Lower PassMark per dollar, at 0.5 vs 7.2 PassMark/$ ($4,491 MSRP vs $281 MSRP).

Quick Answers

So, is Core M-5Y51 better than Xeon X5355?

Not really, because they are built for different jobs. Xeon X5355 makes more sense for workstation-style multi-core throughput, while Core M-5Y51 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, Xeon X5355 is the stronger fit. You are getting 0.4% better PassMark, backed by 4 cores and 4 threads. It also has the larger cache pool with 100% larger total L3 cache (8 MB vs 4 MB).

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

Core M-5Y51 is the better buy right now. Core M-5Y51 comes in $4,210 cheaper on MSRP at $281 MSRP versus $4,491 MSRP, and it still gives you a 1.3% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Xeon X5355 is still stronger for heavier multi-core work with 0.4% better PassMark. It is also 1491.2% better value on MSRP (7.2 vs 0.5 PassMark/$), 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 M-5Y51 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2006). That makes it the safer long-term bet.

Core M-5Y51 vs Xeon X5355 Technical Specifications

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

Core M-5Y51

The Core M-5Y51 is manufactured by Intel. It was released in 27 October 2014 (11 years ago). It is based on the Broadwell-Y (2014) architecture. It features 2 cores and 4 threads. Base frequency is 1.1 GHz, with boost up to 2.6 GHz. L3 cache: 4 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1234. Thermal design power (TDP): 4.5 Watt. Memory support: DDR3. Passmark benchmark score: 2,030 points. Launch price was $69.

Xeon X5355

The Xeon X5355 is manufactured by Intel. It was released in 14 November 2006 (19 years ago). It is based on the Clovertown (2006−2007) architecture. It features 4 cores and 4 threads. Base frequency is 2.66 GHz, with boost up to 0.67 GHz. L3 cache: 8 MB L2 Cache. L2 cache: 4 MB (total). Built on 65 nm process technology. Socket: LGA771. Thermal design power (TDP): 120 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 2,039 points. Launch price was $1,172.

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Processing Power

The Core M-5Y51 packs 2 cores / 4 threads, while the Xeon X5355 offers 4 cores / 4 threads — the Xeon X5355 has 2 more cores. Boost clocks reach 2.6 GHz on the Core M-5Y51 versus 0.67 GHz on the Xeon X5355 — a 118% clock advantage for the Core M-5Y51 (base: 1.1 GHz vs 2.66 GHz). The Core M-5Y51 uses the Broadwell-Y (2014) architecture (14 nm), while the Xeon X5355 uses Clovertown (2006−2007) (65 nm). In PassMark, the Core M-5Y51 scores 2,030 against the Xeon X5355's 2,039 — a 0.4% lead for the Xeon X5355. L3 cache: 4 MB (total) on the Core M-5Y51 vs 8 MB L2 Cache on the Xeon X5355.

Feature	Core M-5Y51	Xeon X5355
Cores / Threads	2 / 4	4 / 4+100%
Boost Clock	2.6 GHz+288%	0.67 GHz
Base Clock	1.1 GHz	2.66 GHz+142%
L3 Cache	4 MB (total)	8 MB L2 Cache+100%
L2 Cache	256K (per core)+6300%	4 MB (total)
Process	14 nm-78%	65 nm
Architecture	Broadwell-Y (2014)	Clovertown (2006−2007)
PassMark	2,030	2,039

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Memory & Platform

The Core M-5Y51 uses the FCBGA1234 socket (PCIe 3.0), while the Xeon X5355 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core M-5Y51	Xeon X5355
Socket	FCBGA1234	LGA771
PCIe Generation	PCIe 3.0+50%	PCIe 2.0

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Value Analysis

At launch, the Core M-5Y51 was priced at $281, while the Xeon X5355 came in at $4491. On launch pricing ($281 vs $4491), Core M-5Y51 was $4210 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core M-5Y51 delivers 7.2 pts/$ vs 0.5 pts/$ for the Xeon X5355 — making the Core M-5Y51 the 176.3% better value option.

Feature	Core M-5Y51	Xeon X5355
MSRP	$281-94%	$4491
Performance per Dollar	7.2+1340%	0.5
Release Date	2014	2006

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