Core i5-3550S vs Xeon X5647

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 i5-3550S vs Xeon X5647 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 i5-3550S vs Xeon X5647: Pros, Cons & Final Verdict

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

Core i5-3550S

2012

Why buy it

✅+0% higher PassMark.
✅Draws 65W instead of 130W, a 65W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics 2500, while Xeon X5647 needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Xeon X5647.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon X5647 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (6 MB vs 12 MB).
❌Less compelling for workstation-style loads than Xeon X5647, which brings 4 cores / 8 threads.
❌Launch MSRP is still $205 MSRP, while Xeon X5647 mostly shows up through inconsistent older-market listings.

Xeon X5647

2011

Why buy it

✅Better for gaming: +9.0% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (12 MB vs 6 MB).
✅Better for workstations and heavier parallel workloads: 4 cores / 8 threads.

Trade-offs

❌Lower PassMark (4,441 vs 4,442).
❌100% higher power demand at 130W vs 65W.
❌No integrated graphics, while Core i5-3550S can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike Core i5-3550S.

Quick Answers

So, is Core i5-3550S better than Xeon X5647?

Not really, because they are built for different jobs. Xeon X5647 makes more sense for workstation-style multi-core throughput, while Core i5-3550S 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 i5-3550S is the stronger fit. You are getting 0% better PassMark, backed by 4 cores and 4 threads.

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

Core i5-3550S is the better buy right now. Core i5-3550S comes in at an unclear MSRP at $205 MSRP versus unclear MSRP, and it still gives you 0% better PassMark. The compromise is that Xeon X5647 is still the better pure gaming CPU with a 9.0% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (21.7 vs 0.0 PassMark/$), 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 i5-3550S makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 vs 2011) and more multi-core headroom with 4 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 i5-3550S vs Xeon X5647 Technical Specifications

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

Core i5-3550S

The Core i5-3550S is manufactured by Intel. It was released in 29 April 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 4 cores and 4 threads. Base frequency is 3 GHz, with boost up to 3.7 GHz. L3 cache: 6144 kB (total). L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 4,442 points. Launch price was $350.

Xeon X5647

The Xeon X5647 is manufactured by Intel. It was released in 14 February 2011 (14 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 4 cores and 8 threads. Base frequency is 2.93 GHz, with boost up to 3.2 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 4,441 points. Launch price was $175.

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Processing Power

The Core i5-3550S packs 4 cores / 4 threads, matching the Xeon X5647's 4 cores. Boost clocks reach 3.7 GHz on the Core i5-3550S versus 3.2 GHz on the Xeon X5647 — a 14.5% clock advantage for the Core i5-3550S (base: 3 GHz vs 2.93 GHz). The Core i5-3550S uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Xeon X5647 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Core i5-3550S scores 4,442 against the Xeon X5647's 4,441 — a 0% lead for the Core i5-3550S. L3 cache: 6144 kB (total) on the Core i5-3550S vs 12 MB (total) on the Xeon X5647.

Feature	Core i5-3550S	Xeon X5647
Cores / Threads	4 / 4	4 / 8
Boost Clock	3.7 GHz+16%	3.2 GHz
Base Clock	3 GHz+2%	2.93 GHz
L3 Cache	6144 kB (total)	12 MB (total)+100%
L2 Cache	256 kB (per core)	256 kB (per core)
Process	22 nm-31%	32 nm
Architecture	Ivy Bridge (2012−2013)	Westmere-EP (2010−2011)
PassMark	4,442	4,441
Geekbench 6 Single	619	—

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Memory & Platform

The Core i5-3550S uses the LGA1155 socket (PCIe 3.0), while the Xeon X5647 uses LGA1366 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1600 on the Core i5-3550S versus DDR3-1066 on the Xeon X5647 — the Core i5-3550S supports 50.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. Memory channels: 2 (Core i5-3550S) vs 3 (Xeon X5647). Chipset compatibility: H61,H67,P67,Z68,B75,Z77 (Core i5-3550S) and Intel X58,Intel 5520 (Xeon X5647).

Feature	Core i5-3550S	Xeon X5647
Socket	LGA1155	LGA1366
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR3-1600+50%	DDR3-1066
Max RAM Capacity	32 GB	—
RAM Channels	2	3+50%
ECC Support	No	Yes
PCIe Lanes	16	—

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Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x, VT-d, EPT (Core i5-3550S) vs VT-x, VT-d (Xeon X5647). The Core i5-3550S includes integrated graphics (HD Graphics 2500), while the Xeon X5647 requires a dedicated GPU. Primary use case: Core i5-3550S targets Legacy Desktop, Xeon X5647 targets Workstation. Direct competitor: Core i5-3550S rivals FX-6350; Xeon X5647 rivals Core i7-980X.