Core i5-3450S vs Xeon L5639

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 i5-3450S vs Xeon L5639 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 i5-3450S vs Xeon L5639: Pros, Cons & Final Verdict

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

Core i5-3450S

2012

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Xeon L5639 across 50 shared CPU benchmark tests.
❌Lower PassMark (4,399 vs 4,419).
❌Smaller total L3 cache (6 MB vs 12 MB).
❌Less compelling for workstation-style loads than Xeon L5639, which brings 6 cores / 12 threads.
❌Launch MSRP is still $174 MSRP, while Xeon L5639 mostly shows up through inconsistent older-market listings.

Xeon L5639

2011

Why buy it

✅Better for gaming: +10.5% 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: 6 cores / 12 threads.
✅Draws 60W instead of 65W, a 5W reduction.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Quick Answers

So, is Xeon L5639 better than Core i5-3450S?

Not really, because they are built for different jobs. Xeon L5639 makes more sense for workstation-style multi-core throughput, while Core i5-3450S 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 L5639 is the better pick. According to our tests, it delivers 10.5% 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 L5639 is the stronger fit. You are getting 0.5% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 100% larger total L3 cache (12 MB vs 6 MB).

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

Xeon L5639 is still the much better call for a fresh build. Xeon L5639 comes in at an unclear MSRP at unclear MSRP versus $174 MSRP, and it still gives you a 10.5% average FPS lead across 50 shared CPU game tests in our data. Core i5-3450S only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2012 platform. Even with 100.0% better value on paper (25.3 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1155.

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

Core i5-3450S makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 vs 2011). That makes it the safer long-term bet.

Core i5-3450S vs Xeon L5639 Technical Specifications

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

Core i5-3450S

The Core i5-3450S 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 2.8 GHz, with boost up to 3.5 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: 4,399 points. Launch price was $150.

Xeon L5639

The Xeon L5639 is manufactured by Intel. It was released in 2015-01-01. It is based on the Westmere-EP (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 2.133 GHz, with boost up to 2.67 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 60 Watt. Memory support: DDR3. Passmark benchmark score: 4,419 points. Launch price was $800.

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Processing Power

The Core i5-3450S packs 4 cores / 4 threads, while the Xeon L5639 offers 6 cores / 12 threads — the Xeon L5639 has 2 more cores. Boost clocks reach 3.5 GHz on the Core i5-3450S versus 2.67 GHz on the Xeon L5639 — a 26.9% clock advantage for the Core i5-3450S (base: 2.8 GHz vs 2.133 GHz). The Core i5-3450S uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Xeon L5639 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Core i5-3450S scores 4,399 against the Xeon L5639's 4,419 — a 0.5% lead for the Xeon L5639. L3 cache: 6144 kB (total) on the Core i5-3450S vs 12 MB (total) on the Xeon L5639.

Feature	Core i5-3450S	Xeon L5639
Cores / Threads	4 / 4	6 / 12+50%
Boost Clock	3.5 GHz+31%	2.67 GHz
Base Clock	2.8 GHz+31%	2.133 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	4,399	4,419

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Memory & Platform

The Core i5-3450S uses the LGA1155 socket (PCIe 3.0), while the Xeon L5639 uses LGA1366 (PCIe 4.0) — making them incompatible on the same motherboard.