Xeon L5430 vs Xeon L5520

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.

Xeon L5430 vs Xeon L5520 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.

Xeon L5430 vs Xeon L5520: Pros, Cons & Final Verdict

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

Xeon L5430

2008

Why buy it

✅+50% larger total L3 cache (12 MB vs 8 MB).
✅Draws 50W instead of 60W, a 10W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon L5520 across 49 shared CPU benchmark tests.
❌Lower PassMark (2,260 vs 2,274).
❌Launch MSRP is still $390 MSRP, while Xeon L5520 mostly shows up through inconsistent older-market listings.

Xeon L5520

2009

Why buy it

✅Better for gaming: +3.9% higher average FPS across 49 shared CPU benchmark tests.

Trade-offs

❌Smaller total L3 cache (8 MB vs 12 MB).
❌20% higher power demand at 60W vs 50W.

Quick Answers

So, is Xeon L5520 better than Xeon L5430?

Yes. Xeon L5520 is the better all-around CPU here. It gives you a 3.9% average FPS lead across 49 shared CPU game tests in our data, 0.6% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Xeon L5520 is the better pick. According to our tests, it delivers 3.9% more average FPS across 49 shared CPU game tests.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Xeon L5520 is the stronger fit. You are getting 0.6% better PassMark, backed by 4 cores and 8 threads.

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

Xeon L5520 is still the faster CPU overall, but Xeon L5430 is easier to justify if budget matters more than peak performance. Xeon L5520 comes in at an unclear MSRP at unclear MSRP versus $390 MSRP, and it still gives you a 3.9% average FPS lead across 49 shared CPU game tests in our data. Xeon L5430 is also 100.0% better value on MSRP (5.8 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Xeon L5520 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2008) and more multi-core headroom with 4 cores / 8 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Xeon L5430 vs Xeon L5520 Technical Specifications

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

Xeon L5430

The Xeon L5430 is manufactured by Intel. It was released in 8 September 2008 (17 years ago). It is based on the Harpertown (2007−2008) architecture. It features 4 cores and 4 threads. Base frequency is 2.66 GHz, with boost up to 0.67 GHz. L3 cache: 12 MB L2 Cache. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 50 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 2,260 points. Launch price was $562.

Xeon L5520

The Xeon L5520 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 2.26 GHz, with boost up to 2.48 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 45 nm process technology. Socket: LGA1366. Thermal design power (TDP): 60 Watt. Memory support: DDR3. Passmark benchmark score: 2,274 points. Launch price was $100.

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Processing Power

The Xeon L5430 packs 4 cores / 4 threads, matching the Xeon L5520's 4 cores. Boost clocks reach 0.67 GHz on the Xeon L5430 versus 2.48 GHz on the Xeon L5520 — a 114.9% clock advantage for the Xeon L5520 (base: 2.66 GHz vs 2.26 GHz). The Xeon L5430 uses the Harpertown (2007−2008) architecture (45 nm), while the Xeon L5520 uses Gainestown (2009−2010) (45 nm). In PassMark, the Xeon L5430 scores 2,260 against the Xeon L5520's 2,274 — a 0.6% lead for the Xeon L5520. L3 cache: 12 MB L2 Cache on the Xeon L5430 vs 8 MB (total) on the Xeon L5520.

Feature	Xeon L5430	Xeon L5520
Cores / Threads	4 / 4	4 / 8
Boost Clock	0.67 GHz	2.48 GHz+270%
Base Clock	2.66 GHz+18%	2.26 GHz
L3 Cache	12 MB L2 Cache+50%	8 MB (total)
L2 Cache	6 MB (total)+2300%	256 kB (per core)
Process	45 nm	45 nm
Architecture	Harpertown (2007−2008)	Gainestown (2009−2010)
PassMark	2,260	2,274

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Memory & Platform

The Xeon L5430 uses the LGA771 socket (PCIe 2.0), while the Xeon L5520 uses LGA1366 (PCIe 2.0) — making them incompatible on the same motherboard.