Turion II Ultra M660 vs Xeon L5520

Turion II Ultra M660 vs Xeon L5520 Performance Spectrum

Turion II Ultra M660

2 / 2

2,278

+0.2%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Xeon L5520

4 / 8

2,274

0.0%

Celeron 847

Core i3-530

Pentium Dual Core T2390

About PassMark

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.

Turion II Ultra M660 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.

Turion II Ultra M660 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.

Turion II Ultra M660

2009

Why buy it

✅+0.2% higher PassMark.
✅Draws 2W instead of 60W, a 58W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon L5520 across 50 shared CPU benchmark tests.
❌Less compelling for workstation-style loads than Xeon L5520, which brings 4 cores / 8 threads.

Xeon L5520

2009

Why buy it

✅Better for gaming: +3.2% higher average FPS across 50 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 4 cores / 8 threads.

Trade-offs

❌Lower PassMark (2,274 vs 2,278).
❌2900% higher power demand at 60W vs 2W.

Quick Answers

So, is Turion II Ultra M660 better than Xeon L5520?

Not really, because they are built for different jobs. Xeon L5520 makes more sense for workstation-style multi-core throughput, while Turion II Ultra M660 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, Turion II Ultra M660 is the stronger fit. You are getting 0.2% better PassMark, backed by 2 cores and 2 threads.

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

Turion II Ultra M660 still makes the most sense overall. Turion II Ultra M660 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 0.2% better PassMark.

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

Xeon L5520 is the safer long-term CPU choice because it gives you more room to grow and a better platform outlook.

Turion II Ultra M660 vs Xeon L5520 Technical Specifications

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

Turion II Ultra M660

The Turion II Ultra M660 is manufactured by AMD. It was released in 2007-01-01. It is based on the Caspian (2009) architecture. It features 2 cores and 2 threads. Max frequency: 2.7 GHz. L2 cache: 2 MB. Built on 45 nm process technology. Socket: S1g3. Thermal design power (TDP): 2 MB. Memory support: DDR2. Passmark benchmark score: 2,278 points. Launch price was $69.

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 Turion II Ultra M660 packs 2 cores / 2 threads, while the Xeon L5520 offers 4 cores / 8 threads — the Xeon L5520 has 2 more cores. Boost clocks reach 2.7 GHz on the Turion II Ultra M660 versus 2.48 GHz on the Xeon L5520 — a 8.5% clock advantage for the Turion II Ultra M660. The Turion II Ultra M660 uses the Caspian (2009) architecture (45 nm), while the Xeon L5520 uses Gainestown (2009−2010) (45 nm). In PassMark, the Turion II Ultra M660 scores 2,278 against the Xeon L5520's 2,274 — a 0.2% lead for the Turion II Ultra M660.

Feature	Turion II Ultra M660	Xeon L5520
Cores / Threads	2 / 2	4 / 8+100%
Boost Clock	2.7 GHz+9%	2.48 GHz
Base Clock	—	2.26 GHz
L3 Cache	—	8 MB (total)
L2 Cache	2 MB+700%	256 kB (per core)
Process	45 nm	45 nm
Architecture	Caspian (2009)	Gainestown (2009−2010)
PassMark	2,278	2,274

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Memory & Platform

The Turion II Ultra M660 uses the S1g3 socket (PCIe 2.0), while the Xeon L5520 uses LGA1366 (PCIe 2.0) — making them incompatible on the same motherboard.