Xeon L5609 vs Xeon X5570

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 L5609 vs Xeon X5570 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 L5609 vs Xeon X5570: Pros, Cons & Final Verdict

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

Xeon L5609

2010

Why buy it

✅+50% larger total L3 cache (12 MB vs 8 MB).
✅Draws 40W instead of 95W, a 55W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon X5570 across 50 shared CPU benchmark tests.
❌Lower PassMark (3,298 vs 3,306).
❌Launch MSRP is still $229 MSRP, while Xeon X5570 mostly shows up through inconsistent older-market listings.

Xeon X5570

2009

Why buy it

✅Better for gaming: +9.0% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Smaller total L3 cache (8 MB vs 12 MB).
❌137.5% higher power demand at 95W vs 40W.

Quick Answers

So, is Xeon X5570 better than Xeon L5609?

Yes. Xeon X5570 is the better all-around CPU here. It gives you a 9.0% average FPS lead across 50 shared CPU game tests in our data and 0.2% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Xeon X5570 is the better pick. According to our tests, it delivers 9.0% 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 X5570 is the stronger fit. You are getting 0.2% better PassMark, backed by 4 cores and 8 threads.

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

Xeon X5570 is still the faster CPU overall, but Xeon L5609 is easier to justify if budget matters more than peak performance. Xeon X5570 comes in at an unclear MSRP at unclear MSRP versus $229 MSRP, and it still gives you a 9.0% average FPS lead across 50 shared CPU game tests in our data. Xeon L5609 is also 100.0% better value on MSRP (14.4 vs 0.0 PassMark/$), 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 L5609 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2009) and 50% larger total L3 cache (12 MB vs 8 MB). That makes it the safer long-term bet.

Xeon L5609 vs Xeon X5570 Technical Specifications

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

Xeon L5609

The Xeon L5609 is manufactured by Intel. It was released in 2015-01-01. It is based on the Westmere-EP (2010−2011) architecture. It features 4 cores and 4 threads. Base frequency is 1.86 GHz, with boost up to 1.86 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 40 Watt. Memory support: DDR3. Passmark benchmark score: 3,298 points. Launch price was $800.

Xeon X5570

The Xeon X5570 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 2.93 GHz, with boost up to 3.33 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 45 nm process technology. Socket: LGA1366. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 3,306 points. Launch price was $49.

⚡

Processing Power

The Xeon L5609 packs 4 cores / 4 threads, matching the Xeon X5570's 4 cores. Boost clocks reach 1.86 GHz on the Xeon L5609 versus 3.33 GHz on the Xeon X5570 — a 56.6% clock advantage for the Xeon X5570 (base: 1.86 GHz vs 2.93 GHz). The Xeon L5609 uses the Westmere-EP (2010−2011) architecture (32 nm), while the Xeon X5570 uses Gainestown (2009−2010) (45 nm). In PassMark, the Xeon L5609 scores 3,298 against the Xeon X5570's 3,306 — a 0.2% lead for the Xeon X5570. L3 cache: 12 MB (total) on the Xeon L5609 vs 8 MB (total) on the Xeon X5570.

Feature	Xeon L5609	Xeon X5570
Cores / Threads	4 / 4	4 / 8
Boost Clock	1.86 GHz	3.33 GHz+79%
Base Clock	1.86 GHz	2.93 GHz+58%
L3 Cache	12 MB (total)+50%	8 MB (total)
L2 Cache	256 kB (per core)	256 kB (per core)
Process	32 nm-29%	45 nm
Architecture	Westmere-EP (2010−2011)	Gainestown (2009−2010)
PassMark	3,298	3,306

🧠

Memory & Platform

Both processors use the LGA1366 socket with PCIe 2.0.

Feature	Xeon L5609	Xeon X5570
Socket	LGA1366	LGA1366
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	—	DDR3-1333
RAM Channels	—	3
ECC Support	—	Yes

🔧

Advanced Features

Virtualization: not specified (Xeon L5609) / VT-x, VT-d, EPT (Xeon X5570). Primary use case: Xeon X5570 targets Workstation. Direct competitor: Xeon X5570 rivals Core i3-2100.