Phenom II X3 P820 vs Xeon 5150

Phenom II X3 P820 vs Xeon 5150 Performance Spectrum

Phenom II X3 P820

3 / 3

1,560

+0.3%

Ryzen Threadripper PRO 5945WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Xeon 5150

2 / 2

1,555

0.0%

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.

Phenom II X3 P820 vs Xeon 5150 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.

Phenom II X3 P820 vs Xeon 5150: Pros, Cons & Final Verdict

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

Phenom II X3 P820

2010

Why buy it

✅+0.3% higher PassMark.
✅Draws 2W instead of 65W, a 64W reduction.

Trade-offs

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

Xeon 5150

2006

Why buy it

Trade-offs

❌Lower PassMark (1,555 vs 1,560).
❌4233.3% higher power demand at 65W vs 1.5W.

Quick Answers

So, is Phenom II X3 P820 better than Xeon 5150?

Not really, because they are built for different jobs. Xeon 5150 makes more sense for workstation-style multi-core throughput, while Phenom II X3 P820 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, Phenom II X3 P820 is the stronger fit. You are getting 0.3% better PassMark, backed by 3 cores and 3 threads.

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

Phenom II X3 P820 still makes the most sense overall. Phenom II X3 P820 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 0.3% better PassMark.

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

Phenom II X3 P820 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2006) and more multi-core headroom with 3 cores / 3 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Phenom II X3 P820 vs Xeon 5150 Technical Specifications

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

Phenom II X3 P820

The Phenom II X3 P820 is manufactured by AMD. It was released in 2009-01-01. It is based on the Champlain (2010−2011) architecture. It features 3 cores and 3 threads. Max frequency: 1.8 GHz. L2 cache: 1.5 MB. Built on 45 nm process technology. Socket: S1. Thermal design power (TDP): 1.5 MB. Memory support: DDR3. Passmark benchmark score: 1,560 points. Launch price was $149.

Xeon 5150

The Xeon 5150 is manufactured by Intel. It was released in Junho 2006 (19 years ago). It is based on the Woodcrest (2006) architecture. It features 2 cores and 2 threads. Base frequency is 2.66 GHz, with boost up to 2.67 GHz. L3 cache: 0 kB. L2 cache: 4 MB. Built on 65 nm process technology. Socket: LGA771. Thermal design power (TDP): 65 Watt. Memory support: DDR2. Passmark benchmark score: 1,555 points. Launch price was $16.

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Processing Power

The Phenom II X3 P820 packs 3 cores / 3 threads, while the Xeon 5150 offers 2 cores / 2 threads — the Phenom II X3 P820 has 1 more core. Boost clocks reach 1.8 GHz on the Phenom II X3 P820 versus 2.67 GHz on the Xeon 5150 — a 38.9% clock advantage for the Xeon 5150. The Phenom II X3 P820 uses the Champlain (2010−2011) architecture (45 nm), while the Xeon 5150 uses Woodcrest (2006) (65 nm). In PassMark, the Phenom II X3 P820 scores 1,560 against the Xeon 5150's 1,555 — a 0.3% lead for the Phenom II X3 P820.

Feature	Phenom II X3 P820	Xeon 5150
Cores / Threads	3 / 3+50%	2 / 2
Boost Clock	1.8 GHz	2.67 GHz+48%
Base Clock	—	2.66 GHz
L3 Cache	—	0 kB
L2 Cache	1.5 MB	4 MB+167%
Process	45 nm-31%	65 nm
Architecture	Champlain (2010−2011)	Woodcrest (2006)
PassMark	1,560	1,555

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Memory & Platform

The Phenom II X3 P820 uses the S1 socket (PCIe 2.0), while the Xeon 5150 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.