Sempron 3850 vs Xeon W3505

Sempron 3850 vs Xeon W3505 Performance Spectrum

Sempron 3850

4 / 4

1,168

+0.4%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Xeon W3505

2 / 2

1,163

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.

Sempron 3850 vs Xeon W3505 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.

Sempron 3850 vs Xeon W3505: Pros, Cons & Final Verdict

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

Sempron 3850

2014

Why buy it

✅Draws 25W instead of 130W, a 105W reduction.

Trade-offs

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

Xeon W3505

2009

Why buy it

Trade-offs

❌Lower PassMark (1,163 vs 1,168).
❌420% higher power demand at 130W vs 25W.

Quick Answers

So, is Sempron 3850 better than Xeon W3505?

Not really, because they are built for different jobs. Xeon W3505 makes more sense for workstation-style multi-core throughput, while Sempron 3850 is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Sempron 3850 is the better pick. According to our tests, it delivers 2.2% more average FPS across 47 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Sempron 3850 is the stronger fit. You are getting 0.4% better PassMark, backed by 4 cores and 4 threads.

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

Sempron 3850 still makes the most sense overall. Sempron 3850 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 2.2% average FPS lead across 47 shared CPU game tests in our data.

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

Sempron 3850 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2009) and more multi-core headroom with 4 cores / 4 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Sempron 3850 vs Xeon W3505 Technical Specifications

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

Sempron 3850

The Sempron 3850 is manufactured by AMD. It was released in 2007-01-01. It is based on the Kabini (2013−2014) architecture. It features 4 cores and 4 threads. Max frequency: 1.3 GHz. L2 cache: 2048 kB. Built on 28 nm process technology. Socket: AM1. Thermal design power (TDP): 25 Watt. Memory support: DDR3-1600. Passmark benchmark score: 1,168 points. Launch price was $69.

Xeon W3505

The Xeon W3505 is manufactured by Intel. It was released in 2015-01-01. It is based on the Bloomfield (2008−2010) architecture. It features 2 cores and 2 threads. Base frequency is 2.53 GHz, with boost up to 0.53 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 45 nm process technology. Socket: LGA1366. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 1,163 points. Launch price was $800.

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Processing Power

The Sempron 3850 packs 4 cores / 4 threads, while the Xeon W3505 offers 2 cores / 2 threads — the Sempron 3850 has 2 more cores. Boost clocks reach 1.3 GHz on the Sempron 3850 versus 0.53 GHz on the Xeon W3505 — a 84.2% clock advantage for the Sempron 3850. The Sempron 3850 uses the Kabini (2013−2014) architecture (28 nm), while the Xeon W3505 uses Bloomfield (2008−2010) (45 nm). In PassMark, the Sempron 3850 scores 1,168 against the Xeon W3505's 1,163 — a 0.4% lead for the Sempron 3850.

Feature	Sempron 3850	Xeon W3505
Cores / Threads	4 / 4+100%	2 / 2
Boost Clock	1.3 GHz+145%	0.53 GHz
Base Clock	—	2.53 GHz
L3 Cache	—	4 MB (total)
L2 Cache	2048 kB+700%	256 kB (per core)
Process	28 nm-38%	45 nm
Architecture	Kabini (2013−2014)	Bloomfield (2008−2010)
PassMark	1,168	1,163

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Memory & Platform

The Sempron 3850 uses the AM1 socket (PCIe 2.0), while the Xeon W3505 uses LGA1366 (PCIe 2.0) — making them incompatible on the same motherboard.