Athlon 64 3100+ vs Sempron 3500+

Athlon 64 3100+ vs Sempron 3500+ Performance Spectrum

Athlon 64 3100+

1 / 1

475

+2.2%

Athlon XP 2100+

Athlon XP 2400+

Athlon XP 2700+

Mobile Athlon 64 2800+

Ryzen 5 8640HS

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Sempron 3500+

1 / 1

465

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

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.

Athlon 64 3100+ vs Sempron 3500+ 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.

Athlon 64 3100+ vs Sempron 3500+: Pros, Cons & Final Verdict

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

Athlon 64 3100+

2008

Why buy it

✅+2.2% higher PassMark.
✅Draws 25W instead of 62W, a 37W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Launch MSRP is still $100 MSRP, while Sempron 3500+ mostly shows up through inconsistent older-market listings.

Sempron 3500+

2005

Why buy it

Trade-offs

❌Lower PassMark (465 vs 475).
❌148% higher power demand at 62W vs 25W.

Quick Answers

So, is Athlon 64 3100+ better than Sempron 3500+?

Yes. Athlon 64 3100+ is the better all-around CPU here. It gives you a 0.2% average FPS lead across 43 shared CPU game tests in our data, 2.2% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

For gaming, this matchup is basically a tie in the data we have.

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

For streaming, content creation, and heavier multitasking, Athlon 64 3100+ is the stronger fit. You are getting 2.2% better PassMark, backed by 1 cores and 1 threads.

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

Athlon 64 3100+ is the better buy right now. Athlon 64 3100+ comes in at an unclear MSRP at $100 MSRP versus unclear MSRP, and it still gives you a 0.2% average FPS lead across 43 shared CPU game tests in our data. It is also 100.0% better value on MSRP (4.8 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Athlon 64 3100+ makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2008 vs 2005) and more multi-core headroom with 1 cores / 1 threads instead of 1/1. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon 64 3100+ vs Sempron 3500+ Technical Specifications

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

Athlon 64 3100+

The Athlon 64 3100+ is manufactured by AMD. It was released in 2009-01-01. It is based on the Lima (2008−2009) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L2 cache: 512K. Built on 65 nm process technology. Socket: AM2. Thermal design power (TDP): 25 Watt. Memory support: DDR2. Passmark benchmark score: 475 points. Launch price was $149.

Sempron 3500+

The Sempron 3500+ is manufactured by AMD. It was released in 1 October 2005 (20 years ago). It is based on the Palermo (2001−2005) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 90 nm process technology. Socket: 939. Thermal design power (TDP): 62 Watt. Memory support: DDR1. Passmark benchmark score: 465 points. Launch price was $167.

⚡

Processing Power

Both the Athlon 64 3100+ and Sempron 3500+ share an identical 1-core/1-thread configuration. Boost clocks reach 2 GHz on the Athlon 64 3100+ versus 2 GHz on the Sempron 3500+ — identical boost frequencies. The Athlon 64 3100+ uses the Lima (2008−2009) architecture (65 nm), while the Sempron 3500+ uses Palermo (2001−2005) (90 nm). In PassMark, the Athlon 64 3100+ scores 475 against the Sempron 3500+'s 465 — a 2.1% lead for the Athlon 64 3100+.

Feature	Athlon 64 3100+	Sempron 3500+
Cores / Threads	1 / 1	1 / 1
Boost Clock	2 GHz	2 GHz
L3 Cache	—	0 kB
L2 Cache	512K+100%	256 kB
Process	65 nm-28%	90 nm
Architecture	Lima (2008−2009)	Palermo (2001−2005)
PassMark	475+2%	465
Geekbench 6 Single	280	—
Geekbench 6 Multi	280	—

🧠

Memory & Platform

The Athlon 64 3100+ uses the AM2 socket (PCIe 2.0), while the Sempron 3500+ uses 939 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Athlon 64 3100+	Sempron 3500+
Socket	AM2	939
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR2-800	—
Max RAM Capacity	4 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: AMD-V (Athlon 64 3100+) / not specified (Sempron 3500+). Primary use case: Athlon 64 3100+ targets Legacy Desktop. Direct competitor: Athlon 64 3100+ rivals Celeron D 352.