Athlon 64 2800+ vs Sempron 3400+

Athlon 64 2800+ vs Sempron 3400+ Performance Spectrum

Athlon 64 2800+

1 / 1

420

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Sempron 3400+

1 / 1

433

+3.1%

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 2800+ vs Sempron 3400+ 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 2800+ vs Sempron 3400+: 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 2800+

2004

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Sempron 3400+ across 50 shared CPU benchmark tests.
❌Lower PassMark (420 vs 433).
❌Launch MSRP is still $178 MSRP, while Sempron 3400+ mostly shows up through inconsistent older-market listings.
❌43.5% higher power demand at 89W vs 62W.

Sempron 3400+

2005

Why buy it

✅Better for gaming: +9.6% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 62W instead of 89W, a 27W reduction.

Trade-offs

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

Quick Answers

So, is Sempron 3400+ better than Athlon 64 2800+?

Yes. Sempron 3400+ is the better all-around CPU here. It gives you a 9.6% average FPS lead across 50 shared CPU game tests in our data, 3.1% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Sempron 3400+ is the better pick. According to our tests, it delivers 9.6% 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, Sempron 3400+ is the stronger fit. You are getting 3.1% better PassMark, backed by 1 cores and 1 threads.

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

Sempron 3400+ is still the much better call for a fresh build. Sempron 3400+ comes in at an unclear MSRP at unclear MSRP versus $178 MSRP, and it still gives you a 9.6% average FPS lead across 50 shared CPU game tests in our data. Athlon 64 2800+ only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2004 platform. Even with 100.0% better value on paper (2.4 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on 754.

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

Sempron 3400+ makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2005 vs 2004) 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 2800+ vs Sempron 3400+ Technical Specifications

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

Athlon 64 2800+

The Athlon 64 2800+ is manufactured by AMD. It was released in Abril 2004 (21 years ago). It is based on the NewCastle (2004) architecture. It features 1 cores and 1 threads. Max frequency: 1.8 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: 754. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 420 points. Launch price was $100.

Sempron 3400+

The Sempron 3400+ 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: 128 kB. Built on 90 nm process technology. Socket: 939. Thermal design power (TDP): 62 Watt. Memory support: DDR1. Passmark benchmark score: 433 points. Launch price was $30.

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Processing Power

Both the Athlon 64 2800+ and Sempron 3400+ share an identical 1-core/1-thread configuration. Boost clocks reach 1.8 GHz on the Athlon 64 2800+ versus 2 GHz on the Sempron 3400+ — a 10.5% clock advantage for the Sempron 3400+. The Athlon 64 2800+ uses the NewCastle (2004) architecture (130 nm), while the Sempron 3400+ uses Palermo (2001−2005) (90 nm). In PassMark, the Athlon 64 2800+ scores 420 against the Sempron 3400+'s 433 — a 3% lead for the Sempron 3400+. Both processors carry 0 kB of L3 cache.

Feature	Athlon 64 2800+	Sempron 3400+
Cores / Threads	1 / 1	1 / 1
Boost Clock	1.8 GHz	2 GHz+11%
L3 Cache	0 kB	0 kB
L2 Cache	512 kB+300%	128 kB
Process	130 nm	90 nm-31%
Architecture	NewCastle (2004)	Palermo (2001−2005)
PassMark	420	433+3%

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Memory & Platform

The Athlon 64 2800+ uses the 754 socket (PCIe 1.1), while the Sempron 3400+ uses 939 (PCIe 2.0) — making them incompatible on the same motherboard.