Athlon XP 3100+ vs Pentium 4 2.80

Athlon XP 3100+ vs Pentium 4 2.80 Performance Spectrum

Athlon XP 3100+

1 / 1

425

+4.2%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Pentium 4 2.80

1 / 1

408

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.

Athlon XP 3100+ vs Pentium 4 2.80 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 XP 3100+ vs Pentium 4 2.80: Pros, Cons & Final Verdict

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

Athlon XP 3100+

2003

Why buy it

✅Better for gaming: +9.6% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $177 less on MSRP ($150 MSRP vs $327 MSRP).
✅Delivers 127.1% more PassMark for each dollar spent, at 2.8 vs 1.2 PassMark/$ ($150 MSRP vs $327 MSRP).
✅Draws 68W instead of 110W, a 42W reduction.

Trade-offs

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

Pentium 4 2.80

2002

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Athlon XP 3100+ across 50 shared CPU benchmark tests.
❌Lower PassMark (408 vs 425).
❌Lower PassMark per dollar, at 1.2 vs 2.8 PassMark/$ ($327 MSRP vs $150 MSRP).
❌61.8% higher power demand at 110W vs 68W.

Quick Answers

So, is Athlon XP 3100+ better than Pentium 4 2.80?

Yes. Athlon XP 3100+ 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, 4.2% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Athlon XP 3100+ 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, Athlon XP 3100+ is the stronger fit. You are getting 4.2% better PassMark, backed by 1 cores and 1 threads.

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

Athlon XP 3100+ is the better buy right now. Athlon XP 3100+ comes in $177 cheaper on MSRP at $150 MSRP versus $327 MSRP, and it still gives you a 9.6% average FPS lead across 50 shared CPU game tests in our data. It is also 127.1% better value on MSRP (2.8 vs 1.2 PassMark/$), 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 XP 3100+ makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2003 vs 2002) 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 XP 3100+ vs Pentium 4 2.80 Technical Specifications

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

Athlon XP 3100+

The Athlon XP 3100+ is manufactured by AMD. It was released in 2009-01-01. It is based on the Thorton (2001−2003) architecture. It features 1 cores and 1 threads. Max frequency: 2.2 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 130 nm process technology. Socket: A. Thermal design power (TDP): 68 Watt. Passmark benchmark score: 425 points. Launch price was $149.

Pentium 4 2.80

The Pentium 4 2.80 is manufactured by Intel. It was released in 2007-01-01. It is based on the NetBurst (2000−2006) architecture. It features 1 cores and 1 threads. Max frequency: 2.79 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: PGA478. Thermal design power (TDP): 110 Watt. Memory support: DDR1, DDR2. Passmark benchmark score: 408 points. Launch price was $69.

⚡

Processing Power

Both the Athlon XP 3100+ and Pentium 4 2.80 share an identical 1-core/1-thread configuration. Boost clocks reach 2.2 GHz on the Athlon XP 3100+ versus 2.79 GHz on the Pentium 4 2.80 — a 23.6% clock advantage for the Pentium 4 2.80. The Athlon XP 3100+ uses the Thorton (2001−2003) architecture (130 nm), while the Pentium 4 2.80 uses NetBurst (2000−2006) (130 nm). In PassMark, the Athlon XP 3100+ scores 425 against the Pentium 4 2.80's 408 — a 4.1% lead for the Athlon XP 3100+. Both processors carry 0 kB of L3 cache.

Feature	Athlon XP 3100+	Pentium 4 2.80
Cores / Threads	1 / 1	1 / 1
Boost Clock	2.2 GHz	2.79 GHz+27%
L3 Cache	0 kB	0 kB
L2 Cache	256 kB	512 kB+100%
Process	130 nm	130 nm
Architecture	Thorton (2001−2003)	NetBurst (2000−2006)
PassMark	425+4%	408

🧠

Memory & Platform

The Athlon XP 3100+ uses the A socket (PCIe 1.1), while the Pentium 4 2.80 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.

Feature	Athlon XP 3100+	Pentium 4 2.80
Socket	A	PGA478
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	DDR-333	—
Max RAM Capacity	4 GB	—
RAM Channels	1	—
ECC Support	No	—
PCIe Lanes	0	—

💰

Value Analysis

At launch, the Athlon XP 3100+ was priced at $150, while the Pentium 4 2.80 came in at $327. On launch pricing ($150 vs $327), Athlon XP 3100+ was $177 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon XP 3100+ delivers 2.8 pts/$ vs 1.2 pts/$ for the Pentium 4 2.80 — making the Athlon XP 3100+ the 77.7% better value option.

Feature	Athlon XP 3100+	Pentium 4 2.80
MSRP	$150-54%	$327
Performance per Dollar	2.8+133%	1.2
Release Date	2003	2002

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