Athlon XP 3100+ vs Celeron 2.80

Athlon XP 3100+ vs Celeron 2.80 Performance Spectrum

Athlon XP 3100+

1 / 1

425

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Celeron 2.80

1 / 1

428

+0.7%

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 Celeron 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 Celeron 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

✅Draws 68W instead of 73W, a 5W reduction.

Trade-offs

❌Lower PassMark (425 vs 428).
❌Lower PassMark per dollar, at 2.8 vs 4.3 PassMark/$ ($150 MSRP vs $100 MSRP).

Celeron 2.80

2003

Why buy it

✅Costs $50 less on MSRP ($100 MSRP vs $150 MSRP).
✅Delivers 51.1% more PassMark for each dollar spent, at 4.3 vs 2.8 PassMark/$ ($100 MSRP vs $150 MSRP).

Trade-offs

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

Quick Answers

So, is Celeron 2.80 better than Athlon XP 3100+?

Yes. Celeron 2.80 is the better all-around CPU here. It gives you a 0.2% average FPS lead across 50 shared CPU game tests in our data, 0.7% 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, Celeron 2.80 is the better pick. According to our tests, it delivers 0.2% 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, Celeron 2.80 is the stronger fit. You are getting 0.7% better PassMark, backed by 1 cores and 1 threads.

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

Celeron 2.80 is the better buy right now. Celeron 2.80 comes in $50 cheaper on MSRP at $100 MSRP versus $150 MSRP, and it still gives you a 0.2% average FPS lead across 50 shared CPU game tests in our data. It is also 51.1% better value on MSRP (4.3 vs 2.8 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Celeron 2.80 makes more sense long term for 2026 and beyond. You are getting 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 Celeron 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.

Celeron 2.80

The Celeron 2.80 is manufactured by Intel. It was released in 2007-01-01. It is based on the Northwood (2002−2004) architecture. It features 1 cores and 1 threads. Max frequency: 2.8 GHz. L3 cache: 0 kB. L2 cache: 128 kB. Built on 130 nm process technology. Socket: PGA478. Thermal design power (TDP): 73 Watt. Memory support: DDR1, DDR2. Passmark benchmark score: 428 points. Launch price was $69.

⚡

Processing Power

Both the Athlon XP 3100+ and Celeron 2.80 share an identical 1-core/1-thread configuration. Boost clocks reach 2.2 GHz on the Athlon XP 3100+ versus 2.8 GHz on the Celeron 2.80 — a 24% clock advantage for the Celeron 2.80. The Athlon XP 3100+ uses the Thorton (2001−2003) architecture (130 nm), while the Celeron 2.80 uses Northwood (2002−2004) (130 nm). In PassMark, the Athlon XP 3100+ scores 425 against the Celeron 2.80's 428 — a 0.7% lead for the Celeron 2.80. Both processors carry 0 kB of L3 cache.

Feature	Athlon XP 3100+	Celeron 2.80
Cores / Threads	1 / 1	1 / 1
Boost Clock	2.2 GHz	2.8 GHz+27%
L3 Cache	0 kB	0 kB
L2 Cache	256 kB+100%	128 kB
Process	130 nm	130 nm
Architecture	Thorton (2001−2003)	Northwood (2002−2004)
PassMark	425	428

🧠

Memory & Platform

The Athlon XP 3100+ uses the A socket (PCIe 1.1), while the Celeron 2.80 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR-333 on the Athlon XP 3100+ versus DDR1-400 on the Celeron 2.80 — the Celeron 2.80 supports -220.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 4 GB of RAM. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: AMD Socket A (Athlon XP 3100+) and 845,848,865,875 (Celeron 2.80).

Feature	Athlon XP 3100+	Celeron 2.80
Socket	A	PGA478
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	DDR-333	DDR1-400
Max RAM Capacity	4 GB	4 GB
RAM Channels	1	1
ECC Support	No	No
PCIe Lanes	0	0

🔧

Advanced Features

Virtualization: not specified (Athlon XP 3100+) / No (Celeron 2.80). Primary use case: Celeron 2.80 targets Budget. Direct competitor: Celeron 2.80 rivals Pentium 4 2.80.

Feature	Athlon XP 3100+	Celeron 2.80
Integrated GPU	No	No
Unlocked	—	No
AVX-512	—	No
Virtualization	—	No
Target Use	—	Budget

💰

Value Analysis

At launch, the Athlon XP 3100+ was priced at $150, while the Celeron 2.80 came in at $100. On launch pricing ($150 vs $100), Celeron 2.80 was $50 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon XP 3100+ delivers 2.8 pts/$ vs 4.3 pts/$ for the Celeron 2.80 — making the Celeron 2.80 the 40.7% better value option.

Feature	Athlon XP 3100+	Celeron 2.80
MSRP	$150	$100-33%
Performance per Dollar	2.8	4.3+54%
Release Date	2003	2003

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