Athlon XP 1900+ vs Pentium III 1400

Athlon XP 1900+ vs Pentium III 1400 Performance Spectrum

Athlon XP 1900+

1 / 1

238

+4.4%

Athlon XP 1600+

Ryzen 7 4700GE

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Ryzen Threadripper 7970X

Ryzen Threadripper PRO 7985WX

Ryzen Threadripper 7980X

Pentium III 1400

1 / 1

228

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 1900+ vs Pentium III 1400 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 1900+ vs Pentium III 1400: 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 1900+

2001

Why buy it

Trade-offs

❌
7.6% HIGHER MSRP
$269 MSRPvs$250 MSRP
❌119.4% higher power demand at 68W vs 31W.

Pentium III 1400

2001

Why buy it

✅Costs $19 less on MSRP ($250 MSRP vs $269 MSRP).
✅Draws 31W instead of 68W, a 37W reduction.

Trade-offs

❌Lower PassMark (228 vs 238).

Quick Answers

So, is Athlon XP 1900+ better than Pentium III 1400?

Yes. Athlon XP 1900+ is the better all-around CPU here. It gives you 4.4% 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 1900+ has the edge because it leads the single-thread side of this matchup with 14.3% higher max boost clock.

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

For streaming, content creation, and heavier multitasking, Athlon XP 1900+ is the stronger fit. You are getting 4.4% better PassMark, backed by 1 cores and 1 threads.

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

Athlon XP 1900+ is still the much better call for a fresh build. Athlon XP 1900+ comes in 7.6% more expensive on MSRP at $269 MSRP versus $250 MSRP, and it still gives you 4.4% higher PassMark. Pentium III 1400 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2001 platform. Even with 3.1% better value on paper (0.9 vs 0.9 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on PGA370.

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

Athlon XP 1900+ 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 1900+ vs Pentium III 1400 Technical Specifications

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

Athlon XP 1900+

The Athlon XP 1900+ is manufactured by AMD. It was released in 2009-01-01. It is based on the Thoroughbred (2001−2002) architecture. It features 1 cores and 1 threads. Max frequency: 1.6 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 180 nm process technology. Socket: A. Thermal design power (TDP): 68 Watt. Passmark benchmark score: 238 points. Launch price was $149.

Pentium III 1400

The Pentium III 1400 is manufactured by Intel. It was released in 2007-01-01. It is based on the Tualatin (2000−2002) architecture. It features 1 cores and 1 threads. Max frequency: 1.4 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 130 nm process technology. Socket: PGA370. Thermal design power (TDP): 31 Watt. Passmark benchmark score: 228 points. Launch price was $69.

⚡

Processing Power

Both the Athlon XP 1900+ and Pentium III 1400 share an identical 1-core/1-thread configuration. Boost clocks reach 1.6 GHz on the Athlon XP 1900+ versus 1.4 GHz on the Pentium III 1400 — a 13.3% clock advantage for the Athlon XP 1900+. The Athlon XP 1900+ uses the Thoroughbred (2001−2002) architecture (180 nm), while the Pentium III 1400 uses Tualatin (2000−2002) (130 nm). In PassMark, the Athlon XP 1900+ scores 238 against the Pentium III 1400's 228 — a 4.3% lead for the Athlon XP 1900+. Both processors carry 0 kB of L3 cache.

Feature	Athlon XP 1900+	Pentium III 1400
Cores / Threads	1 / 1	1 / 1
Boost Clock	1.6 GHz+14%	1.4 GHz
L3 Cache	0 kB	0 kB
L2 Cache	256 kB	256 kB
Process	180 nm	130 nm-28%
Architecture	Thoroughbred (2001−2002)	Tualatin (2000−2002)
PassMark	238+4%	228

🧠

Memory & Platform

The Athlon XP 1900+ uses the A socket (PCIe 1.1), while the Pentium III 1400 uses PGA370 (PCIe 1.1) — making them incompatible on the same motherboard.

Feature	Athlon XP 1900+	Pentium III 1400
Socket	A	PGA370
PCIe Generation	PCIe 1.1	PCIe 1.1
Max RAM Speed	DDR-266	—
Max RAM Capacity	4 GB	—
RAM Channels	1	—
ECC Support	Yes	—
PCIe Lanes	0	—

💰

Value Analysis

At launch, the Athlon XP 1900+ was priced at $269, while the Pentium III 1400 came in at $250. On launch pricing ($269 vs $250), Pentium III 1400 was $19 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon XP 1900+ delivers 0.9 pts/$ vs 0.9 pts/$ for the Pentium III 1400 — making the Pentium III 1400 the 3% better value option.

Feature	Athlon XP 1900+	Pentium III 1400
MSRP	$269	$250-7%
Performance per Dollar	0.9	0.9
Release Date	2001	2001

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