Pentium III 1400S vs Ryzen 7 7800X3D

CPU

GPU

Pentium III 1400S

1 Cores1 Thrd32 WWMax: 1.4 GHz2002

Similar parts

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Ryzen 7 7800X3D

8 Cores16 Thrd120 WWMax: 5 GHz2023

Ryzen family

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Pentium III 1400S vs Ryzen 7 7800X3D Performance Spectrum

Pentium III 1400S

1 / 1

228

0.0%

34,293

+14940.8%

Ryzen Threadripper PRO 7965WX

Ryzen Threadripper 7970X

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.

Pentium III 1400S vs Ryzen 7 7800X3D 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.

Pentium III 1400S vs Ryzen 7 7800X3D: Pros, Cons & Final Verdict

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

Pentium III 1400S

2002

Why buy it

✅Costs $199 less on MSRP ($250 MSRP vs $449 MSRP).
✅Draws 32W instead of 120W, a 88W reduction.
✅Includes a boxed cooler (Yes), unlike Ryzen 7 7800X3D.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 30 shared CPU benchmark tests.
❌Lower PassMark (228 vs 34,293).
❌Lower PassMark per dollar, at 0.9 vs 76.4 PassMark/$ ($250 MSRP vs $449 MSRP).
❌Older platform position on PGA370, while Ryzen 7 7800X3D moves to AM5 and DDR5.
❌No integrated graphics, while Ryzen 7 7800X3D can still boot and troubleshoot without a discrete GPU.

Ryzen 7 7800X3D

2023

Why buy it

✅Better for gaming: +5247.2% higher average FPS across 30 shared CPU benchmark tests.
✅Delivers 8274.6% more PassMark for each dollar spent, at 76.4 vs 0.9 PassMark/$ ($449 MSRP vs $250 MSRP).
✅Newer platform on AM5 with DDR5 support instead of PGA370 and older memory support.
✅100+% more PCIe lanes (28 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with AMD Radeon Graphics (2-core), while Pentium III 1400S needs a discrete GPU.

Trade-offs

❌
79.6% HIGHER MSRP
$449 MSRPvs$250 MSRP
❌275% higher power demand at 120W vs 32W.
❌No boxed cooler included, unlike Pentium III 1400S.

Quick Answers

So, is Ryzen 7 7800X3D better than Pentium III 1400S?

Yes. Ryzen 7 7800X3D is the better all-around CPU here. It gives you a 5247.2% average FPS lead across 30 shared CPU game tests in our data, 14940.8% 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, Ryzen 7 7800X3D is the better pick. According to our tests, it delivers 5247.2% more average FPS across 30 shared CPU game tests. It also has a clear cache advantage at 96 MB versus null.

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

For streaming, content creation, and heavier multitasking, Ryzen 7 7800X3D is the stronger fit. You are getting 14940.8% better PassMark, backed by 8 cores and 16 threads.

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

Ryzen 7 7800X3D is the better buy right now. Ryzen 7 7800X3D comes in 79.6% more expensive on MSRP at $449 MSRP versus $250 MSRP, and it still gives you a 5247.2% average FPS lead across 30 shared CPU game tests in our data. It is also 8274.6% better value on MSRP (76.4 vs 0.9 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Ryzen 7 7800X3D makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2002), a healthier platform with AM5 and DDR5 instead of PGA370, 3D V-Cache and a much larger 96 MB L3 cache instead of null, and more multi-core headroom with 8 cores / 16 threads instead of 1/1. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Pentium III 1400S vs Ryzen 7 7800X3D Technical Specifications

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

Pentium III 1400S

The Pentium III 1400S 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: 512 kB. Built on 130 nm process technology. Socket: PGA370. Thermal design power (TDP): 32 Watt. Passmark benchmark score: 228 points. Launch price was $69.

Ryzen 7 7800X3D

The Ryzen 7 7800X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 8 cores and 16 threads. Base frequency is 4.4 GHz, with boost up to 5 GHz. L3 cache: 96 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 34,293 points. Launch price was $449.

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Processing Power

The Pentium III 1400S packs 1 cores / 1 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Ryzen 7 7800X3D has 7 more cores. Boost clocks reach 1.4 GHz on the Pentium III 1400S versus 5 GHz on the Ryzen 7 7800X3D — a 112.5% clock advantage for the Ryzen 7 7800X3D. The Pentium III 1400S uses the Tualatin (2000−2002) architecture (130 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Pentium III 1400S scores 228 against the Ryzen 7 7800X3D's 34,293 — a 197.4% lead for the Ryzen 7 7800X3D. L3 cache: 0 kB on the Pentium III 1400S vs 96 MB (total) on the Ryzen 7 7800X3D.

Feature	Pentium III 1400S	Ryzen 7 7800X3D
Cores / Threads	1 / 1	8 / 16+700%
Boost Clock	1.4 GHz	5 GHz+257%
Base Clock	—	4.4 GHz
L3 Cache	0 kB	96 MB (total)
L2 Cache	512 kB	1 MB (per core)+100%
Process	130 nm	5 nm-96%
Architecture	Tualatin (2000−2002)	Raphael (Zen4) (2022−2023)
PassMark	228	34,293+14941%
Cinebench R23 Multi	—	18,500
Geekbench 6 Single	—	2,700
Geekbench 6 Multi	—	15,000

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Memory & Platform

The Pentium III 1400S uses the PGA370 socket (PCIe 1.1), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches PC133 on the Pentium III 1400S versus DDR5-5200 on the Ryzen 7 7800X3D — the Ryzen 7 7800X3D supports 3809.8% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 7800X3D supports up to 128 GB of RAM compared to 4 GB — 3100% more capacity for professional workloads. Memory channels: 1 (Pentium III 1400S) vs 2 (Ryzen 7 7800X3D). PCIe lanes: 0 (Pentium III 1400S) vs 28 (Ryzen 7 7800X3D) — the Ryzen 7 7800X3D offers 28 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel 815,VIA Apollo Pro 133T (Pentium III 1400S) and X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D).

Feature	Pentium III 1400S	Ryzen 7 7800X3D
Socket	PGA370	AM5
PCIe Generation	PCIe 1.1	PCIe 5.0+355%
Max RAM Speed	PC133	DDR5-5200+3810%
Max RAM Capacity	4 GB	128 GB+3100%
RAM Channels	1	2+100%
ECC Support	Yes	Yes
PCIe Lanes	0	28

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Advanced Features

Only the Ryzen 7 7800X3D supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: No (Pentium III 1400S) vs AMD-V (Ryzen 7 7800X3D). The Ryzen 7 7800X3D includes integrated graphics (AMD Radeon Graphics (2-core)), while the Pentium III 1400S requires a dedicated GPU. Primary use case: Ryzen 7 7800X3D targets Gaming. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K.

Feature	Pentium III 1400S	Ryzen 7 7800X3D
Integrated GPU	No	Yes
IGPU Model	—	AMD Radeon Graphics (2-core)
Unlocked	—	Yes
AVX-512	No	Yes
Virtualization	No	AMD-V
Target Use	—	Gaming

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Value Analysis

At launch, the Pentium III 1400S was priced at $250, while the Ryzen 7 7800X3D came in at $449. On launch pricing ($250 vs $449), Pentium III 1400S was $199 cheaper. In terms of value on MSRP (PassMark points per dollar), the Pentium III 1400S delivers 0.9 pts/$ vs 76.4 pts/$ for the Ryzen 7 7800X3D — making the Ryzen 7 7800X3D the 195.3% better value option.

Feature	Pentium III 1400S	Ryzen 7 7800X3D
MSRP	$250-44%	$449
Performance per Dollar	0.9	76.4+8389%
Release Date	2002	2023

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