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Athlon XP 1800+ vs Ryzen 9 5900X

CPUCPUGPUGPU
AMD

Athlon XP 1800+

1 Cores1 Thrd66 WWMax: 1.53 GHz2001
Similar parts
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VS
AMD

Ryzen 9 5900X

12 Cores24 Thrd105 WWMax: 4.8 GHz2020
Ryzen family
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Athlon XP 1800+ vs Ryzen 9 5900X Performance Spectrum

Athlon XP 1800+
1 / 1
225
0.0%
brand logoAthlon XP 1600+
brand logoRyzen 7 4700GE
brand logoRyzen Threadripper PRO 3955WX
brand logoRyzen Threadripper PRO 7955WX
brand logoRyzen Threadripper 3990X
brand logoRyzen Threadripper 7970X
brand logoRyzen Threadripper PRO 7985WX
brand logoRyzen Threadripper 7980X
Ryzen 9 5900X
12 / 24
38,955
+17213.3%
brand logoRyzen 7 PRO 250
brand logoRyzen 5 7645HX
brand logoRyzen 9 8945H
brand logoRyzen AI 9 HX 375
brand logoRyzen 9 7945HX
brand logoRyzen 9 9950X3D
brand logoRyzen Threadripper 9960X
brand logoRyzen Threadripper PRO 9975WX

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 1800+ vs Ryzen 9 5900X 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.

Path of Exile 2

Path of Exile 2

1080P
Athlon XP 1800+
low6 FPS
medium6 FPS
high6 FPS
ultra6 FPS
1080P
Ryzen 9 5900X
low323 FPS
medium291 FPS
high243 FPS
ultra193 FPS
Counter-Strike 2

Counter-Strike 2

1080P
Athlon XP 1800+
low6 FPS
medium6 FPS
high6 FPS
ultra6 FPS
1080P
Ryzen 9 5900X
low772 FPS
medium647 FPS
high508 FPS
ultra450 FPS
League of Legends

League of Legends

1080P
Athlon XP 1800+
low6 FPS
medium6 FPS
high6 FPS
ultra6 FPS
1080P
Ryzen 9 5900X
low832 FPS
medium645 FPS
high558 FPS
ultra459 FPS
Valorant

Valorant

1080P
Athlon XP 1800+
low6 FPS
medium6 FPS
high6 FPS
ultra6 FPS
1080P
Ryzen 9 5900X
low974 FPS
medium974 FPS
high934 FPS
ultra826 FPS
Among Us

Among Us

1080P
Athlon XP 1800+
low6 FPS
medium6 FPS
high6 FPS
ultra6 FPS
1080P
Ryzen 9 5900X
low60 FPS
medium60 FPS
high60 FPS
ultra60 FPS
Apex Legends

Apex Legends

1080P
Athlon XP 1800+
low6 FPS
medium6 FPS
high6 FPS
ultra6 FPS
1080P
Ryzen 9 5900X
low300 FPS
medium300 FPS
high300 FPS
ultra300 FPS
ARC Raiders

ARC Raiders

1080P
Athlon XP 1800+
low6 FPS
medium6 FPS
high6 FPS
ultra6 FPS
1080P
Ryzen 9 5900X
low309 FPS
medium238 FPS
high217 FPS
ultra194 FPS
Baldur's Gate 3

Baldur's Gate 3

1080P
Athlon XP 1800+
low6 FPS
medium6 FPS
high6 FPS
ultra6 FPS
1080P
Ryzen 9 5900X
low336 FPS
medium297 FPS
high235 FPS
ultra196 FPS
Call of Duty: Black Ops 6

Call of Duty: Black Ops 6

1080P
Athlon XP 1800+
low6 FPS
medium6 FPS
high6 FPS
ultra6 FPS
1080P
Ryzen 9 5900X
low355 FPS
medium306 FPS
high265 FPS
ultra225 FPS
Call of Duty: Warzone

Call of Duty: Warzone

1080P
Athlon XP 1800+
low6 FPS
medium6 FPS
high6 FPS
ultra6 FPS
1080P
Ryzen 9 5900X
low259 FPS
medium237 FPS
high200 FPS
ultra188 FPS
Check FPS with Custom Builds

Athlon XP 1800+ vs Ryzen 9 5900X: 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 1800+

2001

Why buy it

  • ✅Costs $297 less on MSRP ($252 MSRP vs $549 MSRP).
  • ✅Draws 66W instead of 105W, a 39W reduction.
  • ✅Includes a boxed cooler (Stock), unlike Ryzen 9 5900X.

Trade-offs

  • ❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
  • ❌Lower Geekbench multi-core (651 vs 11,888).
  • ❌Lower PassMark per dollar, at 0.9 vs 71.0 PassMark/$ ($252 MSRP vs $549 MSRP).

Ryzen 9 5900X

2020

Why buy it

  • ✅Better for gaming: +4473.0% higher average FPS across 50 shared CPU benchmark tests.
  • ✅Delivers 7847.1% more PassMark for each dollar spent, at 71.0 vs 0.9 PassMark/$ ($549 MSRP vs $252 MSRP).
  • ✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

  • ❌
    117.9% HIGHER MSRP
    $549 MSRPvs$252 MSRP
  • ❌59.1% higher power demand at 105W vs 66W.
  • ❌No boxed cooler included, unlike Athlon XP 1800+.

Quick Answers

So, is Ryzen 9 5900X better than Athlon XP 1800+?
Yes. Ryzen 9 5900X is the better all-around CPU here. It gives you a 4473.0% average FPS lead across 50 shared CPU game tests in our data, 1726.1% better Geekbench multi-core, 17213.3% higher 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 9 5900X is the better pick. According to our tests, it delivers 4473.0% 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, Ryzen 9 5900X is the stronger fit. You are getting 1726.1% better Geekbench multi-core, backed by 12 cores and 24 threads.
Which one is the smarter buy today, not just the cheaper CPU?
Ryzen 9 5900X is the better buy right now. Ryzen 9 5900X comes in 117.9% more expensive on MSRP at $549 MSRP versus $252 MSRP, and it still gives you a 4473.0% average FPS lead across 50 shared CPU game tests in our data. It is also 7847.1% better value on MSRP (71.0 vs 0.9 PassMark/$), 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 9 5900X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2001) and more multi-core headroom with 12 cores / 24 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 1800+ vs Ryzen 9 5900X Technical Specifications

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

AMD

Athlon XP 1800+

The Athlon XP 1800+ is manufactured by AMD. It was released in Janeiro 2001 (24 years ago). It is based on the Thoroughbred (2001−2002) architecture. It features 1 cores and 1 threads. Max frequency: 1.53 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 180 nm process technology. Socket: A. Thermal design power (TDP): 66 Watt. Passmark benchmark score: 225 points. Launch price was $59.

AMD

Ryzen 9 5900X

The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.

⚡

Processing Power

The Athlon XP 1800+ packs 1 cores / 1 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Ryzen 9 5900X has 11 more cores. Boost clocks reach 1.53 GHz on the Athlon XP 1800+ versus 4.8 GHz on the Ryzen 9 5900X — a 103.3% clock advantage for the Ryzen 9 5900X. The Athlon XP 1800+ uses the Thoroughbred (2001−2002) architecture (180 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Athlon XP 1800+ scores 225 against the Ryzen 9 5900X's 38,955 — a 197.7% lead for the Ryzen 9 5900X. Geekbench 6 single-core — the metric most relevant to gaming — records 180 vs 2,174, a 169.4% lead for the Ryzen 9 5900X that directly translates to higher frame rates. Multi-core Geekbench: 651 vs 11,888 (179.2% advantage for the Ryzen 9 5900X). L3 cache: 0 kB on the Athlon XP 1800+ vs 64 MB on the Ryzen 9 5900X.

FeatureAthlon XP 1800+Ryzen 9 5900X
Cores / Threads
1 / 1
12 / 24+1100%
Boost Clock
1.53 GHz
4.8 GHz+214%
Base Clock
—
3.7 GHz
L3 Cache
0 kB
64 MB
L2 Cache
256 kB
512K (per core)+100%
Process
180 nm
7 nm, 12 nm-96%
Architecture
Thoroughbred (2001−2002)
Vermeer (Zen3) (2020−2022)
PassMark
225
38,955+17213%
Cinebench R23 Multi
—
21,000
Geekbench 6 Single
180
2,174+1108%
Geekbench 6 Multi
651
11,888+1726%
🧠

Memory & Platform

The Athlon XP 1800+ uses the A socket (PCIe 1.1), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR1 on the Athlon XP 1800+ versus DDR4-3200 on the Ryzen 9 5900X — the Ryzen 9 5900X supports 319900% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 5900X supports up to 128 GB of RAM compared to 2 GB — 6300% more capacity for professional workloads. Memory channels: 1 (Athlon XP 1800+) vs 2 (Ryzen 9 5900X). Chipset compatibility: KT133,KT266,nForce2 (Athlon XP 1800+) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).

FeatureAthlon XP 1800+Ryzen 9 5900X
Socket
A
AM4
PCIe Generation
PCIe 1.1
PCIe 4.0+264%
Max RAM Speed
DDR1
DDR4-3200+319900%
Max RAM Capacity
2 GB
128 GB+6300%
RAM Channels
1
2+100%
ECC Support
No
Yes
PCIe Lanes
—
24
🔧

Advanced Features

Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: No (Athlon XP 1800+) vs AMD-V (Ryzen 9 5900X). Primary use case: Athlon XP 1800+ targets Budget, Ryzen 9 5900X targets Workstation. Direct competitor: Athlon XP 1800+ rivals Pentium D 830; Ryzen 9 5900X rivals Core i9-12900K.

FeatureAthlon XP 1800+Ryzen 9 5900X
Integrated GPU
No
No
Unlocked
No
Yes
AVX-512
No
No
Virtualization
No
AMD-V
Target Use
Budget
Workstation
💰

Value Analysis

At launch, the Athlon XP 1800+ was priced at $252, while the Ryzen 9 5900X came in at $549. On launch pricing ($252 vs $549), Athlon XP 1800+ was $297 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon XP 1800+ delivers 0.9 pts/$ vs 71.0 pts/$ for the Ryzen 9 5900X — making the Ryzen 9 5900X the 195% better value option.

FeatureAthlon XP 1800+Ryzen 9 5900X
MSRP
$252-54%
$549
Performance per Dollar
0.9
71.0+7789%
Release Date
2001
2020
Search Athlon XP 1800+ on AmazonSearch Ryzen 9 5900X on Amazon

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