Athlon X4 870K vs Ryzen 9 5900X

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 X4 870K 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.

Athlon X4 870K 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 X4 870K

2015

Why buy it

✅Costs $459 less on MSRP ($90 MSRP vs $549 MSRP).

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower PassMark (3,443 vs 38,955).
❌Lower PassMark per dollar, at 38.3 vs 71.0 PassMark/$ ($90 MSRP vs $549 MSRP).

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +252.0% higher average FPS across 50 shared CPU benchmark tests.
✅Delivers 85.5% more PassMark for each dollar spent, at 71.0 vs 38.3 PassMark/$ ($549 MSRP vs $90 MSRP).
✅50% more PCIe lanes (24 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌
510% HIGHER MSRP
$549 MSRPvs$90 MSRP

Quick Answers

So, is Ryzen 9 5900X better than Athlon X4 870K?

Yes. Ryzen 9 5900X is the better all-around CPU here. It gives you a 252.0% average FPS lead across 50 shared CPU game tests in our data, 1031.4% 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, Ryzen 9 5900X is the better pick. According to our tests, it delivers 252.0% 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 1031.4% better PassMark, 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 510.0% more expensive on MSRP at $549 MSRP versus $90 MSRP, and it still gives you a 252.0% average FPS lead across 50 shared CPU game tests in our data. It is also 85.5% better value on MSRP (71.0 vs 38.3 PassMark/$), 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 2015) and more multi-core headroom with 12 cores / 24 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon X4 870K vs Ryzen 9 5900X Technical Specifications

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

Athlon X4 870K

The Athlon X4 870K is manufactured by AMD. It was released in 2009-01-01. It is based on the Godaveri (2014−2016) architecture. It features 4 cores and 4 threads. Base frequency is 3.9 GHz, with boost up to 4.1 GHz. L2 cache: 4 MB. Built on 28 nm process technology. Socket: FM2+. Thermal design power (TDP): 95 Watt. Memory support: DDR3-2133. Passmark benchmark score: 3,443 points. Launch price was $149.

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.

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Processing Power

The Athlon X4 870K packs 4 cores / 4 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Ryzen 9 5900X has 8 more cores. Boost clocks reach 4.1 GHz on the Athlon X4 870K versus 4.8 GHz on the Ryzen 9 5900X — a 15.7% clock advantage for the Ryzen 9 5900X (base: 3.9 GHz vs 3.7 GHz). The Athlon X4 870K uses the Godaveri (2014−2016) architecture (28 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Athlon X4 870K scores 3,443 against the Ryzen 9 5900X's 38,955 — a 167.5% lead for the Ryzen 9 5900X.

Feature	Athlon X4 870K	Ryzen 9 5900X
Cores / Threads	4 / 4	12 / 24+200%
Boost Clock	4.1 GHz	4.8 GHz+17%
Base Clock	3.9 GHz+5%	3.7 GHz
L3 Cache	—	64 MB
L2 Cache	4 MB	512K (per core)+12700%
Process	28 nm	7 nm, 12 nm-75%
Architecture	Godaveri (2014−2016)	Vermeer (Zen3) (2020−2022)
PassMark	3,443	38,955+1031%
Cinebench R23 Multi	—	21,000
Geekbench 6 Single	—	2,174
Geekbench 6 Multi	—	11,888

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Memory & Platform

The Athlon X4 870K uses the FM2+ socket (PCIe 3.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-2133 on the Athlon X4 870K versus DDR4-3200 on the Ryzen 9 5900X — the Ryzen 9 5900X supports 50% 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 64 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Athlon X4 870K) vs 24 (Ryzen 9 5900X) — the Ryzen 9 5900X offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD FM2+ (Athlon X4 870K) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).

Feature	Athlon X4 870K	Ryzen 9 5900X
Socket	FM2+	AM4
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR3-2133	DDR4-3200+50%
Max RAM Capacity	64 GB	128 GB+100%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	16	24+50%

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Advanced Features

Virtualization: not specified (Athlon X4 870K) / AMD-V (Ryzen 9 5900X). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.

Feature	Athlon X4 870K	Ryzen 9 5900X
Integrated GPU	No	No
Unlocked	—	Yes
AVX-512	—	No
Virtualization	—	AMD-V
Target Use	—	Workstation

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Value Analysis

At launch, the Athlon X4 870K was priced at $90, while the Ryzen 9 5900X came in at $549. On launch pricing ($90 vs $549), Athlon X4 870K was $459 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon X4 870K delivers 38.3 pts/$ vs 71.0 pts/$ for the Ryzen 9 5900X — making the Ryzen 9 5900X the 59.9% better value option.

Feature	Athlon X4 870K	Ryzen 9 5900X
MSRP	$90-84%	$549
Performance per Dollar	38.3	71.0+85%
Release Date	2015	2020

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