Athlon II X4 638 vs Ryzen 7 5700X

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 II X4 638 vs Ryzen 7 5700X 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 II X4 638 vs Ryzen 7 5700X: Pros, Cons & Final Verdict

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

Athlon II X4 638

2012

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 5700X across 50 shared CPU benchmark tests.
❌Lower PassMark (2,260 vs 26,609).
❌Lower PassMark per dollar, at 7.5 vs 89.0 PassMark/$ ($300 MSRP vs $299 MSRP).

Ryzen 7 5700X

2022

Why buy it

✅Better for gaming: +360.4% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $1 less on MSRP ($299 MSRP vs $300 MSRP).
✅Delivers 1081.3% more PassMark for each dollar spent, at 89.0 vs 7.5 PassMark/$ ($299 MSRP vs $300 MSRP).
✅50% more PCIe lanes (24 vs 16) for storage and expansion-heavy builds.

Trade-offs

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

Quick Answers

So, is Ryzen 7 5700X better than Athlon II X4 638?

Yes. Ryzen 7 5700X is the better all-around CPU here. It gives you a 360.4% average FPS lead across 50 shared CPU game tests in our data, 1077.4% 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 7 5700X is the better pick. According to our tests, it delivers 360.4% 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 7 5700X is the stronger fit. You are getting 1077.4% better PassMark, backed by 8 cores and 16 threads.

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

Ryzen 7 5700X is the better buy right now. Ryzen 7 5700X comes in $1 cheaper on MSRP at $299 MSRP versus $300 MSRP, and it still gives you a 360.4% average FPS lead across 50 shared CPU game tests in our data. It is also 1081.3% better value on MSRP (89.0 vs 7.5 PassMark/$), 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 5700X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2012) and more multi-core headroom with 8 cores / 16 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon II X4 638 vs Ryzen 7 5700X Technical Specifications

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

Athlon II X4 638

The Athlon II X4 638 is manufactured by AMD. It was released in 2009-01-01. It is based on the Llano (2011−2012) architecture. It features 4 cores and 4 threads. Base frequency is 2.7 GHz, with boost up to 2.7 GHz. L3 cache: 0 kB. L2 cache: 1 MB (per core). Built on 32 nm process technology. Socket: FM1. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 2,260 points. Launch price was $149.

Ryzen 7 5700X

The Ryzen 7 5700X is manufactured by AMD. It was released in 4 April 2022 (3 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.4 GHz, with boost up to 4.6 GHz. L3 cache: 32 MB (total). L2 cache: 512K (per core). Built on 7 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 26,609 points. Launch price was $299.

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Processing Power

The Athlon II X4 638 packs 4 cores / 4 threads, while the Ryzen 7 5700X offers 8 cores / 16 threads — the Ryzen 7 5700X has 4 more cores. Boost clocks reach 2.7 GHz on the Athlon II X4 638 versus 4.6 GHz on the Ryzen 7 5700X — a 52.1% clock advantage for the Ryzen 7 5700X (base: 2.7 GHz vs 3.4 GHz). The Athlon II X4 638 uses the Llano (2011−2012) architecture (32 nm), while the Ryzen 7 5700X uses Vermeer (Zen 3) (2020−2022) (7 nm). In PassMark, the Athlon II X4 638 scores 2,260 against the Ryzen 7 5700X's 26,609 — a 168.7% lead for the Ryzen 7 5700X. L3 cache: 0 kB on the Athlon II X4 638 vs 32 MB (total) on the Ryzen 7 5700X.

Feature	Athlon II X4 638	Ryzen 7 5700X
Cores / Threads	4 / 4	8 / 16+100%
Boost Clock	2.7 GHz	4.6 GHz+70%
Base Clock	2.7 GHz	3.4 GHz+26%
L3 Cache	0 kB	32 MB (total)
L2 Cache	1 MB (per core)	512K (per core)+51100%
Process	32 nm	7 nm-78%
Architecture	Llano (2011−2012)	Vermeer (Zen 3) (2020−2022)
PassMark	2,260	26,609+1077%
Cinebench R23 Multi	—	14,000
Geekbench 6 Single	—	2,116
Geekbench 6 Multi	—	9,715

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Memory & Platform

The Athlon II X4 638 uses the FM1 socket (PCIe 2.0), while the Ryzen 7 5700X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1866 on the Athlon II X4 638 versus DDR4-3200 on the Ryzen 7 5700X — the Ryzen 7 5700X supports 71.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 5700X 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 II X4 638) vs 24 (Ryzen 7 5700X) — the Ryzen 7 5700X offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD FM1 (Athlon II X4 638) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 7 5700X).

Feature	Athlon II X4 638	Ryzen 7 5700X
Socket	FM1	AM4
PCIe Generation	PCIe 2.0	PCIe 4.0+100%
Max RAM Speed	DDR3-1866	DDR4-3200+71%
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 II X4 638) / AMD-V (Ryzen 7 5700X). Primary use case: Ryzen 7 5700X targets Gaming. Direct competitor: Ryzen 7 5700X rivals Core i7-11700K.

Feature	Athlon II X4 638	Ryzen 7 5700X
Integrated GPU	No	No
Unlocked	—	Yes
AVX-512	—	No
Virtualization	—	AMD-V
Target Use	—	Gaming

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Value Analysis

At launch, the Athlon II X4 638 was priced at $300, while the Ryzen 7 5700X came in at $299. On launch pricing ($300 vs $299), Ryzen 7 5700X was $1 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II X4 638 delivers 7.5 pts/$ vs 89.0 pts/$ for the Ryzen 7 5700X — making the Ryzen 7 5700X the 168.8% better value option.

Feature	Athlon II X4 638	Ryzen 7 5700X
MSRP	$300	$299
Performance per Dollar	7.5	89.0+1087%
Release Date	2012	2022

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