Athlon II X3 425e vs Athlon II X4 635

Athlon II X3 425e vs Athlon II X4 635 Performance Spectrum

Athlon II X3 425e

3 / 3

2,239

0.0%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Athlon II X4 635

4 / 4

2,248

+0.4%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

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 II X3 425e vs Athlon II X4 635 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 X3 425e vs Athlon II X4 635: 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 X3 425e

2011

Why buy it

✅Costs $321 less on MSRP ($79 MSRP vs $400 MSRP).
✅Delivers 404.3% more PassMark for each dollar spent, at 28.3 vs 5.6 PassMark/$ ($79 MSRP vs $400 MSRP).
✅Draws 45W instead of 95W, a 50W reduction.

Trade-offs

❌Lower PassMark (2,239 vs 2,248).
❌No boxed cooler included, unlike Athlon II X4 635.

Athlon II X4 635

2010

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Athlon II X3 425e.

Trade-offs

❌Lower PassMark per dollar, at 5.6 vs 28.3 PassMark/$ ($400 MSRP vs $79 MSRP).
❌111.1% higher power demand at 95W vs 45W.

Quick Answers

So, is Athlon II X4 635 better than Athlon II X3 425e?

Yes. Athlon II X4 635 is the better all-around CPU here. It gives you a 1.0% average FPS lead across 43 shared CPU game tests in our data and 0.4% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Athlon II X4 635 is the better pick. According to our tests, it delivers 1.0% more average FPS across 43 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Athlon II X4 635 is the stronger fit. You are getting 0.4% better PassMark, backed by 4 cores and 4 threads.

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

Athlon II X4 635 is still the much better call for a fresh build. Athlon II X4 635 comes in 406.3% more expensive on MSRP at $400 MSRP versus $79 MSRP, and it still gives you a 1.0% average FPS lead across 43 shared CPU game tests in our data. Athlon II X3 425e only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2011 platform. Even with 404.3% better value on paper (28.3 vs 5.6 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on AM3.

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

Athlon II X3 425e makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2011 vs 2010). That makes it the safer long-term bet.

Athlon II X3 425e vs Athlon II X4 635 Technical Specifications

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

Athlon II X3 425e

The Athlon II X3 425e is manufactured by AMD. It was released in 2009-01-01. It is based on the Rana (2009−2011) architecture. It features 3 cores and 3 threads. Base frequency is 2.7 GHz, with boost up to 2.7 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 45 Watt. Memory support: DDR3. Passmark benchmark score: 2,239 points. Launch price was $149.

Athlon II X4 635

The Athlon II X4 635 is manufactured by AMD. It was released in 25 January 2010 (15 years ago). It is based on the Propus (2009−2011) architecture. It features 4 cores and 4 threads. Base frequency is 2.9 GHz, with boost up to 2.9 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 2,248 points. Launch price was $70.

⚡

Processing Power

The Athlon II X3 425e packs 3 cores / 3 threads, while the Athlon II X4 635 offers 4 cores / 4 threads — the Athlon II X4 635 has 1 more core. Boost clocks reach 2.7 GHz on the Athlon II X3 425e versus 2.9 GHz on the Athlon II X4 635 — a 7.1% clock advantage for the Athlon II X4 635 (base: 2.7 GHz vs 2.9 GHz). The Athlon II X3 425e uses the Rana (2009−2011) architecture (45 nm), while the Athlon II X4 635 uses Propus (2009−2011) (45 nm). In PassMark, the Athlon II X3 425e scores 2,239 against the Athlon II X4 635's 2,248 — a 0.4% lead for the Athlon II X4 635. Both processors carry 0 kB of L3 cache.

Feature	Athlon II X3 425e	Athlon II X4 635
Cores / Threads	3 / 3	4 / 4+33%
Boost Clock	2.7 GHz	2.9 GHz+7%
Base Clock	2.7 GHz	2.9 GHz+7%
L3 Cache	0 kB	0 kB
L2 Cache	512 kB (per core)	512 kB (per core)
Process	45 nm	45 nm
Architecture	Rana (2009−2011)	Propus (2009−2011)
PassMark	2,239	2,248
Cinebench R23 Multi	—	658
Geekbench 6 Single	—	180
Geekbench 6 Multi	—	550

🧠

Memory & Platform

Both processors use the AM3 socket with PCIe 2.0. Both support up to DDR3-1333 memory speed. The Athlon II X3 425e supports up to 32 GB of RAM compared to 16 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Athlon II X3 425e) vs 16 (Athlon II X4 635) — the Athlon II X4 635 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD AM3 (Athlon II X3 425e) and AMD 770,785G,790FX,880G,890FX,970,990FX (Athlon II X4 635).

Feature	Athlon II X3 425e	Athlon II X4 635
Socket	AM3	AM3
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3-1333	DDR3-1333 / DDR2-1066
Max RAM Capacity	32 GB+100%	16 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	0	16

🔧

Advanced Features

Virtualization: not specified (Athlon II X3 425e) / AMD-V (Athlon II X4 635). Primary use case: Athlon II X4 635 targets Budget.

Feature	Athlon II X3 425e	Athlon II X4 635
Integrated GPU	No	No
Unlocked	—	Yes
AVX-512	—	No
Virtualization	—	AMD-V
Target Use	—	Budget

💰

Value Analysis

At launch, the Athlon II X3 425e was priced at $79, while the Athlon II X4 635 came in at $400. On launch pricing ($79 vs $400), Athlon II X3 425e was $321 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II X3 425e delivers 28.3 pts/$ vs 5.6 pts/$ for the Athlon II X4 635 — making the Athlon II X3 425e the 133.8% better value option.

Feature	Athlon II X3 425e	Athlon II X4 635
MSRP	$79-80%	$400
Performance per Dollar	28.3+405%	5.6
Release Date	2011	2010

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