Athlon II Neo K345 vs Pentium 3805U

Athlon II Neo K345 vs Pentium 3805U Performance Spectrum

Athlon II Neo K345

2 / 2

1,191

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Pentium 3805U

2 / 2

1,196

+0.4%

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 Neo K345 vs Pentium 3805U 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 Neo K345 vs Pentium 3805U: 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 Neo K345

2010

Why buy it

✅Draws 1W instead of 512W, a 511W reduction.

Trade-offs

❌Lower PassMark (1,191 vs 1,196).
❌Launch MSRP is still $50 MSRP, while Pentium 3805U mostly shows up through inconsistent older-market listings.
❌No integrated graphics, while Pentium 3805U can still boot and troubleshoot without a discrete GPU.

Pentium 3805U

2015

Why buy it

✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics (Broadwell), while Athlon II Neo K345 needs a discrete GPU.

Trade-offs

❌51100% higher power demand at 512W vs 1W.

Quick Answers

So, is Pentium 3805U better than Athlon II Neo K345?

Yes. Pentium 3805U is the better all-around CPU here. It gives you a 1.7% average FPS lead across 50 shared CPU game tests in our data, 0.4% 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, Pentium 3805U is the better pick. According to our tests, it delivers 1.7% 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, Pentium 3805U is the stronger fit. You are getting 0.4% better PassMark, backed by 2 cores and 2 threads.

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

Pentium 3805U is still the much better call for a fresh build. Pentium 3805U comes in at an unclear MSRP at unclear MSRP versus $50 MSRP, and it still gives you a 1.7% average FPS lead across 50 shared CPU game tests in our data. Athlon II Neo K345 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2010 platform. Even with 100.0% better value on paper (23.8 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on S1.

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

Pentium 3805U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2015 vs 2010) and more multi-core headroom with 2 cores / 2 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon II Neo K345 vs Pentium 3805U Technical Specifications

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

Athlon II Neo K345

The Athlon II Neo K345 is manufactured by AMD. It was released in 2009-01-01. It is based on the Champlain (2010−2011) architecture. It features 2 cores and 2 threads. Max frequency: 1.4 GHz. L2 cache: 1 MB. Built on 45 nm process technology. Socket: S1. Thermal design power (TDP): 1 MB. Memory support: DDR3. Passmark benchmark score: 1,191 points. Launch price was $149.

Pentium 3805U

The Pentium 3805U is manufactured by Intel. It was released in 1 March 2015 (10 years ago). It is based on the Broadwell-U (2015) architecture. It features 2 cores and 2 threads. Base frequency is 1.9 GHz, with boost up to 1.9 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 1,196 points. Launch price was $161.

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Processing Power

Both the Athlon II Neo K345 and Pentium 3805U share an identical 2-core/2-thread configuration. Boost clocks reach 1.4 GHz on the Athlon II Neo K345 versus 1.9 GHz on the Pentium 3805U — a 30.3% clock advantage for the Pentium 3805U. The Athlon II Neo K345 uses the Champlain (2010−2011) architecture (45 nm), while the Pentium 3805U uses Broadwell-U (2015) (14 nm). In PassMark, the Athlon II Neo K345 scores 1,191 against the Pentium 3805U's 1,196 — a 0.4% lead for the Pentium 3805U.

Feature	Athlon II Neo K345	Pentium 3805U
Cores / Threads	2 / 2	2 / 2
Boost Clock	1.4 GHz	1.9 GHz+36%
Base Clock	—	1.9 GHz
L3 Cache	—	2 MB (total)
L2 Cache	1 MB	256K (per core)+25500%
Process	45 nm	14 nm-69%
Architecture	Champlain (2010−2011)	Broadwell-U (2015)
PassMark	1,191	1,196

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Memory & Platform

The Athlon II Neo K345 uses the S1 socket (PCIe 2.0), while the Pentium 3805U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1066 on the Athlon II Neo K345 versus DDR3L-1600 on the Pentium 3805U — the Pentium 3805U supports 50.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Pentium 3805U supports up to 16 GB of RAM compared to 4 GB — 300% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Athlon II Neo K345) vs 12 (Pentium 3805U) — the Pentium 3805U offers 12 more lanes for additional GPUs or NVMe drives.

Feature	Athlon II Neo K345	Pentium 3805U
Socket	S1	FCBGA1168
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1066	DDR3L-1600+50%
Max RAM Capacity	4 GB	16 GB+300%
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	0	12

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Advanced Features

Virtualization: not specified (Athlon II Neo K345) / VT-x, VT-d (Pentium 3805U). The Pentium 3805U includes integrated graphics (HD Graphics (Broadwell)), while the Athlon II Neo K345 requires a dedicated GPU. Primary use case: Pentium 3805U targets Mobile.