A4-5100 vs Pentium U5400

A4-5100 vs Pentium U5400 Performance Spectrum

A4-5100

4 / 4

1,301

+1.2%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Pentium U5400

2 / 2

1,286

0.0%

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.

A4-5100 vs Pentium U5400 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.

A4-5100 vs Pentium U5400: Pros, Cons & Final Verdict

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

A4-5100

2013

Why buy it

✅Better for gaming: +4.9% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 15W instead of 18W, a 3W reduction.

Trade-offs

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

Pentium U5400

2010

Why buy it

✅100% more PCIe lanes (16 vs 8) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than A4-5100 across 50 shared CPU benchmark tests.
❌Lower PassMark (1,286 vs 1,301).
❌Launch MSRP is still $289 MSRP, while A4-5100 mostly shows up through inconsistent older-market listings.
❌20% higher power demand at 18W vs 15W.

Quick Answers

So, is A4-5100 better than Pentium U5400?

Yes. A4-5100 is the better all-around CPU here. It gives you a 4.9% average FPS lead across 50 shared CPU game tests in our data, 1.2% 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, A4-5100 is the better pick. According to our tests, it delivers 4.9% 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, A4-5100 is the stronger fit. You are getting 1.2% better PassMark, backed by 4 cores and 4 threads.

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

A4-5100 is the easy recommendation for a fresh desktop build. A4-5100 comes in at an unclear MSRP at unclear MSRP versus $289 MSRP, and it still gives you a 4.9% average FPS lead across 50 shared CPU game tests in our data. Pentium U5400 only looks good on raw value math because it is a cheap legacy laptop chip, not because it is a real desktop gaming recommendation. It simply does not keep up in modern games, especially when the gap is already 4.9% in the shared gaming data.

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

A4-5100 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2013 vs 2010) and more multi-core headroom with 4 cores / 4 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

A4-5100 vs Pentium U5400 Technical Specifications

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

A4-5100

The A4-5100 is manufactured by AMD. It was released in 2014-01-01. It is based on the Kabini (2013−2014) architecture. It features 4 cores and 4 threads. Max frequency: 1.55 GHz. L2 cache: 2048 kB. Built on 28 nm process technology. Socket: FT3. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 1,301 points. Launch price was $50.

Pentium U5400

The Pentium U5400 is manufactured by Intel. It was released in 2007-01-01. It is based on the Arrandale (2010−2011) architecture. It features 2 cores and 2 threads. Base frequency is 1.2 GHz, with boost up to 1.2 GHz. L3 cache: 3 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: BGA1288. Thermal design power (TDP): 18 Watt. Memory support: DDR3. Passmark benchmark score: 1,286 points. Launch price was $69.

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Processing Power

The A4-5100 packs 4 cores / 4 threads, while the Pentium U5400 offers 2 cores / 2 threads — the A4-5100 has 2 more cores. Boost clocks reach 1.55 GHz on the A4-5100 versus 1.2 GHz on the Pentium U5400 — a 25.5% clock advantage for the A4-5100. The A4-5100 uses the Kabini (2013−2014) architecture (28 nm), while the Pentium U5400 uses Arrandale (2010−2011) (32 nm). In PassMark, the A4-5100 scores 1,301 against the Pentium U5400's 1,286 — a 1.2% lead for the A4-5100. Geekbench 6 single-core — the metric most relevant to gaming — records 165 vs 170, a 3% lead for the Pentium U5400 that directly translates to higher frame rates.

Feature	A4-5100	Pentium U5400
Cores / Threads	4 / 4+100%	2 / 2
Boost Clock	1.55 GHz+29%	1.2 GHz
Base Clock	—	1.2 GHz
L3 Cache	—	3 MB (total)
L2 Cache	2048 kB+700%	256K (per core)
Process	28 nm-13%	32 nm
Architecture	Kabini (2013−2014)	Arrandale (2010−2011)
PassMark	1,301+1%	1,286
Geekbench 6 Single	165	170+3%
Geekbench 6 Multi	—	300

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Memory & Platform

The A4-5100 uses the FT3 socket (PCIe 2.0), while the Pentium U5400 uses BGA1288 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3L-1600 on the A4-5100 versus DDR3-800 on the Pentium U5400 — the A4-5100 supports 100% faster memory, which can translate to measurable gains in memory-sensitive workloads. The A4-5100 supports up to 16 GB of RAM compared to 8 GB — 100% more capacity for professional workloads. Memory channels: 1 (A4-5100) vs 2 (Pentium U5400). PCIe lanes: 8 (A4-5100) vs 16 (Pentium U5400) — the Pentium U5400 offers 8 more lanes for additional GPUs or NVMe drives.

Feature	A4-5100	Pentium U5400
Socket	FT3	BGA1288
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3L-1600+100%	DDR3-800
Max RAM Capacity	16 GB+100%	8 GB
RAM Channels	1	2+100%
ECC Support	No	No
PCIe Lanes	8	16+100%

🔧

Advanced Features

Neither processor supports overclocking. Virtualization support: AMD-V (A4-5100) vs VT-x (Pentium U5400). Both include integrated graphics — Radeon HD 8330 (A4-5100) and Intel HD Graphics (Ironlake) (Pentium U5400) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: A4-5100 targets Entry Laptop, Pentium U5400 targets Legacy Budget Laptop. Direct competitor: A4-5100 rivals Pentium N3540.

Feature	A4-5100	Pentium U5400
Integrated GPU	Yes	Yes
IGPU Model	Radeon HD 8330	Intel HD Graphics (Ironlake)
Unlocked	No	No
AVX-512	No	No
Virtualization	AMD-V	VT-x
Target Use	Entry Laptop	Legacy Budget Laptop