Celeron 3865U vs Phenom X4 9100e

Celeron 3865U vs Phenom X4 9100e Performance Spectrum

Celeron 3865U

2 / 2

1,343

0.0%

1,353

+0.7%

Ryzen Threadripper PRO 3955WX

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.

Celeron 3865U vs Phenom X4 9100e 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.

Celeron 3865U vs Phenom X4 9100e: Pros, Cons & Final Verdict

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

Celeron 3865U

2017

Why buy it

✅Draws 15W instead of 65W, a 50W reduction.
✅100+% more PCIe lanes (10 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel HD Graphics 610, while Phenom X4 9100e needs a discrete GPU.

Trade-offs

❌Lower PassMark (1,343 vs 1,353).

Phenom X4 9100e

2008

Why buy it

✅+0.7% higher PassMark.

Trade-offs

❌Launch MSRP is still $200 MSRP, while Celeron 3865U mostly shows up through inconsistent older-market listings.
❌333.3% higher power demand at 65W vs 15W.
❌No integrated graphics, while Celeron 3865U can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Phenom X4 9100e better than Celeron 3865U?

Yes. Phenom X4 9100e is the better all-around CPU here. It gives you a 0.3% average FPS lead across 50 shared CPU game tests in our data and 0.7% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

For gaming, this matchup is basically a tie in the data we have.

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

For streaming, content creation, and heavier multitasking, Phenom X4 9100e is the stronger fit. You are getting 0.7% better PassMark, backed by 4 cores and 4 threads.

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

Phenom X4 9100e is the better buy right now. Phenom X4 9100e comes in at an unclear MSRP at $200 MSRP versus unclear MSRP, and it still gives you a 0.3% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (6.8 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Celeron 3865U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2017 vs 2008). That makes it the safer long-term bet.

Celeron 3865U vs Phenom X4 9100e Technical Specifications

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

Celeron 3865U

The Celeron 3865U is manufactured by Intel. It was released in 3 January 2017 (8 years ago). It is based on the Kaby Lake-U (2017) architecture. It features 2 cores and 2 threads. Base frequency is 1.8 GHz, with boost up to 1.8 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 1,343 points. Launch price was $107.

Phenom X4 9100e

The Phenom X4 9100e is manufactured by AMD. It was released in 2009-01-01. It is based on the Agena (2007−2008) architecture. It features 4 cores and 4 threads. Max frequency: 1.8 GHz. L3 cache: 2 MB (total). L2 cache: 512 kB (per core). Built on 65 nm process technology. Socket: AM2+. Thermal design power (TDP): 65 Watt. Passmark benchmark score: 1,353 points. Launch price was $149.

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Processing Power

The Celeron 3865U packs 2 cores / 2 threads, while the Phenom X4 9100e offers 4 cores / 4 threads — the Phenom X4 9100e has 2 more cores. Boost clocks reach 1.8 GHz on the Celeron 3865U versus 1.8 GHz on the Phenom X4 9100e — identical boost frequencies. The Celeron 3865U uses the Kaby Lake-U (2017) architecture (14 nm), while the Phenom X4 9100e uses Agena (2007−2008) (65 nm). In PassMark, the Celeron 3865U scores 1,343 against the Phenom X4 9100e's 1,353 — a 0.7% lead for the Phenom X4 9100e. Both processors carry 2 MB (total) of L3 cache.

Feature	Celeron 3865U	Phenom X4 9100e
Cores / Threads	2 / 2	4 / 4+100%
Boost Clock	1.8 GHz	1.8 GHz
Base Clock	1.8 GHz	—
L3 Cache	2 MB (total)	2 MB (total)
L2 Cache	256K (per core)	512 kB (per core)+100%
Process	14 nm-78%	65 nm
Architecture	Kaby Lake-U (2017)	Agena (2007−2008)
PassMark	1,343	1,353
Geekbench 6 Single	389	—
Geekbench 6 Multi	674	—

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Memory & Platform

The Celeron 3865U uses the BGA1356 socket (PCIe 3.0), while the Phenom X4 9100e uses AM2+ (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Celeron 3865U	Phenom X4 9100e
Socket	BGA1356	AM2+
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR4-2133 / LPDDR3-1866	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	10	—

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Advanced Features

Virtualization: VT-x / VT-d / EPT (Celeron 3865U) / not specified (Phenom X4 9100e). The Celeron 3865U includes integrated graphics (Intel HD Graphics 610), while the Phenom X4 9100e requires a dedicated GPU. Primary use case: Celeron 3865U targets Entry-level. Direct competitor: Celeron 3865U rivals Pentium Gold 4415U.