Atom E3815 vs Mobile Sempron 3300+

Atom E3815 vs Mobile Sempron 3300+ Performance Spectrum

Atom E3815

1 / 1

365

0.0%

376

+3.0%

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.

Atom E3815 vs Mobile Sempron 3300+ 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.

Atom E3815 vs Mobile Sempron 3300+: Pros, Cons & Final Verdict

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

Atom E3815

2013

Why buy it

✅100+% more PCIe lanes (4 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel HD Graphics (Bay Trail), while Mobile Sempron 3300+ needs a discrete GPU.

Trade-offs

❌Lower PassMark (365 vs 376).
❌300% higher power demand at 512W vs 128W.

Mobile Sempron 3300+

2005

Why buy it

✅Draws 128W instead of 512W, a 384W reduction.

Trade-offs

❌No integrated graphics, while Atom E3815 can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Mobile Sempron 3300+ better than Atom E3815?

Yes. Mobile Sempron 3300+ is the better all-around CPU here. It gives you 3% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Mobile Sempron 3300+ has the edge because it leads the single-thread side of this matchup with 36.1% higher max boost clock.

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

For streaming, content creation, and heavier multitasking, Mobile Sempron 3300+ is the stronger fit. You are getting 3% better PassMark, backed by 1 cores and 1 threads.

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

Mobile Sempron 3300+ still makes the most sense overall. Mobile Sempron 3300+ comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 3.0% higher PassMark.

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

Atom E3815 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2013 vs 2005). That makes it the safer long-term bet.

Atom E3815 vs Mobile Sempron 3300+ Technical Specifications

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

Atom E3815

The Atom E3815 is manufactured by Intel. It was released in 8 October 2013 (12 years ago). It is based on the Bay Trail-I (2013) architecture. It features 1 cores and 1 threads. Max frequency: 1.47 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 22 nm process technology. Socket: FCBGA1170. Thermal design power (TDP): 512 kB. Memory support: DDR3. Passmark benchmark score: 365 points. Launch price was $134.

Mobile Sempron 3300+

The Mobile Sempron 3300+ is manufactured by AMD. It was released in 1 June 2005 (20 years ago). It is based on the Roma (2005) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L2 cache: 128 kB. Built on 90 nm process technology. Socket: 745. Thermal design power (TDP): 128 kB. Passmark benchmark score: 376 points. Launch price was $69.

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Processing Power

Both the Atom E3815 and Mobile Sempron 3300+ share an identical 1-core/1-thread configuration. Boost clocks reach 1.47 GHz on the Atom E3815 versus 2 GHz on the Mobile Sempron 3300+ — a 30.5% clock advantage for the Mobile Sempron 3300+. The Atom E3815 uses the Bay Trail-I (2013) architecture (22 nm), while the Mobile Sempron 3300+ uses Roma (2005) (90 nm). In PassMark, the Atom E3815 scores 365 against the Mobile Sempron 3300+'s 376 — a 3% lead for the Mobile Sempron 3300+.

Feature	Atom E3815	Mobile Sempron 3300+
Cores / Threads	1 / 1	1 / 1
Boost Clock	1.47 GHz	2 GHz+36%
L3 Cache	0 kB	—
L2 Cache	512 kB (per core)+300%	128 kB
Process	22 nm-76%	90 nm
Architecture	Bay Trail-I (2013)	Roma (2005)
PassMark	365	376+3%

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Memory & Platform

The Atom E3815 uses the FCBGA1170 socket (PCIe 2.0), while the Mobile Sempron 3300+ uses 745 (PCIe 2.0) — making them incompatible on the same motherboard.