Atom E3815 vs Atom Z670

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 Atom Z670 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 Atom Z670: 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.

Trade-offs

❌Lower PassMark (365 vs 375).
❌16966.7% higher power demand at 512W vs 3W.

Atom Z670

2011

Why buy it

✅Draws 3W instead of 512W, a 509W reduction.

Trade-offs

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

Quick Answers

So, is Atom Z670 better than Atom E3815?

Yes. Atom Z670 is the better all-around CPU here. It gives you 2.7% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Atom Z670 has the edge because it leads the single-thread side of this matchup with 2% higher max boost clock.

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

For streaming, content creation, and heavier multitasking, Atom Z670 is the stronger fit. You are getting 2.7% better PassMark, backed by 1 cores and 2 threads.

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

Atom Z670 still makes the most sense overall. Atom Z670 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 2.7% 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 2011). That makes it the safer long-term bet.

Atom E3815 vs Atom Z670 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.

Atom Z670

The Atom Z670 is manufactured by Intel. It was released in 11 April 2011 (14 years ago). It is based on the Lincroft (2010−2011) architecture. It features 1 cores and 2 threads. Base frequency is 1.5 GHz, with boost up to 1.5 GHz. L3 cache: 0 kB. L2 cache: 512K (per core). Built on 45 nm process technology. Socket: T-PBGA518. Thermal design power (TDP): 3 Watt. Memory support: DDR2. Passmark benchmark score: 375 points. Launch price was $75.

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Processing Power

The Atom E3815 packs 1 cores / 1 threads, matching the Atom Z670's 1 cores. Boost clocks reach 1.47 GHz on the Atom E3815 versus 1.5 GHz on the Atom Z670 — a 2% clock advantage for the Atom Z670. The Atom E3815 uses the Bay Trail-I (2013) architecture (22 nm), while the Atom Z670 uses Lincroft (2010−2011) (45 nm). In PassMark, the Atom E3815 scores 365 against the Atom Z670's 375 — a 2.7% lead for the Atom Z670. Both processors carry 0 kB of L3 cache.

Feature	Atom E3815	Atom Z670
Cores / Threads	1 / 1	1 / 2
Boost Clock	1.47 GHz	1.5 GHz+2%
Base Clock	—	1.5 GHz
L3 Cache	0 kB	0 kB
L2 Cache	512 kB (per core)	512K (per core)
Process	22 nm-51%	45 nm
Architecture	Bay Trail-I (2013)	Lincroft (2010−2011)
PassMark	365	375+3%

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Memory & Platform

The Atom E3815 uses the FCBGA1170 socket (PCIe 2.0), while the Atom Z670 uses T-PBGA518 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3L-1066 on the Atom E3815 versus DDR2-800 on the Atom Z670 — the Atom E3815 supports 33.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Atom E3815 supports up to 8 GB of RAM compared to 2 GB — 300% more capacity for professional workloads. Both feature 1-channel memory with ECC support. PCIe lanes: 4 (Atom E3815) vs 0 (Atom Z670) — the Atom E3815 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel FCBGA1170 (Atom E3815) and Intel SM35 (Atom Z670).

Feature	Atom E3815	Atom Z670
Socket	FCBGA1170	T-PBGA518
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3L-1066+33%	DDR2-800
Max RAM Capacity	8 GB+300%	2 GB
RAM Channels	1	1
ECC Support	Yes	No
PCIe Lanes	4	0

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Advanced Features

Both include integrated graphics — Intel HD Graphics (Bay Trail) (Atom E3815) and Intel GMA 600 (Atom Z670) — useful as a fallback for troubleshooting or display output without a dedicated GPU.