Atom x7405C vs Core i7-3615QM

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 x7405C vs Core i7-3615QM 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 x7405C vs Core i7-3615QM: Pros, Cons & Final Verdict

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

Atom x7405C

2024

Why buy it

✅+1% higher PassMark.
✅Draws 12W instead of 45W, a 33W reduction.
✅Newer platform on FCBGA1264 with DDR5 support instead of FCBGA1224 and older memory support.
✅100+% more PCIe lanes (9 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel UHD Graphics, while Core i7-3615QM needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-3615QM across 50 shared CPU benchmark tests.

Core i7-3615QM

2012

Why buy it

✅Better for gaming: +20.7% higher average FPS across 50 shared CPU benchmark tests.

Trade-offs

❌Lower PassMark (5,167 vs 5,218).
❌275% higher power demand at 45W vs 12W.
❌Older platform position on FCBGA1224, while Atom x7405C moves to FCBGA1264 and DDR5.
❌No integrated graphics, while Atom x7405C can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Atom x7405C better than Core i7-3615QM?

It depends on what you want from the system. For gaming, Core i7-3615QM is ahead with a 20.7% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Atom x7405C pulls ahead with 1% better PassMark.

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

For streaming, content creation, and heavier multitasking, Atom x7405C is the stronger fit. You are getting 1% better PassMark, backed by 4 cores and 4 threads.

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

Atom x7405C still makes the most sense overall. Atom x7405C comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 1% better PassMark.

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

Atom x7405C makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2012), a healthier platform with FCBGA1264 and DDR5 instead of FCBGA1224, and more multi-core headroom with 4 cores / 4 threads instead of 4/8. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Atom x7405C vs Core i7-3615QM Technical Specifications

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

Atom x7405C

The Atom x7405C is manufactured by Intel. It was released in 8 April 2024 (1 year ago). It is based on the Amston Lake (2024−2025) architecture. It features 4 cores and 4 threads. Base frequency is 1.7 GHz, with boost up to 3.4 GHz. L3 cache: 6 MB (total). L2 cache: 2 MB (total). Built on 10 nm process technology. Socket: FCBGA1264. Thermal design power (TDP): 12 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 5,218 points. Launch price was $57.

Core i7-3615QM

The Core i7-3615QM is manufactured by Intel. It was released in 29 April 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 4 cores and 8 threads. Base frequency is 2.3 GHz, with boost up to 3.3 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: FCBGA1224. Thermal design power (TDP): 45 Watt. Memory support: DDR3. Passmark benchmark score: 5,167 points. Launch price was $378.

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Processing Power

The Atom x7405C packs 4 cores / 4 threads, matching the Core i7-3615QM's 4 cores. Boost clocks reach 3.4 GHz on the Atom x7405C versus 3.3 GHz on the Core i7-3615QM — a 3% clock advantage for the Atom x7405C (base: 1.7 GHz vs 2.3 GHz). The Atom x7405C uses the Amston Lake (2024−2025) architecture (10 nm), while the Core i7-3615QM uses Ivy Bridge (2012−2013) (22 nm). In PassMark, the Atom x7405C scores 5,218 against the Core i7-3615QM's 5,167 — a 1% lead for the Atom x7405C. Both processors carry 6 MB (total) of L3 cache.

Feature	Atom x7405C	Core i7-3615QM
Cores / Threads	4 / 4	4 / 8
Boost Clock	3.4 GHz+3%	3.3 GHz
Base Clock	1.7 GHz	2.3 GHz+35%
L3 Cache	6 MB (total)	6 MB (total)
L2 Cache	2 MB (total)	256K (per core)+12700%
Process	10 nm-55%	22 nm
Architecture	Amston Lake (2024−2025)	Ivy Bridge (2012−2013)
PassMark	5,218	5,167

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Memory & Platform

The Atom x7405C uses the FCBGA1264 socket (PCIe 4.0), while the Core i7-3615QM uses FCBGA1224 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Atom x7405C	Core i7-3615QM
Socket	FCBGA1264	FCBGA1224
PCIe Generation	PCIe 4.0+33%	PCIe 3.0
Max RAM Speed	DDR5-4800	—
Max RAM Capacity	16 GB	—
RAM Channels	1	—
ECC Support	No	—
PCIe Lanes	9	—