Core i5-5675C vs Core i7-3920XM

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.

Core i5-5675C vs Core i7-3920XM 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.

Core i5-5675C vs Core i7-3920XM: Pros, Cons & Final Verdict

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

Core i5-5675C

2015

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-3920XM across 50 shared CPU benchmark tests.
❌Lower PassMark (5,693 vs 5,713).
❌Smaller total L3 cache (4 MB vs 8 MB).
❌Launch MSRP is still $276 MSRP, while Core i7-3920XM mostly shows up through inconsistent older-market listings.
❌18.2% higher power demand at 65W vs 55W.

Core i7-3920XM

2012

Why buy it

✅Better for gaming: +15.0% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (8 MB vs 4 MB).
✅Draws 55W instead of 65W, a 10W reduction.

Trade-offs

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

Quick Answers

So, is Core i7-3920XM better than Core i5-5675C?

Yes. Core i7-3920XM is the better all-around CPU here. It gives you a 15.0% average FPS lead across 50 shared CPU game tests in our data and 0.4% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i7-3920XM is the better pick. According to our tests, it delivers 15.0% 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, Core i7-3920XM is the stronger fit. You are getting 0.4% better PassMark, backed by 4 cores and 8 threads. It also has the larger cache pool with 100% larger total L3 cache (8 MB vs 4 MB).

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

Core i7-3920XM is still the much better call for a fresh build. Core i7-3920XM comes in at an unclear MSRP at unclear MSRP versus $276 MSRP, and it still gives you a 15.0% average FPS lead across 50 shared CPU game tests in our data. Core i5-5675C only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2015 platform. Even with 100.0% better value on paper (20.6 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1150.

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

Core i5-5675C makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2015 vs 2012). That makes it the safer long-term bet.

Core i5-5675C vs Core i7-3920XM Technical Specifications

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

Core i5-5675C

The Core i5-5675C is manufactured by Intel. It was released in 15 May 2015 (10 years ago). It is based on the Broadwell (2015−2019) architecture. It features 4 cores and 4 threads. Base frequency is 3.1 GHz, with boost up to 3.6 GHz. L3 cache: 4 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA1150. Thermal design power (TDP): 65 Watt. Memory support: DDR3L-1333, DDR3L-1600. Passmark benchmark score: 5,693 points. Launch price was $149.

Core i7-3920XM

The Core i7-3920XM 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 2.9 GHz, with boost up to 3.8 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: PGA988. Thermal design power (TDP): 55 Watt. Memory support: DDR3. Passmark benchmark score: 5,713 points. Launch price was $1,096.

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Processing Power

The Core i5-5675C packs 4 cores / 4 threads, matching the Core i7-3920XM's 4 cores. Boost clocks reach 3.6 GHz on the Core i5-5675C versus 3.8 GHz on the Core i7-3920XM — a 5.4% clock advantage for the Core i7-3920XM (base: 3.1 GHz vs 2.9 GHz). The Core i5-5675C uses the Broadwell (2015−2019) architecture (14 nm), while the Core i7-3920XM uses Ivy Bridge (2012−2013) (22 nm). In PassMark, the Core i5-5675C scores 5,693 against the Core i7-3920XM's 5,713 — a 0.4% lead for the Core i7-3920XM. L3 cache: 4 MB (total) on the Core i5-5675C vs 8 MB (total) on the Core i7-3920XM.

Feature	Core i5-5675C	Core i7-3920XM
Cores / Threads	4 / 4	4 / 8
Boost Clock	3.6 GHz	3.8 GHz+6%
Base Clock	3.1 GHz+7%	2.9 GHz
L3 Cache	4 MB (total)	8 MB (total)+100%
L2 Cache	1 MB (per core)	256K (per core)+25500%
Process	14 nm-36%	22 nm
Architecture	Broadwell (2015−2019)	Ivy Bridge (2012−2013)
PassMark	5,693	5,713
Geekbench 6 Single	—	686

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Memory & Platform

The Core i5-5675C uses the LGA1150 socket (PCIe 3.0), while the Core i7-3920XM uses PGA988 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR3L-1600 memory speed. Both support up to 32 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes.

Feature	Core i5-5675C	Core i7-3920XM
Socket	LGA1150	PGA988
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR3L-1600	DDR3-1600
Max RAM Capacity	32 GB	32 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	16

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Advanced Features

Both processors feature an unlocked multiplier for overclocking. Virtualization support: VT-x, VT-d (Core i5-5675C) vs VT-x, VT-d, EPT (Core i7-3920XM). Both include integrated graphics — Iris Pro Graphics 6200 (Core i5-5675C) and HD Graphics 4000 (Core i7-3920XM) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-5675C targets Desktop, Core i7-3920XM targets Extreme Performance Laptop. Direct competitor: Core i7-3920XM rivals A10-5750M.

Feature	Core i5-5675C	Core i7-3920XM
Integrated GPU	Yes	Yes
IGPU Model	Iris Pro Graphics 6200	HD Graphics 4000
Unlocked	Yes	Yes
AVX-512	No	No
Virtualization	VT-x, VT-d	VT-x, VT-d, EPT
Target Use	Desktop	Extreme Performance Laptop