Core 2 Quad Q8300 vs Core i3-4158U

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 2 Quad Q8300 vs Core i3-4158U 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 2 Quad Q8300 vs Core i3-4158U: Pros, Cons & Final Verdict

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

Core 2 Quad Q8300

2008

Why buy it

✅Draws 95W instead of 512W, a 417W reduction.

Trade-offs

❌Lower PassMark (1,917 vs 1,921).
❌Launch MSRP is still $179 MSRP, while Core i3-4158U mostly shows up through inconsistent older-market listings.
❌No integrated graphics, while Core i3-4158U can still boot and troubleshoot without a discrete GPU.

Core i3-4158U

2013

Why buy it

✅+0.2% higher PassMark.
✅100+% more PCIe lanes (12 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel Iris Graphics 5100, while Core 2 Quad Q8300 needs a discrete GPU.

Trade-offs

❌438.9% higher power demand at 512W vs 95W.

Quick Answers

So, is Core 2 Quad Q8300 better than Core i3-4158U?

It depends on what you want from the system. For gaming, Core 2 Quad Q8300 is ahead with a 1.5% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i3-4158U pulls ahead with 0.2% better PassMark.

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

For streaming, content creation, and heavier multitasking, Core i3-4158U is the stronger fit. You are getting 0.2% better PassMark, backed by 2 cores and 4 threads.

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

Core 2 Quad Q8300 is the better buy right now. Core 2 Quad Q8300 comes in at an unclear MSRP at $179 MSRP versus unclear MSRP, and it still gives you a 1.5% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core i3-4158U is still stronger for heavier multi-core work with 0.2% better PassMark. It is also 100.0% better value on MSRP (10.7 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i3-4158U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2013 vs 2008) and more multi-core headroom with 2 cores / 4 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core 2 Quad Q8300 vs Core i3-4158U Technical Specifications

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

Core 2 Quad Q8300

The Core 2 Quad Q8300 is manufactured by Intel. It was released in 2008-01-01. It is based on the Yorkfield (2007−2009) architecture. It features 4 cores and 4 threads. Base frequency is 2.5 GHz, with boost up to 2.5 GHz. L3 cache: 0 kB. L2 cache: 4 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 95 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,917 points. Launch price was $249.

Core i3-4158U

The Core i3-4158U is manufactured by Intel. It was released in 4 June 2013 (12 years ago). It is based on the Haswell (2013−2015) architecture. It features 2 cores and 4 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 3 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 28 Watt. Memory support: DDR3. Passmark benchmark score: 1,921 points. Launch price was $315.

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Processing Power

The Core 2 Quad Q8300 packs 4 cores / 4 threads, while the Core i3-4158U offers 2 cores / 4 threads — the Core 2 Quad Q8300 has 2 more cores. Boost clocks reach 2.5 GHz on the Core 2 Quad Q8300 versus 2 GHz on the Core i3-4158U — a 22.2% clock advantage for the Core 2 Quad Q8300 (base: 2.5 GHz vs 2 GHz). The Core 2 Quad Q8300 uses the Yorkfield (2007−2009) architecture (45 nm), while the Core i3-4158U uses Haswell (2013−2015) (22 nm). In PassMark, the Core 2 Quad Q8300 scores 1,917 against the Core i3-4158U's 1,921 — a 0.2% lead for the Core i3-4158U. L3 cache: 0 kB on the Core 2 Quad Q8300 vs 3 MB (total) on the Core i3-4158U.

Feature	Core 2 Quad Q8300	Core i3-4158U
Cores / Threads	4 / 4+100%	2 / 4
Boost Clock	2.5 GHz+25%	2 GHz
Base Clock	2.5 GHz+25%	2 GHz
L3 Cache	0 kB	3 MB (total)
L2 Cache	4 MB (total)	256K (per core)+6300%
Process	45 nm	22 nm-51%
Architecture	Yorkfield (2007−2009)	Haswell (2013−2015)
PassMark	1,917	1,921
Geekbench 6 Single	—	457

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Memory & Platform

The Core 2 Quad Q8300 uses the LGA775 socket (PCIe 1.1), while the Core i3-4158U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core 2 Quad Q8300	Core i3-4158U
Socket	LGA775	FCBGA1168
PCIe Generation	PCIe 1.1	PCIe 3.0+173%
Max RAM Speed	—	DDR3L-1600
Max RAM Capacity	—	16 GB
RAM Channels	—	2
ECC Support	—	No
PCIe Lanes	—	12

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Advanced Features

Virtualization: not specified (Core 2 Quad Q8300) / VT-x / VT-d / EPT (Core i3-4158U). The Core i3-4158U includes integrated graphics (Intel Iris Graphics 5100), while the Core 2 Quad Q8300 requires a dedicated GPU. Primary use case: Core i3-4158U targets Multimedia.