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 Duo T8300 vs Core i5-10400F 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 Duo T8300 vs Core i5-10400F: 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 Duo T8300

2008

Why buy it

✅Draws 3W instead of 65W, a 62W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (850 vs 5,783).
❌Smaller total L3 cache (3 MB vs 12 MB).
❌No boxed cooler included, unlike Core i5-10400F.

Core i5-10400F

2020

Why buy it

✅Better for gaming: +391.4% higher average FPS across 50 shared CPU benchmark tests.
✅+300% larger total L3 cache (12 MB vs 3 MB).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Core 2 Duo T8300.

Trade-offs

❌Launch MSRP is still $160 MSRP, while Core 2 Duo T8300 mostly shows up through inconsistent older-market listings.
❌2066.7% higher power demand at 65W vs 3W.

Quick Answers

So, is Core i5-10400F better than Core 2 Duo T8300?

Yes. Core i5-10400F is the better all-around CPU here. It gives you a 391.4% average FPS lead across 50 shared CPU game tests in our data, 580.4% better Geekbench multi-core, 785.1% higher PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i5-10400F is the better pick. According to our tests, it delivers 391.4% 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 i5-10400F is the stronger fit. You are getting 580.4% better Geekbench multi-core, backed by 6 cores and 12 threads. It also has the larger cache pool with 300% larger total L3 cache (12 MB vs 3 MB).

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

Core i5-10400F is the better buy right now. Core i5-10400F comes in at an unclear MSRP at $160 MSRP versus unclear MSRP, and it still gives you a 391.4% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (81.4 vs 0.0 PassMark/$), 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 i5-10400F makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2008), 300% larger total L3 cache (12 MB vs 3 MB), and more multi-core headroom with 6 cores / 12 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core 2 Duo T8300 vs Core i5-10400F Technical Specifications

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

Core 2 Duo T8300

The Core 2 Duo T8300 is manufactured by Intel. It was released in 10 January 2008 (17 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.4 GHz, with boost up to 2.4 GHz. L3 cache: 3 MB L2 Cache. L2 cache: 3 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 1,472 points. Launch price was $241.

Core i5-10400F

The Core i5-10400F is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 6 cores and 12 threads. Base frequency is 2.9 GHz, with boost up to 4.3 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 13,029 points. Launch price was $155.

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Processing Power

The Core 2 Duo T8300 packs 2 cores / 2 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i5-10400F has 4 more cores. Boost clocks reach 2.4 GHz on the Core 2 Duo T8300 versus 4.3 GHz on the Core i5-10400F — a 56.7% clock advantage for the Core i5-10400F (base: 2.4 GHz vs 2.9 GHz). The Core 2 Duo T8300 uses the Penryn (2008−2011) architecture (45 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the Core 2 Duo T8300 scores 1,472 against the Core i5-10400F's 13,029 — a 159.4% lead for the Core i5-10400F. Geekbench 6 single-core — the metric most relevant to gaming — records 450 vs 1,454, a 105.5% lead for the Core i5-10400F that directly translates to higher frame rates. Multi-core Geekbench: 850 vs 5,783 (148.7% advantage for the Core i5-10400F). L3 cache: 3 MB L2 Cache on the Core 2 Duo T8300 vs 12 MB (total) on the Core i5-10400F.

Feature	Core 2 Duo T8300	Core i5-10400F
Cores / Threads	2 / 2	6 / 12+200%
Boost Clock	2.4 GHz	4.3 GHz+79%
Base Clock	2.4 GHz	2.9 GHz+21%
L3 Cache	3 MB L2 Cache	12 MB (total)+300%
L2 Cache	3 MB	256K (per core)+8433%
Process	45 nm	14 nm-69%
Architecture	Penryn (2008−2011)	Comet Lake (2020−2025)
PassMark	1,472	13,029+785%
Cinebench R23 Multi	—	8,191
Geekbench 6 Single	450	1,454+223%
Geekbench 6 Multi	850	5,783+580%

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Memory & Platform

The Core 2 Duo T8300 uses the PGA478 socket (PCIe 1.1), while the Core i5-10400F uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-800 on the Core 2 Duo T8300 versus DDR4-2666 on the Core i5-10400F — the Core i5-10400F supports 233.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-10400F supports up to 128 GB of RAM compared to 8 GB — 1500% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Core 2 Duo T8300) vs 16 (Core i5-10400F) — the Core i5-10400F offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: GM965,PM965 (Core 2 Duo T8300) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F).

Feature	Core 2 Duo T8300	Core i5-10400F
Socket	PGA478	LGA1200
PCIe Generation	PCIe 1.1	PCIe 3.0+173%
Max RAM Speed	DDR2-800	DDR4-2666+233%
Max RAM Capacity	8 GB	128 GB+1500%
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	0	16

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Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x (Core 2 Duo T8300) vs VT-x, VT-d (Core i5-10400F). Primary use case: Core 2 Duo T8300 targets Legacy Laptop, Core i5-10400F targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.