Core 2 Duo T9900 vs Core i3-380M

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 T9900 vs Core i3-380M 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 T9900 vs Core i3-380M: 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 T9900

2009

Why buy it

✅+100% larger total L3 cache (6 MB vs 3 MB).

Trade-offs

❌Lower PassMark (1,204 vs 1,212).
❌No integrated graphics, while Core i3-380M can still boot and troubleshoot without a discrete GPU.

Core i3-380M

2010

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel HD Graphics (Gen 1), while Core 2 Duo T9900 needs a discrete GPU.

Trade-offs

❌Smaller total L3 cache (3 MB vs 6 MB).
❌Launch MSRP is still $49 MSRP, while Core 2 Duo T9900 mostly shows up through inconsistent older-market listings.

Quick Answers

So, is Core i3-380M better than Core 2 Duo T9900?

Yes. Core i3-380M is the better all-around CPU here. It gives you a 0.2% average FPS lead across 41 shared CPU game tests in our data, 0.7% better 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 i3-380M is the better pick. According to our tests, it delivers 0.2% more average FPS across 41 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Core i3-380M is the stronger fit. You are getting 0.7% better PassMark, backed by 2 cores and 4 threads.

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

Core i3-380M is the better buy right now. Core i3-380M comes in at an unclear MSRP at $49 MSRP versus unclear MSRP, and it still gives you a 0.2% average FPS lead across 41 shared CPU game tests in our data. It is also 100.0% better value on MSRP (24.7 vs 0.0 PassMark/$), 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 i3-380M makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2009) and more multi-core headroom with 2 cores / 4 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 T9900 vs Core i3-380M Technical Specifications

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

Core 2 Duo T9900

The Core 2 Duo T9900 is manufactured by Intel. It was released in 2 June 2009 (16 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 3.06 GHz, with boost up to 0.07 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Memory support: DDR2, DDR3. Passmark benchmark score: 1,204 points. Launch price was $530.

Core i3-380M

The Core i3-380M is manufactured by Intel. It was released in 26 October 2010 (15 years ago). It is based on the Arrandale (2010−2011) architecture. It features 2 cores and 4 threads. Base frequency is 2.53 GHz, with boost up to 0.53 GHz. L3 cache: 3 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: PGA988. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,212 points. Launch price was $49.

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Processing Power

The Core 2 Duo T9900 packs 2 cores / 2 threads, matching the Core i3-380M's 2 cores. Boost clocks reach 0.07 GHz on the Core 2 Duo T9900 versus 0.53 GHz on the Core i3-380M — a 153.3% clock advantage for the Core i3-380M (base: 3.06 GHz vs 2.53 GHz). The Core 2 Duo T9900 uses the Penryn (2008−2011) architecture (45 nm), while the Core i3-380M uses Arrandale (2010−2011) (32 nm). In PassMark, the Core 2 Duo T9900 scores 1,204 against the Core i3-380M's 1,212 — a 0.7% lead for the Core i3-380M. L3 cache: 6 MB L2 Cache on the Core 2 Duo T9900 vs 3 MB (total) on the Core i3-380M.

Feature	Core 2 Duo T9900	Core i3-380M
Cores / Threads	2 / 2	2 / 4
Boost Clock	0.07 GHz	0.53 GHz+657%
Base Clock	3.06 GHz+21%	2.53 GHz
L3 Cache	6 MB L2 Cache+100%	3 MB (total)
L2 Cache	6 MB (total)	256K (per core)+4167%
Process	45 nm	32 nm-29%
Architecture	Penryn (2008−2011)	Arrandale (2010−2011)
PassMark	1,204	1,212
Geekbench 6 Single	—	450
Geekbench 6 Multi	—	1,100

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Memory & Platform

The Core 2 Duo T9900 uses the PGA478 socket (PCIe 1.1), while the Core i3-380M uses PGA988 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core 2 Duo T9900	Core i3-380M
Socket	PGA478	PGA988
PCIe Generation	PCIe 1.1	PCIe 2.0+82%
Max RAM Speed	—	DDR3-1066
Max RAM Capacity	—	8 GB
RAM Channels	—	2
ECC Support	—	No
PCIe Lanes	—	16

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Advanced Features

Virtualization: not specified (Core 2 Duo T9900) / VT-x (Core i3-380M). The Core i3-380M includes integrated graphics (Intel HD Graphics (Gen 1)), while the Core 2 Duo T9900 requires a dedicated GPU. Primary use case: Core i3-380M targets Legacy Laptop. Direct competitor: Core i3-380M rivals AMD Athlon II P320.