Core 2 Duo T5670 vs Core i5-2405S

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 T5670 vs Core i5-2405S 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 T5670 vs Core i5-2405S: 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 T5670

2008

Why buy it

✅+1.3% higher PassMark.
✅Draws 2W instead of 65W, a 63W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-2405S across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (2 MB vs 6 MB).
❌No integrated graphics, while Core i5-2405S can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike Core i5-2405S.

Core i5-2405S

2011

Why buy it

✅Better for gaming: +4.7% higher average FPS across 50 shared CPU benchmark tests.
✅+200% larger total L3 cache (6 MB vs 2 MB).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel HD Graphics 3000, while Core 2 Duo T5670 needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Core 2 Duo T5670.

Trade-offs

❌Lower PassMark (3,397 vs 3,440).
❌Launch MSRP is still $309 MSRP, while Core 2 Duo T5670 mostly shows up through inconsistent older-market listings.
❌3150% higher power demand at 65W vs 2W.

Quick Answers

So, is Core i5-2405S better than Core 2 Duo T5670?

It depends on what you want from the system. For gaming, Core i5-2405S is ahead with a 4.7% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core 2 Duo T5670 pulls ahead with 1.3% better PassMark. Core i5-2405S also has the bigger cache pool with 200% larger total L3 cache (6 MB vs 2 MB).

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

For streaming, content creation, and heavier multitasking, Core 2 Duo T5670 is the stronger fit. You are getting 1.3% better PassMark, backed by 2 cores and 2 threads.

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

Core i5-2405S is the better buy right now. Core i5-2405S comes in at an unclear MSRP at $309 MSRP versus unclear MSRP, and it still gives you a 4.7% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core 2 Duo T5670 is still stronger for heavier multi-core work with 1.3% better PassMark. It is also 100.0% better value on MSRP (11.0 vs 0.0 PassMark/$), 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 i5-2405S makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2011 vs 2008) and 200% larger total L3 cache (6 MB vs 2 MB). That makes it the safer long-term bet.

Core 2 Duo T5670 vs Core i5-2405S Technical Specifications

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

Core 2 Duo T5670

The Core 2 Duo T5670 is manufactured by Intel. It was released in 2008-01-01. It is based on the Merom-2M (2008) architecture. It features 2 cores and 2 threads. Base frequency is 1.8 GHz, with boost up to 1.8 GHz. L3 cache: 2 MB L2 Cache. L2 cache: 2 MB. Built on 65 nm process technology. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 3,440 points. Launch price was $249.

Core i5-2405S

The Core i5-2405S is manufactured by Intel. It was released in 22 May 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 4 cores and 4 threads. Base frequency is 2.5 GHz, with boost up to 3.3 GHz. L3 cache: 6 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 3,397 points. Launch price was $472.

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Processing Power

The Core 2 Duo T5670 packs 2 cores / 2 threads, while the Core i5-2405S offers 4 cores / 4 threads — the Core i5-2405S has 2 more cores. Boost clocks reach 1.8 GHz on the Core 2 Duo T5670 versus 3.3 GHz on the Core i5-2405S — a 58.8% clock advantage for the Core i5-2405S (base: 1.8 GHz vs 2.5 GHz). The Core 2 Duo T5670 uses the Merom-2M (2008) architecture (65 nm), while the Core i5-2405S uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Core 2 Duo T5670 scores 3,440 against the Core i5-2405S's 3,397 — a 1.3% lead for the Core 2 Duo T5670. L3 cache: 2 MB L2 Cache on the Core 2 Duo T5670 vs 6 MB (total) on the Core i5-2405S.

Feature	Core 2 Duo T5670	Core i5-2405S
Cores / Threads	2 / 2	4 / 4+100%
Boost Clock	1.8 GHz	3.3 GHz+83%
Base Clock	1.8 GHz	2.5 GHz+39%
L3 Cache	2 MB L2 Cache	6 MB (total)+200%
L2 Cache	2 MB+700%	256 kB (per core)
Process	65 nm	32 nm-51%
Architecture	Merom-2M (2008)	Sandy Bridge (2011−2013)
PassMark	3,440+1%	3,397
Geekbench 6 Single	—	557
Geekbench 6 Multi	—	1,480

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Advanced Features

Virtualization: not specified (Core 2 Duo T5670) / VT-x / EPT (Core i5-2405S). The Core i5-2405S includes integrated graphics (Intel HD Graphics 3000), while the Core 2 Duo T5670 requires a dedicated GPU. Primary use case: Core i5-2405S targets Budget.