Core 2 Duo T5870 vs Core i7-640M

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 T5870 vs Core i7-640M 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 T5870 vs Core i7-640M: 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 T5870

2008

Why buy it

✅Draws 2W instead of 35W, a 33W reduction.

Trade-offs

❌Lower PassMark (2,089 vs 2,092).
❌Smaller total L3 cache (2 MB vs 4 MB).
❌No integrated graphics, while Core i7-640M can still boot and troubleshoot without a discrete GPU.

Core i7-640M

2010

Why buy it

✅+100% larger total L3 cache (4 MB vs 2 MB).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel HD Graphics (Ironlake), while Core 2 Duo T5870 needs a discrete GPU.

Trade-offs

❌1650% higher power demand at 35W vs 2W.

Quick Answers

So, is Core i7-640M better than Core 2 Duo T5870?

Yes. Core i7-640M is the better all-around CPU here. It gives you a 1.3% average FPS lead across 50 shared CPU game tests in our data, 0.1% 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 i7-640M is the better pick. According to our tests, it delivers 1.3% 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 i7-640M is the stronger fit. You are getting 0.1% better PassMark, backed by 2 cores and 4 threads. It also has the larger cache pool with 100% larger total L3 cache (4 MB vs 2 MB).

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

Core i7-640M still makes the most sense overall. Core i7-640M comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 1.3% average FPS lead across 50 shared CPU game tests in our data.

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

Core i7-640M makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2008), 100% larger total L3 cache (4 MB vs 2 MB), 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 T5870 vs Core i7-640M Technical Specifications

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

Core 2 Duo T5870

The Core 2 Duo T5870 is manufactured by Intel. It was released in 2008-01-01. It is based on the Merom (2006−2008) architecture. It features 2 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2 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: 2,089 points. Launch price was $249.

Core i7-640M

The Core i7-640M is manufactured by Intel. It was released in 1 September 2010 (15 years ago). It is based on the Arrandale (2010−2011) architecture. It features 2 cores and 4 threads. Base frequency is 2.8 GHz, with boost up to 3.46 GHz. L3 cache: 4 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: 2,092 points. Launch price was $346.

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Processing Power

The Core 2 Duo T5870 packs 2 cores / 2 threads, matching the Core i7-640M's 2 cores. Boost clocks reach 2 GHz on the Core 2 Duo T5870 versus 3.46 GHz on the Core i7-640M — a 53.5% clock advantage for the Core i7-640M (base: 2 GHz vs 2.8 GHz). The Core 2 Duo T5870 uses the Merom (2006−2008) architecture (65 nm), while the Core i7-640M uses Arrandale (2010−2011) (32 nm). In PassMark, the Core 2 Duo T5870 scores 2,089 against the Core i7-640M's 2,092 — a 0.1% lead for the Core i7-640M. L3 cache: 2 MB L2 Cache on the Core 2 Duo T5870 vs 4 MB (total) on the Core i7-640M.

Feature	Core 2 Duo T5870	Core i7-640M
Cores / Threads	2 / 2	2 / 4
Boost Clock	2 GHz	3.46 GHz+73%
Base Clock	2 GHz	2.8 GHz+40%
L3 Cache	2 MB L2 Cache	4 MB (total)+100%
L2 Cache	2 MB	256K (per core)+12700%
Process	65 nm	32 nm-51%
Architecture	Merom (2006−2008)	Arrandale (2010−2011)
PassMark	2,089	2,092
Geekbench 6 Single	203	—
Geekbench 6 Multi	314	—

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Memory & Platform

Maximum memory speed reaches DDR2-800 on the Core 2 Duo T5870 versus 1066 on the Core i7-640M — the Core i7-640M supports 33.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-640M supports up to 8 GB of RAM compared to 4 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Core 2 Duo T5870) vs 16 (Core i7-640M) — the Core i7-640M offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: GM965,GM45,PM45 (Core 2 Duo T5870) and HM55,HM57,QM57 (Core i7-640M).

Feature	Core 2 Duo T5870	Core i7-640M
Socket	—	PGA988
PCIe Generation	PCIe 1.1	PCIe 2.0+82%
Max RAM Speed	DDR2-800	1066+33%
Max RAM Capacity	4 GB	8 GB+100%
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 T5870) vs true (Core i7-640M). The Core i7-640M includes integrated graphics (Intel HD Graphics (Ironlake)), while the Core 2 Duo T5870 requires a dedicated GPU. Primary use case: Core 2 Duo T5870 targets Legacy Mobile. Direct competitor: Core i7-640M rivals Core 2 Duo T9600.