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 E6540 vs Pentium 987 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 E6540 vs Pentium 987: 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 E6540

2007

Why buy it

✅Better for gaming: +3.1% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (4 MB vs 2 MB).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (true), unlike Pentium 987.

Trade-offs

❌Lower PassMark per dollar, at 9.2 vs 11.1 PassMark/$ ($163 MSRP vs $134 MSRP).
❌282.4% higher power demand at 65W vs 17W.

Pentium 987

2013

Why buy it

✅Costs $29 less on MSRP ($134 MSRP vs $163 MSRP).
✅Delivers 21.0% more PassMark for each dollar spent, at 11.1 vs 9.2 PassMark/$ ($134 MSRP vs $163 MSRP).
✅Draws 17W instead of 65W, a 48W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core 2 Duo E6540 across 50 shared CPU benchmark tests.
❌Lower PassMark (1,487 vs 1,495).
❌Smaller total L3 cache (2 MB vs 4 MB).
❌No boxed cooler included, unlike Core 2 Duo E6540.

Quick Answers

So, is Core 2 Duo E6540 better than Pentium 987?

Yes. Core 2 Duo E6540 is the better all-around CPU here. It gives you a 3.1% average FPS lead across 50 shared CPU game tests in our data and 0.5% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core 2 Duo E6540 is the better pick. According to our tests, it delivers 3.1% 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 2 Duo E6540 is the stronger fit. You are getting 0.5% better PassMark. 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 2 Duo E6540 is the easy recommendation for a fresh desktop build. Core 2 Duo E6540 comes in 21.6% more expensive on MSRP at $163 MSRP versus $134 MSRP, and it still gives you a 3.1% average FPS lead across 50 shared CPU game tests in our data. Pentium 987 only looks good on raw value math because it is a cheap legacy laptop chip, not because it is a real desktop gaming recommendation. It simply does not keep up in modern games, especially when the gap is already 3.1% in the shared gaming data.

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

Pentium 987 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2013 vs 2007). That makes it the safer long-term bet.

Core 2 Duo E6540 vs Pentium 987 Technical Specifications

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

Core 2 Duo E6540

The Core 2 Duo E6540 is manufactured by Intel. It was released in 2008-01-01. It has 2 cores. Base frequency: 2.33 GHz. L3 cache: 4 MB L2 Cache. Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Passmark benchmark score: 1,495 points. Launch price was $249.

Pentium 987

The Pentium 987 is manufactured by Intel. It was released in 1 February 2013 (12 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 1.5 GHz, with boost up to 1.5 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: BGA1023. Thermal design power (TDP): 17 Watt. Memory support: DDR3. Passmark benchmark score: 1,487 points. Launch price was $134.

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Processing Power

Both the Core 2 Duo E6540 and Pentium 987 share an identical 2-core/2-thread configuration. The Pentium 987 is built on the Sandy Bridge (2011−2013) architecture. In PassMark, the Core 2 Duo E6540 scores 1,495 against the Pentium 987's 1,487 — a 0.5% lead for the Core 2 Duo E6540. L3 cache: 4 MB L2 Cache on the Core 2 Duo E6540 vs 2 MB (total) on the Pentium 987.

Feature	Core 2 Duo E6540	Pentium 987
Cores / Threads	2	2 / 2
Boost Clock	—	1.5 GHz
Base Clock	2.33 GHz+55%	1.5 GHz
L3 Cache	4 MB L2 Cache+100%	2 MB (total)
L2 Cache	—	256K (per core)
Process	65 nm	32 nm-51%
Architecture	—	Sandy Bridge (2011−2013)
PassMark	1,495	1,487

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Memory & Platform

The Core 2 Duo E6540 uses the LGA775 socket (PCIe 1.1), while the Pentium 987 uses BGA1023 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core 2 Duo E6540	Pentium 987
Socket	LGA775	BGA1023
PCIe Generation	PCIe 1.1	PCIe 2.0+82%
Max RAM Speed	1333	—
Max RAM Capacity	16	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: true (Core 2 Duo E6540) / not specified (Pentium 987). Direct competitor: Core 2 Duo E6540 rivals Athlon 64 X2 6000+.

Feature	Core 2 Duo E6540	Pentium 987
Integrated GPU	No	—
IGPU Model	None	—
Unlocked	No	—
AVX-512	No	—
Virtualization	true	—

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Value Analysis

At launch, the Core 2 Duo E6540 was priced at $163, while the Pentium 987 came in at $134. On launch pricing ($163 vs $134), Pentium 987 was $29 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core 2 Duo E6540 delivers 9.2 pts/$ vs 11.1 pts/$ for the Pentium 987 — making the Pentium 987 the 19% better value option.

Feature	Core 2 Duo E6540	Pentium 987
MSRP	$163	$134-18%
Performance per Dollar	9.2	11.1+21%
Release Date	2007	2013

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