Core 2 Duo T5800 vs Core M-5Y71

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 T5800 vs Core M-5Y71 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 T5800 vs Core M-5Y71: 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 T5800

2008

Why buy it

✅+1.3% higher PassMark.
✅Draws 2W instead of 512W, a 510W reduction.

Trade-offs

❌Smaller total L3 cache (2 MB vs 4 MB).

Core M-5Y71

2014

Why buy it

✅+100% larger total L3 cache (4 MB vs 2 MB).

Trade-offs

❌Lower PassMark (1,975 vs 2,000).
❌Launch MSRP is still $281 MSRP, while Core 2 Duo T5800 mostly shows up through inconsistent older-market listings.
❌25500% higher power demand at 512W vs 2W.

Quick Answers

So, is Core M-5Y71 better than Core 2 Duo T5800?

It depends on what you want from the system. For gaming, Core M-5Y71 is ahead with a 1.5% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core 2 Duo T5800 pulls ahead with 1.3% better PassMark. Core M-5Y71 also has the bigger cache pool with 100% larger total L3 cache (4 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 T5800 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 M-5Y71 is the better buy right now. Core M-5Y71 comes in at an unclear MSRP at $281 MSRP versus unclear MSRP, and it still gives you a 1.5% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core 2 Duo T5800 is still stronger for heavier multi-core work with 1.3% better PassMark. It is also 100.0% better value on MSRP (7.0 vs 0.0 PassMark/$), 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 M-5Y71 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2008) and 100% larger total L3 cache (4 MB vs 2 MB). That makes it the safer long-term bet.

Core 2 Duo T5800 vs Core M-5Y71 Technical Specifications

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

Core 2 Duo T5800

The Core 2 Duo T5800 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. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 2,000 points. Launch price was $249.

Core M-5Y71

The Core M-5Y71 is manufactured by Intel. It was released in 27 October 2014 (11 years ago). It is based on the Broadwell-Y (2014) architecture. It features 2 cores and 4 threads. Base frequency is 1.2 GHz, with boost up to 2.9 GHz. L3 cache: 4 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1234. Thermal design power (TDP): 4.5 Watt. Memory support: DDR3. Passmark benchmark score: 1,975 points. Launch price was $281.

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Processing Power

The Core 2 Duo T5800 packs 2 cores / 2 threads, matching the Core M-5Y71's 2 cores. Boost clocks reach 2 GHz on the Core 2 Duo T5800 versus 2.9 GHz on the Core M-5Y71 — a 36.7% clock advantage for the Core M-5Y71 (base: 2 GHz vs 1.2 GHz). The Core 2 Duo T5800 uses the Merom (2006−2008) architecture (65 nm), while the Core M-5Y71 uses Broadwell-Y (2014) (14 nm). In PassMark, the Core 2 Duo T5800 scores 2,000 against the Core M-5Y71's 1,975 — a 1.3% lead for the Core 2 Duo T5800. L3 cache: 2 MB L2 Cache on the Core 2 Duo T5800 vs 4 MB (total) on the Core M-5Y71.

Feature	Core 2 Duo T5800	Core M-5Y71
Cores / Threads	2 / 2	2 / 4
Boost Clock	2 GHz	2.9 GHz+45%
Base Clock	2 GHz+67%	1.2 GHz
L3 Cache	2 MB L2 Cache	4 MB (total)+100%
L2 Cache	2 MB	256K (per core)+12700%
Process	65 nm	14 nm-78%
Architecture	Merom (2006−2008)	Broadwell-Y (2014)
PassMark	2,000+1%	1,975

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Memory & Platform

The Core 2 Duo T5800 uses the PGA478 socket (PCIe 1.1), while the Core M-5Y71 uses FCBGA1234 (PCIe 3.0) — making them incompatible on the same motherboard.