Core 2 Duo T5800 vs Core i7-920XM

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 i7-920XM 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 i7-920XM: 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

✅Draws 2W instead of 55W, a 53W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-920XM across 50 shared CPU benchmark tests.
❌Lower PassMark (2,000 vs 2,014).
❌Smaller total L3 cache (2 MB vs 8 MB).

Core i7-920XM

2009

Why buy it

✅Better for gaming: +5.2% higher average FPS across 50 shared CPU benchmark tests.
✅+300% larger total L3 cache (8 MB vs 2 MB).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌2650% higher power demand at 55W vs 2W.

Quick Answers

So, is Core i7-920XM better than Core 2 Duo T5800?

Yes. Core i7-920XM is the better all-around CPU here. It gives you a 5.2% average FPS lead across 50 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 i7-920XM is the better pick. According to our tests, it delivers 5.2% 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 i7-920XM is the stronger fit. You are getting 0.7% better PassMark, backed by 4 cores and 8 threads. It also has the larger cache pool with 300% larger total L3 cache (8 MB vs 2 MB).

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

Core i7-920XM still makes the most sense overall. Core i7-920XM comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 5.2% average FPS lead across 50 shared CPU game tests in our data.

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

Core i7-920XM makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2008), 300% larger total L3 cache (8 MB vs 2 MB), and more multi-core headroom with 4 cores / 8 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 T5800 vs Core i7-920XM 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 i7-920XM

The Core i7-920XM is manufactured by Intel. It was released in 23 September 2009 (16 years ago). It is based on the Clarksfield (2009−2010) architecture. It features 4 cores and 8 threads. Base frequency is 2 GHz, with boost up to 3.2 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 45 nm process technology. Socket: PGA988. Thermal design power (TDP): 55 Watt. Memory support: DDR3-1066, DDR3-1333. Passmark benchmark score: 2,014 points. Launch price was $1,054.

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Processing Power

The Core 2 Duo T5800 packs 2 cores / 2 threads, while the Core i7-920XM offers 4 cores / 8 threads — the Core i7-920XM has 2 more cores. Boost clocks reach 2 GHz on the Core 2 Duo T5800 versus 3.2 GHz on the Core i7-920XM — a 46.2% clock advantage for the Core i7-920XM (base: 2 GHz vs 2 GHz). The Core 2 Duo T5800 uses the Merom (2006−2008) architecture (65 nm), while the Core i7-920XM uses Clarksfield (2009−2010) (45 nm). In PassMark, the Core 2 Duo T5800 scores 2,000 against the Core i7-920XM's 2,014 — a 0.7% lead for the Core i7-920XM. L3 cache: 2 MB L2 Cache on the Core 2 Duo T5800 vs 8 MB (total) on the Core i7-920XM.

Feature	Core 2 Duo T5800	Core i7-920XM
Cores / Threads	2 / 2	4 / 8+100%
Boost Clock	2 GHz	3.2 GHz+60%
Base Clock	2 GHz	2 GHz
L3 Cache	2 MB L2 Cache	8 MB (total)+300%
L2 Cache	2 MB+700%	256 kB (per core)
Process	65 nm	45 nm-31%
Architecture	Merom (2006−2008)	Clarksfield (2009−2010)
PassMark	2,000	2,014

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Memory & Platform

The Core 2 Duo T5800 uses the PGA478 socket (PCIe 1.1), while the Core i7-920XM uses PGA988 (PCIe 2.0) — making them incompatible on the same motherboard.