Core 2 Duo T5850 vs Core 2 Quad Q9505

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 T5850 vs Core 2 Quad Q9505 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 T5850 vs Core 2 Quad Q9505: 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 T5850

2008

Why buy it

✅Draws 2W instead of 95W, a 93W reduction.

Trade-offs

❌Lower PassMark (2,161 vs 2,176).

Core 2 Quad Q9505

2009

Why buy it

✅+0.7% higher PassMark.

Trade-offs

❌Launch MSRP is still $213 MSRP, while Core 2 Duo T5850 mostly shows up through inconsistent older-market listings.
❌4650% higher power demand at 95W vs 2W.

Quick Answers

So, is Core 2 Quad Q9505 better than Core 2 Duo T5850?

It depends on what you want from the system. For gaming, Core 2 Duo T5850 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 Quad Q9505 pulls ahead with 0.7% better PassMark.

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

For streaming, content creation, and heavier multitasking, Core 2 Quad Q9505 is the stronger fit. You are getting 0.7% better PassMark, backed by 4 cores and 4 threads.

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

Core 2 Quad Q9505 is the better buy right now. Core 2 Quad Q9505 comes in at an unclear MSRP at $213 MSRP versus unclear MSRP, and it still gives you 0.7% better PassMark. The compromise is that Core 2 Duo T5850 is still the better pure gaming CPU with a 1.5% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (10.2 vs 0.0 PassMark/$), 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 2 Quad Q9505 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2008) and more multi-core headroom with 4 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 T5850 vs Core 2 Quad Q9505 Technical Specifications

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

Core 2 Duo T5850

The Core 2 Duo T5850 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. Max frequency: 2.1 GHz. L2 cache: 2 MB. Built on 65 nm process technology. Thermal design power (TDP): 2 MB. Passmark benchmark score: 2,161 points. Launch price was $249.

Core 2 Quad Q9505

The Core 2 Quad Q9505 is manufactured by Intel. It was released in 2008-01-01. It is based on the Yorkfield (2007−2009) architecture. It features 4 cores and 4 threads. Base frequency is 2.83 GHz, with boost up to 0.83 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 95 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 2,176 points. Launch price was $249.

⚡

Processing Power

The Core 2 Duo T5850 packs 2 cores / 2 threads, while the Core 2 Quad Q9505 offers 4 cores / 4 threads — the Core 2 Quad Q9505 has 2 more cores. Boost clocks reach 2.1 GHz on the Core 2 Duo T5850 versus 0.83 GHz on the Core 2 Quad Q9505 — a 86.7% clock advantage for the Core 2 Duo T5850. The Core 2 Duo T5850 uses the Merom (2006−2008) architecture (65 nm), while the Core 2 Quad Q9505 uses Yorkfield (2007−2009) (45 nm). In PassMark, the Core 2 Duo T5850 scores 2,161 against the Core 2 Quad Q9505's 2,176 — a 0.7% lead for the Core 2 Quad Q9505.

Feature	Core 2 Duo T5850	Core 2 Quad Q9505
Cores / Threads	2 / 2	4 / 4+100%
Boost Clock	2.1 GHz+153%	0.83 GHz
Base Clock	—	2.83 GHz
L3 Cache	—	6 MB L2 Cache
L2 Cache	2 MB	6 MB (total)+200%
Process	65 nm	45 nm-31%
Architecture	Merom (2006−2008)	Yorkfield (2007−2009)
PassMark	2,161	2,176