Core 2 Duo T9900 vs Pentium E6600

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 T9900 vs Pentium E6600 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 T9900 vs Pentium E6600: 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 T9900

2009

Why buy it

✅+0.8% higher PassMark.
✅Draws 35W instead of 65W, a 30W reduction.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Pentium E6600

2010

Why buy it

Trade-offs

❌Lower PassMark (1,194 vs 1,204).
❌Launch MSRP is still $84 MSRP, while Core 2 Duo T9900 mostly shows up through inconsistent older-market listings.
❌85.7% higher power demand at 65W vs 35W.

Quick Answers

So, is Core 2 Duo T9900 better than Pentium E6600?

Yes. Core 2 Duo T9900 is the better all-around CPU here. It gives you a 2.2% average FPS lead across 49 shared CPU game tests in our data and 0.8% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

For gaming, this matchup is basically a tie in the data we have.

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

For streaming, content creation, and heavier multitasking, Core 2 Duo T9900 is the stronger fit. You are getting 0.8% better PassMark, backed by 2 cores and 2 threads.

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

Core 2 Duo T9900 is still the much better call for a fresh build. Core 2 Duo T9900 comes in at an unclear MSRP at unclear MSRP versus $84 MSRP, and it still gives you a 2.2% average FPS lead across 49 shared CPU game tests in our data. Pentium E6600 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2010 platform. Even with 100.0% better value on paper (14.2 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA775.

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

Pentium E6600 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2009). That makes it the safer long-term bet.

Core 2 Duo T9900 vs Pentium E6600 Technical Specifications

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

Core 2 Duo T9900

The Core 2 Duo T9900 is manufactured by Intel. It was released in 2 June 2009 (16 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 3.06 GHz, with boost up to 0.07 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Memory support: DDR2, DDR3. Passmark benchmark score: 1,204 points. Launch price was $530.

Pentium E6600

The Pentium E6600 is manufactured by Intel. It was released in 17 January 2010 (15 years ago). It is based on the Wolfdale (2008−2010) architecture. It features 2 cores and 2 threads. Base frequency is 3.06 GHz, with boost up to 0.07 GHz. L3 cache: 0 kB. L2 cache: 2 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,194 points. Launch price was $16.

⚡

Processing Power

Both the Core 2 Duo T9900 and Pentium E6600 share an identical 2-core/2-thread configuration. Boost clocks reach 0.07 GHz on the Core 2 Duo T9900 versus 0.07 GHz on the Pentium E6600 — identical boost frequencies (base: 3.06 GHz vs 3.06 GHz). The Core 2 Duo T9900 uses the Penryn (2008−2011) architecture (45 nm), while the Pentium E6600 uses Wolfdale (2008−2010) (45 nm). In PassMark, the Core 2 Duo T9900 scores 1,204 against the Pentium E6600's 1,194 — a 0.8% lead for the Core 2 Duo T9900. L3 cache: 6 MB L2 Cache on the Core 2 Duo T9900 vs 0 kB on the Pentium E6600.

Feature	Core 2 Duo T9900	Pentium E6600
Cores / Threads	2 / 2	2 / 2
Boost Clock	0.07 GHz	0.07 GHz
Base Clock	3.06 GHz	3.06 GHz
L3 Cache	6 MB L2 Cache	0 kB
L2 Cache	6 MB (total)+200%	2 MB (total)
Process	45 nm	45 nm
Architecture	Penryn (2008−2011)	Wolfdale (2008−2010)
PassMark	1,204	1,194

🧠

Memory & Platform

The Core 2 Duo T9900 uses the PGA478 socket (PCIe 1.1), while the Pentium E6600 uses LGA775 (PCIe 1.1) — making them incompatible on the same motherboard.