Core Duo T2300 vs Pentium G840

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 Duo T2300 vs Pentium G840 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 Duo T2300 vs Pentium G840: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Core Duo T2300

2006

Why buy it

✅+1% higher PassMark.
✅Draws 2W instead of 65W, a 63W reduction.

Trade-offs

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

Pentium G840

2011

Why buy it

Trade-offs

❌Lower PassMark (1,367 vs 1,380).
❌Launch MSRP is still $64 MSRP, while Core Duo T2300 mostly shows up through inconsistent older-market listings.
❌3150% higher power demand at 65W vs 2W.

Quick Answers

So, is Pentium G840 better than Core Duo T2300?

It depends on what you want from the system. For gaming, Pentium G840 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 Duo T2300 pulls ahead with 1% better PassMark.

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

For streaming, content creation, and heavier multitasking, Core Duo T2300 is the stronger fit. You are getting 1% better PassMark, backed by 2 cores and 2 threads.

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

Pentium G840 is the better buy right now. Pentium G840 comes in at an unclear MSRP at $64 MSRP versus unclear MSRP, and it still gives you a 1.5% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core Duo T2300 is still stronger for heavier multi-core work with 1% better PassMark. It is also 100.0% better value on MSRP (21.4 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Pentium G840 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2011 vs 2006). That makes it the safer long-term bet.

Core Duo T2300 vs Pentium G840 Technical Specifications

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

Core Duo T2300

The Core Duo T2300 is manufactured by Intel. It was released in 2008-01-01. It is based on the Yonah (2005−2006) architecture. It features 2 cores and 2 threads. Base frequency is 1.66 GHz, with boost up to 1.66 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 31 Watt. Memory support: DDR1. Passmark benchmark score: 1,380 points. Launch price was $249.

Pentium G840

The Pentium G840 is manufactured by Intel. It was released in 22 May 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,367 points. Launch price was $60.

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Processing Power

Both the Core Duo T2300 and Pentium G840 share an identical 2-core/2-thread configuration. Boost clocks reach 1.66 GHz on the Core Duo T2300 versus 2.8 GHz on the Pentium G840 — a 51.1% clock advantage for the Pentium G840 (base: 1.66 GHz vs 2.8 GHz). The Core Duo T2300 uses the Yonah (2005−2006) architecture (65 nm), while the Pentium G840 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Core Duo T2300 scores 1,380 against the Pentium G840's 1,367 — a 0.9% lead for the Core Duo T2300. L3 cache: 0 kB on the Core Duo T2300 vs 3 MB (total) on the Pentium G840.

Feature	Core Duo T2300	Pentium G840
Cores / Threads	2 / 2	2 / 2
Boost Clock	1.66 GHz	2.8 GHz+69%
Base Clock	1.66 GHz	2.8 GHz+69%
L3 Cache	0 kB	3 MB (total)
L2 Cache	2 MB+700%	256 kB (per core)
Process	65 nm	32 nm-51%
Architecture	Yonah (2005−2006)	Sandy Bridge (2011−2013)
PassMark	1,380	1,367

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Memory & Platform

The Core Duo T2300 uses the PGA478 socket (PCIe 1.1), while the Pentium G840 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.