Athlon II Neo K345 vs Core 2 Duo T9800

Athlon II Neo K345 vs Core 2 Duo T9800 Performance Spectrum

Athlon II Neo K345

2 / 2

1,191

+0.2%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Core 2 Duo T9800

2 / 2

1,189

0.0%

Atom E3827

Celeron B820

Celeron P4505

Celeron Dual-Core T1700

About PassMark

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.

Athlon II Neo K345 vs Core 2 Duo T9800 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.

Athlon II Neo K345 vs Core 2 Duo T9800: Pros, Cons & Final Verdict

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

Athlon II Neo K345

2010

Why buy it

✅+0.2% higher PassMark.
✅Draws 1W instead of 6W, a 5W reduction.

Trade-offs

❌Launch MSRP is still $50 MSRP, while Core 2 Duo T9800 mostly shows up through inconsistent older-market listings.

Core 2 Duo T9800

2009

Why buy it

Trade-offs

❌Lower PassMark (1,189 vs 1,191).
❌500% higher power demand at 6W vs 1W.

Quick Answers

So, is Athlon II Neo K345 better than Core 2 Duo T9800?

It depends on what you want from the system. For gaming, Core 2 Duo T9800 is ahead with a 1.9% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Athlon II Neo K345 pulls ahead with 0.2% better PassMark.

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

For streaming, content creation, and heavier multitasking, Athlon II Neo K345 is the stronger fit. You are getting 0.2% better PassMark, backed by 2 cores and 2 threads.

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

Athlon II Neo K345 is the better buy right now. Athlon II Neo K345 comes in at an unclear MSRP at $50 MSRP versus unclear MSRP, and it still gives you 0.2% better PassMark. The compromise is that Core 2 Duo T9800 is still the better pure gaming CPU with a 1.9% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (23.8 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Athlon II Neo K345 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2010 vs 2009) and more multi-core headroom with 2 cores / 2 threads instead of 2/2. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Athlon II Neo K345 vs Core 2 Duo T9800 Technical Specifications

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

Athlon II Neo K345

The Athlon II Neo K345 is manufactured by AMD. It was released in 2009-01-01. It is based on the Champlain (2010−2011) architecture. It features 2 cores and 2 threads. Max frequency: 1.4 GHz. L2 cache: 1 MB. Built on 45 nm process technology. Socket: S1. Thermal design power (TDP): 1 MB. Memory support: DDR3. Passmark benchmark score: 1,191 points. Launch price was $149.

Core 2 Duo T9800

The Core 2 Duo T9800 is manufactured by Intel. It was released in 1 January 2009 (16 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.93 GHz, with boost up to 2.92 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 1,189 points. Launch price was $530.

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Processing Power

Both the Athlon II Neo K345 and Core 2 Duo T9800 share an identical 2-core/2-thread configuration. Boost clocks reach 1.4 GHz on the Athlon II Neo K345 versus 2.92 GHz on the Core 2 Duo T9800 — a 70.4% clock advantage for the Core 2 Duo T9800. The Athlon II Neo K345 uses the Champlain (2010−2011) architecture (45 nm), while the Core 2 Duo T9800 uses Penryn (2008−2011) (45 nm). In PassMark, the Athlon II Neo K345 scores 1,191 against the Core 2 Duo T9800's 1,189 — a 0.2% lead for the Athlon II Neo K345.

Feature	Athlon II Neo K345	Core 2 Duo T9800
Cores / Threads	2 / 2	2 / 2
Boost Clock	1.4 GHz	2.92 GHz+109%
Base Clock	—	2.93 GHz
L3 Cache	—	6 MB L2 Cache
L2 Cache	1 MB	6 MB+500%
Process	45 nm	45 nm
Architecture	Champlain (2010−2011)	Penryn (2008−2011)
PassMark	1,191	1,189

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Memory & Platform

The Athlon II Neo K345 uses the S1 socket (PCIe 2.0), while the Core 2 Duo T9800 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.