Athlon II X4 645 vs Core 2 Duo T6670

Athlon II X4 645 vs Core 2 Duo T6670 Performance Spectrum

Athlon II X4 645

4 / 4

2,375

+0.4%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Core 2 Duo T6670

2 / 2

2,365

0.0%

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 X4 645 vs Core 2 Duo T6670 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 X4 645 vs Core 2 Duo T6670: 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 X4 645

2010

Why buy it

✅Better for gaming: +5.6% higher average FPS across 50 shared CPU benchmark tests.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Core 2 Duo T6670.

Trade-offs

❌Launch MSRP is still $126 MSRP, while Core 2 Duo T6670 mostly shows up through inconsistent older-market listings.
❌4650% higher power demand at 95W vs 2W.

Core 2 Duo T6670

2009

Why buy it

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

Trade-offs

❌Worse for gaming: lower average FPS than Athlon II X4 645 across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (252 vs 1,374).
❌No boxed cooler included, unlike Athlon II X4 645.

Quick Answers

So, is Athlon II X4 645 better than Core 2 Duo T6670?

Yes. Athlon II X4 645 is the better all-around CPU here. It gives you a 5.6% average FPS lead across 50 shared CPU game tests in our data, 445.2% better Geekbench multi-core, 0.4% higher 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, Athlon II X4 645 is the better pick. According to our tests, it delivers 5.6% 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, Athlon II X4 645 is the stronger fit. You are getting 445.2% better Geekbench multi-core, backed by 4 cores and 4 threads.

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

Athlon II X4 645 is the better buy right now. Athlon II X4 645 comes in at an unclear MSRP at $126 MSRP versus unclear MSRP, and it still gives you a 5.6% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (18.8 vs 0.0 PassMark/$), 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 X4 645 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 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.

Athlon II X4 645 vs Core 2 Duo T6670 Technical Specifications

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

Athlon II X4 645

The Athlon II X4 645 is manufactured by AMD. It was released in 21 September 2010 (15 years ago). It is based on the Propus (2009−2011) architecture. It features 4 cores and 4 threads. Base frequency is 3.1 GHz, with boost up to 3.1 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 2,375 points. Launch price was $80.

Core 2 Duo T6670

The Core 2 Duo T6670 is manufactured by Intel. It was released in 2008-01-01. It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.2 GHz, with boost up to 2.2 GHz. L3 cache: 2 MB L2 Cache. L2 cache: 2 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 2,365 points. Launch price was $249.

⚡

Processing Power

The Athlon II X4 645 packs 4 cores / 4 threads, while the Core 2 Duo T6670 offers 2 cores / 2 threads — the Athlon II X4 645 has 2 more cores. Boost clocks reach 3.1 GHz on the Athlon II X4 645 versus 2.2 GHz on the Core 2 Duo T6670 — a 34% clock advantage for the Athlon II X4 645 (base: 3.1 GHz vs 2.2 GHz). The Athlon II X4 645 uses the Propus (2009−2011) architecture (45 nm), while the Core 2 Duo T6670 uses Penryn (2008−2011) (45 nm). In PassMark, the Athlon II X4 645 scores 2,375 against the Core 2 Duo T6670's 2,365 — a 0.4% lead for the Athlon II X4 645. Geekbench 6 single-core — the metric most relevant to gaming — records 399 vs 252, a 45.2% lead for the Athlon II X4 645 that directly translates to higher frame rates. Multi-core Geekbench: 1,374 vs 252 (138% advantage for the Athlon II X4 645). L3 cache: 0 kB on the Athlon II X4 645 vs 2 MB L2 Cache on the Core 2 Duo T6670.

Feature	Athlon II X4 645	Core 2 Duo T6670
Cores / Threads	4 / 4+100%	2 / 2
Boost Clock	3.1 GHz+41%	2.2 GHz
Base Clock	3.1 GHz+41%	2.2 GHz
L3 Cache	0 kB	2 MB L2 Cache
L2 Cache	512 kB (per core)	2 MB+300%
Process	45 nm	45 nm
Architecture	Propus (2009−2011)	Penryn (2008−2011)
PassMark	2,375	2,365
Cinebench R23 Multi	1,374	—
Geekbench 6 Single	399+58%	252
Geekbench 6 Multi	1,374+445%	252

🧠

Memory & Platform

The Athlon II X4 645 uses the AM3 socket (PCIe 2.0), while the Core 2 Duo T6670 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Athlon II X4 645 versus DDR3-1066 on the Core 2 Duo T6670 — the Athlon II X4 645 supports 25% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Athlon II X4 645 supports up to 16 GB of RAM compared to 8 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Athlon II X4 645) vs 0 (Core 2 Duo T6670) — the Athlon II X4 645 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD 700 Series,AMD 800 Series,AMD 900 Series (Athlon II X4 645) and GM45,PM45 (Core 2 Duo T6670).

Feature	Athlon II X4 645	Core 2 Duo T6670
Socket	AM3	PGA478
PCIe Generation	PCIe 2.0+82%	PCIe 1.1
Max RAM Speed	DDR3-1333+25%	DDR3-1066
Max RAM Capacity	16 GB+100%	8 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	0

🔧

Advanced Features

Virtualization support: Yes (Athlon II X4 645) vs VT-x (Core 2 Duo T6670). Primary use case: Athlon II X4 645 targets Desktop, Core 2 Duo T6670 targets Budget. Direct competitor: Core 2 Duo T6670 rivals Core 2 Duo T6600.