Athlon II X4 640 vs Turion II Ultra M660

Athlon II X4 640 vs Turion II Ultra M660 Performance Spectrum

Athlon II X4 640

4 / 4

2,266

0.0%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Turion II Ultra M660

2 / 2

2,278

+0.5%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

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 640 vs Turion II Ultra M660 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 640 vs Turion II Ultra M660: 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 640

2010

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Yes), unlike Turion II Ultra M660.

Trade-offs

❌Lower PassMark (2,266 vs 2,278).
❌Launch MSRP is still $80 MSRP, while Turion II Ultra M660 mostly shows up through inconsistent older-market listings.
❌4650% higher power demand at 95W vs 2W.

Turion II Ultra M660

2009

Why buy it

✅+0.5% higher PassMark.
✅Draws 2W instead of 95W, a 93W reduction.

Trade-offs

❌No boxed cooler included, unlike Athlon II X4 640.

Quick Answers

So, is Athlon II X4 640 better than Turion II Ultra M660?

It depends on what you want from the system. For gaming, Athlon II X4 640 is ahead with a 0.6% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Turion II Ultra M660 pulls ahead with 0.5% better PassMark.

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

For streaming, content creation, and heavier multitasking, Turion II Ultra M660 is the stronger fit. You are getting 0.5% better PassMark, backed by 2 cores and 2 threads.

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

Athlon II X4 640 is the better buy right now. Athlon II X4 640 comes in at an unclear MSRP at $80 MSRP versus unclear MSRP, and it still gives you a 0.6% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Turion II Ultra M660 is still stronger for heavier multi-core work with 0.5% better PassMark. It is also 100.0% better value on MSRP (28.3 vs 0.0 PassMark/$), 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 640 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.

Athlon II X4 640 vs Turion II Ultra M660 Technical Specifications

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

Athlon II X4 640

The Athlon II X4 640 is manufactured by AMD. It was released in 11 May 2010 (15 years ago). It is based on the Propus (2009−2011) architecture. It features 4 cores and 4 threads. Base frequency is 3 GHz, with boost up to 3 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: 2,266 points. Launch price was $80.

Turion II Ultra M660

The Turion II Ultra M660 is manufactured by AMD. It was released in 2007-01-01. It is based on the Caspian (2009) architecture. It features 2 cores and 2 threads. Max frequency: 2.7 GHz. L2 cache: 2 MB. Built on 45 nm process technology. Socket: S1g3. Thermal design power (TDP): 2 MB. Memory support: DDR2. Passmark benchmark score: 2,278 points. Launch price was $69.

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Processing Power

The Athlon II X4 640 packs 4 cores / 4 threads, while the Turion II Ultra M660 offers 2 cores / 2 threads — the Athlon II X4 640 has 2 more cores. Boost clocks reach 3 GHz on the Athlon II X4 640 versus 2.7 GHz on the Turion II Ultra M660 — a 10.5% clock advantage for the Athlon II X4 640. The Athlon II X4 640 uses the Propus (2009−2011) architecture (45 nm), while the Turion II Ultra M660 uses Caspian (2009) (45 nm). In PassMark, the Athlon II X4 640 scores 2,266 against the Turion II Ultra M660's 2,278 — a 0.5% lead for the Turion II Ultra M660.

Feature	Athlon II X4 640	Turion II Ultra M660
Cores / Threads	4 / 4+100%	2 / 2
Boost Clock	3 GHz+11%	2.7 GHz
Base Clock	3 GHz	—
L3 Cache	0 kB	—
L2 Cache	512 kB (per core)	2 MB+300%
Process	45 nm	45 nm
Architecture	Propus (2009−2011)	Caspian (2009)
PassMark	2,266	2,278
Cinebench R23 Multi	1,471	—
Geekbench 6 Single	386	—
Geekbench 6 Multi	1,332	—

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Memory & Platform

The Athlon II X4 640 uses the AM3 socket (PCIe 2.0), while the Turion II Ultra M660 uses S1g3 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Athlon II X4 640 versus DDR2-800 on the Turion II Ultra M660 — the Athlon II X4 640 supports 66.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Athlon II X4 640 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 640) vs 0 (Turion II Ultra M660) — the Athlon II X4 640 offers 16 more lanes for additional GPUs or NVMe drives.

Feature	Athlon II X4 640	Turion II Ultra M660
Socket	AM3	S1g3
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR3-1333+67%	DDR2-800
Max RAM Capacity	16 GB+100%	8 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	0

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Advanced Features

Neither processor supports overclocking. Both support AMD-V virtualization. Primary use case: Athlon II X4 640 targets Budget, Turion II Ultra M660 targets Mobile. Direct competitor: Athlon II X4 640 rivals Core 2 Quad Q8300.