Core 2 Duo E4600 vs Phenom II X2 B55

Core 2 Duo E4600 vs Phenom II X2 B55 Performance Spectrum

Core 2 Duo E4600

2 / 2

1,235

+1.1%

1,222

0.0%

Ryzen Threadripper PRO 3955WX

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.

Core 2 Duo E4600 vs Phenom II X2 B55 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 E4600 vs Phenom II X2 B55: 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 E4600

2007

Why buy it

✅+1.1% higher PassMark.
✅Draws 65W instead of 80W, a 15W reduction.

Trade-offs

❌Launch MSRP is still $133 MSRP, while Phenom II X2 B55 mostly shows up through inconsistent older-market listings.

Phenom II X2 B55

2009

Why buy it

Trade-offs

❌Lower PassMark (1,222 vs 1,235).
❌23.1% higher power demand at 80W vs 65W.

Quick Answers

So, is Core 2 Duo E4600 better than Phenom II X2 B55?

It depends on what you want from the system. For gaming, Phenom II X2 B55 is ahead with a 2.1% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core 2 Duo E4600 pulls ahead with 1.1% better PassMark.

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

For streaming, content creation, and heavier multitasking, Core 2 Duo E4600 is the stronger fit. You are getting 1.1% better PassMark, backed by 2 cores and 2 threads.

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

Core 2 Duo E4600 is the better buy right now. Core 2 Duo E4600 comes in at an unclear MSRP at $133 MSRP versus unclear MSRP, and it still gives you 1.1% better PassMark. The compromise is that Phenom II X2 B55 is still the better pure gaming CPU with a 2.1% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (9.3 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Phenom II X2 B55 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2009 vs 2007). That makes it the safer long-term bet.

Core 2 Duo E4600 vs Phenom II X2 B55 Technical Specifications

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

Core 2 Duo E4600

The Core 2 Duo E4600 is manufactured by Intel. It was released in 2008-01-01. It is based on the Allendale (2006−2009) architecture. It features 2 cores and 2 threads. Base frequency is 2.4 GHz, with boost up to 2.4 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 65 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,235 points. Launch price was $249.

Phenom II X2 B55

The Phenom II X2 B55 is manufactured by AMD. It was released in 1 October 2009 (16 years ago). It is based on the Callisto (2009−2010) architecture. It features 2 cores and 2 threads. Base frequency is 3 GHz, with boost up to 3 GHz. L3 cache: 6 MB (total). L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 80 Watt. Memory support: DDR3. Passmark benchmark score: 1,222 points. Launch price was $48.

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Processing Power

Both the Core 2 Duo E4600 and Phenom II X2 B55 share an identical 2-core/2-thread configuration. Boost clocks reach 2.4 GHz on the Core 2 Duo E4600 versus 3 GHz on the Phenom II X2 B55 — a 22.2% clock advantage for the Phenom II X2 B55 (base: 2.4 GHz vs 3 GHz). The Core 2 Duo E4600 uses the Allendale (2006−2009) architecture (65 nm), while the Phenom II X2 B55 uses Callisto (2009−2010) (45 nm). In PassMark, the Core 2 Duo E4600 scores 1,235 against the Phenom II X2 B55's 1,222 — a 1.1% lead for the Core 2 Duo E4600. L3 cache: 0 kB on the Core 2 Duo E4600 vs 6 MB (total) on the Phenom II X2 B55.

Feature	Core 2 Duo E4600	Phenom II X2 B55
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.4 GHz	3 GHz+25%
Base Clock	2.4 GHz	3 GHz+25%
L3 Cache	0 kB	6 MB (total)
L2 Cache	2 MB+300%	512 kB (per core)
Process	65 nm	45 nm-31%
Architecture	Allendale (2006−2009)	Callisto (2009−2010)
PassMark	1,235+1%	1,222

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Memory & Platform

The Core 2 Duo E4600 uses the LGA775 socket (PCIe 1.1), while the Phenom II X2 B55 uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.