Pentium G640T vs Phenom II X2 550

Pentium G640T vs Phenom II X2 550 Performance Spectrum

Pentium G640T

2 / 2

1,139

0.0%

1,142

+0.3%

Mobile Athlon 64 3700+

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.

Pentium G640T vs Phenom II X2 550 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.

Pentium G640T vs Phenom II X2 550: Pros, Cons & Final Verdict

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

Pentium G640T

2012

Why buy it

✅Draws 35W instead of 80W, a 45W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Phenom II X2 550 across 50 shared CPU benchmark tests.
❌Lower PassMark (1,139 vs 1,142).
❌Smaller total L3 cache (3 MB vs 6 MB).
❌Launch MSRP is still $64 MSRP, while Phenom II X2 550 mostly shows up through inconsistent older-market listings.

Phenom II X2 550

2009

Why buy it

✅Better for gaming: +3.2% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (6 MB vs 3 MB).

Trade-offs

❌128.6% higher power demand at 80W vs 35W.

Quick Answers

So, is Phenom II X2 550 better than Pentium G640T?

Yes. Phenom II X2 550 is the better all-around CPU here. It gives you a 3.2% average FPS lead across 50 shared CPU game tests in our data and 0.3% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Phenom II X2 550 is the better pick. According to our tests, it delivers 3.2% 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, Phenom II X2 550 is the stronger fit. You are getting 0.3% better PassMark, backed by 2 cores and 2 threads. It also has the larger cache pool with 100% larger total L3 cache (6 MB vs 3 MB).

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

Phenom II X2 550 is still the much better call for a fresh build. Phenom II X2 550 comes in at an unclear MSRP at unclear MSRP versus $64 MSRP, and it still gives you a 3.2% average FPS lead across 50 shared CPU game tests in our data. Pentium G640T only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2012 platform. Even with 100.0% better value on paper (17.8 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1155.

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

Pentium G640T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 vs 2009). That makes it the safer long-term bet.

Pentium G640T vs Phenom II X2 550 Technical Specifications

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

Pentium G640T

The Pentium G640T is manufactured by Intel. It was released in 2007-01-01. It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.4 GHz, with boost up to 2.4 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,139 points. Launch price was $69.

Phenom II X2 550

The Phenom II X2 550 is manufactured by AMD. It was released in 4 November 2009 (16 years ago). It is based on the Callisto (2009−2010) architecture. It features 2 cores and 2 threads. Base frequency is 3.1 GHz, with boost up to 3.1 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: 1,142 points. Launch price was $133.

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Processing Power

Both the Pentium G640T and Phenom II X2 550 share an identical 2-core/2-thread configuration. Boost clocks reach 2.4 GHz on the Pentium G640T versus 3.1 GHz on the Phenom II X2 550 — a 25.5% clock advantage for the Phenom II X2 550 (base: 2.4 GHz vs 3.1 GHz). The Pentium G640T uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Phenom II X2 550 uses Callisto (2009−2010) (45 nm). In PassMark, the Pentium G640T scores 1,139 against the Phenom II X2 550's 1,142 — a 0.3% lead for the Phenom II X2 550. L3 cache: 3 MB (total) on the Pentium G640T vs 6 MB (total) on the Phenom II X2 550.

Feature	Pentium G640T	Phenom II X2 550
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.4 GHz	3.1 GHz+29%
Base Clock	2.4 GHz	3.1 GHz+29%
L3 Cache	3 MB (total)	6 MB (total)+100%
L2 Cache	256 kB (per core)	512 kB (per core)+100%
Process	32 nm-29%	45 nm
Architecture	Sandy Bridge (2011−2013)	Callisto (2009−2010)
PassMark	1,139	1,142

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Memory & Platform

The Pentium G640T uses the LGA1155 socket (PCIe 2.0), while the Phenom II X2 550 uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.