Pentium G645T vs Phenom II X2 545

Pentium G645T vs Phenom II X2 545 Performance Spectrum

Pentium G645T

2 / 2

1,238

+0.4%

1,233

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.

Pentium G645T vs Phenom II X2 545 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 G645T vs Phenom II X2 545: Pros, Cons & Final Verdict

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

Pentium G645T

2012

Why buy it

✅+0.4% higher PassMark.
✅Draws 35W instead of 80W, a 45W reduction.

Trade-offs

❌Smaller total L3 cache (3 MB vs 6 MB).
❌Launch MSRP is still $64 MSRP, while Phenom II X2 545 mostly shows up through inconsistent older-market listings.

Phenom II X2 545

2009

Why buy it

✅+100% larger total L3 cache (6 MB vs 3 MB).

Trade-offs

❌Lower PassMark (1,233 vs 1,238).
❌128.6% higher power demand at 80W vs 35W.

Quick Answers

So, is Pentium G645T better than Phenom II X2 545?

It depends on what you want from the system. For gaming, Phenom II X2 545 is ahead with a 0.3% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Pentium G645T pulls ahead with 0.4% better PassMark. Phenom II X2 545 also has the bigger cache pool with 100% larger total L3 cache (6 MB vs 3 MB).

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

For streaming, content creation, and heavier multitasking, Pentium G645T is the stronger fit. You are getting 0.4% better PassMark, backed by 2 cores and 2 threads.

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

Pentium G645T is the better buy right now. Pentium G645T comes in at an unclear MSRP at $64 MSRP versus unclear MSRP, and it still gives you 0.4% better PassMark. The compromise is that Phenom II X2 545 is still the better pure gaming CPU with a 0.3% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (19.3 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Pentium G645T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 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.

Pentium G645T vs Phenom II X2 545 Technical Specifications

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

Pentium G645T

The Pentium G645T 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 2.5 GHz, with boost up to 2.5 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: 1,238 points. Launch price was $69.

Phenom II X2 545

The Phenom II X2 545 is manufactured by AMD. It was released in 1 June 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 (per core). 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: 1,233 points. Launch price was $50.

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Processing Power

Both the Pentium G645T and Phenom II X2 545 share an identical 2-core/2-thread configuration. Boost clocks reach 2.5 GHz on the Pentium G645T versus 3 GHz on the Phenom II X2 545 — a 18.2% clock advantage for the Phenom II X2 545 (base: 2.5 GHz vs 3 GHz). The Pentium G645T uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Phenom II X2 545 uses Callisto (2009−2010) (45 nm). In PassMark, the Pentium G645T scores 1,238 against the Phenom II X2 545's 1,233 — a 0.4% lead for the Pentium G645T. L3 cache: 3 MB (total) on the Pentium G645T vs 6 MB (per core) on the Phenom II X2 545.

Feature	Pentium G645T	Phenom II X2 545
Cores / Threads	2 / 2	2 / 2
Boost Clock	2.5 GHz	3 GHz+20%
Base Clock	2.5 GHz	3 GHz+20%
L3 Cache	3 MB (total)	6 MB (per core)+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	1,238	1,233

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Memory & Platform

The Pentium G645T uses the LGA1155 socket (PCIe 2.0), while the Phenom II X2 545 uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.