Athlon 64 TF-20 vs Pentium G645T

Athlon 64 TF-20 vs Pentium G645T Performance Spectrum

Athlon 64 TF-20

1 / 1

1,245

+0.6%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Pentium G645T

2 / 2

1,238

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 64 TF-20 vs Pentium G645T 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 64 TF-20 vs Pentium G645T: Pros, Cons & Final Verdict

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

Athlon 64 TF-20

2009

Why buy it

✅+0.6% higher PassMark.
✅Costs $14 less on MSRP ($50 MSRP vs $64 MSRP).
✅Delivers 28.7% more PassMark for each dollar spent, at 24.9 vs 19.3 PassMark/$ ($50 MSRP vs $64 MSRP).

Trade-offs

❌1362.9% higher power demand at 512W vs 35W.

Pentium G645T

2012

Why buy it

✅Draws 35W instead of 512W, a 477W reduction.

Trade-offs

❌Lower PassMark (1,238 vs 1,245).
❌Lower PassMark per dollar, at 19.3 vs 24.9 PassMark/$ ($64 MSRP vs $50 MSRP).

Quick Answers

So, is Pentium G645T better than Athlon 64 TF-20?

It depends on what you want from the system. For gaming, Pentium G645T is ahead with a 1.0% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Athlon 64 TF-20 pulls ahead with 0.6% better PassMark.

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

For streaming, content creation, and heavier multitasking, Athlon 64 TF-20 is the stronger fit. You are getting 0.6% better PassMark, backed by 1 cores and 1 threads.

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

Pentium G645T is still the much better call for a fresh build. Pentium G645T comes in 28.0% more expensive on MSRP at $64 MSRP versus $50 MSRP, and it still gives you a 1.0% average FPS lead across 50 shared CPU game tests in our data. Athlon 64 TF-20 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2009 platform. Even with 28.7% better value on paper (24.9 vs 19.3 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on S1g1.

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). That makes it the safer long-term bet.

Athlon 64 TF-20 vs Pentium G645T Technical Specifications

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

Athlon 64 TF-20

The Athlon 64 TF-20 is manufactured by AMD. It was released in 2009-01-01. It is based on the Sherman (2009) architecture. It features 1 cores and 1 threads. Max frequency: 1.6 GHz. L2 cache: 512 kB. Built on 65 nm process technology. Socket: S1g1. Thermal design power (TDP): 512 kB. Passmark benchmark score: 1,245 points. Launch price was $149.

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.

⚡

Processing Power

The Athlon 64 TF-20 packs 1 cores / 1 threads, while the Pentium G645T offers 2 cores / 2 threads — the Pentium G645T has 1 more core. Boost clocks reach 1.6 GHz on the Athlon 64 TF-20 versus 2.5 GHz on the Pentium G645T — a 43.9% clock advantage for the Pentium G645T. The Athlon 64 TF-20 uses the Sherman (2009) architecture (65 nm), while the Pentium G645T uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Athlon 64 TF-20 scores 1,245 against the Pentium G645T's 1,238 — a 0.6% lead for the Athlon 64 TF-20.

Feature	Athlon 64 TF-20	Pentium G645T
Cores / Threads	1 / 1	2 / 2+100%
Boost Clock	1.6 GHz	2.5 GHz+56%
Base Clock	—	2.5 GHz
L3 Cache	—	3 MB (total)
L2 Cache	512 kB+100%	256 kB (per core)
Process	65 nm	32 nm-51%
Architecture	Sherman (2009)	Sandy Bridge (2011−2013)
PassMark	1,245	1,238

🧠

Memory & Platform

The Athlon 64 TF-20 uses the S1g1 socket (PCIe 2.0), while the Pentium G645T uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Athlon 64 TF-20	Pentium G645T
Socket	S1g1	LGA1155
PCIe Generation	PCIe 2.0	PCIe 2.0
Max RAM Speed	DDR2-667	—
Max RAM Capacity	4 GB	—
RAM Channels	2	—
ECC Support	No	—

🔧

Advanced Features

Virtualization: false (Athlon 64 TF-20) / not specified (Pentium G645T).

Feature	Athlon 64 TF-20	Pentium G645T
Integrated GPU	No	—
Unlocked	No	—
AVX-512	No	—
Virtualization	false	—

💰

Value Analysis

At launch, the Athlon 64 TF-20 was priced at $50, while the Pentium G645T came in at $64. On launch pricing ($50 vs $64), Athlon 64 TF-20 was $14 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon 64 TF-20 delivers 24.9 pts/$ vs 19.3 pts/$ for the Pentium G645T — making the Athlon 64 TF-20 the 25.1% better value option.

Feature	Athlon 64 TF-20	Pentium G645T
MSRP	$50-22%	$64
Performance per Dollar	24.9+29%	19.3
Release Date	2009	2012

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