Athlon II X4 645 vs Celeron G5905T

CPU

GPU

Athlon II X4 645

4 Cores4 Thrd95 WWMax: 3.1 GHz2010

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Celeron G5905T

2 Cores2 Thrd35 WW2020

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Athlon II X4 645 vs Celeron G5905T Performance Spectrum

Athlon II X4 645

4 / 4

2,375

+0.8%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Celeron G5905T

2 / 2

2,356

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 II X4 645 vs Celeron G5905T 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 645 vs Celeron G5905T: 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 645

2010

Why buy it

✅+83.2% higher Geekbench multi-core.
✅Includes a boxed cooler (Yes), unlike Celeron G5905T.

Trade-offs

❌Lower Geekbench single-core performance for gaming (399 vs 748).
❌Lower PassMark per dollar, at 18.8 vs 47.1 PassMark/$ ($126 MSRP vs $50 MSRP).
❌171.4% higher power demand at 95W vs 35W.
❌No integrated graphics, while Celeron G5905T can still boot and troubleshoot without a discrete GPU.

Celeron G5905T

2020

Why buy it

✅+87.5% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅Costs $76 less on MSRP ($50 MSRP vs $126 MSRP).
✅Delivers 150.0% more PassMark for each dollar spent, at 47.1 vs 18.8 PassMark/$ ($50 MSRP vs $126 MSRP).
✅Draws 35W instead of 95W, a 60W reduction.
✅Integrated graphics onboard with UHD Graphics 610, while Athlon II X4 645 needs a discrete GPU.

Trade-offs

❌Lower Geekbench multi-core (750 vs 1,374).
❌No boxed cooler included, unlike Athlon II X4 645.

Quick Answers

So, is Celeron G5905T better than Athlon II X4 645?

It depends on what you want from the system. For gaming, Celeron G5905T is ahead with a 1.4% average FPS lead across 32 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Athlon II X4 645 pulls ahead with 83.2% better Geekbench multi-core.

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

For streaming, content creation, and heavier multitasking, Athlon II X4 645 is the stronger fit. You are getting 83.2% better Geekbench multi-core, backed by 4 cores and 4 threads.

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

Celeron G5905T is the better buy right now. Celeron G5905T comes in $76 cheaper on MSRP at $50 MSRP versus $126 MSRP, and it still gives you a 1.4% average FPS lead across 32 shared CPU game tests in our data. The compromise is that Athlon II X4 645 is still stronger for heavier multi-core work with 83.2% better Geekbench multi-core. It is also 150.0% better value on MSRP (47.1 vs 18.8 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Celeron G5905T makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2010). That makes it the safer long-term bet.

Athlon II X4 645 vs Celeron G5905T Technical Specifications

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

Athlon II X4 645

The Athlon II X4 645 is manufactured by AMD. It was released in 21 September 2010 (15 years ago). It is based on the Propus (2009−2011) architecture. It features 4 cores and 4 threads. Base frequency is 3.1 GHz, with boost up to 3.1 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: 2,375 points. Launch price was $80.

Celeron G5905T

The Celeron G5905T is manufactured by Intel. It was released in 2007-01-01. It features 2 cores and 2 threads. Base frequency: 3.3 GHz. L3 cache: 4 MB Intel® Smart Cache. Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 35 Watt. Memory support: DDR4-2666. Passmark benchmark score: 2,356 points. Launch price was $69.

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Processing Power

The Athlon II X4 645 packs 4 cores / 4 threads, while the Celeron G5905T offers 2 cores / 2 threads — the Athlon II X4 645 has 2 more cores. The Athlon II X4 645 is built on the Propus (2009−2011) architecture. In PassMark, the Athlon II X4 645 scores 2,375 against the Celeron G5905T's 2,356 — a 0.8% lead for the Athlon II X4 645. Geekbench 6 single-core — the metric most relevant to gaming — records 399 vs 748, a 60.9% lead for the Celeron G5905T that directly translates to higher frame rates. Multi-core Geekbench: 1,374 vs 750 (58.8% advantage for the Athlon II X4 645). L3 cache: 0 kB on the Athlon II X4 645 vs 4 MB Intel® Smart Cache on the Celeron G5905T.

Feature	Athlon II X4 645	Celeron G5905T
Cores / Threads	4 / 4+100%	2 / 2
Boost Clock	3.1 GHz	—
Base Clock	3.1 GHz	3.3 GHz+6%
L3 Cache	0 kB	4 MB Intel® Smart Cache
L2 Cache	512 kB (per core)	—
Process	45 nm	14 nm-69%
Architecture	Propus (2009−2011)	—
PassMark	2,375	2,356
Cinebench R23 Multi	1,374	—
Geekbench 6 Single	399	748+87%
Geekbench 6 Multi	1,374+83%	750

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Memory & Platform

The Athlon II X4 645 uses the AM3 socket (PCIe 2.0), while the Celeron G5905T uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Athlon II X4 645 versus DDR4-2666 on the Celeron G5905T — the Celeron G5905T supports 100% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron G5905T supports up to 128 GB of RAM compared to 16 GB — 700% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: AMD 700 Series,AMD 800 Series,AMD 900 Series (Athlon II X4 645) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Celeron G5905T).

Feature	Athlon II X4 645	Celeron G5905T
Socket	AM3	LGA1200
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1333	DDR4-2666+100%
Max RAM Capacity	16 GB	128 GB+700%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	16	16

🔧

Advanced Features

Virtualization support: Yes (Athlon II X4 645) vs VT-x (Celeron G5905T). The Celeron G5905T includes integrated graphics (UHD Graphics 610), while the Athlon II X4 645 requires a dedicated GPU. Primary use case: Athlon II X4 645 targets Desktop, Celeron G5905T targets Budget. Direct competitor: Celeron G5905T rivals Pentium Gold G6405T.

Feature	Athlon II X4 645	Celeron G5905T
Integrated GPU	No	Yes
IGPU Model	—	UHD Graphics 610
Unlocked	—	No
AVX-512	No	No
Virtualization	Yes	VT-x
Target Use	Desktop	Budget

💰

Value Analysis

At launch, the Athlon II X4 645 was priced at $126, while the Celeron G5905T came in at $50. On launch pricing ($126 vs $50), Celeron G5905T was $76 cheaper. In terms of value on MSRP (PassMark points per dollar), the Athlon II X4 645 delivers 18.8 pts/$ vs 47.1 pts/$ for the Celeron G5905T — making the Celeron G5905T the 85.7% better value option.

Feature	Athlon II X4 645	Celeron G5905T
MSRP	$126	$50-60%
Performance per Dollar	18.8	47.1+151%
Release Date	2010	2020

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