Pentium G645 vs Phenom X3 8750

Pentium G645 vs Phenom X3 8750 Performance Spectrum

Pentium G645

2 / 2

1,450

+0.3%

1,445

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 G645 vs Phenom X3 8750 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 G645 vs Phenom X3 8750: Pros, Cons & Final Verdict

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

Pentium G645

2012

Why buy it

✅+50% larger total L3 cache (3 MB vs 2 MB).
✅Costs $115 less on MSRP ($80 MSRP vs $195 MSRP).
✅Delivers 144.6% more PassMark for each dollar spent, at 18.1 vs 7.4 PassMark/$ ($80 MSRP vs $195 MSRP).
✅Draws 65W instead of 95W, a 30W reduction.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Phenom X3 8750

2008

Why buy it

Trade-offs

❌Lower PassMark (1,445 vs 1,450).
❌Smaller total L3 cache (2 MB vs 3 MB).
❌Lower PassMark per dollar, at 7.4 vs 18.1 PassMark/$ ($195 MSRP vs $80 MSRP).
❌46.2% higher power demand at 95W vs 65W.

Quick Answers

So, is Pentium G645 better than Phenom X3 8750?

Yes. Pentium G645 is the better all-around CPU here. It gives you a 0.4% average FPS lead across 49 shared CPU game tests in our data, 0.3% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Pentium G645 is the better pick. According to our tests, it delivers 0.4% more average FPS across 49 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Pentium G645 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 50% larger total L3 cache (3 MB vs 2 MB).

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

Pentium G645 is the better buy right now. Pentium G645 comes in $115 cheaper on MSRP at $80 MSRP versus $195 MSRP, and it still gives you a 0.4% average FPS lead across 49 shared CPU game tests in our data. It is also 144.6% better value on MSRP (18.1 vs 7.4 PassMark/$), 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 G645 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2012 vs 2008), 50% larger total L3 cache (3 MB vs 2 MB), and more multi-core headroom with 2 cores / 2 threads instead of 3/3. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Pentium G645 vs Phenom X3 8750 Technical Specifications

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

Pentium G645

The Pentium G645 is manufactured by Intel. It was released in 2 September 2012 (13 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.9 GHz, with boost up to 2.9 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,450 points. Launch price was $80.

Phenom X3 8750

The Phenom X3 8750 is manufactured by AMD. It was released in 2009-01-01. It is based on the Toliman (2008) architecture. It features 3 cores and 3 threads. Max frequency: 2.4 GHz. L3 cache: 2 MB (total). L2 cache: 512 kB (per core). Built on 65 nm process technology. Socket: AM2+. Thermal design power (TDP): 95 Watt. Passmark benchmark score: 1,445 points. Launch price was $149.

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Processing Power

The Pentium G645 packs 2 cores / 2 threads, while the Phenom X3 8750 offers 3 cores / 3 threads — the Phenom X3 8750 has 1 more core. Boost clocks reach 2.9 GHz on the Pentium G645 versus 2.4 GHz on the Phenom X3 8750 — a 18.9% clock advantage for the Pentium G645. The Pentium G645 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Phenom X3 8750 uses Toliman (2008) (65 nm). In PassMark, the Pentium G645 scores 1,450 against the Phenom X3 8750's 1,445 — a 0.3% lead for the Pentium G645. L3 cache: 3 MB (total) on the Pentium G645 vs 2 MB (total) on the Phenom X3 8750.

Feature	Pentium G645	Phenom X3 8750
Cores / Threads	2 / 2	3 / 3+50%
Boost Clock	2.9 GHz+21%	2.4 GHz
Base Clock	2.9 GHz	—
L3 Cache	3 MB (total)+50%	2 MB (total)
L2 Cache	256 kB (per core)	512 kB (per core)+100%
Process	32 nm-51%	65 nm
Architecture	Sandy Bridge (2011−2013)	Toliman (2008)
PassMark	1,450	1,445

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Memory & Platform

The Pentium G645 uses the LGA1155 socket (PCIe 2.0), while the Phenom X3 8750 uses AM2+ (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Pentium G645	Phenom X3 8750
Socket	LGA1155	AM2+
PCIe Generation	PCIe 2.0	PCIe 2.0

💰

Value Analysis

At launch, the Pentium G645 was priced at $80, while the Phenom X3 8750 came in at $195. On launch pricing ($80 vs $195), Pentium G645 was $115 cheaper. In terms of value on MSRP (PassMark points per dollar), the Pentium G645 delivers 18.1 pts/$ vs 7.4 pts/$ for the Phenom X3 8750 — making the Pentium G645 the 83.9% better value option.

Feature	Pentium G645	Phenom X3 8750
MSRP	$80-59%	$195
Performance per Dollar	18.1+145%	7.4
Release Date	2012	2008

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