Core i5-12400F vs Phenom II X6 1075T

CPU

GPU

Core i5-12400F

6 Cores12 Thrd65 WWMax: 4.4 GHz2022

Core family

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Phenom II X6 1075T

6 Cores6 Thrd125 WWMax: 3.5 GHz2010

Similar parts

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Core i5-12400F vs Phenom II X6 1075T Performance Spectrum

Core i5-12400F

6 / 12

19,532

+458.1%

3,500

0.0%

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.

Core i5-12400F vs Phenom II X6 1075T 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.

Core i5-12400F vs Phenom II X6 1075T: Pros, Cons & Final Verdict

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

Core i5-12400F

2022

Why buy it

✅Better for gaming: +190.1% higher average FPS across 50 shared CPU benchmark tests.
✅+200% larger total L3 cache (18 MB vs 6 MB).
✅Costs $71 less on MSRP ($174 MSRP vs $245 MSRP).
✅Delivers 685.8% more PassMark for each dollar spent, at 112.3 vs 14.3 PassMark/$ ($174 MSRP vs $245 MSRP).
✅Draws 65W instead of 125W, a 60W reduction.

Trade-offs

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

Phenom II X6 1075T

2010

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-12400F across 50 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (1,896 vs 12,380).
❌Smaller total L3 cache (6 MB vs 18 MB).
❌Lower PassMark per dollar, at 14.3 vs 112.3 PassMark/$ ($245 MSRP vs $174 MSRP).
❌92.3% higher power demand at 125W vs 65W.

Quick Answers

So, is Core i5-12400F better than Phenom II X6 1075T?

Yes. Core i5-12400F is the better all-around CPU here. It gives you a 190.1% average FPS lead across 50 shared CPU game tests in our data, 553% better Cinebench R23 multi-core, 458.1% higher 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, Core i5-12400F is the better pick. According to our tests, it delivers 190.1% 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, Core i5-12400F is the stronger fit. You are getting 553% better Cinebench R23 multi-core, backed by 6 cores and 12 threads. It also has the larger cache pool with 200% larger total L3 cache (18 MB vs 6 MB).

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

Core i5-12400F is the better buy right now. Core i5-12400F comes in $71 cheaper on MSRP at $174 MSRP versus $245 MSRP, and it still gives you a 190.1% average FPS lead across 50 shared CPU game tests in our data. It is also 685.8% better value on MSRP (112.3 vs 14.3 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i5-12400F makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2010), a healthier platform with LGA1700 and DDR5 instead of AM3, 200% larger total L3 cache (18 MB vs 6 MB), and more multi-core headroom with 6 cores / 12 threads instead of 6/6. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i5-12400F vs Phenom II X6 1075T Technical Specifications

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

Core i5-12400F

The Core i5-12400F is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 6 cores and 12 threads. Base frequency is 2.5 GHz, with boost up to 4.4 GHz. L3 cache: 18 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 65 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 19,532 points. Launch price was $180.

Phenom II X6 1075T

The Phenom II X6 1075T is manufactured by AMD. It was released in 21 September 2010 (15 years ago). It is based on the Thuban (2010) architecture. It features 6 cores and 6 threads. Base frequency is 3 GHz, with boost up to 3.5 GHz. L3 cache: 6 MB (total). L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 125 Watt. Memory support: DDR3. Passmark benchmark score: 3,500 points. Launch price was $260.

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Processing Power

The Core i5-12400F packs 6 cores / 12 threads, matching the Phenom II X6 1075T's 6 cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 3.5 GHz on the Phenom II X6 1075T — a 22.8% clock advantage for the Core i5-12400F (base: 2.5 GHz vs 3 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Phenom II X6 1075T uses Thuban (2010) (45 nm). In PassMark, the Core i5-12400F scores 19,532 against the Phenom II X6 1075T's 3,500 — a 139.2% lead for the Core i5-12400F. Cinebench R23 multi-core: 12,380 vs 1,896 (146.9% advantage for the Core i5-12400F). Geekbench 6 single-core — the metric most relevant to gaming — records 1,700 vs 679, a 85.8% lead for the Core i5-12400F that directly translates to higher frame rates. Multi-core Geekbench: 657 vs 1,960 (99.6% advantage for the Phenom II X6 1075T). L3 cache: 18 MB (total) on the Core i5-12400F vs 6 MB (total) on the Phenom II X6 1075T.

Feature	Core i5-12400F	Phenom II X6 1075T
Cores / Threads	6 / 12	6 / 6
Boost Clock	4.4 GHz+26%	3.5 GHz
Base Clock	2.5 GHz	3 GHz+20%
L3 Cache	18 MB (total)+200%	6 MB (total)
L2 Cache	1.25 MB (per core)+150%	512 kB (per core)
Process	Intel 7 nm-84%	45 nm
Architecture	Alder Lake-S (2022)	Thuban (2010)
PassMark	19,532+458%	3,500
Cinebench R23 Multi	12,380+553%	1,896
Geekbench 6 Single	1,700+150%	679
Geekbench 6 Multi	657	1,960+198%

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Memory & Platform

The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the Phenom II X6 1075T uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800, DDR4-3200 on the Core i5-12400F versus DDR3-1333 on the Phenom II X6 1075T — the Core i5-12400F supports 260.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-12400F supports up to 128 GB of RAM compared to 32 GB — 300% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i5-12400F) vs 16 (Phenom II X6 1075T) — the Core i5-12400F offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F) and 880G,890GX,890FX,970,990FX (Phenom II X6 1075T).

Feature	Core i5-12400F	Phenom II X6 1075T
Socket	LGA1700	AM3
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR5-4800, DDR4-3200+260%	DDR3-1333
Max RAM Capacity	128 GB+300%	32 GB
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	20+25%	16

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Advanced Features

Virtualization support: VT-x, VT-d, EPT (Core i5-12400F) vs AMD-V (Phenom II X6 1075T). Primary use case: Core i5-12400F targets Gaming Performance/Value, Phenom II X6 1075T targets Gaming. Direct competitor: Core i5-12400F rivals Ryzen 5 5600; Phenom II X6 1075T rivals Core i5-750.

Feature	Core i5-12400F	Phenom II X6 1075T
Integrated GPU	No	No
Unlocked	—	Yes
AVX-512	—	No
Virtualization	VT-x, VT-d, EPT	AMD-V
Target Use	Gaming Performance/Value	Gaming

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Value Analysis

At launch, the Core i5-12400F was priced at $174, while the Phenom II X6 1075T came in at $245. On launch pricing ($174 vs $245), Core i5-12400F was $71 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400F delivers 112.3 pts/$ vs 14.3 pts/$ for the Phenom II X6 1075T — making the Core i5-12400F the 154.8% better value option.

Feature	Core i5-12400F	Phenom II X6 1075T
MSRP	$174-29%	$245
Performance per Dollar	112.3+685%	14.3
Release Date	2022	2010

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