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 i3-2340UE vs Core i5-12400F 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 i3-2340UE vs Core i5-12400F: Pros, Cons & Final Verdict

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

Core i3-2340UE

2011

Why buy it

✅Draws 17W instead of 65W, a 48W reduction.
✅Integrated graphics onboard with HD Graphics 3000, while Core i5-12400F needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-12400F across 48 shared CPU benchmark tests.
❌Lower PassMark (1,545 vs 19,532).
❌Smaller total L3 cache (3 MB vs 18 MB).
❌Lower PassMark per dollar, at 7.7 vs 112.3 PassMark/$ ($200 MSRP vs $174 MSRP).
❌Older platform position on BGA1023, while Core i5-12400F moves to LGA1700 and DDR5.

Core i5-12400F

2022

Why buy it

✅Better for gaming: +445.0% higher average FPS across 48 shared CPU benchmark tests.
✅+500% larger total L3 cache (18 MB vs 3 MB).
✅Costs $26 less on MSRP ($174 MSRP vs $200 MSRP).
✅Delivers 1353.1% more PassMark for each dollar spent, at 112.3 vs 7.7 PassMark/$ ($174 MSRP vs $200 MSRP).
✅Newer platform on LGA1700 with DDR5 support instead of BGA1023 and older memory support.

Trade-offs

❌282.4% higher power demand at 65W vs 17W.
❌No integrated graphics, while Core i3-2340UE can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i5-12400F better than Core i3-2340UE?

Yes. Core i5-12400F is the better all-around CPU here. It gives you a 445.0% average FPS lead across 48 shared CPU game tests in our data, 1164.2% 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, Core i5-12400F is the better pick. According to our tests, it delivers 445.0% more average FPS across 48 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 1164.2% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 500% larger total L3 cache (18 MB vs 3 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 $26 cheaper on MSRP at $174 MSRP versus $200 MSRP, and it still gives you a 445.0% average FPS lead across 48 shared CPU game tests in our data. It is also 1353.1% better value on MSRP (112.3 vs 7.7 PassMark/$), 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 2011), a healthier platform with LGA1700 and DDR5 instead of BGA1023, 500% larger total L3 cache (18 MB vs 3 MB), and more multi-core headroom with 6 cores / 12 threads instead of 2/4. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i3-2340UE vs Core i5-12400F Technical Specifications

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

Core i3-2340UE

The Core i3-2340UE is manufactured by Intel. It was released in 1 June 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 4 threads. Max frequency: 1.3 GHz. L3 cache: 3 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: BGA1023. Thermal design power (TDP): 17 Watt. Memory support: DDR3. Passmark benchmark score: 1,545 points. Launch price was $250.

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.

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Processing Power

The Core i3-2340UE packs 2 cores / 4 threads, while the Core i5-12400F offers 6 cores / 12 threads — the Core i5-12400F has 4 more cores. Boost clocks reach 1.3 GHz on the Core i3-2340UE versus 4.4 GHz on the Core i5-12400F — a 108.8% clock advantage for the Core i5-12400F. The Core i3-2340UE uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Core i5-12400F uses Alder Lake-S (2022) (Intel 7 nm). In PassMark, the Core i3-2340UE scores 1,545 against the Core i5-12400F's 19,532 — a 170.7% lead for the Core i5-12400F. Geekbench 6 single-core — the metric most relevant to gaming — records 230 vs 1,700, a 152.3% lead for the Core i5-12400F that directly translates to higher frame rates. L3 cache: 3 MB (total) on the Core i3-2340UE vs 18 MB (total) on the Core i5-12400F.

Feature	Core i3-2340UE	Core i5-12400F
Cores / Threads	2 / 4	6 / 12+200%
Boost Clock	1.3 GHz	4.4 GHz+238%
Base Clock	—	2.5 GHz
L3 Cache	3 MB (total)	18 MB (total)+500%
L2 Cache	256K (per core)+20380%	1.25 MB (per core)
Process	32 nm	Intel 7 nm-78%
Architecture	Sandy Bridge (2011−2013)	Alder Lake-S (2022)
PassMark	1,545	19,532+1164%
Cinebench R23 Multi	—	12,380
Geekbench 6 Single	230	1,700+639%
Geekbench 6 Multi	—	657

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Memory & Platform

The Core i3-2340UE uses the BGA1023 socket (PCIe 2.0), while the Core i5-12400F uses LGA1700 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Core i3-2340UE versus DDR5-4800, DDR4-3200 on the Core i5-12400F — 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 16 GB — 700% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i3-2340UE) vs 20 (Core i5-12400F) — the Core i5-12400F offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM65,QM67 (Core i3-2340UE) and H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F).

Feature	Core i3-2340UE	Core i5-12400F
Socket	BGA1023	LGA1700
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1333	DDR5-4800, DDR4-3200+260%
Max RAM Capacity	16 GB	128 GB+700%
RAM Channels	2	2
ECC Support	Yes	No
PCIe Lanes	16	20+25%

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Advanced Features

Virtualization support: VT-x, EPT (Core i3-2340UE) vs VT-x, VT-d, EPT (Core i5-12400F). The Core i3-2340UE includes integrated graphics (HD Graphics 3000), while the Core i5-12400F requires a dedicated GPU. Primary use case: Core i3-2340UE targets Embedded, Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i3-2340UE rivals Embedded G-Series; Core i5-12400F rivals Ryzen 5 5600.

Feature	Core i3-2340UE	Core i5-12400F
Integrated GPU	Yes	No
IGPU Model	HD Graphics 3000	—
Unlocked	No	—
AVX-512	No	—
Virtualization	VT-x, EPT	VT-x, VT-d, EPT
Target Use	Embedded	Gaming Performance/Value

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Value Analysis

At launch, the Core i3-2340UE was priced at $200, while the Core i5-12400F came in at $174. On launch pricing ($200 vs $174), Core i5-12400F was $26 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i3-2340UE delivers 7.7 pts/$ vs 112.3 pts/$ for the Core i5-12400F — making the Core i5-12400F the 174.2% better value option.

Feature	Core i3-2340UE	Core i5-12400F
MSRP	$200	$174-13%
Performance per Dollar	7.7	112.3+1358%
Release Date	2011	2022

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