Core i3-2125 vs Core i5-3337U

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 i3-2125 vs Core i5-3337U 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 i3-2125 vs Core i5-3337U: Pros, Cons & Final Verdict

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

Core i3-2125

2011

Why buy it

✅Costs $91 less on MSRP ($134 MSRP vs $225 MSRP).
✅Delivers 67.0% more PassMark for each dollar spent, at 15.5 vs 9.3 PassMark/$ ($134 MSRP vs $225 MSRP).
✅Draws 65W instead of 512W, a 447W reduction.
✅Includes a boxed cooler (Yes), unlike Core i5-3337U.

Trade-offs

❌Lower PassMark (2,082 vs 2,093).

Core i5-3337U

2013

Why buy it

✅+0.5% higher PassMark.

Trade-offs

❌Lower PassMark per dollar, at 9.3 vs 15.5 PassMark/$ ($225 MSRP vs $134 MSRP).
❌687.7% higher power demand at 512W vs 65W.
❌No boxed cooler included, unlike Core i3-2125.

Quick Answers

So, is Core i3-2125 better than Core i5-3337U?

It depends on what you want from the system. For gaming, Core i3-2125 is ahead with a 0.4% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i5-3337U pulls ahead with 0.5% better PassMark.

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

For streaming, content creation, and heavier multitasking, Core i5-3337U is the stronger fit. You are getting 0.5% better PassMark, backed by 2 cores and 4 threads.

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

Core i3-2125 is the better buy right now. Core i3-2125 comes in $91 cheaper on MSRP at $134 MSRP versus $225 MSRP, and it still gives you a 0.4% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core i5-3337U is still stronger for heavier multi-core work with 0.5% better PassMark. It is also 67.0% better value on MSRP (15.5 vs 9.3 PassMark/$), 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 i5-3337U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2013 vs 2011) and more multi-core headroom with 2 cores / 4 threads instead of 2/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i3-2125 vs Core i5-3337U Technical Specifications

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

Core i3-2125

The Core i3-2125 is manufactured by Intel. It was released in 4 September 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 4 threads. Base frequency is 3.3 GHz, with boost up to 3.3 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: 2,082 points. Launch price was $170.

Core i5-3337U

The Core i5-3337U is manufactured by Intel. It was released in 1 January 2013 (12 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 2 cores and 4 threads. Base frequency is 1.8 GHz, with boost up to 2.7 GHz. L3 cache: 3 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: BGA1023. Thermal design power (TDP): 17 Watt. Memory support: DDR3/L/-RS 1333/1600. Passmark benchmark score: 2,093 points. Launch price was $225.

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Processing Power

Both the Core i3-2125 and Core i5-3337U share an identical 2-core/4-thread configuration. Boost clocks reach 3.3 GHz on the Core i3-2125 versus 2.7 GHz on the Core i5-3337U — a 20% clock advantage for the Core i3-2125 (base: 3.3 GHz vs 1.8 GHz). The Core i3-2125 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Core i5-3337U uses Ivy Bridge (2012−2013) (22 nm). In PassMark, the Core i3-2125 scores 2,082 against the Core i5-3337U's 2,093 — a 0.5% lead for the Core i5-3337U. Both processors carry 3 MB (total) of L3 cache.

Feature	Core i3-2125	Core i5-3337U
Cores / Threads	2 / 4	2 / 4
Boost Clock	3.3 GHz+22%	2.7 GHz
Base Clock	3.3 GHz+83%	1.8 GHz
L3 Cache	3 MB (total)	3 MB (total)
L2 Cache	256 kB (per core)	256K (per core)
Process	32 nm	22 nm-31%
Architecture	Sandy Bridge (2011−2013)	Ivy Bridge (2012−2013)
PassMark	2,082	2,093
Geekbench 6 Single	499	—

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Memory & Platform

The Core i3-2125 uses the LGA1155 socket (PCIe 2.0), while the Core i5-3337U uses BGA1023 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Core i3-2125 versus 1600 on the Core i5-3337U — the Core i5-3337U supports 20% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 32 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: H61,H67,P67,Z68,B65,Q65,Q67,B75,Q75,H77,Z75,Z77 (Core i3-2125) and HM76,UM77,QM77,QS77 (Core i5-3337U).

Feature	Core i3-2125	Core i5-3337U
Socket	LGA1155	BGA1023
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1333	1600+20%
Max RAM Capacity	32 GB	32 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	16

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Advanced Features

Neither processor supports overclocking. Virtualization support: VT-x, EPT (Core i3-2125) vs true (Core i5-3337U). Both include integrated graphics — HD Graphics 3000 (Core i3-2125) and Intel HD Graphics 4000 (Core i5-3337U) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i3-2125 targets Budget Desktop. Direct competitor: Core i3-2125 rivals A8-3850; Core i5-3337U rivals AMD A8-4555M.

Feature	Core i3-2125	Core i5-3337U
Integrated GPU	Yes	Yes
IGPU Model	HD Graphics 3000	Intel HD Graphics 4000
Unlocked	No	No
AVX-512	No	No
Virtualization	VT-x, EPT	true
Target Use	Budget Desktop	—

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Value Analysis

At launch, the Core i3-2125 was priced at $134, while the Core i5-3337U came in at $225. On launch pricing ($134 vs $225), Core i3-2125 was $91 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i3-2125 delivers 15.5 pts/$ vs 9.3 pts/$ for the Core i5-3337U — making the Core i3-2125 the 50.2% better value option.

Feature	Core i3-2125	Core i5-3337U
MSRP	$134-40%	$225
Performance per Dollar	15.5+67%	9.3
Release Date	2011	2013

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