Xeon E3-1240L v3 vs Xeon E3-1280

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.

Xeon E3-1240L v3 vs Xeon E3-1280 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.

Xeon E3-1240L v3 vs Xeon E3-1280: Pros, Cons & Final Verdict

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

Xeon E3-1240L v3

2014

Why buy it

✅+1.2% higher PassMark.
✅Draws 25W instead of 95W, a 70W reduction.

Trade-offs

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

Xeon E3-1280

2011

Why buy it

Trade-offs

❌Lower PassMark (5,612 vs 5,681).
❌280% higher power demand at 95W vs 25W.

Quick Answers

So, is Xeon E3-1240L v3 better than Xeon E3-1280?

It depends on what you want from the system. For gaming, Xeon E3-1280 is ahead with a 1.5% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Xeon E3-1240L v3 pulls ahead with 1.2% better PassMark.

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

For streaming, content creation, and heavier multitasking, Xeon E3-1240L v3 is the stronger fit. You are getting 1.2% better PassMark, backed by 4 cores and 8 threads.

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

Xeon E3-1240L v3 still makes the most sense overall. Xeon E3-1240L v3 comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you 1.2% better PassMark.

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

Xeon E3-1240L v3 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2011) and more multi-core headroom with 4 cores / 8 threads instead of 4/8. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Xeon E3-1240L v3 vs Xeon E3-1280 Technical Specifications

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

Xeon E3-1240L v3

The Xeon E3-1240L v3 is manufactured by Intel. It was released in 11 May 2014 (11 years ago). It is based on the Haswell-WS (2013−2014) architecture. It features 4 cores and 8 threads. Base frequency is 2 GHz, with boost up to 3 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA1150. Thermal design power (TDP): 25 Watt. Memory support: DDR3L-1333, DDR3L-1600. Passmark benchmark score: 5,681 points. Launch price was $278.

Xeon E3-1280

The Xeon E3-1280 is manufactured by Intel. It was released in 3 April 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 4 cores and 8 threads. Base frequency is 3.5 GHz, with boost up to 3.9 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 5,612 points. Launch price was $450.

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Processing Power

Both the Xeon E3-1240L v3 and Xeon E3-1280 share an identical 4-core/8-thread configuration. Boost clocks reach 3 GHz on the Xeon E3-1240L v3 versus 3.9 GHz on the Xeon E3-1280 — a 26.1% clock advantage for the Xeon E3-1280 (base: 2 GHz vs 3.5 GHz). The Xeon E3-1240L v3 uses the Haswell-WS (2013−2014) architecture (22 nm), while the Xeon E3-1280 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Xeon E3-1240L v3 scores 5,681 against the Xeon E3-1280's 5,612 — a 1.2% lead for the Xeon E3-1240L v3. Both processors carry 8 MB (total) of L3 cache.

Feature	Xeon E3-1240L v3	Xeon E3-1280
Cores / Threads	4 / 8	4 / 8
Boost Clock	3 GHz	3.9 GHz+30%
Base Clock	2 GHz	3.5 GHz+75%
L3 Cache	8 MB (total)	8 MB (total)
L2 Cache	256K (per core)	256 kB (per core)
Process	22 nm-31%	32 nm
Architecture	Haswell-WS (2013−2014)	Sandy Bridge (2011−2013)
PassMark	5,681+1%	5,612

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Memory & Platform

The Xeon E3-1240L v3 uses the LGA1150 socket (PCIe 3.0), while the Xeon E3-1280 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.