Xeon E3-1276 v3 vs Xeon E5-2450

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 E3-1276 v3 vs Xeon E5-2450 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 E3-1276 v3 vs Xeon E5-2450: Pros, Cons & Final Verdict

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

Xeon E3-1276 v3

2014

Why buy it

✅+0.1% higher PassMark.
✅Costs $481 less on MSRP ($213 MSRP vs $694 MSRP).
✅Delivers 226.2% more PassMark for each dollar spent, at 35.4 vs 10.9 PassMark/$ ($213 MSRP vs $694 MSRP).
✅Draws 84W instead of 95W, a 11W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5-2450 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (8 MB vs 20 MB).

Xeon E5-2450

2012

Why buy it

✅Better for gaming: +3.3% higher average FPS across 50 shared CPU benchmark tests.
✅+150% larger total L3 cache (20 MB vs 8 MB).

Trade-offs

❌Lower PassMark (7,534 vs 7,543).
❌Lower PassMark per dollar, at 10.9 vs 35.4 PassMark/$ ($694 MSRP vs $213 MSRP).

Quick Answers

So, is Xeon E3-1276 v3 better than Xeon E5-2450?

It depends on what you want from the system. For gaming, Xeon E5-2450 is ahead with a 3.3% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Xeon E3-1276 v3 pulls ahead with 0.1% better PassMark. Xeon E5-2450 also has the bigger cache pool with 150% larger total L3 cache (20 MB vs 8 MB).

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

For streaming, content creation, and heavier multitasking, Xeon E3-1276 v3 is the stronger fit. You are getting 0.1% better PassMark, backed by 4 cores and 8 threads.

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

Xeon E3-1276 v3 is the better buy right now. Xeon E3-1276 v3 comes in $481 cheaper on MSRP at $213 MSRP versus $694 MSRP, and it still gives you 0.1% better PassMark. The compromise is that Xeon E5-2450 is still the better pure gaming CPU with a 3.3% average FPS lead across 50 shared CPU game tests in our data. It is also 226.2% better value on MSRP (35.4 vs 10.9 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Xeon E3-1276 v3 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2012) and more multi-core headroom with 4 cores / 8 threads instead of 8/16. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Xeon E3-1276 v3 vs Xeon E5-2450 Technical Specifications

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

Xeon E3-1276 v3

The Xeon E3-1276 v3 is manufactured by Intel. It was released in 2015-01-01. It features 4 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 4 GHz. L3 cache: 8 MB Intel® Smart Cache. Built on 22 nm process technology. Socket: LGA1150. Thermal design power (TDP): 84 Watt. Memory support: DDR3L-1333, DDR3L-1600. Passmark benchmark score: 7,543 points. Launch price was $800.

Xeon E5-2450

The Xeon E5-2450 is manufactured by Intel. It was released in 14 May 2012 (13 years ago). It is based on the Sandy Bridge-EN (2012) architecture. It features 8 cores and 16 threads. Base frequency is 2.1 GHz, with boost up to 2.9 GHz. L3 cache: 20480 kB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1356. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 7,534 points. Launch price was $500.

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Processing Power

The Xeon E3-1276 v3 packs 4 cores / 8 threads, while the Xeon E5-2450 offers 8 cores / 16 threads — the Xeon E5-2450 has 4 more cores. Boost clocks reach 4 GHz on the Xeon E3-1276 v3 versus 2.9 GHz on the Xeon E5-2450 — a 31.9% clock advantage for the Xeon E3-1276 v3 (base: 3.6 GHz vs 2.1 GHz). The Xeon E5-2450 is built on the Sandy Bridge-EN (2012) architecture. In PassMark, the Xeon E3-1276 v3 scores 7,543 against the Xeon E5-2450's 7,534 — a 0.1% lead for the Xeon E3-1276 v3. L3 cache: 8 MB Intel® Smart Cache on the Xeon E3-1276 v3 vs 20480 kB (total) on the Xeon E5-2450.

Feature	Xeon E3-1276 v3	Xeon E5-2450
Cores / Threads	4 / 8	8 / 16+100%
Boost Clock	4 GHz+38%	2.9 GHz
Base Clock	3.6 GHz+71%	2.1 GHz
L3 Cache	8 MB Intel® Smart Cache	20480 kB (total)+150%
L2 Cache	—	256 kB (per core)
Process	22 nm-31%	32 nm
Architecture	—	Sandy Bridge-EN (2012)
PassMark	7,543	7,534

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Memory & Platform

The Xeon E3-1276 v3 uses the LGA1150 socket (PCIe 3.0), while the Xeon E5-2450 uses LGA1356 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Xeon E3-1276 v3	Xeon E5-2450
Socket	LGA1150	LGA1356
PCIe Generation	PCIe 3.0+50%	PCIe 2.0

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Value Analysis

At launch, the Xeon E3-1276 v3 was priced at $213, while the Xeon E5-2450 came in at $694. On launch pricing ($213 vs $694), Xeon E3-1276 v3 was $481 cheaper. In terms of value on MSRP (PassMark points per dollar), the Xeon E3-1276 v3 delivers 35.4 pts/$ vs 10.9 pts/$ for the Xeon E5-2450 — making the Xeon E3-1276 v3 the 106.1% better value option.

Feature	Xeon E3-1276 v3	Xeon E5-2450
MSRP	$213-69%	$694
Performance per Dollar	35.4+225%	10.9
Release Date	2014	2012

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