Core i7-5775R vs Xeon E3-1271 v3

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 i7-5775R vs Xeon E3-1271 v3 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 i7-5775R vs Xeon E3-1271 v3: Pros, Cons & Final Verdict

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

Core i7-5775R

2015

Why buy it

✅Better for gaming: +4.6% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 65W instead of 80W, a 15W reduction.

Trade-offs

❌Smaller total L3 cache (6 MB vs 8 MB).
❌Less compelling for workstation-style loads than Xeon E3-1271 v3, which brings 4 cores / 8 threads and 16 PCIe lanes.

Xeon E3-1271 v3

2014

Why buy it

✅+33.3% larger total L3 cache (8 MB vs 6 MB).
✅Better for workstations and heavier parallel workloads: 4 cores / 8 threads, plus 16 PCIe lanes vs 0.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-5775R across 50 shared CPU benchmark tests.
❌Lower PassMark (7,504 vs 7,598).
❌Launch MSRP is still $727 MSRP, while Core i7-5775R mostly shows up through inconsistent older-market listings.
❌23.1% higher power demand at 80W vs 65W.

Quick Answers

So, is Core i7-5775R better than Xeon E3-1271 v3?

Not really, because they are built for different jobs. Xeon E3-1271 v3 makes more sense for workstation-style multi-core throughput, while Core i7-5775R is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Core i7-5775R is the better pick. According to our tests, it delivers 4.6% 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 i7-5775R is the stronger fit. You are getting 1.3% better PassMark, backed by 4 cores and 8 threads.

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

Core i7-5775R is still the faster CPU overall, but Xeon E3-1271 v3 is easier to justify if budget matters more than peak performance. Core i7-5775R comes in at an unclear MSRP at unclear MSRP versus $727 MSRP, and it still gives you a 4.6% average FPS lead across 50 shared CPU game tests in our data. Xeon E3-1271 v3 is also 100.0% better value on MSRP (10.3 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Core i7-5775R makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2015 vs 2014) 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.

Core i7-5775R vs Xeon E3-1271 v3 Technical Specifications

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

Core i7-5775R

The Core i7-5775R is manufactured by Intel. It was released in 15 May 2015 (10 years ago). It is based on the Broadwell (2015−2019) architecture. It features 4 cores and 8 threads. Base frequency is 3.3 GHz, with boost up to 3.8 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: BGA1364. Thermal design power (TDP): 65 Watt. Memory support: DDR3L-1333, DDR3L-1600, DDR3L-1866. Passmark benchmark score: 7,598 points. Launch price was $149.

Xeon E3-1271 v3

The Xeon E3-1271 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): 80 Watt. Memory support: DDR3L-1333, DDR3L-1600. Passmark benchmark score: 7,504 points. Launch price was $800.

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Processing Power

Both the Core i7-5775R and Xeon E3-1271 v3 share an identical 4-core/8-thread configuration. Boost clocks reach 3.8 GHz on the Core i7-5775R versus 4 GHz on the Xeon E3-1271 v3 — a 5.1% clock advantage for the Xeon E3-1271 v3 (base: 3.3 GHz vs 3.6 GHz). The Core i7-5775R is built on the Broadwell (2015−2019) architecture. In PassMark, the Core i7-5775R scores 7,598 against the Xeon E3-1271 v3's 7,504 — a 1.2% lead for the Core i7-5775R. L3 cache: 6 MB (total) on the Core i7-5775R vs 8 MB Intel® Smart Cache on the Xeon E3-1271 v3.

Feature	Core i7-5775R	Xeon E3-1271 v3
Cores / Threads	4 / 8	4 / 8
Boost Clock	3.8 GHz	4 GHz+5%
Base Clock	3.3 GHz	3.6 GHz+9%
L3 Cache	6 MB (total)	8 MB Intel® Smart Cache+33%
L2 Cache	256K (per core)	—
Process	14 nm-36%	22 nm
Architecture	Broadwell (2015−2019)	—
PassMark	7,598+1%	7,504
Geekbench 6 Single	—	1,308
Geekbench 6 Multi	—	4,328

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Memory & Platform

The Core i7-5775R uses the BGA1364 socket (PCIe 3.0), while the Xeon E3-1271 v3 uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i7-5775R	Xeon E3-1271 v3
Socket	BGA1364	LGA1150
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	—	DDR3-1600
Max RAM Capacity	—	32 GB
RAM Channels	—	2
ECC Support	—	Yes
PCIe Lanes	—	16

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Advanced Features

Virtualization: not specified (Core i7-5775R) / VT-x, VT-d, EPT (Xeon E3-1271 v3). Primary use case: Xeon E3-1271 v3 targets Server. Direct competitor: Xeon E3-1271 v3 rivals Core i7-4770.