Core i7-5775R vs Xeon D-1531

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 D-1531 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 D-1531: 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

✅+300% larger total L3 cache (6 MB vs 1.5 MB).

Trade-offs

❌Lower PassMark (7,598 vs 7,668).
❌Less compelling for workstation-style loads than Xeon D-1531, which brings 6 cores / 12 threads.
❌44.4% higher power demand at 65W vs 45W.

Xeon D-1531

2015

Why buy it

✅+0.9% higher PassMark.
✅Better for workstations and heavier parallel workloads: 6 cores / 12 threads.
✅Draws 45W instead of 65W, a 20W reduction.

Trade-offs

❌Smaller total L3 cache (1.5 MB vs 6 MB).
❌Launch MSRP is still $2,057 MSRP, while Core i7-5775R mostly shows up through inconsistent older-market listings.

Quick Answers

So, is Xeon D-1531 better than Core i7-5775R?

Not really, because they are built for different jobs. Xeon D-1531 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 streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Xeon D-1531 is the stronger fit. You are getting 0.9% better PassMark, backed by 6 cores and 12 threads.

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

Xeon D-1531 is the better buy right now. Xeon D-1531 comes in at an unclear MSRP at $2,057 MSRP versus unclear MSRP, and it still gives you 0.9% better PassMark. The compromise is that Core i7-5775R is still the better pure gaming CPU with a 2.1% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (3.7 vs 0.0 PassMark/$), 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 D-1531 makes more sense long term for 2026 and beyond. You are getting more multi-core headroom with 6 cores / 12 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 D-1531 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 D-1531

The Xeon D-1531 is manufactured by Intel. It was released in 1 November 2015 (10 years ago). It is based on the Broadwell (2015−2019) architecture. It features 6 cores and 12 threads. Base frequency is 2.2 GHz, with boost up to 2.7 GHz. L3 cache: 1.5 MB (per core). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA1667. Thermal design power (TDP): 45 Watt. Memory support: DDR4, DDR3. Passmark benchmark score: 7,668 points. Launch price was $348.

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Processing Power

The Core i7-5775R packs 4 cores / 8 threads, while the Xeon D-1531 offers 6 cores / 12 threads — the Xeon D-1531 has 2 more cores. Boost clocks reach 3.8 GHz on the Core i7-5775R versus 2.7 GHz on the Xeon D-1531 — a 33.8% clock advantage for the Core i7-5775R (base: 3.3 GHz vs 2.2 GHz). Both are built on the Broadwell (2015−2019) architecture using a 14 nm process. In PassMark, the Core i7-5775R scores 7,598 against the Xeon D-1531's 7,668 — a 0.9% lead for the Xeon D-1531. L3 cache: 6 MB (total) on the Core i7-5775R vs 1.5 MB (per core) on the Xeon D-1531.

Feature	Core i7-5775R	Xeon D-1531
Cores / Threads	4 / 8	6 / 12+50%
Boost Clock	3.8 GHz+41%	2.7 GHz
Base Clock	3.3 GHz+50%	2.2 GHz
L3 Cache	6 MB (total)+300%	1.5 MB (per core)
L2 Cache	256K (per core)	256K (per core)
Process	14 nm	14 nm
Architecture	Broadwell (2015−2019)	Broadwell (2015−2019)
PassMark	7,598	7,668

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Memory & Platform

The Core i7-5775R uses the BGA1364 socket (PCIe 3.0), while the Xeon D-1531 uses FCBGA1667 (PCIe 3.0) — making them incompatible on the same motherboard.