Core i5-3570K vs Xeon D-1520

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 i5-3570K vs Xeon D-1520 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 i5-3570K vs Xeon D-1520: Pros, Cons & Final Verdict

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

Core i5-3570K

2012

Why buy it

✅+1.1% higher PassMark.
✅+300% larger total L3 cache (6 MB vs 1.5 MB).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics 4000, while Xeon D-1520 needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Xeon D-1520.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon D-1520 across 50 shared CPU benchmark tests.
❌Less compelling for workstation-style loads than Xeon D-1520, which brings 4 cores / 8 threads.
❌Launch MSRP is still $225 MSRP, while Xeon D-1520 mostly shows up through inconsistent older-market listings.
❌71.1% higher power demand at 77W vs 45W.

Xeon D-1520

2015

Why buy it

✅Better for gaming: +6.1% higher average FPS across 50 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 4 cores / 8 threads.
✅Draws 45W instead of 77W, a 32W reduction.

Trade-offs

❌Lower PassMark (4,917 vs 4,971).
❌Smaller total L3 cache (1.5 MB vs 6 MB).
❌No integrated graphics, while Core i5-3570K can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike Core i5-3570K.

Quick Answers

So, is Xeon D-1520 better than Core i5-3570K?

Not really, because they are built for different jobs. Xeon D-1520 makes more sense for workstation-style multi-core throughput, while Core i5-3570K 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, Core i5-3570K is the stronger fit. You are getting 1.1% better PassMark, backed by 4 cores and 4 threads. It also has the larger cache pool with 300% larger total L3 cache (6 MB vs 1.5 MB).

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

Xeon D-1520 is still the much better call for a fresh build. Xeon D-1520 comes in at an unclear MSRP at unclear MSRP versus $225 MSRP, and it still gives you a 6.1% average FPS lead across 50 shared CPU game tests in our data. Core i5-3570K only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2012 platform. Even with 100.0% better value on paper (22.1 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1155.

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

Xeon D-1520 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2015 vs 2012). That makes it the safer long-term bet.

Core i5-3570K vs Xeon D-1520 Technical Specifications

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

Core i5-3570K

The Core i5-3570K is manufactured by Intel. It was released in 29 April 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 4 cores and 4 threads. Base frequency is 3.4 GHz, with boost up to 3.8 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA1155. Thermal design power (TDP): 77 Watt. Memory support: DDR3. Passmark benchmark score: 4,971 points. Launch price was $235.

Xeon D-1520

The Xeon D-1520 is manufactured by Intel. It was released in 9 March 2015 (10 years ago). It is based on the Broadwell (2015−2019) architecture. It features 4 cores and 8 threads. Base frequency is 2.2 GHz, with boost up to 2.6 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. Passmark benchmark score: 4,917 points. Launch price was $199.

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Processing Power

The Core i5-3570K packs 4 cores / 4 threads, matching the Xeon D-1520's 4 cores. Boost clocks reach 3.8 GHz on the Core i5-3570K versus 2.6 GHz on the Xeon D-1520 — a 37.5% clock advantage for the Core i5-3570K (base: 3.4 GHz vs 2.2 GHz). The Core i5-3570K uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Xeon D-1520 uses Broadwell (2015−2019) (14 nm). In PassMark, the Core i5-3570K scores 4,971 against the Xeon D-1520's 4,917 — a 1.1% lead for the Core i5-3570K. L3 cache: 6 MB (total) on the Core i5-3570K vs 1.5 MB (per core) on the Xeon D-1520.

Feature	Core i5-3570K	Xeon D-1520
Cores / Threads	4 / 4	4 / 8
Boost Clock	3.8 GHz+46%	2.6 GHz
Base Clock	3.4 GHz+55%	2.2 GHz
L3 Cache	6 MB (total)+300%	1.5 MB (per core)
L2 Cache	256K (per core)	256K (per core)
Process	22 nm	14 nm-36%
Architecture	Ivy Bridge (2012−2013)	Broadwell (2015−2019)
PassMark	4,971+1%	4,917
Geekbench 6 Single	1,000	—

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Memory & Platform

The Core i5-3570K uses the LGA1155 socket (PCIe 3.0), while the Xeon D-1520 uses FCBGA1667 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-3570K	Xeon D-1520
Socket	LGA1155	FCBGA1667
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR3-1600	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, EPT (Core i5-3570K) / not specified (Xeon D-1520). The Core i5-3570K includes integrated graphics (HD Graphics 4000), while the Xeon D-1520 requires a dedicated GPU. Primary use case: Core i5-3570K targets Legacy Gaming Desktop. Direct competitor: Core i5-3570K rivals FX-8350.