Core i7-5820K vs Xeon E5-2689

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 i7-5820K vs Xeon E5-2689 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 i7-5820K vs Xeon E5-2689: Pros, Cons & Final Verdict

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

Core i7-5820K

2014

Why buy it

✅Costs $1,411 less on MSRP ($389 MSRP vs $1,800 MSRP).
✅Delivers 358.2% more PassMark for each dollar spent, at 25.3 vs 5.5 PassMark/$ ($389 MSRP vs $1,800 MSRP).
✅100+% more PCIe lanes (28 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (9,826 vs 9,922).
❌Smaller total L3 cache (15 MB vs 20 MB).
❌Less compelling for workstation-style loads than Xeon E5-2689, which brings 8 cores / 16 threads.
❌21.7% higher power demand at 140W vs 115W.

Xeon E5-2689

2012

Why buy it

✅+1% higher PassMark.
✅+33.3% larger total L3 cache (20 MB vs 15 MB).
✅Better for workstations and heavier parallel workloads: 8 cores / 16 threads.
✅Draws 115W instead of 140W, a 25W reduction.

Trade-offs

❌Lower PassMark per dollar, at 5.5 vs 25.3 PassMark/$ ($1,800 MSRP vs $389 MSRP).

Quick Answers

So, is Xeon E5-2689 better than Core i7-5820K?

Not really, because they are built for different jobs. Xeon E5-2689 makes more sense for workstation-style multi-core throughput, while Core i7-5820K is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

For gaming, this matchup is basically a tie in the data we have.

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

For streaming, content creation, and heavier multitasking, Xeon E5-2689 is the stronger fit. You are getting 1% better PassMark, backed by 8 cores and 16 threads. It also has the larger cache pool with 33.3% larger total L3 cache (20 MB vs 15 MB).

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

Xeon E5-2689 is still the much better call for a fresh build. Xeon E5-2689 comes in 362.7% more expensive on MSRP at $1,800 MSRP versus $389 MSRP, and it still gives you a 2.1% average FPS lead across 50 shared CPU game tests in our data. Core i7-5820K only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2014 platform. Even with 358.2% better value on paper (25.3 vs 5.5 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA2011.

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

Core i7-5820K makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2014 vs 2012). That makes it the safer long-term bet.

Core i7-5820K vs Xeon E5-2689 Technical Specifications

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

Core i7-5820K

The Core i7-5820K is manufactured by Intel. It was released in 1 September 2014 (11 years ago). It is based on the Haswell-E (2014) architecture. It features 6 cores and 12 threads. Base frequency is 3.3 GHz, with boost up to 3.6 GHz. L3 cache: 15 MB (total). L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 140 Watt. Memory support: DDR4. Passmark benchmark score: 9,826 points. Launch price was $410.

Xeon E5-2689

The Xeon E5-2689 is manufactured by Intel. It was released in 2015-01-01. It is based on the Sandy Bridge-EP (2012) architecture. It features 8 cores and 16 threads. Base frequency is 2.6 GHz, with boost up to 3.6 GHz. L3 cache: 20 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA2011. Thermal design power (TDP): 115 Watt. Memory support: DDR3. Passmark benchmark score: 9,922 points. Launch price was $800.

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Processing Power

The Core i7-5820K packs 6 cores / 12 threads, while the Xeon E5-2689 offers 8 cores / 16 threads — the Xeon E5-2689 has 2 more cores. Boost clocks reach 3.6 GHz on the Core i7-5820K versus 3.6 GHz on the Xeon E5-2689 — identical boost frequencies (base: 3.3 GHz vs 2.6 GHz). The Core i7-5820K uses the Haswell-E (2014) architecture (22 nm), while the Xeon E5-2689 uses Sandy Bridge-EP (2012) (32 nm). In PassMark, the Core i7-5820K scores 9,826 against the Xeon E5-2689's 9,922 — a 1% lead for the Xeon E5-2689. L3 cache: 15 MB (total) on the Core i7-5820K vs 20 MB (total) on the Xeon E5-2689.

Feature	Core i7-5820K	Xeon E5-2689
Cores / Threads	6 / 12	8 / 16+33%
Boost Clock	3.6 GHz	3.6 GHz
Base Clock	3.3 GHz+27%	2.6 GHz
L3 Cache	15 MB (total)	20 MB (total)+33%
L2 Cache	256 kB (per core)	256 kB (per core)
Process	22 nm-31%	32 nm
Architecture	Haswell-E (2014)	Sandy Bridge-EP (2012)
PassMark	9,826	9,922
Cinebench R23 Multi	5,700	—
Geekbench 6 Single	1,134	—
Geekbench 6 Multi	5,383	—

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Memory & Platform

Both processors use the LGA2011 socket with PCIe 3.0.

Feature	Core i7-5820K	Xeon E5-2689
Socket	LGA2011	LGA2011
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR4-2133	—
Max RAM Capacity	64 GB	—
RAM Channels	4	—
ECC Support	No	—
PCIe Lanes	28	—

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Advanced Features

Virtualization: Yes (Core i7-5820K) / not specified (Xeon E5-2689). Primary use case: Core i7-5820K targets Enthusiast Workstation. Direct competitor: Core i7-5820K rivals Ryzen 5 1600.

Feature	Core i7-5820K	Xeon E5-2689
Integrated GPU	No	—
Unlocked	Yes	—
AVX-512	No	—
Virtualization	Yes	—
Target Use	Enthusiast Workstation	—

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Value Analysis

At launch, the Core i7-5820K was priced at $389, while the Xeon E5-2689 came in at $1800. On launch pricing ($389 vs $1800), Core i7-5820K was $1411 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-5820K delivers 25.3 pts/$ vs 5.5 pts/$ for the Xeon E5-2689 — making the Core i7-5820K the 128.3% better value option.

Feature	Core i7-5820K	Xeon E5-2689
MSRP	$389-78%	$1800
Performance per Dollar	25.3+360%	5.5
Release Date	2014	2012

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