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 i5-5675C vs Xeon E5649 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 i5-5675C vs Xeon E5649: Pros, Cons & Final Verdict

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

Core i5-5675C

2015

Why buy it

✅+0.6% higher PassMark.
✅Costs $498 less on MSRP ($276 MSRP vs $774 MSRP).
✅Delivers 182.1% more PassMark for each dollar spent, at 20.6 vs 7.3 PassMark/$ ($276 MSRP vs $774 MSRP).
✅Draws 65W instead of 80W, a 15W reduction.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon E5649 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (4 MB vs 12 MB).
❌Less compelling for workstation-style loads than Xeon E5649, which brings 6 cores / 12 threads.

Xeon E5649

2011

Why buy it

✅Better for gaming: +12.1% higher average FPS across 50 shared CPU benchmark tests.
✅+200% larger total L3 cache (12 MB vs 4 MB).
✅Better for workstations and heavier parallel workloads: 6 cores / 12 threads.

Trade-offs

❌Lower PassMark (5,659 vs 5,693).
❌Lower PassMark per dollar, at 7.3 vs 20.6 PassMark/$ ($774 MSRP vs $276 MSRP).
❌23.1% higher power demand at 80W vs 65W.
❌No integrated graphics, while Core i5-5675C can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i5-5675C better than Xeon E5649?

Not really, because they are built for different jobs. Xeon E5649 makes more sense for workstation-style multi-core throughput, while Core i5-5675C 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 i5-5675C is the stronger fit. You are getting 0.6% better PassMark, backed by 4 cores and 4 threads.

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

Core i5-5675C is the better buy right now. Core i5-5675C comes in $498 cheaper on MSRP at $276 MSRP versus $774 MSRP, and it still gives you 0.6% better PassMark. The compromise is that Xeon E5649 is still the better pure gaming CPU with a 12.1% average FPS lead across 50 shared CPU game tests in our data. It is also 182.1% better value on MSRP (20.6 vs 7.3 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i5-5675C makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2015 vs 2011) and more multi-core headroom with 4 cores / 4 threads instead of 6/12. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i5-5675C vs Xeon E5649 Technical Specifications

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

Core i5-5675C

The Core i5-5675C 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 4 threads. Base frequency is 3.1 GHz, with boost up to 3.6 GHz. L3 cache: 4 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA1150. Thermal design power (TDP): 65 Watt. Memory support: DDR3L-1333, DDR3L-1600. Passmark benchmark score: 5,693 points. Launch price was $149.

Xeon E5649

The Xeon E5649 is manufactured by Intel. It was released in 14 February 2011 (14 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 2.53 GHz, with boost up to 2.93 GHz. L3 cache: 12288 kB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 80 Watt. Memory support: DDR3. Passmark benchmark score: 5,659 points. Launch price was $45.

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Processing Power

The Core i5-5675C packs 4 cores / 4 threads, while the Xeon E5649 offers 6 cores / 12 threads — the Xeon E5649 has 2 more cores. Boost clocks reach 3.6 GHz on the Core i5-5675C versus 2.93 GHz on the Xeon E5649 — a 20.5% clock advantage for the Core i5-5675C (base: 3.1 GHz vs 2.53 GHz). The Core i5-5675C uses the Broadwell (2015−2019) architecture (14 nm), while the Xeon E5649 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Core i5-5675C scores 5,693 against the Xeon E5649's 5,659 — a 0.6% lead for the Core i5-5675C. L3 cache: 4 MB (total) on the Core i5-5675C vs 12288 kB (total) on the Xeon E5649.

Feature	Core i5-5675C	Xeon E5649
Cores / Threads	4 / 4	6 / 12+50%
Boost Clock	3.6 GHz+23%	2.93 GHz
Base Clock	3.1 GHz+23%	2.53 GHz
L3 Cache	4 MB (total)	12288 kB (total)+200%
L2 Cache	1 MB (per core)+300%	256 kB (per core)
Process	14 nm-56%	32 nm
Architecture	Broadwell (2015−2019)	Westmere-EP (2010−2011)
PassMark	5,693	5,659
Geekbench 6 Single	—	415
Geekbench 6 Multi	—	2,109

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Memory & Platform

The Core i5-5675C uses the LGA1150 socket (PCIe 3.0), while the Xeon E5649 uses LGA1366 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3L-1600 on the Core i5-5675C versus DDR3 1333 MHz on the Xeon E5649 — the Core i5-5675C supports 20% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon E5649 supports up to 288 GB of RAM compared to 32 GB — 800% more capacity for professional workloads. Memory channels: 2 (Core i5-5675C) vs 3 (Xeon E5649). PCIe lanes: 16 (Core i5-5675C) vs 0 (Xeon E5649) — the Core i5-5675C offers 16 more lanes for additional GPUs or NVMe drives.

Feature	Core i5-5675C	Xeon E5649
Socket	LGA1150	LGA1366
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR3L-1600+20%	DDR3 1333 MHz
Max RAM Capacity	32 GB	288 GB+800%
RAM Channels	2	3+50%
ECC Support	No	Yes
PCIe Lanes	16	0

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Advanced Features

Only the Core i5-5675C has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, VT-d (Core i5-5675C) vs true (Xeon E5649). The Core i5-5675C includes integrated graphics (Iris Pro Graphics 6200), while the Xeon E5649 requires a dedicated GPU. Primary use case: Core i5-5675C targets Desktop, Xeon E5649 targets Server.

Feature	Core i5-5675C	Xeon E5649
Integrated GPU	Yes	No
IGPU Model	Iris Pro Graphics 6200	—
Unlocked	Yes	No
AVX-512	No	No
Virtualization	VT-x, VT-d	true
Target Use	Desktop	Server

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Value Analysis

At launch, the Core i5-5675C was priced at $276, while the Xeon E5649 came in at $774. On launch pricing ($276 vs $774), Core i5-5675C was $498 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-5675C delivers 20.6 pts/$ vs 7.3 pts/$ for the Xeon E5649 — making the Core i5-5675C the 95.3% better value option.

Feature	Core i5-5675C	Xeon E5649
MSRP	$276-64%	$774
Performance per Dollar	20.6+182%	7.3
Release Date	2015	2011

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