Ryzen 3 3300U vs Xeon E5649

Ryzen 3 3300U vs Xeon E5649 Performance Spectrum

Ryzen 3 3300U

4 / 4

5,686

+0.5%

FX-4350

Ryzen Embedded R1505G

Ryzen Threadripper PRO 3975WX

Ryzen Threadripper PRO 7965WX

Xeon E5649

6 / 12

5,659

0.0%

About PassMark

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.

Ryzen 3 3300U 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.

Ryzen 3 3300U 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.

Ryzen 3 3300U

2019

Why buy it

✅+0.5% higher PassMark.
✅Draws 15W instead of 80W, a 65W reduction.

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: +14.6% 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 5,686).
❌Launch MSRP is still $774 MSRP, while Ryzen 3 3300U mostly shows up through inconsistent older-market listings.
❌433.3% higher power demand at 80W vs 15W.

Quick Answers

So, is Ryzen 3 3300U 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 Ryzen 3 3300U 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, Ryzen 3 3300U is the stronger fit. You are getting 0.5% better PassMark, backed by 4 cores and 4 threads.

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

Ryzen 3 3300U is still the faster CPU overall, but Xeon E5649 is easier to justify if budget matters more than peak performance. Ryzen 3 3300U comes in at an unclear MSRP at unclear MSRP versus $774 MSRP, and it still gives you 0.5% better PassMark. The compromise is that Xeon E5649 is still the better pure gaming CPU with a 14.6% average FPS lead across 50 shared CPU game tests in our data. Xeon E5649 is also 100.0% better value on MSRP (7.3 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Ryzen 3 3300U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 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.

Ryzen 3 3300U vs Xeon E5649 Technical Specifications

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

Ryzen 3 3300U

The Ryzen 3 3300U is manufactured by AMD. It was released in 6 January 2019 (6 years ago). It is based on the Picasso (2019−2022) architecture. It features 4 cores and 4 threads. Base frequency is 2.1 GHz, with boost up to 3.5 GHz. L3 cache: 4 MB (total). L2 cache: 512K (per core). Built on 12 nm process technology. Socket: FP5. Thermal design power (TDP): 15 Watt. Memory support: DDR4 Dual-channel. Passmark benchmark score: 5,686 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 Ryzen 3 3300U packs 4 cores / 4 threads, while the Xeon E5649 offers 6 cores / 12 threads — the Xeon E5649 has 2 more cores. Boost clocks reach 3.5 GHz on the Ryzen 3 3300U versus 2.93 GHz on the Xeon E5649 — a 17.7% clock advantage for the Ryzen 3 3300U (base: 2.1 GHz vs 2.53 GHz). The Ryzen 3 3300U uses the Picasso (2019−2022) architecture (12 nm), while the Xeon E5649 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Ryzen 3 3300U scores 5,686 against the Xeon E5649's 5,659 — a 0.5% lead for the Ryzen 3 3300U. L3 cache: 4 MB (total) on the Ryzen 3 3300U vs 12288 kB (total) on the Xeon E5649.

Feature	Ryzen 3 3300U	Xeon E5649
Cores / Threads	4 / 4	6 / 12+50%
Boost Clock	3.5 GHz+19%	2.93 GHz
Base Clock	2.1 GHz	2.53 GHz+20%
L3 Cache	4 MB (total)	12288 kB (total)+200%
L2 Cache	512K (per core)+100%	256 kB (per core)
Process	12 nm-63%	32 nm
Architecture	Picasso (2019−2022)	Westmere-EP (2010−2011)
PassMark	5,686	5,659
Geekbench 6 Single	—	415
Geekbench 6 Multi	—	2,109

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Memory & Platform

The Ryzen 3 3300U uses the FP5 socket (PCIe 3.0), while the Xeon E5649 uses LGA1366 (PCIe 5.0) — making them incompatible on the same motherboard.

Feature	Ryzen 3 3300U	Xeon E5649
Socket	FP5	LGA1366
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	—	DDR3 1333 MHz
Max RAM Capacity	—	288 GB
RAM Channels	—	3
ECC Support	—	Yes
PCIe Lanes	—	0