Core i3-6100E vs Opteron X3421

Core i3-6100E vs Opteron X3421 Performance Spectrum

Core i3-6100E

2 / 4

3,315

+0.3%

3,306

0.0%

Ryzen Threadripper 3990X

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.

Core i3-6100E vs Opteron X3421 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 i3-6100E vs Opteron X3421: Pros, Cons & Final Verdict

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

Core i3-6100E

2015

Why buy it

✅+0.3% higher PassMark.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with Intel HD Graphics 530, while Opteron X3421 needs a discrete GPU.

Trade-offs

❌Worse for gaming: lower average FPS than Opteron X3421 across 50 shared CPU benchmark tests.
❌Less compelling for workstation-style loads than Opteron X3421, which brings 4 cores / 4 threads.
❌Launch MSRP is still $225 MSRP, while Opteron X3421 mostly shows up through inconsistent older-market listings.
❌133.3% higher power demand at 35W vs 15W.

Opteron X3421

2017

Why buy it

✅Better for gaming: +4.1% higher average FPS across 50 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 4 cores / 4 threads.
✅Draws 15W instead of 35W, a 20W reduction.

Trade-offs

❌Lower PassMark (3,306 vs 3,315).
❌No integrated graphics, while Core i3-6100E can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Opteron X3421 better than Core i3-6100E?

Not really, because they are built for different jobs. Opteron X3421 makes more sense for workstation-style multi-core throughput, while Core i3-6100E 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 i3-6100E is the stronger fit. You are getting 0.3% better PassMark, backed by 2 cores and 4 threads.

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

Opteron X3421 is still the much better call for a fresh build. Opteron X3421 comes in at an unclear MSRP at unclear MSRP versus $225 MSRP, and it still gives you a 4.1% average FPS lead across 50 shared CPU game tests in our data. Core i3-6100E only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2015 platform. Even with 100.0% better value on paper (14.7 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on that older platform.

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

Opteron X3421 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2017 vs 2015). That makes it the safer long-term bet.

Core i3-6100E vs Opteron X3421 Technical Specifications

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

Core i3-6100E

The Core i3-6100E is manufactured by Intel. It was released in 12 October 2015 (10 years ago). It is based on the Skylake (2015−2016) architecture. It features 2 cores and 4 threads. Max frequency: 2.7 GHz. L3 cache: 3 MB. L2 cache: 512 kB. Built on 14 nm process technology. Thermal design power (TDP): 35 Watt. Memory support: LPDDR3-1866. Passmark benchmark score: 3,315 points. Launch price was $225.

Opteron X3421

The Opteron X3421 is manufactured by AMD. It was released in 2015-01-01. It is based on the Excavator (2017−2018) architecture. It features 4 cores and 4 threads. Base frequency is 2.1 GHz, with boost up to 3.4 GHz. L2 cache: 2 MB (total). Built on 28 nm process technology. Socket: FP4. Thermal design power (TDP): 15 Watt. Memory support: DDR4. Passmark benchmark score: 3,306 points. Launch price was $800.

⚡

Processing Power

The Core i3-6100E packs 2 cores / 4 threads, while the Opteron X3421 offers 4 cores / 4 threads — the Opteron X3421 has 2 more cores. Boost clocks reach 2.7 GHz on the Core i3-6100E versus 3.4 GHz on the Opteron X3421 — a 23% clock advantage for the Opteron X3421. The Core i3-6100E uses the Skylake (2015−2016) architecture (14 nm), while the Opteron X3421 uses Excavator (2017−2018) (28 nm). In PassMark, the Core i3-6100E scores 3,315 against the Opteron X3421's 3,306 — a 0.3% lead for the Core i3-6100E.

Feature	Core i3-6100E	Opteron X3421
Cores / Threads	2 / 4	4 / 4+100%
Boost Clock	2.7 GHz	3.4 GHz+26%
Base Clock	—	2.1 GHz
L3 Cache	3 MB	—
L2 Cache	512 kB	2 MB (total)+300%
Process	14 nm-50%	28 nm
Architecture	Skylake (2015−2016)	Excavator (2017−2018)
PassMark	3,315	3,306

🔧

Advanced Features

Virtualization: true (Core i3-6100E) / not specified (Opteron X3421). The Core i3-6100E includes integrated graphics (Intel HD Graphics 530), while the Opteron X3421 requires a dedicated GPU.