Core i7-9700K vs Sempron 3400+

Core i7-9700K vs Sempron 3400+ Performance Spectrum

Core i7-9700K

8 / 8

14,397

+3224.9%

433

0.0%

Ryzen Threadripper PRO 3955WX

Ryzen Threadripper PRO 7955WX

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 i7-9700K vs Sempron 3400+ 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 i7-9700K vs Sempron 3400+: Pros, Cons & Final Verdict

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

Core i7-9700K

2018

Why buy it

✅Better for gaming: +1948.0% higher average FPS across 50 shared CPU benchmark tests.
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with UHD Graphics 630, while Sempron 3400+ needs a discrete GPU.

Trade-offs

❌Launch MSRP is still $385 MSRP, while Sempron 3400+ mostly shows up through inconsistent older-market listings.
❌53.2% higher power demand at 95W vs 62W.

Sempron 3400+

2005

Why buy it

✅Draws 62W instead of 95W, a 33W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-9700K across 50 shared CPU benchmark tests.
❌Lower PassMark (433 vs 14,397).
❌No integrated graphics, while Core i7-9700K can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i7-9700K better than Sempron 3400+?

Yes. Core i7-9700K is the better all-around CPU here. It gives you a 1948.0% average FPS lead across 50 shared CPU game tests in our data, 3224.9% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i7-9700K is the better pick. According to our tests, it delivers 1948.0% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Core i7-9700K is the stronger fit. You are getting 3224.9% better PassMark, backed by 8 cores and 8 threads.

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

Core i7-9700K is the better buy right now. Core i7-9700K comes in at an unclear MSRP at $385 MSRP versus unclear MSRP, and it still gives you a 1948.0% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (37.4 vs 0.0 PassMark/$), 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 i7-9700K makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2005) and more multi-core headroom with 8 cores / 8 threads instead of 1/1. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-9700K vs Sempron 3400+ Technical Specifications

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

Core i7-9700K

The Core i7-9700K is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 4.9 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 95 Watt. Memory support: DDR4. Passmark benchmark score: 14,397 points. Launch price was $374.

Sempron 3400+

The Sempron 3400+ is manufactured by AMD. It was released in 1 October 2005 (20 years ago). It is based on the Palermo (2001−2005) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L3 cache: 0 kB. L2 cache: 128 kB. Built on 90 nm process technology. Socket: 939. Thermal design power (TDP): 62 Watt. Memory support: DDR1. Passmark benchmark score: 433 points. Launch price was $30.

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Processing Power

The Core i7-9700K packs 8 cores / 8 threads, while the Sempron 3400+ offers 1 cores / 1 threads — the Core i7-9700K has 7 more cores. Boost clocks reach 4.9 GHz on the Core i7-9700K versus 2 GHz on the Sempron 3400+ — a 84.1% clock advantage for the Core i7-9700K. The Core i7-9700K uses the Coffee Lake-R (2018−2019) architecture (14 nm), while the Sempron 3400+ uses Palermo (2001−2005) (90 nm). In PassMark, the Core i7-9700K scores 14,397 against the Sempron 3400+'s 433 — a 188.3% lead for the Core i7-9700K. L3 cache: 12 MB (total) on the Core i7-9700K vs 0 kB on the Sempron 3400+.

Feature	Core i7-9700K	Sempron 3400+
Cores / Threads	8 / 8+700%	1 / 1
Boost Clock	4.9 GHz+145%	2 GHz
Base Clock	3.6 GHz	—
L3 Cache	12 MB (total)	0 kB
L2 Cache	256K (per core)+100%	128 kB
Process	14 nm-84%	90 nm
Architecture	Coffee Lake-R (2018−2019)	Palermo (2001−2005)
PassMark	14,397+3225%	433

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Memory & Platform

The Core i7-9700K uses the LGA1151 socket (PCIe 3.0), while the Sempron 3400+ uses 939 (PCIe 2.0) — making them incompatible on the same motherboard.

Feature	Core i7-9700K	Sempron 3400+
Socket	LGA1151	939
PCIe Generation	PCIe 3.0+50%	PCIe 2.0
Max RAM Speed	DDR4-2666	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, VT-d (Core i7-9700K) / not specified (Sempron 3400+). The Core i7-9700K includes integrated graphics (UHD Graphics 630), while the Sempron 3400+ requires a dedicated GPU. Primary use case: Core i7-9700K targets Desktop.