Core 3 100U vs Core i9-9900T

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 3 100U vs Core i9-9900T 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 3 100U vs Core i9-9900T: Pros, Cons & Final Verdict

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

Core 3 100U

2024

Why buy it

✅+0.8% higher PassMark.
✅Draws 15W instead of 35W, a 20W reduction.
✅Newer platform on FCBGA1744 with DDR5 support instead of LGA1151 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-9900T across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (10 MB vs 16 MB).

Core i9-9900T

2019

Why buy it

✅Better for gaming: +10.1% higher average FPS across 50 shared CPU benchmark tests.
✅+60% larger total L3 cache (16 MB vs 10 MB).

Trade-offs

❌Lower PassMark (13,208 vs 13,312).
❌Launch MSRP is still $423 MSRP, while Core 3 100U mostly shows up through inconsistent older-market listings.
❌133.3% higher power demand at 35W vs 15W.
❌Older platform position on LGA1151 with DDR4, while Core 3 100U moves to FCBGA1744 and DDR5.

Quick Answers

So, is Core 3 100U better than Core i9-9900T?

It depends on what you want from the system. For gaming, Core i9-9900T is ahead with a 10.1% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core 3 100U pulls ahead with 0.8% better PassMark. Core i9-9900T also has the bigger cache pool with 60% larger total L3 cache (16 MB vs 10 MB).

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

For streaming, content creation, and heavier multitasking, Core 3 100U is the stronger fit. You are getting 0.8% better PassMark, backed by 6 cores and 8 threads.

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

Core 3 100U is still the faster CPU overall, but Core i9-9900T is easier to justify if budget matters more than peak performance. Core 3 100U comes in at an unclear MSRP at unclear MSRP versus $423 MSRP, and it still gives you 0.8% better PassMark. The compromise is that Core i9-9900T is still the better pure gaming CPU with a 10.1% average FPS lead across 50 shared CPU game tests in our data. Core i9-9900T is also 100.0% better value on MSRP (31.2 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Core 3 100U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2019), a healthier platform with FCBGA1744 and DDR5 instead of LGA1151, and more multi-core headroom with 6 cores / 8 threads instead of 8/16. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core 3 100U vs Core i9-9900T Technical Specifications

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

Core 3 100U

The Core 3 100U is manufactured by Intel. It was released in 8 January 2024 (1 year ago). It is based on the Raptor Lake-U Refresh (2024) architecture. It features 6 cores and 8 threads. Base frequency is 1.2 GHz, with boost up to 4.7 GHz. L3 cache: 10 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm process technology. Socket: FCBGA1744. Thermal design power (TDP): 15 Watt. Memory support: DDR5-5200, DDR4-3200, LPDDR4X-4267. Passmark benchmark score: 13,312 points. Launch price was $426.

Core i9-9900T

The Core i9-9900T is manufactured by Intel. It was released in 23 April 2019 (6 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 16 threads. Base frequency is 2.1 GHz, with boost up to 4.4 GHz. L3 cache: 16 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 35 Watt. Memory support: DDR4. Passmark benchmark score: 13,208 points. Launch price was $439.

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Processing Power

The Core 3 100U packs 6 cores / 8 threads, while the Core i9-9900T offers 8 cores / 16 threads — the Core i9-9900T has 2 more cores. Boost clocks reach 4.7 GHz on the Core 3 100U versus 4.4 GHz on the Core i9-9900T — a 6.6% clock advantage for the Core 3 100U (base: 1.2 GHz vs 2.1 GHz). The Core 3 100U uses the Raptor Lake-U Refresh (2024) architecture (10 nm), while the Core i9-9900T uses Coffee Lake-R (2018−2019) (14 nm). In PassMark, the Core 3 100U scores 13,312 against the Core i9-9900T's 13,208 — a 0.8% lead for the Core 3 100U. L3 cache: 10 MB (total) on the Core 3 100U vs 16 MB (total) on the Core i9-9900T.

Feature	Core 3 100U	Core i9-9900T
Cores / Threads	6 / 8	8 / 16+33%
Boost Clock	4.7 GHz+7%	4.4 GHz
Base Clock	1.2 GHz	2.1 GHz+75%
L3 Cache	10 MB (total)	16 MB (total)+60%
L2 Cache	1.25 MB (per core)	256K (per core)+20380%
Process	10 nm-29%	14 nm
Architecture	Raptor Lake-U Refresh (2024)	Coffee Lake-R (2018−2019)
PassMark	13,312	13,208

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Memory & Platform

The Core 3 100U uses the FCBGA1744 socket (PCIe 5.0), while the Core i9-9900T uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.