Core i3-1315U vs Core i3-11100B

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 i3-1315U vs Core i3-11100B 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 i3-1315U vs Core i3-11100B: Pros, Cons & Final Verdict

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

Core i3-1315U

2023

Why buy it

✅Draws 15W instead of 65W, a 50W reduction.

Trade-offs

❌Lower PassMark (11,248 vs 11,357).
❌Smaller total L3 cache (10 MB vs 12 MB).
❌No integrated graphics, while Core i3-11100B can still boot and troubleshoot without a discrete GPU.

Core i3-11100B

2021

Why buy it

✅+1% higher PassMark.
✅+20% larger total L3 cache (12 MB vs 10 MB).
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with UHD Graphics for 11th Gen (16 EU), while Core i3-1315U needs a discrete GPU.

Trade-offs

❌333.3% higher power demand at 65W vs 15W.

Quick Answers

So, is Core i3-1315U better than Core i3-11100B?

It depends on what you want from the system. For gaming, Core i3-1315U is ahead with a 1.5% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i3-11100B pulls ahead with 1% better PassMark. Core i3-11100B also has the bigger cache pool with 20% larger total L3 cache (12 MB vs 10 MB).

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

For streaming, content creation, and heavier multitasking, Core i3-11100B is the stronger fit. You are getting 1% better PassMark, backed by 4 cores and 8 threads. It also has the larger cache pool with 20% larger total L3 cache (12 MB vs 10 MB).

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

Core i3-1315U still makes the most sense overall. Core i3-1315U comes in at an unclear MSRP at unclear MSRP versus unclear MSRP, and it still gives you a 1.5% average FPS lead across 50 shared CPU game tests in our data.

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

Core i3-1315U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2021) and a healthier platform with FCBGA1744 and DDR5 instead of the older platform. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i3-1315U vs Core i3-11100B Technical Specifications

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

Core i3-1315U

The Core i3-1315U is manufactured by Intel. It was released in 4 January 2023 (2 years ago). It is based on the Raptor Lake-U (2023) architecture. It features 6 cores and 8 threads. Base frequency is 1.2 GHz, with boost up to 4.5 GHz. L3 cache: 10 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: FCBGA1744. Thermal design power (TDP): 15 Watt. Memory support: DDR5-5200, DDR4-3200, LPDDR4x-4267. Passmark benchmark score: 11,248 points. Launch price was $309.

Core i3-11100B

The Core i3-11100B is manufactured by Intel. It was released in 1 April 2021 (4 years ago). It features 4 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 4.4 GHz. L3 cache: 12 MB. Built on 10 nm SuperFin process technology. Thermal design power (TDP): 65 Watt. Memory support: Up to 3200 MT/s. Passmark benchmark score: 11,357 points. Launch price was $149.

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Processing Power

The Core i3-1315U packs 6 cores / 8 threads, while the Core i3-11100B offers 4 cores / 8 threads — the Core i3-1315U has 2 more cores. Boost clocks reach 4.5 GHz on the Core i3-1315U versus 4.4 GHz on the Core i3-11100B — a 2.2% clock advantage for the Core i3-1315U (base: 1.2 GHz vs 3.6 GHz). The Core i3-1315U is built on the Raptor Lake-U (2023) architecture. In PassMark, the Core i3-1315U scores 11,248 against the Core i3-11100B's 11,357 — a 1% lead for the Core i3-11100B. L3 cache: 10 MB (total) on the Core i3-1315U vs 12 MB on the Core i3-11100B.

Feature	Core i3-1315U	Core i3-11100B
Cores / Threads	6 / 8+50%	4 / 8
Boost Clock	4.5 GHz+2%	4.4 GHz
Base Clock	1.2 GHz	3.6 GHz+200%
L3 Cache	10 MB (total)	12 MB+20%
L2 Cache	1.25 MB (per core)	—
Process	Intel 7 nm-30%	10 nm SuperFin
Architecture	Raptor Lake-U (2023)	—
PassMark	11,248	11,357
Geekbench 6 Single	—	1,402

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Advanced Features

Virtualization: not specified (Core i3-1315U) / VT-x, VT-d, EPT (Core i3-11100B). The Core i3-11100B includes integrated graphics (UHD Graphics for 11th Gen (16 EU)), while the Core i3-1315U requires a dedicated GPU. Primary use case: Core i3-11100B targets Desktop. Direct competitor: Core i3-11100B rivals Ryzen 3 5300G.