Core i5-1145GRE vs Core i5-10400H

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 i5-1145GRE vs Core i5-10400H 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 i5-1145GRE vs Core i5-10400H: Pros, Cons & Final Verdict

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

Core i5-1145GRE

2020

Why buy it

✅+33.3% larger total L3 cache (8 MB vs 6 MB).
✅Draws 28W instead of 45W, a 17W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400H across 50 shared CPU benchmark tests.
❌Lower PassMark (8,207 vs 8,246).
❌Launch MSRP is still $362 MSRP, while Core i5-10400H mostly shows up through inconsistent older-market listings.
❌No integrated graphics, while Core i5-10400H can still boot and troubleshoot without a discrete GPU.

Core i5-10400H

2020

Why buy it

✅Better for gaming: +12.4% 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 Core i5-1145GRE needs a discrete GPU.

Trade-offs

❌Smaller total L3 cache (6 MB vs 8 MB).
❌60.7% higher power demand at 45W vs 28W.

Quick Answers

So, is Core i5-10400H better than Core i5-1145GRE?

Yes. Core i5-10400H is the better all-around CPU here. It gives you a 12.4% average FPS lead across 50 shared CPU game tests in our data, 0.5% 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 i5-10400H is the better pick. According to our tests, it delivers 12.4% 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 i5-10400H is the stronger fit. You are getting 0.5% better PassMark, backed by 4 cores and 8 threads.

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

Core i5-10400H is the easy recommendation for a fresh desktop build. Core i5-10400H comes in at an unclear MSRP at unclear MSRP versus $362 MSRP, and it still gives you a 12.4% average FPS lead across 50 shared CPU game tests in our data. Core i5-1145GRE only looks good on raw value math because it is a cheap legacy laptop chip, not because it is a real desktop gaming recommendation. It simply does not keep up in modern games, especially when the gap is already 12.4% in the shared gaming data.

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

Core i5-10400H makes more sense long term for 2026 and beyond. You are getting more multi-core headroom with 4 cores / 8 threads instead of 4/8. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i5-1145GRE vs Core i5-10400H Technical Specifications

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

Core i5-1145GRE

The Core i5-1145GRE is manufactured by Intel. It was released in 2 September 2020 (5 years ago). It is based on the Tiger Lake-U (2020−2021) architecture. It features 4 cores and 8 threads. Base frequency is 1.5 GHz, with boost up to 4.1 GHz. L3 cache: 8 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm process technology. Socket: FCBGA1449. Thermal design power (TDP): 28 Watt. Memory support: DDR4, LPDDR4X. Passmark benchmark score: 8,207 points. Launch price was $362.

Core i5-10400H

The Core i5-10400H is manufactured by Intel. It was released in 2 April 2020 (5 years ago). It is based on the Comet Lake-H (2020) architecture. It features 4 cores and 8 threads. Base frequency is 2.6 GHz, with boost up to 4.6 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: BGA1440. Thermal design power (TDP): 45 Watt. Memory support: DDR4. Passmark benchmark score: 8,246 points. Launch price was $149.

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Processing Power

Both the Core i5-1145GRE and Core i5-10400H share an identical 4-core/8-thread configuration. Boost clocks reach 4.1 GHz on the Core i5-1145GRE versus 4.6 GHz on the Core i5-10400H — a 11.5% clock advantage for the Core i5-10400H (base: 1.5 GHz vs 2.6 GHz). The Core i5-1145GRE uses the Tiger Lake-U (2020−2021) architecture (10 nm), while the Core i5-10400H uses Comet Lake-H (2020) (14 nm). In PassMark, the Core i5-1145GRE scores 8,207 against the Core i5-10400H's 8,246 — a 0.5% lead for the Core i5-10400H. L3 cache: 8 MB (total) on the Core i5-1145GRE vs 6 MB (total) on the Core i5-10400H.

Feature	Core i5-1145GRE	Core i5-10400H
Cores / Threads	4 / 8	4 / 8
Boost Clock	4.1 GHz	4.6 GHz+12%
Base Clock	1.5 GHz	2.6 GHz+73%
L3 Cache	8 MB (total)+33%	6 MB (total)
L2 Cache	1.25 MB (per core)	256K (per core)+20380%
Process	10 nm-29%	14 nm
Architecture	Tiger Lake-U (2020−2021)	Comet Lake-H (2020)
PassMark	8,207	8,246
Geekbench 6 Single	—	1,391

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Memory & Platform

The Core i5-1145GRE uses the FCBGA1449 socket (PCIe 4.0), while the Core i5-10400H uses BGA1440 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-1145GRE	Core i5-10400H
Socket	FCBGA1449	BGA1440
PCIe Generation	PCIe 4.0+33%	PCIe 3.0
Max RAM Speed	—	DDR4-2933
Max RAM Capacity	—	128 GB
RAM Channels	—	2
ECC Support	—	No
PCIe Lanes	—	16

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Advanced Features

Virtualization: not specified (Core i5-1145GRE) / VT-x, VT-d, EPT (Core i5-10400H). The Core i5-10400H includes integrated graphics (UHD Graphics 630), while the Core i5-1145GRE requires a dedicated GPU. Primary use case: Core i5-10400H targets Performance Laptop. Direct competitor: Core i5-10400H rivals Ryzen 5 4600H.