Core i5-1155G7 vs Core i5-10400T

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 i5-1155G7 vs Core i5-10400T 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 i5-1155G7 vs Core i5-10400T: Pros, Cons & Final Verdict

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

Core i5-1155G7

2021

Why buy it

✅Better for gaming: +4.8% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 28W instead of 35W, a 7W reduction.

Trade-offs

❌Lower PassMark (9,686 vs 9,789).
❌Smaller total L3 cache (8 MB vs 12 MB).
❌No integrated graphics, while Core i5-10400T can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike Core i5-10400T.

Core i5-10400T

2020

Why buy it

✅+1.1% higher PassMark.
✅+50% larger total L3 cache (12 MB vs 8 MB).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with UHD Graphics 630, while Core i5-1155G7 needs a discrete GPU.
✅Includes a boxed cooler (Yes), unlike Core i5-1155G7.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-1155G7 across 50 shared CPU benchmark tests.
❌Launch MSRP is still $182 MSRP, while Core i5-1155G7 mostly shows up through inconsistent older-market listings.
❌25% higher power demand at 35W vs 28W.

Quick Answers

So, is Core i5-1155G7 better than Core i5-10400T?

It depends on what you want from the system. For gaming, Core i5-1155G7 is ahead with a 4.8% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i5-10400T pulls ahead with 1.1% better PassMark. Core i5-10400T also has the bigger cache pool with 50% larger total L3 cache (12 MB vs 8 MB).

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

For streaming, content creation, and heavier multitasking, Core i5-10400T is the stronger fit. You are getting 1.1% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 50% larger total L3 cache (12 MB vs 8 MB).

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

Core i5-1155G7 is still the faster CPU overall, but Core i5-10400T is easier to justify if budget matters more than peak performance. Core i5-1155G7 comes in at an unclear MSRP at unclear MSRP versus $182 MSRP, and it still gives you a 4.8% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core i5-10400T is still stronger for heavier multi-core work with 1.1% better PassMark. Core i5-10400T is also 100.0% better value on MSRP (53.8 vs 0.0 PassMark/$), 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 i5-1155G7 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2020). That makes it the safer long-term bet.

Core i5-1155G7 vs Core i5-10400T Technical Specifications

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

Core i5-1155G7

The Core i5-1155G7 is manufactured by Intel. It was released in 31 May 2021 (4 years ago). It is based on the Tiger Lake-UP3 (2020−2021) architecture. It features 4 cores and 8 threads. Base frequency is 2.5 GHz, with boost up to 4.5 GHz. L3 cache: 8 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm SuperFin process technology. Socket: FCBGA1449. Thermal design power (TDP): 28 Watt. Memory support: DDR4. Passmark benchmark score: 9,686 points. Launch price was $309.

Core i5-10400T

The Core i5-10400T is manufactured by Intel. It was released in 1 April 2020 (5 years ago). It features 6 cores and 12 threads. Base frequency is 2 GHz, with boost up to 3.6 GHz. L3 cache: 12 MB Intel® Smart Cache. Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 35 Watt. Memory support: DDR4-2666. Passmark benchmark score: 9,789 points. Launch price was $149.

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Processing Power

The Core i5-1155G7 packs 4 cores / 8 threads, while the Core i5-10400T offers 6 cores / 12 threads — the Core i5-10400T has 2 more cores. Boost clocks reach 4.5 GHz on the Core i5-1155G7 versus 3.6 GHz on the Core i5-10400T — a 22.2% clock advantage for the Core i5-1155G7 (base: 2.5 GHz vs 2 GHz). The Core i5-1155G7 is built on the Tiger Lake-UP3 (2020−2021) architecture. In PassMark, the Core i5-1155G7 scores 9,686 against the Core i5-10400T's 9,789 — a 1.1% lead for the Core i5-10400T. L3 cache: 8 MB (total) on the Core i5-1155G7 vs 12 MB Intel® Smart Cache on the Core i5-10400T.

Feature	Core i5-1155G7	Core i5-10400T
Cores / Threads	4 / 8	6 / 12+50%
Boost Clock	4.5 GHz+25%	3.6 GHz
Base Clock	2.5 GHz+25%	2 GHz
L3 Cache	8 MB (total)	12 MB Intel® Smart Cache+50%
L2 Cache	1.25 MB (per core)	—
Process	10 nm SuperFin-29%	14 nm
Architecture	Tiger Lake-UP3 (2020−2021)	—
PassMark	9,686	9,789+1%
Geekbench 6 Single	—	1,272

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Memory & Platform

The Core i5-1155G7 uses the FCBGA1449 socket (PCIe 4.0), while the Core i5-10400T uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-1155G7	Core i5-10400T
Socket	FCBGA1449	LGA1200
PCIe Generation	PCIe 4.0+33%	PCIe 3.0
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: not specified (Core i5-1155G7) / VT-x, VT-d, EPT (Core i5-10400T). The Core i5-10400T includes integrated graphics (UHD Graphics 630), while the Core i5-1155G7 requires a dedicated GPU. Primary use case: Core i5-10400T targets Low Power Desktop. Direct competitor: Core i5-10400T rivals Ryzen 5 3400GE.