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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Core i5-10400F

2020

Why buy it

✅Better for gaming: +47.8% higher average FPS across 4 shared CPU benchmark tests.
✅+50% larger total L3 cache (12 MB vs 8 MB).
✅Costs $178 less on MSRP ($160 MSRP vs $338 MSRP).
✅Delivers 246.9% more PassMark for each dollar spent, at 81.4 vs 23.5 PassMark/$ ($160 MSRP vs $338 MSRP).
✅Draws 65W instead of 100W, a 35W reduction.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Core i7-8709G

2018

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 4 shared CPU benchmark tests.
❌Lower PassMark (7,934 vs 13,029).
❌Smaller total L3 cache (8 MB vs 12 MB).
❌Lower PassMark per dollar, at 23.5 vs 81.4 PassMark/$ ($338 MSRP vs $160 MSRP).
❌53.8% higher power demand at 100W vs 65W.

Core i5-10400F

2020

Core i7-8709G

2018

Why buy it

✅Better for gaming: +47.8% higher average FPS across 4 shared CPU benchmark tests.
✅+50% larger total L3 cache (12 MB vs 8 MB).
✅Costs $178 less on MSRP ($160 MSRP vs $338 MSRP).
✅Delivers 246.9% more PassMark for each dollar spent, at 81.4 vs 23.5 PassMark/$ ($160 MSRP vs $338 MSRP).
✅Draws 65W instead of 100W, a 35W reduction.

Why buy it

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-10400F across 4 shared CPU benchmark tests.
❌Lower PassMark (7,934 vs 13,029).
❌Smaller total L3 cache (8 MB vs 12 MB).
❌Lower PassMark per dollar, at 23.5 vs 81.4 PassMark/$ ($338 MSRP vs $160 MSRP).
❌53.8% higher power demand at 100W vs 65W.

Quick Answers

So, is Core i5-10400F better than Core i7-8709G?

Yes. Core i5-10400F is the better overall CPU here. You are getting a 47.8% average FPS lead across 4 shared CPU game tests in our data, 64.2% better PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.

Which one is better for gaming?

If gaming is the priority, Core i5-10400F is the better pick here. According to our tests, it delivers 47.8% more average FPS across 4 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Core i5-10400F is the better fit. You are getting 64.2% better PassMark, backed by 6 cores and 12 threads. It also carries 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 i5-10400F is the smarter buy today. Core i5-10400F is $178 cheaper on MSRP at $160 MSRP versus $338 MSRP, and it gives you a 47.8% average FPS lead across 4 shared CPU game tests in our data. It is also 246.9% better value on MSRP (81.4 vs 23.5 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

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

Core i5-10400F is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2018), 50% larger total L3 cache (12 MB vs 8 MB), and more multi-core headroom with 6 cores / 12 threads instead of 4/8. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Core i5-10400F Benchmark Check

Core i7-8709G Benchmark Check

Path of Exile 2

Preset	Core i5-10400F	Core i7-8709G
1080p
low	192 FPS	188 FPS
medium	152 FPS	149 FPS
high	123 FPS	119 FPS
ultra	100 FPS	93 FPS
1440p
low	153 FPS	151 FPS
medium	119 FPS	118 FPS
high	97 FPS	93 FPS
ultra	79 FPS	73 FPS
4K
low	82 FPS	71 FPS
medium	70 FPS	59 FPS
high	55 FPS	47 FPS
ultra	43 FPS	37 FPS

Open Core i5-10400F Open Core i7-8709G

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-10400F	Core i7-8709G
1080p
low	326 FPS	198 FPS
medium	318 FPS	198 FPS
high	290 FPS	198 FPS
ultra	253 FPS	191 FPS
1440p
low	326 FPS	198 FPS
medium	292 FPS	198 FPS
high	267 FPS	198 FPS
ultra	234 FPS	169 FPS
4K
low	309 FPS	198 FPS
medium	258 FPS	176 FPS
high	235 FPS	146 FPS
ultra	199 FPS	121 FPS

Open Core i5-10400F Open Core i7-8709G

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-10400F	Core i7-8709G
1080p
low	326 FPS	198 FPS
medium	326 FPS	198 FPS
high	326 FPS	198 FPS
ultra	326 FPS	198 FPS
1440p
low	326 FPS	198 FPS
medium	326 FPS	198 FPS
high	326 FPS	198 FPS
ultra	326 FPS	198 FPS
4K
low	326 FPS	198 FPS
medium	326 FPS	198 FPS
high	289 FPS	198 FPS
ultra	229 FPS	198 FPS

Open Core i5-10400F Open Core i7-8709G

League of Legends

League of Legends

Valorant

Preset	Core i5-10400F	Core i7-8709G
1080p
low	326 FPS	198 FPS
medium	326 FPS	198 FPS
high	326 FPS	198 FPS
ultra	326 FPS	198 FPS
1440p
low	326 FPS	198 FPS
medium	326 FPS	198 FPS
high	326 FPS	198 FPS
ultra	326 FPS	198 FPS
4K
low	326 FPS	198 FPS
medium	326 FPS	198 FPS
high	326 FPS	198 FPS
ultra	326 FPS	198 FPS

Open Core i5-10400F Open Core i7-8709G

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-10400F and Core i7-8709G

Core i5-10400F

The Core i5-10400F is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 6 cores and 12 threads. Base frequency is 2.9 GHz, with boost up to 4.3 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 13,029 points. Launch price was $155.

Core i7-8709G

The Core i7-8709G is manufactured by Intel. It was released in 1 February 2018 (7 years ago). It is based on the Kaby Lake G (2018) architecture. It features 4 cores and 8 threads. Base frequency is 3.1 GHz, with boost up to 4.1 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA2270. Thermal design power (TDP): 65 Watt. Memory support: DDR4-2400. Passmark benchmark score: 7,934 points. Launch price was $149.

⚡

Processing Power

The Core i5-10400F packs 6 cores / 12 threads, while the Core i7-8709G offers 4 cores / 8 threads — the Core i5-10400F has 2 more cores. Boost clocks reach 4.3 GHz on the Core i5-10400F versus 4.1 GHz on the Core i7-8709G — a 4.8% clock advantage for the Core i5-10400F (base: 2.9 GHz vs 3.1 GHz). The Core i5-10400F uses the Comet Lake (2020−2025) architecture (14 nm), while the Core i7-8709G uses Kaby Lake G (2018) (14 nm). In PassMark, the Core i5-10400F scores 13,029 against the Core i7-8709G's 7,934 — a 48.6% lead for the Core i5-10400F. L3 cache: 12 MB (total) on the Core i5-10400F vs 8 MB (total) on the Core i7-8709G.

Feature	Core i5-10400F	Core i7-8709G
Cores / Threads	6 / 12+50%	4 / 8
Boost Clock	4.3 GHz+5%	4.1 GHz
Base Clock	2.9 GHz	3.1 GHz+7%
L3 Cache	12 MB (total)+50%	8 MB (total)
L2 Cache	256K (per core)	256K (per core)
Process	14 nm	14 nm
Architecture	Comet Lake (2020−2025)	Kaby Lake G (2018)
PassMark	13,029+64%	7,934
Cinebench R23 Multi	8,191	—
Geekbench 6 Single	1,454	—
Geekbench 6 Multi	5,783	—

🧠

Memory & Platform

The Core i5-10400F uses the LGA1200 socket (PCIe 3.0), while the Core i7-8709G uses FCBGA2270 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-10400F	Core i7-8709G
Socket	LGA1200	FCBGA2270
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2666	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

🔧

Advanced Features

Virtualization: VT-x, VT-d (Core i5-10400F) / not specified (Core i7-8709G). Primary use case: Core i5-10400F targets Gaming. Direct competitor: Core i5-10400F rivals Ryzen 5 3600.

Feature	Core i5-10400F	Core i7-8709G
Integrated GPU	No	—
Unlocked	No	—
AVX-512	No	—
Virtualization	VT-x, VT-d	—
Target Use	Gaming	—

💰

Value Analysis

The Core i5-10400F launched at $160 MSRP, while the Core i7-8709G debuted at $338. On MSRP ($160 vs $338), the Core i5-10400F is $178 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-10400F delivers 81.4 pts/$ vs 23.5 pts/$ for the Core i7-8709G — making the Core i5-10400F the 110.5% better value option.