Head-to-head used CPU value

Intel Core i5-8400 vs Intel Core i7-10700KF

Intel Core i5-8400 currently offers better used gaming performance per dollar. Tracked gaming performance is effectively tied.

Prices updated Sep 2, 2026
Used price differenceIntel Core i7-10700KF is 298.6% higher
Gaming differenceEffectively tied
Value differenceIntel Core i7-10700KF is 74.9% lower

Which CPU Should You Buy?

Gaming value, productivity, and total platform cost can point to different winners.

Best Gaming Value

Intel Core i5-8400 currently provides more tracked gaming performance per used dollar. Recheck the live prices before buying because a small market move can change the winner.

Productivity And Core Workloads

Intel Core i7-10700KF is about 117.3% faster in the tracked Cinebench R23 multi-core result. Core count, cooling, and application behavior still affect real workloads.

Platform And Upgrade Cost

Socket data is incomplete for this pair. Intel Core i5-8400 has a 60 W lower tracked TDP.

Price, Benchmark And Platform Comparison

Used price uses the latest median, then the 25th percentile or minimum as fallback.

MetricIntel Core i5-8400Intel Core i7-10700KF
Current used price$35.12$140
Current new price$103.99$186.42
Relative gaming performance4949
Gaming performance per dollar1.3990.351
Cinebench R23 multi5,79812,600
Cinebench R23 single1,0261,304
Cores / threads6 / 68 / 16
Socket--
TDP65 W125 W
Release year20172020
Qualified sales165
Full valuation

Intel Core i5-8400

Open price history, fair value range, confidence, and complete specifications.

Full valuation

Intel Core i7-10700KF

Open price history, fair value range, confidence, and complete specifications.

Build-level estimate

PC Value Calculator

Estimate what a complete gaming PC containing either processor may be worth.