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IntelBX80684I58400
AMDYD3200C5FHBOX

6 Cores, 6 Threads @2.8GHz, Coffee Lake.
Release date: Q4 2017.

4 Cores, 4 Threads.
Release date ≈ Q2 2019.

Real World Speed
Performance profile from 416,342 user samples
312,220 User Benchmarks
Best Bench: 89% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 61% Base clock 2.8 GHz, turbo 0.8 GHz (avg)
Poor: 61% Great: 89%
SPEED RANK: 231st / 1468
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
104,122 User Benchmarks
Best Bench: 74% Base clock 3.6 GHz, turbo 4 GHz (avg)
Worst Bench: 46% Base clock 3.6 GHz, turbo 0.55 GHz (avg)
Poor: 46% Great: 74%
SPEED RANK: 561st / 1468
Gaming
Gaming 63%
Destroyer
Desktop
Desktop 69%
Battle cruiser
Workstation
Workstation 48%
Yacht
Effective Speed
Effective CPU Speed
81.8 % Much faster effective speed.
+30%
62.7 %
Memory
Avg. Memory Latency
84.9 Pts Lower memory latency.
+27%
66.9 Pts
1-Core
Avg. Single Core Speed
113 Pts Slightly faster single-core speed.
+10%
103 Pts
2-Core
Avg. Dual Core Speed
224 Pts Slightly faster dual-core speed.
+7%
209 Pts
4-Core
Avg. Quad Core Speed
434 Pts Faster quad-core speed.
+30%
334 Pts
8-Core
Avg. Octa Core Speed
564 Pts Much faster octa-core speed.
+58%
357 Pts
Memory
OC Memory Latency
94.2 Pts Lower OC memory latency.
+16%
81.1 Pts
1-Core
OC Single Core Speed
120 Pts +3% 116 Pts
2-Core
OC Dual Core Speed
237 Pts +1% 234 Pts
4-Core
OC Quad Core Speed
471 Pts Faster OC quad-core speed.
+12%
419 Pts
8-Core
OC Octa Core Speed
657 Pts Much faster OC octa-core speed.
+52%
431 Pts
Market Share
Based on 69,029,644 CPUs tested
Market Share
Market Share (trailing 30 days)
0.91 % Hugely higher market share.
+469%
0.16 %
Value
Value For Money
104 % Slightly better value.
+9%
95.6 %
User Rating
UBM User Rating
62 % 64 % +3%
Price
Price (score)
$115 $60 Much cheaper.
+48%
Age
Newest
85 Months 65+ Months More recent.
+24%
64-Core
OC Multi Core Speed
675 Pts Much faster OC 64-core speed.
+56%
433 Pts
64-Core
Avg. Multi Core Speed
588 Pts Much faster 64-core speed.
+63%
360 Pts

The i5-8400 is a competitively priced hex-core processor from Intel’s 8th generation of Core processors (Coffee Lake). Along with the release of the unlocked i5-8600K, this is the first time that six-core processors have featured in the i5 line-up. Like the other Coffee Lake processors, the i5-8400 is based upon an improved version of Intel’s 14nm architecture which featured in both Skylake and Kaby Lake. Early benchmarks reveal that for average quad core usage (most games employ a maximum of four cores) the i5-8400 performs way above its pay grade. It achieves quad core mixed speeds close to Intel’s outgoing 2017 flagship the $300, quad-core, 8 thread i7-7700k, which to date has been a strong favourite for high-end gaming setups. On paper, the i5-8400 has a base clock of 2.8 GHz (Intel are significantly downplaying the performance of this SKU by giving it a relatively low nominal base clock), an all core boost of 3.8 GHz (this is the effective base clock figure that counts) and a single core boost of 4 GHz. This compares reasonably well to the i5-8600K which has a base clock of 3.6 GHz, all core boost of 4.1 GHz and a single core boost of 4.3 GHz. The i5-8400 also features 9MB of L3 cache and an energy-thrifty TDP of 65W. Priced at under $190, the i5-8400 offers fantastic value for money. Unfortunately, like the other Coffee Lake processors, the i5-8400 will require a new 300 series motherboard, and at the time of writing, the only available version is Intel’s high-end Z370 which isn't an ideal pairing for the i5-8400. The Z series motherboards are designed to cater for the unlocked and overclockable "K" SKUs. Cheaper 300 series motherboards will be available in 2018 at which time the 8400 will offer even better value for money. [Oct '17 CPUPro]

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Still an excellent APU for gamers on low budget. [Oct '19 ColdSpy]

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Processor Rankings (Price vs Performance) November 2024 CPU Rankings

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

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  • Best user rated - User sentiment trumps benchmarks for this comparison.
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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