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IntelBX80684I79700KF
IntelBX80684I58400

8 Cores, 8 Threads @3.60 GHz, 95 W.
Release date ≈ Q1 2019.

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

CSGO
Dust 2 1080p Max
287 EFps Better CSGO EFps.
+23%
233 EFps
GTAV
Franklin & Lamar 1080p Max
109 EFps +2% 107 EFps
Overwatch
Temple of Anubis 1080p Max
137 EFps 138 EFps +1%
PUBG
M249 Training 1080p Max
136 EFps Better PUBG EFps.
+11%
123 EFps
Fortnite
UserBenchmark Island 1080p Max
145 EFps Better Fortnite EFps.
+12%
130 EFps
Real World Speed
Performance profile from 344,956 user samples
32,736 User Benchmarks
Best Bench: 105% Base clock 3.6 GHz, turbo 5.1 GHz (avg)
Worst Bench: 84% Base clock 3.6 GHz, turbo 0.75 GHz (avg)
Poor: 84% Great: 105%
SPEED RANK: 109th / 1468
Gaming
Gaming 97%
Nuclear submarine
Desktop
Desktop 97%
Nuclear submarine
Workstation
Workstation 89%
Aircraft carrier
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
Effective Speed
Effective CPU Speed
97.1 % Faster effective speed.
+19%
81.8 %
Memory
Avg. Memory Latency
90.9 Pts Slightly lower memory latency.
+7%
84.9 Pts
1-Core
Avg. Single Core Speed
140 Pts Faster single-core speed.
+24%
113 Pts
2-Core
Avg. Dual Core Speed
280 Pts Faster dual-core speed.
+25%
224 Pts
4-Core
Avg. Quad Core Speed
555 Pts Faster quad-core speed.
+28%
434 Pts
8-Core
Avg. Octa Core Speed
968 Pts Much faster octa-core speed.
+72%
564 Pts
Memory
OC Memory Latency
96.7 Pts +3% 94.2 Pts
1-Core
OC Single Core Speed
153 Pts Faster OC single-core speed.
+28%
120 Pts
2-Core
OC Dual Core Speed
306 Pts Faster OC dual-core speed.
+29%
237 Pts
4-Core
OC Quad Core Speed
611 Pts Faster OC quad-core speed.
+30%
471 Pts
8-Core
OC Octa Core Speed
1116 Pts Much faster OC octa-core speed.
+70%
657 Pts
Market Share
Based on 68,908,715 CPUs tested
Market Share
Market Share (trailing 30 days)
0.23 % 0.81 % Hugely higher market share.
+252%
Value
Value For Money
106 % Slightly better value.
+7%
98.8 %
User Rating
UBM User Rating
56 % 62 % More popular.
+11%
Price
Price (score)
$205 $140 Much cheaper.
+32%
Age
Newest
68+ Months More recent.
+20%
85 Months
64-Core
OC Multi Core Speed
1149 Pts Much faster OC 64-core speed.
+70%
675 Pts
64-Core
Avg. Multi Core Speed
1006 Pts Much faster 64-core speed.
+71%
588 Pts
Launch Date
Launch Date
Q1'19 Q4'17
Cache
Cache
12 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 SSE4.1/4.2, AVX2
Max Turbo Frequency
Max Turbo Frequency
4.90 GHz 4.00 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (65W)
Max Memory Size
Max Memory Size (dependent on memory type)
128 GB 64 GB
TSX-NI
Intel® TSX-NI
Yes No
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16, 2x8, 1x8+2x4 Up to 1x16 or 2x8 or 1x8+2x4

More specs » More specs »

The iGPU-less variant of i7-9700K. This CPU is priced $30 less than i7-9700K which makes this an option for high refresh rate gamers as this CPU still offers same performance as i7-9700K yet priced lower which leads to better value, higher overclocking potential and probably little bit lower power consumption and thermal generation due to lack of iGPU. [Dec '19 ColdSpy]

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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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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]

Group Test Results

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