IntelBX80684I39350KF
$180
IntelBX80684I58400
 $180 

4 Cores, 4 Threads @4.0GHz, Coffee Lake.
Release date: Q1 2019.

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

CSGO
Dust 2 1080p Max
270 EFps Better CSGO EFps.
+16%
233 EFps
GTAV
Franklin & Lamar 1080p Max
108 EFps +1% 107 EFps
Overwatch
Temple of Anubis 1080p Max
134 EFps 138 EFps +3%
PUBG
M249 Training 1080p Max
125 EFps +2% 123 EFps
Fortnite
UserBenchmark Island 1080p Max
145 EFps Better Fortnite EFps.
+12%
130 EFps
Real World Speed
Performance profile from 313,662 user samples
1,442 User Benchmarks
Best Bench: 100% Base clock 4 GHz, turbo 5.3 GHz (avg)
Worst Bench: 73% Base clock 4 GHz, turbo 4.35 GHz (avg)
Poor: 73% Great: 100%
SPEED RANK: 140th / 1442
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 94%
Nuclear submarine
Workstation
Workstation 69%
Battle cruiser
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: 212th / 1442
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
Effective Speed
Effective CPU Speed
89.3 % Slightly faster effective speed.
+9%
81.8 %
Memory
Avg. Memory Latency
89.1 Pts +5% 84.9 Pts
1-Core
Avg. Single Core Speed
138 Pts Faster single-core speed.
+22%
113 Pts
2-Core
Avg. Dual Core Speed
275 Pts Faster dual-core speed.
+23%
224 Pts
4-Core
Avg. Quad Core Speed
515 Pts Faster quad-core speed.
+19%
434 Pts
8-Core
Avg. Octa Core Speed
523 Pts 564 Pts Slightly faster octa-core speed.
+8%
Memory
OC Memory Latency
96.1 Pts +2% 94.2 Pts
1-Core
OC Single Core Speed
157 Pts Much faster OC single-core speed.
+31%
120 Pts
2-Core
OC Dual Core Speed
313 Pts Much faster OC dual-core speed.
+32%
237 Pts
4-Core
OC Quad Core Speed
613 Pts Much faster OC quad-core speed.
+30%
471 Pts
8-Core
OC Octa Core Speed
613 Pts 657 Pts Slightly faster OC octa-core speed.
+7%
Market Share
Based on 67,711,986 CPUs tested
Market Share
Market Share (trailing 30 days)
0 % 1.04 % Insanely higher market share.
+∞%
Value
Value For Money
101 % 101 % +0%
User Rating
UBM User Rating
62 % +2% 61 %
Price
Price (score)
$180 $131 Cheaper.
+27%
Age
Newest
61 Months More recent.
+22%
78 Months
TDP
Thermal Design Power (TDP)
91 Watts 65 Watts More energy efficient.
+29%
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
4 threads 6 threads Much higher thread count.
+50%
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
4 GHz Much faster base frequency.
+43%
2.8 GHz
Turbo Clock
Turbo Clock Speed
4.6 GHz Faster turbo frequency.
+15%
4 GHz
64-Core
OC Multi Core Speed
608 Pts 675 Pts Faster OC 64-core speed.
+11%
64-Core
Avg. Multi Core Speed
525 Pts 588 Pts Faster 64-core speed.
+12%
Series
CPU Architecture
Coffee Lake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
None UHD 630
Launch Date
Launch Date
Q1'19 Q4'17
Cache
Cache
8 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
4.60 GHz 4.00 GHz
Thermal Solution Specification
Thermal Solution Specification
PCG 2015D (130W) PCG 2015C (65W)
Memory Types
Memory Types
DDR4-2400 DDR4-2666
ECC Memory Supported
ECC Memory Supported ‡
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 »
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The i3-9350KF is a 9th generation quad core Coffee Lake CPU which is designed to be used with a discrete graphics card. It has base/boost turbo frequencies of 4.0/4.6 GHz. The 9350KF generates less heat than its higher core "K" counterparts so getting a decent overclock without expensive cooling is relatively straightforward. Overclocking the 9350KF to 5 GHz with a $20 USD Gammaxx 400 cooler puts the 9350KF at similar single, dual and quad core performance levels as the 9600K, 9700K and 9900K SKUs. Consequently there is not much difference in fps between the 9350KF and any other CPU regardless of core count. At $180 USD the 9350KF sits amongst the top value gaming and desktop CPUs currently available. Comparing the 4 thread 9350KF to AMD’s twice as expensive 16 thread Ryzen 3700X shows that the 9350KF wins hands down in all five of today’s most popular games. The only other CPUs worth considering for unbeatable gaming performance are the 9600K or 9600KF which have 50% more, equally fast cores, for less than 10% more money.  [Nov '19 CPUPro]

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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) April 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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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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Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

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How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
  • - See speed test results from other users
  • - Compare your components to the current market leaders
  • - Explore your best upgrade options with a virtual PC build
  • - Compare your in-game FPS to other users with your hardware

 Frequently Asked Questions

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HDDRAMUSB
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