IntelBX80637I73770K
IntelBX80684I58400

4 Cores, 8 Threads @3.5GHz, Ivy Bridge.
Release date: Q2 2012.

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

Real World Speed
Performance profile from 88,115 user samples
56,950 User Benchmarks
Best Bench: 89% Base clock 3.5 GHz, turbo 4.95 GHz (avg)
Worst Bench: 61% Base clock 3.5 GHz, turbo 1.6 GHz (avg)
Poor: 61% Great: 89%
SPEED RANK: 96th / 1128
Gaming
Gaming 74%
Battleship
Desktop
Desktop 75%
Battleship
Workstation
Workstation 54%
Yacht
31,165 User Benchmarks
Best Bench: 94% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 81% Base clock 2.8 GHz, turbo 4 GHz (avg)
Poor: 81% Great: 94%
SPEED RANK: 32nd / 1128
Gaming
Gaming 89%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed
74 % 89.4 % Faster effective speed.
+21%
SC Mixed
Avg. Single Core Mixed Speed
106 Pts 117 Pts Slightly faster single-core speed.
+10%
QC Mixed
Avg. Quad Core Mixed Speed
359 Pts 454 Pts Faster quad-core speed.
+26%
MC Mixed
Avg. Multi Core Mixed Speed
546 Pts 655 Pts Faster multi-core speed.
+20%
SC Mixed
OC Single Core Mixed Speed
124 Pts +1% 123 Pts
QC Mixed
OC Quad Core Mixed Speed
449 Pts 478 Pts Slightly faster OC quad-core speed.
+6%
MC Mixed
OC Multi Core Mixed Speed
647 Pts 704 Pts Slightly faster OC multi-core speed.
+9%
Market Share
Based on 10,992,177 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.53 % 1.42 % Hugely higher market share.
+168%
Value
Value For Money
73.2 % 103 % Much better value.
+41%
User Rating
UBM User Rating
68 % 114 % Much more popular.
+68%
Price
Price (score)
$300 $200 Much cheaper.
+33%
Age
Newest
77 Months 11 Months Hugely more recent.
+86%
TDP
Thermal Design Power (TDP)
77 Watts 65 Watts More energy efficient.
+16%
Cores
CPU Processing Cores
4 cores 6 cores Much higher core count.
+50%
Threads
CPU Processing Threads
8 threads Much higher thread count.
+33%
6 threads
Lithography
Manufacturing process
22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed
3.5 GHz Faster base frequency.
+25%
2.8 GHz
Turbo Clock
Turbo Clock Speed
3.9 GHz 4 GHz +3%
SC Int
Single Core Integer Speed
124 Pts +4% 119 Pts
SC Float
Single Core Floating Point Speed
127 Pts 128 Pts +1%
QC Int
Quad Core Integer Speed
449 Pts 462 Pts +3%
QC Float
Quad Core Floating Point Speed
458 Pts 499 Pts Slightly faster quad-core fp speed.
+9%
MC Int
Multi Core Integer Speed
638 Pts 679 Pts Slightly faster multi-core int speed.
+6%
MC Float
Multi Core Floating Point Speed
634 Pts 739 Pts Faster multi-core fp speed.
+17%
Series
CPU Architecture
Ivy Bridge Coffee Lake
Socket
Motherboard Socket
FCLGA1155 FCLGA1151
Graphics
Integrated Graphics
HD 4000 UHD 630
Launch Date
Launch Date
Q2'12 Q4'17
Cache
Cache
8 MB SmartCache 9 MB
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX SSE4.1/4.2, AVX2
Lithography
Lithography
22 nm 14 nm
Recommended Price
Recommended Customer Price
$332.00 - $342.00 N/A
Bus Speed
Bus Speed
5 GT/s DMI 8 GT/s DMI3
Thermal Solution Specification
Thermal Solution Specification
2011D PCG 2015C (65W)
Max Memory Size
Max Memory Size (dependent on memory type)
32 GB 64 GB
Memory Types
Memory Types
DDR3 1333/1600 DDR4-2666
Processor Graphics
Processor Graphics ‡
Intel® HD Graphics 4000 Intel® UHD Graphics 630
Graphics Base Frequency
Graphics Base Frequency
650 MHz 350 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.05 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
No Yes
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 third gen Ivy Bridge Core i7-3770K can't really be described as a consumer orientated processor. With 8 threads and four cores its capabilities are better aligned to server use. For price insensitive consumers that want the best of the best, this is currently one of the fastest processors available. The PassMark Single Thread score of 2080 points put the 3770K right at the top of the pack in terms of raw processing power and real world performance. The GeekBench and PassMark scores of 17210 and 9653 are within 20% or so of the best we have ever seen. Despite the near record breaking processing throughputs the 3770K is only rated at 77 TDP, which is also very reasonable by historical standards. For typical consumer use there are better value propositions out there. [May '13 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) September 2018 CPU Rankings.

We calculate effective speed which measures real world performance for typical consumers. Effective speed is adjusted by current prices to yield a value for money rating which is geared towards gamers. 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 freeware 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 upgrades.

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  • - CPU tests include: integer, floating and string.
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  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
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 Frequently Asked Questions

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CPUGPUSSD
Intel Core i7-8700K $370Nvidia GTX 1070 $344Samsung 850 Evo 250GB $85
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $114
Intel Core i5-8600K $260AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $150SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $898SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $167SanDisk Ultra Fit 32GB $11
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