IntelBX80684I58400
IntelBX80637I73770
$297

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

 $297 

4 Cores, 8 Threads @3.4GHz, Ivy Bridge.
Release date: Q1 2012.

Real World Speed
Performance profile from 590,427 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: 212th / 1442
Gaming
Gaming 82%
Aircraft carrier
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 66%
Battle cruiser
278,207 User Benchmarks
Best Bench: 76% Base clock 3.4 GHz, turbo 4.1 GHz (avg)
Worst Bench: 57% Base clock 3.4 GHz, turbo 3.65 GHz (avg)
Poor: 57% Great: 76%
SPEED RANK: 423rd / 1442
Gaming
Gaming 69%
Battle cruiser
Desktop
Desktop 73%
Battleship
Workstation
Workstation 55%
Yacht
Effective Speed
Effective CPU Speed
81.8 % Faster effective speed.
+19%
69 %
Memory
Avg. Memory Latency
84.9 Pts +2% 83 Pts
1-Core
Avg. Single Core Speed
113 Pts Faster single-core speed.
+24%
91.3 Pts
2-Core
Avg. Dual Core Speed
224 Pts Faster dual-core speed.
+29%
174 Pts
4-Core
Avg. Quad Core Speed
434 Pts Much faster quad-core speed.
+45%
299 Pts
8-Core
Avg. Octa Core Speed
564 Pts Faster octa-core speed.
+29%
436 Pts
Memory
OC Memory Latency
94.2 Pts +1% 93.1 Pts
1-Core
OC Single Core Speed
120 Pts Faster OC single-core speed.
+19%
101 Pts
2-Core
OC Dual Core Speed
237 Pts Faster OC dual-core speed.
+20%
198 Pts
4-Core
OC Quad Core Speed
471 Pts Much faster OC quad-core speed.
+37%
345 Pts
8-Core
OC Octa Core Speed
657 Pts Much faster OC octa-core speed.
+32%
497 Pts
Market Share
Based on 67,794,717 CPUs tested
Market Share
Market Share (trailing 30 days)
0.88 % Much higher market share.
+52%
0.58 %
Value
Value For Money
101 % Much better value.
+49%
67.7 %
User Rating
UBM User Rating
61 % Slightly more popular.
+5%
58 %
Price
Price (score)
$131 Much cheaper.
+56%
$297
Age
Newest
79 Months Much more recent.
+46%
146 Months
TDP
Thermal Design Power (TDP)
65 Watts More energy efficient.
+16%
77 Watts
Cores
CPU Processing Cores
6 cores Much higher core count.
+50%
4 cores
Threads
CPU Processing Threads
6 threads 8 threads Much higher thread count.
+33%
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm
Base Clock
Base Clock Speed
2.8 GHz 3.4 GHz Faster base frequency.
+21%
Turbo Clock
Turbo Clock Speed
4 GHz +3% 3.9 GHz
64-Core
OC Multi Core Speed
675 Pts Much faster OC 64-core speed.
+36%
498 Pts
64-Core
Avg. Multi Core Speed
588 Pts Much faster 64-core speed.
+31%
449 Pts
Series
CPU Architecture
Coffee Lake Ivy Bridge
Socket
Motherboard Socket
FCLGA1151 FCLGA1155
Graphics
Integrated Graphics
UHD 630 HD 4000
Launch Date
Launch Date
Q4'17 Q2'12
Cache
Cache
9 MB 8 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.1/4.2, AVX
Embedded Options Available
Embedded Options Available
No Yes
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
N/A $283.00 - $305.00
Max Turbo Frequency
Max Turbo Frequency
4.00 GHz 3.9 GHz
Bus Speed
Bus Speed
8 GT/s DMI3 5 GT/s DMI
Thermal Solution Specification
Thermal Solution Specification
PCG 2015C (65W) 2011D
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 32 GB
Memory Types
Memory Types
DDR4-2666 DDR3 1333/1600
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 Intel® HD Graphics 4000
Graphics Base Frequency
Graphics Base Frequency
350 MHz 650 MHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.05 GHz 1.15 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
No Yes
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
PCI Express Configurations
PCI Express Configurations ‡
Up to 1x16 or 2x8 or 1x8+2x4 up to 1x16, 2x8, 1x8 & 2x4

More specs » More specs »
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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]

MORE DETAILS

The Intel Core i7-3770 is an Ivy Bridge processor. With four cores and eight threads the 3770 has excellent single , dual and multi-core performance. Comparing the 3770 to the 4770K shows that the 4770K leads by 11% at stock speeds and, thanks to an unlocked multiplier on the 4770K, by 15% at overclocked frequencies. The i7-3770 has a very strong performance profile which includes multi-core capabilities that are likely to be overkill for the majority of desktop users. Comparing the 3770 to the 3770K shows that the unlocked 3770K allows for, on average, an additional 8% increase in performance. [Mar '14 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) May 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.
  • 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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 Frequently Asked Questions

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