IntelBX80684I78700
IntelBX80684I58400

6 Cores, 12 Threads @3.2GHz, Coffee Lake.
Release date: Q4 2017.

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

Real World Speed
Performance profile from 483,071 user samples
236,370 User Benchmarks
Best Bench: 96% Base clock 3.2 GHz, turbo 4.3 GHz (avg)
Worst Bench: 75% Base clock 3.2 GHz, turbo 3.65 GHz (avg)
Poor: 75% Great: 96%
SPEED RANK: 56th / 1314
Gaming
Gaming 90%
Aircraft carrier
Desktop
Desktop 91%
Nuclear submarine
Workstation
Workstation 80%
Aircraft carrier
246,701 User Benchmarks
Best Bench: 90% Base clock 2.8 GHz, turbo 3.8 GHz (avg)
Worst Bench: 69% Base clock 2.8 GHz, turbo 0.8 GHz (avg)
Poor: 69% Great: 90%
SPEED RANK: 110th / 1314
Gaming
Gaming 84%
Aircraft carrier
Desktop
Desktop 85%
Aircraft carrier
Workstation
Workstation 69%
Battle cruiser
Effective Speed
Effective CPU Speed
89.7 % Slightly faster effective speed.
+7%
84.1 %
Memory
Avg. Memory Latency
90.1 Pts +3% 87.8 Pts
1-Core
Avg. Single Core Mixed Speed
128 Pts Faster single-core speed.
+12%
114 Pts
2-Core
Avg. Dual Core Mixed Speed
251 Pts Faster dual-core speed.
+12%
224 Pts
4-Core
Avg. Quad Core Mixed Speed
480 Pts Faster quad-core speed.
+10%
436 Pts
8-Core
Avg. Octa Core Mixed Speed
773 Pts Faster octa-core speed.
+26%
614 Pts
Memory
OC Memory Latency
95.9 Pts +2% 94.2 Pts
1-Core
OC Single Core Mixed Speed
136 Pts Faster OC single-core speed.
+12%
121 Pts
2-Core
OC Dual Core Mixed Speed
269 Pts Faster OC dual-core speed.
+12%
240 Pts
4-Core
OC Quad Core Mixed Speed
530 Pts Faster OC quad-core speed.
+13%
470 Pts
8-Core
OC Octa Core Mixed Speed
865 Pts Faster OC octa-core speed.
+26%
684 Pts
Market Share
Based on 42,960,638 CPUs tested.
Market Share
Market Share (trailing 30 days)
0.79 % Higher market share.
+16%
0.68 %
Value
Value For Money
87.9 % 95.9 % Slightly better value.
+9%
User Rating
UBM User Rating
71 % More popular.
+15%
62 %
Price
Price (score)
$300 $172 Much cheaper.
+43%
Age
Newest
43 Months 43 Months
TDP
Thermal Design Power (TDP)
65 Watts 65 Watts
Cores
CPU Processing Cores
6 cores 6 cores
Threads
CPU Processing Threads
12 threads Hugely higher thread count.
+100%
6 threads
Lithography
Manufacturing process
14 nm 14 nm
Base Clock
Base Clock Speed
3.2 GHz Faster base frequency.
+14%
2.8 GHz
Turbo Clock
Turbo Clock Speed
4.6 GHz Faster turbo frequency.
+15%
4 GHz
64-Core
OC Multi Core Mixed Speed
1064 Pts Much faster OC 64-core speed.
+55%
688 Pts
64-Core
Avg. Multi Core Mixed Speed
949 Pts Much faster 64-core speed.
+52%
624 Pts
Series
CPU Architecture
Coffee Lake Coffee Lake
Socket
Motherboard Socket
FCLGA1151 FCLGA1151
Graphics
Integrated Graphics
UHD 630 UHD 630
Cache
Cache
12 MB 9 MB
Max Turbo Frequency
Max Turbo Frequency
4.60 GHz 4.00 GHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.20 GHz 1.05 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡
Yes No
TSX-NI
Intel® TSX-NI
Yes No
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Stable Image Platform Program (SIPP)
Intel® Stable Image Platform Program (SIPP)
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No

More specs » More specs »
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The high-end hex core, 12 thread i7-8700 is second in Intel’s line up of 8th generation Coffee Lake CPUs that witnesses an increase in the number of cores at each SKU, as well as further refinement on the 14nm architecture as seen in the 6th and 7th generations. The i7-8700 features a TDP of 65W, 12MB of L3 Cache and 16 PCIe lanes. Although the 8700 has a base clock of 3.2 GHz it has an all core boost of 4.3 GHz and a single core boost of 4.6 GHz. These are unusually high clocks for a non-K SKU, Intel have historically clocked their non-K SKUs around 10% lower than the flagship K variants but with Coffee Lake, the 8700 is almost a match for a stock 8700K. Priced at $320, the i7-8700 offers exceptional single, quad and multi-core processing power to the mainstream market but unfortunately a new 300 series chipset will also need to be factored into the purchase. AMD’s comparably priced Ryzen 7 1700X is an 8 core 16 thread processor which is around 20% faster at multi-threaded tasks, but has around 20% slower single and quad core performance so the choice between these two processors is use case dependant but generally favours Intel for most desktop users whose workloads are typically single or dual core bound.  [Oct '17 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]

MORE DETAILS

Processor Rankings (Price vs Performance) May 2021 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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