IntelBX80684I78700
IntelBX80648I75820K

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

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About

6 Cores, 12 Threads @3.3GHz, Haswell-E.
Release date: Q3 2014.

Real World Speed
Performance profile from 219,981 user samples
149,525 User Benchmarks
Best Bench: 94% Base clock 3.2 GHz, turbo 4.35 GHz (avg)
Worst Bench: 71% Base clock 3.2 GHz, turbo 0.8 GHz (avg)
Poor: 71% Great: 94%
SPEED RANK: 39th / 1206
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 88%
Aircraft carrier
Workstation
Workstation 72%
Battleship
70,456 User Benchmarks
Best Bench: 91% Base clock 3.3 GHz, turbo 4.55 GHz (avg)
Worst Bench: 58% Base clock 3.3 GHz, turbo 0.2 GHz (avg)
Poor: 58% Great: 91%
SPEED RANK: 101st / 1206
Gaming
Gaming 73%
Battleship
Desktop
Desktop 73%
Battleship
Workstation
Workstation 62%
Destroyer
Effective Speed
Effective CPU Speed
86.8 % Faster effective speed.
+19%
72.9 %
1-Core
Avg. Single Core Mixed Speed
128 Pts Faster single-core speed.
+22%
105 Pts
2-Core
Avg. Dual Core Mixed Speed
252 Pts Faster dual-core speed.
+20%
210 Pts
4-Core
Avg. Quad Core Mixed Speed
483 Pts Faster quad-core speed.
+17%
412 Pts
8-Core
Avg. Octa Core Mixed Speed
780 Pts Faster octa-core speed.
+17%
666 Pts
1-Core
OC Single Core Mixed Speed
136 Pts +3% 132 Pts
2-Core
OC Dual Core Mixed Speed
269 Pts +3% 261 Pts
4-Core
OC Quad Core Mixed Speed
531 Pts +2% 522 Pts
8-Core
OC Octa Core Mixed Speed
882 Pts Slightly faster OC octa-core speed.
+5%
839 Pts
Market Share
Based on 26,009,053 CPUs tested.
Market Share
Market Share (trailing 30 days)
1 % Hugely higher market share.
+300%
0.25 %
Value
Value For Money
81.5 % +2% 80 %
User Rating
UBM User Rating
118 % More popular.
+28%
92 %
Price
Price (score)
$350 $198 Much cheaper.
+43%
Age
Newest
29 Months Much more recent.
+57%
67 Months
TDP
Thermal Design Power (TDP)
65 Watts Much more energy efficient.
+54%
140 Watts
Cores
CPU Processing Cores
6 cores 6 cores
Threads
CPU Processing Threads
12 threads 12 threads
Lithography
Manufacturing process
14 nm Much newer manufacturing.
+36%
22 nm
Base Clock
Base Clock Speed
3.2 GHz 3.3 GHz +3%
Turbo Clock
Turbo Clock Speed
4.6 GHz Faster turbo frequency.
+28%
3.6 GHz
64-Core
OC Multi Core Mixed Speed
1070 Pts +3% 1036 Pts
64-Core
Avg. Multi Core Mixed Speed
967 Pts Faster 64-core speed.
+16%
836 Pts
Series
CPU Architecture
Coffee Lake Haswell-E
Socket
Motherboard Socket
FCLGA1151 LGA2011-V3
Graphics
Integrated Graphics
UHD 630 None
Launch Date
Launch Date
Q4'17 Q3'14
Cache
Cache
12 MB 15 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions
SSE4.1/4.2, AVX2 SSE4.2, AVX 2.0, AES
Lithography
Lithography
14 nm 22 nm
Recommended Price
Recommended Customer Price
N/A $389.00 - $396.00
Bus Speed
Bus Speed
8 GT/s DMI3 0 GT/s
Memory Types
Memory Types
DDR4-2666 DDR4 1333/1600/2133
Memory Channels
Max # of Memory Channels
2 4
Processor Graphics
Processor Graphics ‡
Intel® UHD Graphics 630 None
Package Size
Package Size
37.5mm x 37.5mm 52.5mm x 45.0mm
vPro Tech
Intel® vPro™ Technology ‡
Yes No
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
Yes No
Max # of PCI Express Lanes
Max # of PCI Express Lanes
16 28

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]

MORE DETAILS

The Intel Core i7-5820K is the cheapest of three (5820K,5930K,5960X) new Haswell-E prosumer/enthusiast processors. The 5820K sports six physical cores and twelve threads which allow for enormous processing throughput. Unfortunately Intel have somewhat handicapped the 5820K by setting its base clock at just 3.3 GHz, 0.7GHz lower than the class leading 4790K. Comparing the 4790K and 5820K shows that the cheaper i7-4790K is significantly faster at both single and dual threaded workloads. The additional two cores found in the 5820K are not relevant to general computing and as such the 5820K probably makes a better server rather than consumer proposition. The Haswell-E X99 architecture also requires DDR4 RAM which is currently far more expensive than DDR3. Overall the 5820K is a very expensive option and probably best avoided by the vast majority of consumers.  [Sep '14 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) March 2020 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 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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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.
  • - 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.
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  • - Share your opinion by voting.

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