IntelBX80633I74820K
IntelBX80671I76950X

4 Cores, 8 Threads @3.7GHz, Ivy Bridge-E.
Release date: Q3 2013.

10 Cores, 20 Threads @3.0GHz, Broadwell-E.
Release date: Q2 2016.

Real World Speed
Performance profile from 29,304 user samples
23,169 User Benchmarks
Best Bench: 81% Base clock 3.6 GHz, turbo 3.6 GHz (avg)
Worst Bench: 61% Base clock 3.7 GHz, turbo 3.75 GHz (avg)
Poor: 61% Great: 81%
SPEED RANK: 369th / 1451
Gaming
Gaming 72%
Battleship
Desktop
Desktop 75%
Battleship
Workstation
Workstation 58%
Gunboat
6,135 User Benchmarks
Best Bench: 100% Base clock 3 GHz, turbo 4.55 GHz (avg)
Worst Bench: 77% Base clock 3 GHz, turbo 1.25 GHz (avg)
Poor: 77% Great: 100%
SPEED RANK: 171st / 1451
Gaming
Gaming 87%
Aircraft carrier
Desktop
Desktop 86%
Aircraft carrier
Workstation
Workstation 90%
Aircraft carrier
Effective Speed
Effective CPU Speed
71.8 % 86.8 % Faster effective speed.
+21%
Memory
Avg. Memory Latency
84.7 Pts 88.2 Pts +4%
1-Core
Avg. Single Core Speed
94 Pts 114 Pts Faster single-core speed.
+21%
2-Core
Avg. Dual Core Speed
182 Pts 228 Pts Faster dual-core speed.
+25%
4-Core
Avg. Quad Core Speed
320 Pts 458 Pts Much faster quad-core speed.
+43%
8-Core
Avg. Octa Core Speed
477 Pts 884 Pts Hugely faster octa-core speed.
+85%
Memory
OC Memory Latency
94 Pts 95.9 Pts +2%
1-Core
OC Single Core Speed
116 Pts 142 Pts Faster OC single-core speed.
+22%
2-Core
OC Dual Core Speed
217 Pts 283 Pts Much faster OC dual-core speed.
+30%
4-Core
OC Quad Core Speed
392 Pts 565 Pts Much faster OC quad-core speed.
+44%
8-Core
OC Octa Core Speed
581 Pts 1118 Pts Hugely faster OC octa-core speed.
+92%
Market Share
Based on 68,070,808 CPUs tested
Market Share
Market Share (trailing 30 days)
0.06 % 0.06 %
Value
Value For Money
92.7 % Better value.
+22%
76.1 %
User Rating
UBM User Rating
55 % 62 % More popular.
+13%
Price
Price (score)
$110 Much cheaper.
+76%
$449
Age
Newest
129 Months 96 Months More recent.
+26%
TDP
Thermal Design Power (TDP)
130 Watts Slightly more energy efficient.
+7%
140 Watts
Cores
CPU Processing Cores
4 cores 10 cores Hugely higher core count.
+150%
Threads
CPU Processing Threads
8 threads 20 threads Hugely higher thread count.
+150%
Lithography
Manufacturing process
22 nm 14 nm Much newer manufacturing.
+36%
Base Clock
Base Clock Speed
3.7 GHz Faster base frequency.
+23%
3 GHz
Turbo Clock
Turbo Clock Speed
3.9 GHz 4 GHz +3%
64-Core
OC Multi Core Speed
583 Pts 1799 Pts Hugely faster OC 64-core speed.
+209%
64-Core
Avg. Multi Core Speed
487 Pts 1470 Pts Hugely faster 64-core speed.
+202%
Series
CPU Architecture
Ivy Bridge-E Broadwell-E
Socket
Motherboard Socket
FCLGA2011 LGA2011-V3
Graphics
Integrated Graphics
None None
Launch Date
Launch Date
Q3'13 Q2'16
Cache
Cache
10 MB SmartCache 25 MB
Lithography
Lithography
22 nm 14 nm
Max Turbo Frequency
Max Turbo Frequency
3.9 GHz 4 GHz
Max Memory Size
Max Memory Size (dependent on memory type)
64 GB 128 GB
Memory Types
Memory Types
DDR3 1333/1600/1866 DDR4 2400/2133

More specs » More specs »
ADVERTISEMENT

This is yet another processor from Intel that demonstrates their total market domination in the high end PC sector. The 4820K isn't really a step forward in any particular direction but rather a variant on what's already been available (performance wise) for a few years. As long as Intel is largely competing with itself they will likely continue with these sorts of incremental releases. The 4820K requires an Intel X79 chipset, which dates back to Sandy Bridge-E and lacks some of the newer features like native USB 3.0 support. An investment in the 4820K only makes sense if you already own an LGA2011 Motherboard and could be seen as good money chasing bad given that the platform is due an upgrade. That said the 4820K is a very capable multi-core processor and it sits amongst the top handful of processors in this regard. For typical consumers a Haswell i3 will offer mostly identical response times, a lower energy footprint and a significantly more competitive price. [Nov '13 CPUPro]

MORE DETAILS

The Core i7-6950X is Intel’s new top of the range prosumer CPU. This flagship model has a whopping ten cores with base and turbo frequencies of 3.0 and 4.0 GHz respectively. The 6950X is based on the 14 nm Broadwell-E architecture. It has a TDP of 140 watts, 40 PCIe 3.0 lanes and no integrated graphics. Because of its ridiculously high MSRP of around $2,000, this CPU only makes sense for very niche use cases which could include top end graphics design or video production workstations. Comparing the 6950X and 6700K shows that for typical desktop use the 6950X only offers a gain of around 20% for a whopping 6 fold price increase. This is because desktop computing largely depends on single core performance and the Skylake i7-6700K is both clocked higher and has higher IPC due to its one generation lead over the 6950X. That said, if you want the most powerful desktop processor money can buy, then the 6950X hits the spot. [Jun '16 CPUPro]

MORE DETAILS

Processor Rankings (Price vs Performance) June 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]

ADVERTISEMENT

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.
How Fast Is Your CPU? (Bench your build) Size up your PC in less than a minute

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.

UserBenchmark of the month

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

 Best User Rated

Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
Why don’t PC brands endorse UserBenchmark?
Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
Why don’t youtubers promote UserBenchmark?
We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
Why does UserBenchmark have negative trustpilot reviews?
The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
Why is UserBenchmark popular with users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
CPUGPUSSD
Intel Core i5-12600K $164Nvidia RTX 4060 $293WD Black SN850X M.2 2TB $150
Intel Core i5-12400F $110Nvidia RTX 4060-Ti $385WD Black SN850X M.2 1TB $89
Intel Core i5-13600K $249Nvidia RTX 4070 $549Crucial T700 M.2 4TB $369
Today's hottest deals
If you buy something via a price link, UserBenchmark may earn a commission
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback