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Intel
IntelBX80646I74790K
$348
▲ 534,812 ▼

2 Cores, 2 Threads @3.0GHz, Core.
Release date: Q1 2008.

VS
▲ 8841,778 ▼
 $348 

4 Cores, 8 Threads @4.0GHz, Haswell.
Release date: Q2 2014.

Effective Speed 
+96%
Real World Speed
Performance profile from 524,286 user samples
Benchmark your CPU here
68,540 User Benchmarks
Best Bench: 47% Base clock 3 GHz, turbo 2.95 GHz (avg)
Worst Bench: 24% Base clock 3 GHz, turbo 2.7 GHz (avg)
Poor: 24% Great: 47%
SPEED RANK: 1085th / 1468
Gaming
Gaming 40%
Speed boat
Desktop
Desktop 46%
Yacht
Workstation
Workstation 27%
Raft
455,746 User Benchmarks
Best Bench: 87% Base clock 4 GHz, turbo 4.6 GHz (avg)
Worst Bench: 67% Base clock 4 GHz, turbo 0.7 GHz (avg)
Poor: 67% Great: 87%
SPEED RANK: 270th / 1468
Gaming
Gaming 79%
Battleship
Desktop
Desktop 83%
Aircraft carrier
Workstation
Workstation 65%
Destroyer
Effective Speed
Effective CPU Speed 		40.3 % 78.9 % Hugely faster effective speed.
+96%
Average Score 
+282%
Memory
Avg. Memory Latency 		67.9 Pts 88.1 Pts Lower memory latency.
+30%
1-Core
Avg. Single Core Speed 		41.2 Pts 114 Pts Hugely faster single-core speed.
+177%
2-Core
Avg. Dual Core Speed 		73.8 Pts 216 Pts Hugely faster dual-core speed.
+193%
4-Core
Avg. Quad Core Speed 		76.9 Pts 378 Pts Hugely faster quad-core speed.
+392%
8-Core
Avg. Octa Core Speed 		78.1 Pts 560 Pts Hugely faster octa-core speed.
+617%
Overclocked Score 
+255%
Memory
OC Memory Latency 		78.9 Pts 96.8 Pts Lower OC memory latency.
+23%
1-Core
OC Single Core Speed 		48.1 Pts 128 Pts Hugely faster OC single-core speed.
+166%
2-Core
OC Dual Core Speed 		95.5 Pts 248 Pts Hugely faster OC dual-core speed.
+160%
4-Core
OC Quad Core Speed 		95.4 Pts 433 Pts Hugely faster OC quad-core speed.
+354%
8-Core
OC Octa Core Speed 		95.4 Pts 643 Pts Hugely faster OC octa-core speed.
+574%
Value & Sentiment 
+712%
Market Share
Based on 69,034,367 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % 0.59 % Insanely higher market share.
+2,850%
Value
Value For Money 		63.5 % 74.2 % Better value.
+17%
User Rating
UBM User Rating 		53 % 88 % Much more popular.
+66%
Price
Price (score) 		$53 Hugely cheaper.
+85% 		$348
Nice To Haves 
+202%
Age
Newest 		202 Months 125 Months Much more recent.
+38%
TDP
Thermal Design Power (TDP) 		130 Watts 88 Watts Much more energy efficient.
+32%
Cores
CPU Processing Cores 		2 cores 4 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads 		2 threads 8 threads Hugely higher thread count.
+300%
Lithography
Manufacturing process 		45 nm 22 nm Much newer manufacturing.
+51%
Base Clock
Base Clock Speed 		3 GHz 4 GHz Much faster base frequency.
+33%
Turbo Clock
Turbo Clock Speed 		3 GHz 4.4 GHz Much faster turbo frequency.
+47%
64-Core
OC Multi Core Speed 		95.4 Pts 654 Pts Hugely faster OC 64-core speed.
+586%
64-Core
Avg. Multi Core Speed 		78 Pts 573 Pts Hugely faster 64-core speed.
+635%
Specifications 
Series
CPU Architecture 		Core Haswell
Socket
Motherboard Socket 		LGA775 FCLGA1150
Graphics
Integrated Graphics 		None HD 4600
Launch Date
Launch Date 		Q1'08 Q2'14
Cache
Cache 		6 MB L2 8 MB SmartCache
Embedded Options Available
Embedded Options Available 		Yes No
Lithography
Lithography 		45 nm 22 nm
Recommended Price
Recommended Customer Price 		$149.00 - $179.00 $339.00 - $350.00
Bus Speed
Bus Speed 		1333 MHz FSB 5 GT/s DMI2
Turbo Boost Tech
Intel® Turbo Boost Technology ‡ 		No 2.0
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		No Yes
AES New Instructions
Intel® AES New Instructions 		No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡ 		Yes No

More specs » More specs »
Conclusion 
Average Bench 40.3%
Average Bench 78.9%

The Intel Core 2 Duo E8400 is amongst the fastest of the Core 2 Duo range of now nearly ten year old CPUs. The E8400 is included in our group tests simply as a reference point due to its huge success back in its day. Running at a clock speed of 3.0 GHz the E8400 has an effective speed of 52 which is 85% slower than its modern day counterparts. The relative lack of performance is especially noticeable in the area of multi-core processing as a consequence of the E8400's relatively few two cores. Anyone considering an upgrade needn't hesitate as modern CPUs are not only orders of magnitude faster but also considerably more energy efficient and feature packed. [Oct '14 CPUPro]

MORE DETAILS

The Intel Core i7-4790K, codenamed Devil's Canyon, is an upgraded 4770K, Intel's current flagship i7. The 4790K features an improved thermal interface which enables it to dissipate heat more efficiently than the 4770K. Comparing the 4770K and 4790K shows that stock performance has improved by 13% which is consistent with the base clock jump from 3.5 GHz to 4.0 GHz. OC performance remains unchanged. Comparing the 4790K and 4790 shows that at stock clocks the 4790K is around 16% faster which considering the small price difference makes the 4790K a far better choice. Previously Intel targeted the unlocked K versions at overclockers but with Devil's Canyon they have included VT-d on the K chip and this time it's squarely aimed at both power users and overclockers alike. Until the release of Broadwell in six months, the 4790K is the high end CPU of choice. [Jul '14 CPUPro]

MORE DETAILS

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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]

Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
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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.

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How it works

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  • - CPU tests include: integer, floating and string
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  • - Reports are generated and presented on userbenchmark.com
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  • - See speed test results from other users
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 Frequently Asked Questions

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Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
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