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IntelBX80646I74771
IntelBX80646I74790K
$348
▲ 54747 ▼

4 Cores, 8 Threads @3.5GHz, Haswell.
Release date: Q2 2013.

VS
▲ 8841,766 ▼
 $348 

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

Effective Speed 
+7%
Real World Speed
Performance profile from 466,926 user samples
Benchmark your CPU here
11,180 User Benchmarks
Best Bench: 82% Base clock 3.5 GHz, turbo 3.7 GHz (avg)
Worst Bench: 60% Base clock 3.5 GHz, turbo 0.9 GHz (avg)
Poor: 60% Great: 82%
SPEED RANK: 347th / 1468
Gaming
Gaming 73%
Battleship
Desktop
Desktop 77%
Battleship
Workstation
Workstation 60%
Gunboat
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 		73.5 % 78.9 % Slightly faster effective speed.
+7%
Average Score 
+10%
Memory
Avg. Memory Latency 		84.2 Pts 88.1 Pts +5%
1-Core
Avg. Single Core Speed 		101 Pts 114 Pts Faster single-core speed.
+13%
2-Core
Avg. Dual Core Speed 		193 Pts 216 Pts Faster dual-core speed.
+12%
4-Core
Avg. Quad Core Speed 		340 Pts 378 Pts Faster quad-core speed.
+11%
8-Core
Avg. Octa Core Speed 		512 Pts 560 Pts Slightly faster octa-core speed.
+9%
Overclocked Score 
+10%
Memory
OC Memory Latency 		93.9 Pts 96.8 Pts +3%
1-Core
OC Single Core Speed 		111 Pts 128 Pts Faster OC single-core speed.
+15%
2-Core
OC Dual Core Speed 		220 Pts 248 Pts Faster OC dual-core speed.
+13%
4-Core
OC Quad Core Speed 		406 Pts 433 Pts Slightly faster OC quad-core speed.
+7%
8-Core
OC Octa Core Speed 		571 Pts 643 Pts Faster OC octa-core speed.
+13%
Value & Sentiment 
+1,667%
Market Share
Based on 68,909,476 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.68 % Insanely higher market share.
+6,700%
Value
Value For Money 		93.7 % Better value.
+26% 		74.2 %
User Rating
UBM User Rating 		54 % 88 % Much more popular.
+63%
Price
Price (score) 		$115 Much cheaper.
+67% 		$348
Nice To Haves 
+6%
Age
Newest 		137 Months 125 Months Slightly more recent.
+9%
TDP
Thermal Design Power (TDP) 		84 Watts +5% 88 Watts
Cores
CPU Processing Cores 		4 cores 4 cores
Threads
CPU Processing Threads 		8 threads 8 threads
Lithography
Manufacturing process 		22 nm 22 nm
Base Clock
Base Clock Speed 		3.5 GHz 4 GHz Faster base frequency.
+14%
Turbo Clock
Turbo Clock Speed 		3.9 GHz 4.4 GHz Faster turbo frequency.
+13%
64-Core
OC Multi Core Speed 		573 Pts 654 Pts Faster OC 64-core speed.
+14%
64-Core
Avg. Multi Core Speed 		519 Pts 573 Pts Faster 64-core speed.
+10%
Specifications 
Series
CPU Architecture 		Haswell Haswell
Socket
Motherboard Socket 		FCLGA1150 FCLGA1150
Graphics
Integrated Graphics 		HD 4600 HD 4600
Launch Date
Launch Date 		Q3'13 Q2'14
Recommended Price
Recommended Customer Price 		$314.00 - $320.00 $339.00 - $350.00
Max Turbo Frequency
Max Turbo Frequency 		3.9 GHz 4.4 GHz
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.2 GHz 1.25 GHz
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
PCI Express Revision
PCI Express Revision 		Up to 3.0 3.0

More specs » More specs »
Conclusion 
Average Bench 73.5%
Average Bench 78.9%

The Intel i7-4771 is the same as the i7-4770 apart from a 100 MHz increase in base clock from 3.4 GHz to 3.5 GHz. In theory this increase will only impact multi-core workloads because both processors have the same turbo clock of 3.9 GHz which should be engaged during single and dual core workloads. On multi-core workloads the turbo needs to be disabled in order to maintain acceptable core temperatures and operating frequencies drop to base clock where the i7-4771 has a marginal 100 MHz or 2.9% advantage. In other words the two processors should be largely identical. Looking at the i7-4770 vs the i7-4771 benchmarks verifies this. Both the 4770 and 4771 are the current top end mainstream market leaders but for the vast majority of desktop users they are probably overkill as typical consumer use rarely requires more than two cores. [Mar '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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