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IntelBX80646I74771
IntelBX80646I74790
▲ 54747 ▼

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

VS
▲ 618,661 ▼

4 Cores, 8 Threads @3.6GHz, Haswell.
Release date: Q2 2014.

Effective Speed 
+3%
Real World Speed
Performance profile from 266,207 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
255,027 User Benchmarks
Best Bench: 80% Base clock 3.6 GHz, turbo 4 GHz (avg)
Worst Bench: 58% Base clock 3.6 GHz, turbo 1.5 GHz (avg)
Poor: 58% Great: 80%
SPEED RANK: 391st / 1468
Gaming
Gaming 71%
Battleship
Desktop
Desktop 75%
Battleship
Workstation
Workstation 58%
Gunboat
Effective Speed
Effective CPU Speed 		73.5 % +3% 71.4 %
Average Score 
+4%
Memory
Avg. Memory Latency 		84.2 Pts +2% 82.6 Pts
1-Core
Avg. Single Core Speed 		101 Pts +3% 98.4 Pts
2-Core
Avg. Dual Core Speed 		193 Pts +3% 187 Pts
4-Core
Avg. Quad Core Speed 		340 Pts +4% 327 Pts
8-Core
Avg. Octa Core Speed 		512 Pts Slightly faster octa-core speed.
+6% 		482 Pts
Overclocked Score 
+3%
Memory
OC Memory Latency 		93.9 Pts +0% 93.6 Pts
1-Core
OC Single Core Speed 		111 Pts +2% 109 Pts
2-Core
OC Dual Core Speed 		220 Pts +3% 214 Pts
4-Core
OC Quad Core Speed 		406 Pts Slightly faster OC quad-core speed.
+8% 		377 Pts
8-Core
OC Octa Core Speed 		571 Pts +4% 551 Pts
Value & Sentiment 
+1,478%
Market Share
Based on 68,909,476 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.6 % Insanely higher market share.
+5,900%
Value
Value For Money 		93.7 % +3% 91 %
User Rating
UBM User Rating 		54 % 61 % More popular.
+13%
Price
Price (score) 		$115 $115
Nice To Haves 
+1%
Age
Newest 		137 Months 126 Months Slightly more recent.
+8%
TDP
Thermal Design Power (TDP) 		84 Watts 84 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 3.6 GHz +3%
Turbo Clock
Turbo Clock Speed 		3.9 GHz 4 GHz +3%
64-Core
OC Multi Core Speed 		573 Pts +3% 556 Pts
64-Core
Avg. Multi Core Speed 		519 Pts +5% 495 Pts
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 $303.00 - $312.00
Max Turbo Frequency
Max Turbo Frequency 		3.9 GHz 4 GHz

More specs » More specs »
Conclusion 
Average Bench 73.5%
Average Bench 71.4%

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 Core i7-4790 is the third upgrade to Intel's flagship quad core hyper-threaded CPU. This version, like its predecessor the i7-4771, gets a 100 MHz bump in stock frequency and additionally the i7-4790 also gets a 100 MHz turbo frequency bump. These improvements (~4%) are marginal and practically impossible to discern in day to day use. Looking at a benchmark comparison between the 4771 and 4790 verifies that there is little difference between the two CPUs. Although the i7-4790 isn't much of a step forward, it's still one of the best (locked) mainstream processors on the market. AMD hasn't been able to compete with Intel on single threaded performance for several years, consequently Intel have no need to push the envelope. Overclockers should wait for the 4790K which is rumoured to be released shortly. [May '14 CPUPro]

MORE DETAILS

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