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Intel
IntelBX80646I74771
▲ 51145 ▼

4 Cores, 4 Threads @2.5 GHz, Sandy Bridge.
Release date ≤ Q4 2013.

VS
▲ 54743 ▼

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

Effective Speed 
+22%
Real World Speed
Performance profile from 22,167 user samples
Benchmark your CPU here
10,987 User Benchmarks
Best Bench: 68% Base clock 2.5 GHz, turbo 2.65 GHz (avg)
Worst Bench: 46% Base clock 2.5 GHz, turbo 2.6 GHz (avg)
Poor: 46% Great: 68%
SPEED RANK: 585th / 1451
Gaming
Gaming 60%
Destroyer
Desktop
Desktop 65%
Destroyer
Workstation
Workstation 44%
Speed boat
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: 336th / 1451
Gaming
Gaming 73%
Battleship
Desktop
Desktop 77%
Battleship
Workstation
Workstation 60%
Gunboat
Effective Speed
Effective CPU Speed 		60.4 % 73.5 % Faster effective speed.
+22%
Average Score 
+51%
Memory
Avg. Memory Latency 		81.1 Pts 84.2 Pts +4%
1-Core
Avg. Single Core Speed 		70.6 Pts 101 Pts Much faster single-core speed.
+43%
2-Core
Avg. Dual Core Speed 		133 Pts 193 Pts Much faster dual-core speed.
+45%
4-Core
Avg. Quad Core Speed 		230 Pts 340 Pts Much faster quad-core speed.
+48%
8-Core
Avg. Octa Core Speed 		236 Pts 512 Pts Hugely faster octa-core speed.
+117%
Overclocked Score 
+47%
Memory
OC Memory Latency 		91.4 Pts 93.9 Pts +3%
1-Core
OC Single Core Speed 		84.5 Pts 111 Pts Much faster OC single-core speed.
+31%
2-Core
OC Dual Core Speed 		157 Pts 220 Pts Much faster OC dual-core speed.
+40%
4-Core
OC Quad Core Speed 		272 Pts 406 Pts Much faster OC quad-core speed.
+49%
8-Core
OC Octa Core Speed 		271 Pts 571 Pts Hugely faster OC octa-core speed.
+111%
Value & Sentiment 
+16%
Market Share
Based on 68,072,170 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.02 % Hugely higher market share.
+100%
Value
Value For Money 		88.2 % 90.8 % +3%
User Rating
UBM User Rating 		51 % 54 % Slightly more popular.
+6%
Price
Price (score) 		$70 Much cheaper.
+46% 		$129
Nice To Haves 
+75%
Age
Newest 		126+ Months +5% 132 Months
64-Core
OC Multi Core Speed 		271 Pts 573 Pts Hugely faster OC 64-core speed.
+111%
64-Core
Avg. Multi Core Speed 		238 Pts 519 Pts Hugely faster 64-core speed.
+118%
Specifications 
Launch Date
Launch Date 		Q1'11 Q3'13
Cache
Cache 		6 MB SmartCache 8 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions 		SSE4.1/4.2, AVX SSE4.1/4.2, AVX 2.0
Lithography
Lithography 		32 nm 22 nm
Recommended Price
Recommended Customer Price 		N/A $314.00 - $320.00
Max Turbo Frequency
Max Turbo Frequency 		3.3 GHz 3.9 GHz
Bus Speed
Bus Speed 		5 GT/s DMI 5 GT/s DMI2
Memory Types
Memory Types 		DDR3 1066/1333 DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
Memory Bandwidth
Max Memory Bandwidth 		21 GB/s 25.6 GB/s
Processor Graphics
Processor Graphics ‡ 		Intel® HD Graphics 2000 Intel® HD Graphics 4600
Graphics Base Frequency
Graphics Base Frequency 		850 MHz 350 MHz
Wireless Display
Intel® Wireless Display 		No Yes
# of Displays Supported
# of Displays Supported ‡ 		2 3
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency 		1.1 GHz 1.2 GHz
Hyper-Threading Tech
Intel® Hyper-Threading Technology ‡ 		No Yes
PCI Express Revision
PCI Express Revision 		2.0 Up to 3.0

More specs » More specs »
Conclusion 
Average Bench 60.4%
Average Bench 73.5%
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I use it on iMac 2011 and it’s ok, fast for most tasks. [Mar '20 Thibs]

MORE DETAILS

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

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