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IntelBX80646I74771
AMDFD832EWMHKBOX
▲ 54747 ▼

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

VS
▲ 542,883 ▼

8 Cores, 8 Threads @3.2GHz, Piledriver.
Release date: Q3 2014.

Effective Speed 
+27%
Real World Speed
Performance profile from 44,379 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
33,199 User Benchmarks
Best Bench: 65% Base clock 4.4 GHz, turbo 4.35 GHz (avg)
Worst Bench: 47% Base clock 3.2 GHz, turbo 3.3 GHz (avg)
Poor: 47% Great: 65%
SPEED RANK: 641st / 1468
Gaming
Gaming 58%
Gunboat
Desktop
Desktop 60%
Destroyer
Workstation
Workstation 44%
Speed boat
Effective Speed
Effective CPU Speed 		73.5 % Faster effective speed.
+27% 		57.8 %
Average Score 
+61%
Memory
Avg. Memory Latency 		84.2 Pts +4% 80.6 Pts
1-Core
Avg. Single Core Speed 		101 Pts Much faster single-core speed.
+72% 		58.8 Pts
2-Core
Avg. Dual Core Speed 		193 Pts Much faster dual-core speed.
+79% 		108 Pts
4-Core
Avg. Quad Core Speed 		340 Pts Much faster quad-core speed.
+78% 		191 Pts
8-Core
Avg. Octa Core Speed 		512 Pts Much faster octa-core speed.
+72% 		298 Pts
Overclocked Score 
+50%
Memory
OC Memory Latency 		93.9 Pts +3% 91.4 Pts
1-Core
OC Single Core Speed 		111 Pts Much faster OC single-core speed.
+58% 		70.4 Pts
2-Core
OC Dual Core Speed 		220 Pts Much faster OC dual-core speed.
+64% 		134 Pts
4-Core
OC Quad Core Speed 		406 Pts Much faster OC quad-core speed.
+71% 		238 Pts
8-Core
OC Octa Core Speed 		571 Pts Much faster OC octa-core speed.
+54% 		370 Pts
Value & Sentiment 
+∞%
Market Share
Based on 69,048,428 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		93.7 % Slightly better value.
+9% 		86 %
User Rating
UBM User Rating 		54 % 54 %
Price
Price (score) 		$115 $65 Much cheaper.
+43%
Nice To Haves 
+7%
Age
Newest 		137 Months 122 Months More recent.
+11%
TDP
Thermal Design Power (TDP) 		84 Watts More energy efficient.
+12% 		95 Watts
Cores
CPU Processing Cores 		4 cores 8 cores Hugely higher core count.
+100%
Threads
CPU Processing Threads 		8 threads 8 threads
Lithography
Manufacturing process 		22 nm Much newer manufacturing.
+31% 		32 nm
Base Clock
Base Clock Speed 		3.5 GHz Slightly faster base frequency.
+9% 		3.2 GHz
Turbo Clock
Turbo Clock Speed 		3.9 GHz 4 GHz +3%
64-Core
OC Multi Core Speed 		573 Pts Much faster OC 64-core speed.
+52% 		378 Pts
64-Core
Avg. Multi Core Speed 		519 Pts Much faster 64-core speed.
+70% 		305 Pts
Specifications 
Series
CPU Architecture 		Haswell Piledriver
Socket
Motherboard Socket 		FCLGA1150 AM3+
Graphics
Integrated Graphics 		HD 4600 None
Conclusion 
Average Bench 73.5%
Average Bench 57.8%

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 FX-8320E is a Vishera eight core processor based on AMD’s Piledriver architecture. The ‘E’ in the FX-8320E denotes energy efficiency with the FX-8320E boasting a TDP of 95 Watts which is relatively low for FX processors. The FX-8320E was launched in September 2014 at the same time as the FX-8370E. Comparing the 8370E and 8320E shows that the performance profiles are similar with the 25% more expensive 8370E edging ahead, particularly on single core workloads. The 8370E is clocked slightly higher with base/turbo frequencies of 3.3/4.3 GHz versus the 8320E’s 3.2/4.0 GHz. Overall the 8320E scores a mediocre effective speed of 70. Whilst this is sufficient for the majority of desktop applications: web-surfing, word-processing and playing movies, better single-core performance is offered by any number of Intel processors. [Dec '14 CPUPro]

MORE DETAILS

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