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IntelBX80646I74771
AMDFD8320FRHKBOX
▲ 54747 ▼

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

VS
▲ 564,753 ▼

8 Cores, 8 Threads @3.5GHz, Piledriver.
Release date: Q4 2012.

Effective Speed 
+26%
Real World Speed
Performance profile from 117,634 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
106,454 User Benchmarks
Best Bench: 65% Base clock 4.5 GHz, turbo 4.5 GHz (avg)
Worst Bench: 47% Base clock 3.5 GHz, turbo 3.55 GHz (avg)
Poor: 47% Great: 65%
SPEED RANK: 630th / 1468
Gaming
Gaming 59%
Gunboat
Desktop
Desktop 60%
Destroyer
Workstation
Workstation 45%
Speed boat
Effective Speed
Effective CPU Speed 		73.5 % Faster effective speed.
+26% 		58.5 %
Average Score 
+57%
Memory
Avg. Memory Latency 		84.2 Pts +5% 80.5 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.
+72% 		112 Pts
4-Core
Avg. Quad Core Speed 		340 Pts Much faster quad-core speed.
+70% 		200 Pts
8-Core
Avg. Octa Core Speed 		512 Pts Much faster octa-core speed.
+67% 		306 Pts
Overclocked Score 
+51%
Memory
OC Memory Latency 		93.9 Pts +3% 90.9 Pts
1-Core
OC Single Core Speed 		111 Pts Much faster OC single-core speed.
+61% 		68.9 Pts
2-Core
OC Dual Core Speed 		220 Pts Much faster OC dual-core speed.
+67% 		132 Pts
4-Core
OC Quad Core Speed 		406 Pts Much faster OC quad-core speed.
+72% 		236 Pts
8-Core
OC Octa Core Speed 		571 Pts Much faster OC octa-core speed.
+54% 		371 Pts
Value & Sentiment 
+50%
Market Share
Based on 69,050,470 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % 0.06 % Hugely higher market share.
+200%
Value
Value For Money 		93.7 % Better value.
+19% 		78.6 %
User Rating
UBM User Rating 		54 % 56 % +4%
Price
Price (score) 		$115 $95 Cheaper.
+17%
Nice To Haves 
+9%
Age
Newest 		137 Months Slightly more recent.
+6% 		145 Months
TDP
Thermal Design Power (TDP) 		84 Watts Much more energy efficient.
+33% 		125 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 3.5 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.
+50% 		382 Pts
64-Core
Avg. Multi Core Speed 		519 Pts Much faster 64-core speed.
+63% 		318 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 58.5%

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 AMD FX-8320 has the same architecture and specs as the FX-8350, the only difference being the base/turbo clocks of 3.5/4.0 GHz for the 8320 vs 4.0/4.2 GHz for the 8350. Comparing the two models shows that the 8320 lags the 8350 at stock speeds by around 10% but broadly matches it when both processors are overclocked. This combined with the 8320's considerably lower price tag makes the 8320 the better value proposition. In terms of outright performance, as with all AMD CPUs, the FX series have very strong multi-core performance but lag Intel considerably in terms of single and dual-core throughput. [Mar '14 CPUPro]

MORE DETAILS

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