Intel
IntelBX80646I74771

4 Cores, 8 Threads @2.5 GHz, Haswell.
Release date ≈ Q2 2014.

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

Real World Speed
Performance profile from 26,737 user samples
15,557 User Benchmarks
Best Bench: 73% Base clock 2.5 GHz, turbo 3.25 GHz (avg)
Worst Bench: 29% Base clock 2.5 GHz, turbo 0.35 GHz (avg)
Poor: 29% Great: 73%
SPEED RANK: 594th / 1451
Gaming
Gaming 60%
Gunboat
Desktop
Desktop 63%
Destroyer
Workstation
Workstation 47%
Yacht
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
59.7 % 73.5 % Faster effective speed.
+23%
Memory
Avg. Memory Latency
71.8 Pts 84.2 Pts Lower memory latency.
+17%
1-Core
Avg. Single Core Speed
80.9 Pts 101 Pts Faster single-core speed.
+25%
2-Core
Avg. Dual Core Speed
153 Pts 193 Pts Faster dual-core speed.
+26%
4-Core
Avg. Quad Core Speed
259 Pts 340 Pts Much faster quad-core speed.
+31%
8-Core
Avg. Octa Core Speed
378 Pts 512 Pts Much faster octa-core speed.
+35%
Memory
OC Memory Latency
86.4 Pts 93.9 Pts Slightly lower OC memory latency.
+9%
1-Core
OC Single Core Speed
98.4 Pts 111 Pts Faster OC single-core speed.
+13%
2-Core
OC Dual Core Speed
191 Pts 220 Pts Faster OC dual-core speed.
+15%
4-Core
OC Quad Core Speed
343 Pts 406 Pts Faster OC quad-core speed.
+18%
8-Core
OC Octa Core Speed
503 Pts 571 Pts Faster OC octa-core speed.
+14%
Market Share
Based on 68,070,107 CPUs tested
Market Share
Market Share (trailing 30 days)
0.07 % Hugely higher market share.
+250%
0.02 %
Value
Value For Money
99.1 % Slightly better value.
+9%
90.8 %
User Rating
UBM User Rating
53 % 54 % +2%
Price
Price (score)
$44 Much cheaper.
+66%
$129
Age
Newest
121+ Months Slightly more recent.
+8%
132 Months
64-Core
OC Multi Core Speed
500 Pts 573 Pts Faster OC 64-core speed.
+15%
64-Core
Avg. Multi Core Speed
384 Pts 519 Pts Much faster 64-core speed.
+35%
Launch Date
Launch Date
Q2'14 Q3'13
Cache
Cache
6 MB SmartCache 8 MB SmartCache
Recommended Price
Recommended Customer Price
$378.00 $314.00 - $320.00
Max Turbo Frequency
Max Turbo Frequency
3.5 GHz 3.9 GHz
Memory Types
Memory Types
DDR3L 1333/1600 DDR3-1333/1600, DDR3L-1333/1600 @ 1.5V
Graphics Base Frequency
Graphics Base Frequency
400 MHz 350 MHz
Graphics Output
Graphics Output
eDP/DP/HDMI/VGA eDP/DP/HDMI/DVI/VGA
Graphics Max Dynamic Frequency
Graphics Max Dynamic Frequency
1.15 GHz 1.2 GHz
Package Size
Package Size
37.5mm x 32mm x 1.6mm 37.5mm x 37.5mm
Virtualization for Directed I/O (VT-d)
Intel® Virtualization Technology for Directed I/O (VT-d) ‡
No Yes
vPro Tech
Intel® vPro™ Technology ‡
No Yes
Trusted Execution Tech
Intel® Trusted Execution Technology ‡
No Yes
PCI Express Revision
PCI Express Revision
3 Up to 3.0
PCI Express Configurations
PCI Express Configurations ‡
1x16, 2x8, 1x8 2x4 Up to 1x16, 2x8, 1x8+2x4

More specs » More specs »
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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]

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