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Intel
Intel
▲ 5121 ▼

2 Cores, 4 Threads @3.33 GHz, Clarkdale.
Release date ≤ Q4 2013.

VS
▲ 52136 ▼

2 Cores, 4 Threads @3.4 GHz, Sandy Bridge.
Release date ≤ Q4 2013.

Effective Speed 
+15%
Real World Speed
Performance profile from 9,216 user samples
Benchmark your CPU here
2,457 User Benchmarks
Best Bench: 55% Base clock 5 GHz
Worst Bench: 37% Base clock 3.35 GHz
Poor: 37% Great: 55%
SPEED RANK: 821st / 1467
Gaming
Gaming 50%
Yacht
Desktop
Desktop 57%
Gunboat
Workstation
Workstation 36%
Jet ski
6,759 User Benchmarks
Best Bench: 65% Base clock 3.4 GHz, turbo 3.4 GHz (avg)
Worst Bench: 45% Base clock 3.4 GHz, turbo 3.4 GHz (avg)
Poor: 45% Great: 65%
SPEED RANK: 652nd / 1467
Gaming
Gaming 57%
Gunboat
Desktop
Desktop 65%
Destroyer
Workstation
Workstation 41%
Speed boat
Effective Speed
Effective CPU Speed 		49.8 % 57.5 % Faster effective speed.
+15%
Average Score 
+6%
Memory
Avg. Memory Latency 		66.4 Pts 80.8 Pts Lower memory latency.
+22%
1-Core
Avg. Single Core Speed 		79.4 Pts 79.8 Pts +1%
2-Core
Avg. Dual Core Speed 		138 Pts 139 Pts +1%
4-Core
Avg. Quad Core Speed 		194 Pts 200 Pts +3%
8-Core
Avg. Octa Core Speed 		196 Pts 203 Pts +4%
Overclocked Score 
+6%
Memory
OC Memory Latency 		73.9 Pts 91.9 Pts Lower OC memory latency.
+24%
1-Core
OC Single Core Speed 		90.1 Pts +1% 88.9 Pts
2-Core
OC Dual Core Speed 		165 Pts 169 Pts +2%
4-Core
OC Quad Core Speed 		219 Pts 226 Pts +3%
8-Core
OC Octa Core Speed 		219 Pts 226 Pts +3%
Value & Sentiment 
�%
Market Share
Based on 68,896,934 CPUs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0 %
Value
Value For Money 		70.2 % 79.2 % Better value.
+13%
User Rating
UBM User Rating 		51 % 52 % +2%
Price
Price (score) 		$80 Slightly cheaper.
+7% 		$86
Nice To Haves 
+2%
Age
Newest 		130+ Months +1% 131+ Months
64-Core
OC Multi Core Speed 		220 Pts 226 Pts +3%
64-Core
Avg. Multi Core Speed 		197 Pts 204 Pts +4%
Specifications 
Launch Date
Launch Date 		Q1'10 Q3'11
Cache
Cache 		4 MB SmartCache 3 MB SmartCache
Instruction Set Extensions
Instruction Set Extensions 		SSE4.2 SSE4.1/4.2, AVX
Recommended Price
Recommended Customer Price 		$177.00 $117.00
Bus Speed
Bus Speed 		2.5 GT/s DMI 5 GT/s DMI
Max Memory Size
Max Memory Size (dependent on memory type) 		16 GB 32 GB
Processor Graphics
Processor Graphics ‡ 		Intel® HD Graphics Intel® HD Graphics 2000
Graphics Base Frequency
Graphics Base Frequency 		900 MHz 850 MHz
Thermal Monitoring Technologies
Thermal Monitoring Technologies 		No Yes
Turbo Boost Tech
Intel® Turbo Boost Technology ‡ 		1.0 No
AES New Instructions
Intel® AES New Instructions 		Yes No

More specs » More specs »
Conclusion 
Average Bench 49.8%
Average Bench 57.5%

A higher end Clarkdale hyperthreaded dual core processor. Came with similar amount of cores as i3-540 but comes with performance boosting features such as turbo which boost operating frequency to determined clock. For most users might worth looking to spend $30 more for more powerful i5-750 which comes with 4 core and 4 thread. Still worth it for today albeit for light gaming and modern basic tasks. [Dec '19 ColdSpy]

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We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

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