Performance
Core i7-7660U34% better
5,23014% of 36,991
Core i5-5257U
3,89811% of 36,991
The Core i7-7660U has 34% better performance than the Core i5-5257U for the 3DMark 11 Performance Physics benchmark.
Performance per dollar
Core i7-7660U
No data available
Core i5-5257U
12.3710% of 121.53
The Core i5-5257U has 10% of the performance per dollar compared to the leader for the 3DMark 11 Performance Physics benchmark: Intel Core i5-13400F.
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Summary
#
About the Intel Core i7-7660U CPU
The Intel Core i7-7660U is a 2-core (4-thread) processor built for the mobile CPU market. The i7-7660U is compatible with FCBGA1356 motherboards and is fabricated on a 14 nm manufacturing process. It features the Intel Iris Plus Graphics 640 integrated graphics solution.
Memory and Cache
In terms of cache, the Core i7-7660U has multiple levels of cache. Its L1 cache, which is the smallest and fastest, is 128 KB in size, providing rapid access to crucial instructions. Its L2 cache, at 512 KB, is larger but slower than the L1. Its L3 cache, a shared resource among the CPU's cores, has a capacity of 4 MB.
Cores and Clock Speeds
The Core i7-7660U features 2 total cores which can process 4 threads simultaneously. The multi-threading capability allows the CPU to execute multiple computational tasks in parallel. The base clock speed of the CPU is 2500.0 MHz, and it can boost up to 4000.0 MHz under heavy workloads. Higher clock speeds result in better performance for the same microarchitecture.
Integrated Graphics
The Core i7-7660U includes an integrated graphics solution called Intel Iris Plus Graphics 640. This graphics processor is directly integrated into the CPU and is not as powerful as a dedicated graphics card. While integrated graphics can handle basic tasks like web browsing and office applications, it is not suitable for more demanding activities such as gaming or video editing, where a dedicated graphics card offers superior performance.
Benchmark Performance
The Core i7-7660U has the 402nd best 3DMark 11 Performance Physics score among the 721 benchmarked CPUs in our database. It achieves 14.14% of the performance of the best benchmarked CPU, the AMD Ryzen 9 7950X3D.
About the Intel Core i5-5257U CPU
The Intel Core i5-5257U is an end-of-life 2-core (4-thread) processor built for the mobile CPU market. It launched in Q1 2015 with a suggested retail price of $315. It is part of Intel's Core i5 lineup, which is based on the Broadwell-U microarchitecture. The i5-5257U is compatible with Intel BGA 1168 motherboards and is fabricated on Intel's 14 nm manufacturing process. It features the Intel Iris 6100 integrated graphics solution.
Memory and Cache
The Core i5-5257U supports DDR3 memory and features a dual-channel memory controller, allowing it to utilize 2 memory modules simultaneously. In terms of cache, the Core i5-5257U has multiple levels of cache. Its L1 cache, which is the smallest and fastest, is 64 KB in size, providing rapid access to crucial instructions. Its L2 cache, at 256 KB, is larger but slower than the L1. Its L3 cache, a shared resource among the CPU's cores, has a capacity of 3 MB.
Cores and Clock Speeds
The Core i5-5257U features 2 total cores which can process 4 threads simultaneously. The multi-threading capability allows the CPU to execute multiple computational tasks in parallel. The base clock speed of the CPU is 2.7 GHz, and it can boost up to 3.1 GHz under heavy workloads. Higher clock speeds result in better performance for the same microarchitecture. The multiplier is locked, making it incapable of overclocking for pushing performance further.
Integrated Graphics
The Core i5-5257U includes an integrated graphics solution called Intel Iris 6100. This graphics processor is directly integrated into the CPU and is not as powerful as a dedicated graphics card. While integrated graphics can handle basic tasks like web browsing and office applications, it is not suitable for more demanding activities such as gaming or video editing, where a dedicated graphics card offers superior performance.
Benchmark Performance & Value
The Core i5-5257U has the 465th best 3DMark 11 Performance Physics score among the 721 benchmarked CPUs in our database. It achieves 10.54% of the performance of the best benchmarked CPU, the AMD Ryzen 9 7950X3D. Its 3,898 score and $315 launch price (MSRP) gives it a performance per dollar of 12.37. This is the 182nd best in value for the 3DMark 11 Perf. Physics benchmark.
General Info
General overview of the CPU, including details like its manufacturer, release date, launch price, and current production status.
| Info | Core i7-7660U | Core i5-5257U |
|---|---|---|
| Manufacturer | Intel | Intel |
| Series | -- | Core i5 |
| Market Segment | Mobile | Mobile |
| Release Date | -- | Q1 2015 |
| Launch Price (MSRP) | -- | $315 |
| Production Status | -- | End-of-life |
| Shop | Check Price | Check Price |
Benchmark Performance
#
Performance
Core i7-7660U34% better
5,23014% of 36,991
Core i5-5257U
3,89811% of 36,991
The Core i7-7660U has 34% better performance than the Core i5-5257U for the 3DMark 11 Performance Physics benchmark.
The Core i7-7660U is ranked 402nd with a score of 5,230, and the Core i5-5257U is ranked 465th with a score of 3,898.
Performance per dollar
Core i7-7660U
No data available
Core i5-5257U
12.3710% of 121.53
The Core i5-5257U has 23% of the performance per dollar compared to the leader for the 3DMark 11 Performance Physics benchmark: AMD Ryzen 9 7950X3D.
Core i5-5257U's 12.37 performance per dollar ranks it 0th among the other benchmarked CPUs in our database.
Relative Performance
The average score in the benchmark test can be compared to similar CPUs to assess relative performance. Generally, powerful CPUs tend to have higher scores.
Choose Baseline CPU:Core i7-7660U or
| CPU | Benchmark Performance | |
|---|---|---|
| Pentium Gold 7505 | 5,285 | +1% |
| Core i7-6567U | 5,251 | +0% |
| Core i7-7660U | 5,230 | |
| Ryzen 3 2300U | 5,191 | -1% |
| Core i3-1005G1 | 5,140 | -2% |
| Core i7-820QM | 4,002 | -23% |
| Core i7-720QM | 3,936 | -25% |
| Core i5-5257U | 3,898 | -25% |
| Core i7-5650U | 3,800 | -27% |
| Core i7-5600U | 3,792 | -27% |
Relative Value For Money
The average performance per dollar in the benchmark test can be compared to similar CPUs to assess relative value. A higher score implies a better value for your money.
Choose Baseline CPU:Core i7-7660U orCore i5-5257U
| CPU | Performance Per Dollar | |
|---|---|---|
| Pentium Silver N5000 | 16.27 | +31% |
| Core i3-N300 | 16.13 | +30% |
| Core i7-4910MQ | 15.27 | +23% |
| Core i3-8145U | 15.19 | +23% |
| Core i7-4900MQ | 14.89 | +20% |
| Core i5-5257U | 12.37 | |
| Core i5-5200U | 11.98 | -3% |
| Core i7-740QM | 11.77 | -5% |
| Core i5-5250U | 11.39 | -8% |
| Core i5-5350U | 11.04 | -11% |
Benchmark Scores
This table showcases the average performance scores achieved by both CPUs across industry-standard benchmark tests. These scores provide a valuable insight into overall performance. Powerful CPUs tend to have higher scores.
- Popular
| Benchmark | Core i7-7660U | Core i5-5257U |
|---|---|---|
| 3DMark 11 Performance Physics | 5,230 (+34.17%) | 3,898 |
| 3DMark Time Spy CPU | 1,989.5 | -- |
| Cinebench R15 Multi-Core | 403.5 (+27.69%) | 316 |
| Cinebench R15 Single-Core | 158.5 (+27.82%) | 124 |
| Geekbench 6.2 Multi-Core | 2,267 (+32.03%) | 1,717 |
| Geekbench 6.2 Single-Core | 1,150 (+26.65%) | 908 |
| CPU Mark Multi-Thread | 4,109 (+46.44%) | 2,806 |
| CPU Mark Single-Thread | 2,162 (+25.55%) | 1,722 |
Benchmarks Source: Notebookcheck
Technical Specs
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Manufacturing Details
Information about the CPU's manufacturing like its foundry, process size, and transistor count.
| Spec | Core i7-7660U | Core i5-5257U |
|---|---|---|
| Manufacturer | Intel | Intel |
| Foundry | -- | Intel |
| Process Size | 14 nm | 14 nm |
| Transistors | -- | 1,900 million |
Architecture
CPU architecture specs like its memory channels, memory support, and microarchitecture. Newer CPU architectures can minimize bottlenecks and improve execution efficiency using more advanced techniques.
| Spec | Core i7-7660U | Core i5-5257U |
|---|---|---|
| Series | -- | Core i5 |
| Microarchitecture | -- | Broadwell-U |
| Codename | Kaby Lake-U/Y | Broadwell-U |
| Memory Support | -- | DDR3 |
| Memory Channels | -- | Dual-channel |
| ECC Memory | -- | No |
Cores & Clock Speeds
Processing power information like its cores and clock speed. These specs impact how fast they can handle instructions and tasks. These have a strong impact on the CPU's performance.
| Spec | Core i7-7660U | Core i5-5257U |
|---|---|---|
| Cores | 2 | 2 |
| Threads | 4 | 4 |
| Clock Speed | 2500.0 MHz | 2.7 GHz |
| Turbo Clock | 4000.0 MHz | 3.1 GHz |
| Base Clock | -- | 100 MHz |
| Multiplier | -- | 27.0x |
| Multiplier Unlocked | -- | No |
Cache
CPU cache specs like its L1 & L2 cache. These provide the CPU with a small, but super-fast memory access. A larger cache can improve a CPU's performance.
| Spec | Core i7-7660U | Core i5-5257U |
|---|---|---|
| L1 Cache | 128 KB | 64 KB |
| L2 Cache | 512 KB | 256 KB |
| L3 Cache | 4 MB | 3 MB |
Compatibility & Power Consumption
Compatibility and power consumption information like its socket type, thermal design power, power limits. These can help verify the CPU's compatibility with other PC components.
| Spec | Core i7-7660U | Core i5-5257U |
|---|---|---|
| Socket | FCBGA1356 | Intel BGA 1168 |
| PCI Express | -- | PCIe 2.0 x12 |
| Thermal Design Power (TDP) | 15 W | 28 W |
| Tcase Max | -- | 105 °C |
| TJ Max | 100 °C | 105 °C |
Graphics, Features, & Extensions
Additional CPU features like its bundled coolers, integrated graphics, and extensions/technologies.
| Spec | Core i7-7660U | Core i5-5257U |
|---|---|---|
| Integrated Graphics | Intel Iris Plus Graphics 640 | Intel Iris 6100 |
| Extensions / Technologies | -- | MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX2, EIST, 64-bit, XD bit, VT-d, VT-x, Smart Cache, ADX, RDSEED, PREFETCHW, HTT, Boost 2.0 |
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* Performance rating, performance per dollar, and rankings are based on the 3DMark 11 Performance Physics benchmark and MSRP.