Performance
Core i7-8665U
6,75818% of 36,991
Core i5-8259U26% better
8,528.523% of 36,991
The Core i5-8259U has 26% better performance than the Core i7-8665U for the 3DMark 11 Performance Physics benchmark.
Performance per dollar
Core i7-8665U
16.5214% of 121.53
Core i5-8259U61% better
26.6522% of 121.53
The Core i5-8259U has 61% better value for the money than the Core i7-8665U for the 3DMark 11 Performance Physics benchmark.
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Summary
#
About the Intel Core i7-8665U CPU
The Intel Core i7-8665U is an end-of-life 4-core (8-thread) processor built for the mobile CPU market. It launched in Q4 2018 with a suggested retail price of $409. It is part of Intel's Core i7 lineup, which is based on the Whiskey Lake microarchitecture. The i7-8665U is compatible with Intel BGA 1528 motherboards and is fabricated on Intel's 14 nm manufacturing process. It features the UHD Graphics 620 integrated graphics solution.
Memory and Cache
The Core i7-8665U supports DDR3, DDR4 memory and features a dual-channel memory controller, allowing it to utilize 2 memory modules simultaneously. In terms of cache, the Core i7-8665U 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 8 MB.
Cores and Clock Speeds
The Core i7-8665U features 4 total cores which can process 8 threads simultaneously. The multi-threading capability allows the CPU to execute multiple computational tasks in parallel. The base clock speed of the CPU is 1900.0 MHz, and it can boost up to 4.8 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 i7-8665U includes an integrated graphics solution called UHD Graphics 620. 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 i7-8665U has the 353rd best 3DMark 11 Performance Physics score among the 721 benchmarked CPUs in our database. It achieves 18.27% of the performance of the best benchmarked CPU, the AMD Ryzen 9 7950X3D. Its 6,758 score and $409 launch price (MSRP) gives it a performance per dollar of 16.52. This is the 172nd best in value for the 3DMark 11 Perf. Physics benchmark.
About the Intel Core i5-8259U CPU
The Intel Core i5-8259U is an end-of-life 4-core (8-thread) processor built for the mobile CPU market. It launched in Q2 2018 with a suggested retail price of $320. It is part of Intel's Core i5 lineup, which is based on the Coffee Lake-U microarchitecture. The i5-8259U is compatible with Intel BGA 1526 motherboards and is fabricated on Intel's 14 nm manufacturing process. It features the Iris Pro Plus 655 integrated graphics solution.
Memory and Cache
The Core i5-8259U supports DDR4 memory and features a dual-channel memory controller, allowing it to utilize 2 memory modules simultaneously. In terms of cache, the Core i5-8259U 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 6 MB.
Cores and Clock Speeds
The Core i5-8259U features 4 total cores which can process 8 threads simultaneously. The multi-threading capability allows the CPU to execute multiple computational tasks in parallel. The base clock speed of the CPU is 2.3 GHz, and it can boost up to 3.8 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 i5-8259U includes an integrated graphics solution called Iris Pro Plus 655. 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 i5-8259U has the 293rd best 3DMark 11 Performance Physics score among the 721 benchmarked CPUs in our database. It achieves 23.06% of the performance of the best benchmarked CPU, the AMD Ryzen 9 7950X3D. Its 8,528.5 score and $320 launch price (MSRP) gives it a performance per dollar of 26.65. This is the 137th 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 i7-8665U | Core i5-8259U |
|---|---|---|
| Manufacturer | Intel | Intel |
| Series | Core i7 | Core i5 |
| Market Segment | Mobile | Mobile |
| Release Date | Q4 2018 | Q2 2018 |
| Launch Price (MSRP) | $409 | $320 |
| Production Status | End-of-life | End-of-life |
| Shop | Check Price | Check Price |
Benchmark Performance
#
Performance
Core i7-8665U
6,75818% of 36,991
Core i5-8259U26% better
8,528.523% of 36,991
The Core i5-8259U has 26% better performance than the Core i7-8665U for the 3DMark 11 Performance Physics benchmark.
The Core i7-8665U is ranked 353rd with a score of 6,758, and the Core i5-8259U is ranked 293rd with a score of 8,528.5.
Performance per dollar
Core i7-8665U
16.5214% of 121.53
Core i5-8259U61% better
26.6522% of 121.53
The Core i5-8259U has 61% better value for the money than the Core i7-8665U for the 3DMark 11 Performance Physics benchmark.
The Core i7-8665U is ranked 172nd with a performance per dollar of 16.52, and the Core i5-8259U is ranked 137th with a performance per dollar of 26.65.
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 i7-8665U or
| CPU | Benchmark Performance | |
|---|---|---|
| Core i7-4930MX | 8,727.5 | +29% |
| Core i7-4910MQ | 8,706 | +29% |
| Core i5-8259U | 8,528.5 | +26% |
| Core i7-4900MQ | 8,490 | +26% |
| Core i7-2960XM | 8,098 | +20% |
| Core i7-4712HQ | 6,991 | +3% |
| Core i7-3630QM | 6,954 | +3% |
| Core i7-8665U | 6,758 | |
| Core i7-8565U | 6,739 | -0% |
| Core i5-7440HQ | 6,583 | -3% |
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 i7-8665U or
| CPU | Performance Per Dollar | |
|---|---|---|
| Core i7-11370H | 27.51 | +66% |
| Core i7-11375H | 26.88 | +63% |
| Core i5-8259U | 26.65 | +61% |
| Core i7-7820HK | 26.51 | +60% |
| Core i5-7440HQ | 26.33 | +59% |
| Core i7-7920HQ | 17.62 | +7% |
| Core i7-4702MQ | 16.62 | +1% |
| Core i7-8665U | 16.52 | |
| Core i7-8565U | 16.48 | -0% |
| Core i3-N300 | 16.13 | -2% |
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 i7-8665U | Core i5-8259U |
|---|---|---|
| 3DMark 11 Performance Physics | 6,758 | 8,528.5 (+26.2%) |
| 3DMark Time Spy CPU | 2,723 | 3,132 (+15.02%) |
| Cinebench R15 Multi-Core | 670 (+8.94%) | 615 |
| Cinebench R15 Single-Core | 180 (+21.05%) | 148.7 |
| Geekbench 6.2 Multi-Core | -- | 4,105 |
| Geekbench 6.2 Single-Core | -- | 1,237 |
| CPU Mark Multi-Thread | 6,266 | 7,892 (+25.95%) |
| CPU Mark Single-Thread | 2,196 | 2,204 (+0.36%) |
Benchmarks Source: Notebookcheck
Technical Specs
#
Manufacturing Details
Information about the CPU's manufacturing like its foundry, process size, and transistor count.
| Spec | Core i7-8665U | Core i5-8259U |
|---|---|---|
| Manufacturer | Intel | Intel |
| Foundry | Intel | Intel |
| Process Size | 14 nm | 14 nm |
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 i7-8665U | Core i5-8259U |
|---|---|---|
| Series | Core i7 | Core i5 |
| Microarchitecture | Whiskey Lake | Coffee Lake-U |
| Codename | Whiskey Lake-U | Coffee Lake-U |
| Memory Support | DDR3, DDR4 | DDR4 |
| Memory Channels | Dual-channel | Dual-channel |
| ECC Memory | No | 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 i7-8665U | Core i5-8259U |
|---|---|---|
| Cores | 4 | 4 |
| Threads | 8 | 8 |
| Clock Speed | 1900.0 MHz | 2.3 GHz |
| Turbo Clock | 4.8 GHz | 3.8 GHz |
| Base Clock | 100 MHz | 100 MHz |
| Multiplier | 19.0x | 23.0x |
| Multiplier Unlocked | No | 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 i7-8665U | Core i5-8259U |
|---|---|---|
| L1 Cache | 64 KB | 64 KB |
| L2 Cache | 256 KB | 256 KB |
| L3 Cache | 8 MB | 6 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 i7-8665U | Core i5-8259U |
|---|---|---|
| Socket | Intel BGA 1528 | Intel BGA 1526 |
| PCI Express | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Thermal Design Power (TDP) | 15 W | 28 W |
| TJ Max | 100 °C | 100 °C |
Graphics, Features, & Extensions
Additional CPU features like its bundled coolers, integrated graphics, and extensions/technologies.
| Spec | Core i7-8665U | Core i5-8259U |
|---|---|---|
| Integrated Graphics | UHD Graphics 620 | Iris Pro Plus 655 |
| Extensions / Technologies | MMX, SSE, SSE2, SSE3, SSSE3, SSE4.2, AVX, AVX2, EIST, Intel 64, XD bit, VT-x, VT-d, HTT, AES-NI, TSX, TXT, CLMUL, FMA3, F16C, BMI1, BMI2, vPro, Boost 2.0 | MMX, SSE, SSE2, SSE3, SSSE3, SSE4.2, AVX, AVX2, EIST, Intel 64, XD bit, VT-x, VT-d, HTT, AES-NI, TSX, TXT, CLMUL, FMA3, F16C, BMI1, BMI2, 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.