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Test and review: Intel Core i5-8250U and i7-8550U — new generation processors
Intel desktop and mobile processors have not been released at the same time for a long time. But still, such a significant difference in generations, which we observe today, has never been seen before. Therefore, it will not be easy for a potential buyer to understand. With the eighth generation of Core, Intel introduced different architectures for both platforms, and only one can be called new. For desktop computers, Coffee Lake chips will soon be released, for laptops you will have to be content with Kaby Lake Refresh. However, the new mobile chips are still a significant step forward, as you’ll find out in our Core i5-8250U and Core i7-8550U test.
Intel has yet to officially comment on its plans, but the Low/Medium Power and High Power performance tiers will likely remain with the eighth generation Core, known as Kaby Lake R or Kaby Lake Refresh. But what will the two segments look like in the end? Nevertheless, some changes here claim to be sensational. Until now, only High Power processors, whose names ended in HK and HQ, have benefited from four physical CPU cores.
But now that number is also available for U chips. Intel is still committed to Hyper-Threading, so four cores allow up to eight threads to run simultaneously. Compared to its predecessors, we got a doubling of cores and threads.
But there are other significant differences between Kaby Lake and Kaby Lake Refresh, that is, between the seventh and eighth generations of Core. Compared to its direct predecessors, the Core i5-7200U and Core i7-7500U, the 15W TDP, 12 PCI Express lanes, and BGA1356 socket are retained. The process technology used is the same as in the case of Kaby Lake, but with some optimizations. The L3 cache is now twice the size, 6MB and 8MB, but this comes at the cost of doubling the number of cores.
Intel Core i5-8250U offers four CPU cores with a maximum frequency of 3.4 GHz
But in direct comparison, serious differences emerge. The base frequency of 1.6 and 1.8 GHz for the Core i5-8250U and Core i7-8550U processors is very low, which is somewhat reminiscent of the Core m.
The reason lies in the former TDP, in which four, not two, cores now have to work. At the same time, the maximum Turbo frequency has increased, so the 8th generation Core processors should perform well in applications that are not optimized for multithreading. If the program does not load all four cores, then new processors will work faster than their predecessors.
The Intel Core i7-8550U is also equipped with four CPU cores, but it reaches 4.0 GHz, and the L3 cache is larger. If the processors of the first lines reached the maximum Turbo frequency on all cores at the same time, then later Intel differentiated frequencies and loads. The maximum frequency is available with a load of only one or two cores, with a load of three or four cores it is lower. Although there are exceptions like the Core i7-7600U or -7500U. Finally, Kaby Lake Refresh processors support higher memory clocks. For predecessors, it was limited to DDR4-2133, now it is possible to work with DDR4-2400 modules.
| Model | Core i5-8250U | Core i5-7200U | Core i7-8550U | Core i7-7500U |
|---|---|---|---|---|
| Price | $297 | $281 | $409 | $393 |
| Socket | BGA1356 | BGA1356 | BGA1356 | BGA1356 |
| Cores / Threads | 4 / 8 | 2 / 4 | 4 / 8 | 2 / 4 |
| Base frequency | 1.6 GHz | 2.5 GHz | 1.8 GHz | 2.7 GHz |
| Turbo frequency | 3.4 GHz | 3.1 GHz | 4.0 GHz | 3.5 GHz |
| All Core Turbo | 3.4 GHz | 3. 1 GHz |
3.7 GHz | 3.5 GHz |
| L3 cache | 6MB | 3MB | 8MB | 4MB |
| PCI Express 9 lanes0052 | 12 | 12 | 12 | 12 |
| TDP | 15W | 15W | 15W | 15W |
| Process | 14nm+ | 14nm+ | 14nm+ | 14nm+ |
It hardly makes sense to consider the integrated graphics unit in detail. Intel gave the new name UHD Graphics 620, but technically we have the same iGPU as in the seventh generation processors. iGPU belongs to GT2 version with 24 EU execution units, TDP is shared between iGPU and compute cores. All modern standards like Vulkan 1.0 or DirectX 12 (Feature Level 12.1) are supported. As in the case of the HD Graphics 620, Intel indicates a base frequency of 300 MHz, a slightly higher Turbo frequency can be noted from the innovations: the fastest HD Graphics 620 ran at 1.
050 MHz, in the case of the UHD Graphics 620 we get a frequency of up to 1.150 MHz. But, again, the maximum frequencies vary depending on the processor model.
| Model | Intel UHD Graphics 620 | Intel HD Graphics 620 |
|---|---|---|
| Type | GT2 | GT2 |
| Execution Units | 24 | 24 |
| eDRAM | — | — |
| Base frequency | 300 MHz | 300 MHz |
| Turbo frequency | 1.150 MHz | 1.050 MHz |
| DirectX | 12 (12.1) | 12 (12.1) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.2 | 2. 2 |
| Vulcan | 1.0 | 1.0 |
We received two Medion laptops for testing purposes.
The Medion P7649 is a 17-inch multimedia (Full-HD) computer with an Intel Core i5-8250U processor and an NVIDIA GeForce 940MX discrete graphics card with 2 GB of GDDR5 memory. The laptop is equipped with 6 GB DDR4 RAM, 256 GB SSD and 1 TB HDD. Medion P7649offers two USB 2.0 interfaces, one USB 3.1 Gen 1 Type A, one HDMI output, one VGA output, an Ethernet port and built-in WLAN ac and Bluetooth. The battery capacity is 44 Wh.
The Medion Erazer P7651 also belongs to the 17-inch category, but with a Core i7-8550U processor, an NVIDIA GeForce GTX 1050 graphics card with 4 GB of GDDR5 video memory and 16 GB of RAM (DDR4-2400). The capacity of SSD and HDD is 512 GB and 2 TB, respectively. The battery here is also 44 Wh. Except P7649 interfacesadded a USB 3.1 Gen 1 Type C port.
Both laptops are pre-production, so we limited ourselves to CPU tests.
But according to Medion, laptops with the same CPU, BIOS versions and drivers will be available at retail.
<>Test and Review: Intel Core i5-8250U and i7-8550U — Next Generation Processors
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Intel Core i5-8250U Drivers and Specs 2023
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Core i5-8250U is a mobile processor from Intel released on August 21, 2017 and is currently in production and sale. It belongs to the Core i5 family and is built on the Kaby Lake-R architecture. The processor uses an Intel BGA 1356 socket and an unknown PCI express controller. By production 14 nm technical process is used.
The processor has 4 cores and 8 threads, respectively, and a base frequency of 1600 MHz. It supports DDR4 memory and L1 64K (per core), L2 256K (per core) and L3 6MB (shared) cache.
Learn more about the Intel Core i5-8250U:
- Specifications
- Drivers
- Benchmark and performance
- Gaming
Specifications
- Type
- Mobile
- Release date
- August 21, 2017
- Production status
- Active
- Generation
- Core i5
- Code name
- Kaby Lake-R
- Socket
- Intel BGA 1356
- Cores
- 4
- Threads
- 8
- Frequency 90 311
- 1600 MHz
- Turbo
- up to 3.
4 GHz - L1 cache
- 64K (per core)
- L2 cache
- 256K (per core)
- L3 cache
- 6MB (shared)
- Thermal dissipation
- 15 W
- Socket
- Intel BGA 1356
- Manufacturer
- Intel
- Process technology
- 14 nm
- Transistors
- Die size
- 123 mm²
- Connectors
- FC-BGA1356
- tCaseMax
- 72°C
- Frequency
- 1600 MHz
- Turbo
- Heat dissipation
- 15 W
- Type
- Mobile
- Status Production date
- Active
- Release date
- August 21, 2017
- Code name
- Kaby Lake-R
- Generation
- Core i5
- Code
- SR3LA
- Memory support
- DDR4
- ECC mode support
- No.
903 38
Physical
903 12 unknown
Capacity
9No