Coffee Lake
| Product code | 80684 |
|---|---|
| L1 cache | 64 kiB per core |
| L2 cache | 256 kiB per core |
| L3 cache | Up to 2 MiB per core |
| Created | October 5, 2017[1] |
| Transistors | 14 nm (Tri-Gate) transistors |
| Architecture | x86-64 |
| Instructions | x86-64 |
| Extensions | |
| Socket | Variant of LGA 1151 * |
| Predecessor | Kaby Lake (Optimization) |
| Successor | Mobile: Cannon Lake (Process) Ice Lake (Architecture) |
| GPU | GT2, GT3e |
| Brand name(s) |
|
Coffee Lake is Intel's codename for the second 14 nm process refinement following both Skylake and Kaby Lake. Coffee Lake is rumored to consist of 15/28-watt quad-core U-chips with GT3e or GT2 graphics[2] and 35–45-watt H-series chips with GT3e and up to six cores.[3] The integrated graphics on these Coffee Lake chips allow support for DP 1.2 to HDMI 2.0 and HDCP 2.2 connectivity. Coffee Lake natively supports DDR4-2666 MHz memory in dual channel mode.
Desktop Coffee Lake CPUs introduce a major change in Intel's Core CPUs nomenclature, in that i5 and i7 CPUs feature six cores (along with hyper-threading in the case of the latter). i3 CPUs, having four cores and dropping hyper-threading for the first time, received a change as well.
The chips were released on October 5, 2017.[1] Coffee Lake will be used in conjunction with the 300-series chipset, and will not work with the 100- and 200-series chipsets. Although desktop Coffee Lake processors use the same physical LGA 1151 socket as Skylake and Kaby Lake, the pinout is electrically incompatible with these older processors and motherboards.[4]
Contents
Features[edit]
Coffee Lake CPUs are built using the second refinement of Intel's 14nm process (14++).[5] It features increased transistor gate pitch for a lower current density and higher leakage transistors which allows higher peak power and higher frequency at the expense of die area and idle power.
Coffee Lake marks a shift in the number of cores for Intel's mainstream desktop processors, the first such update for the previous ten-year history of Intel Core CPUs. Mainstream desktop i7 CPUs feature six cores and 12 threads, i5 CPUs feature six single-threaded cores and i3 CPUs feature four single-threaded cores.
Chipsets[edit]
The Z370 chipset, while using a physically identical LGA 1151 socket to the Z270, is electrically incompatible, meaning that older boards do not support Coffee Lake chips.[6][7]
Architecture changes compared to Kaby Lake[edit]
Coffee Lake features largely the same CPU core and performance per MHz as Skylake/Kaby Lake.[8][9] Features specific to Coffee Lake include:
- Increased core count to six cores on Core i5 and i7 parts; Core i3 is now a quad-core brand
- Increased L3 cache in accordance to the number of cores
- Increased turbo clock speeds across i5 and i7 CPUs models (increased by up to 200 MHz)
- Increased iGPU clock speeds by 50MHz
- DDR4 memory support updated for 2666MHz (for i5 and i7 parts) and 2400MHz (for i3 parts); DDR3 memory is no longer supported
- 300 series chipset on the second revision of socket LGA 1151
Kaby Lake Refresh vs. Coffee Lake[edit]
On August 8, 2017, Intel announced that new eighth generation of processors would be revealed the following August 21.[10] As Intel's previous changes in product generations coincided with new microarchitectures, it was unclear[11] but generally expected that the eighth Core generation products would be based on the new Coffee Lake microarchitecture.[12] However, when it was officially announced on August 21, 2017, Intel stated that the eighth generation would be based on multiple microarchitectures, including Kaby Lake,[13] Coffee Lake, and Cannonlake.[14]
Additional core resources in midrange eighth-generation Coffee Lake desktop chips offer significant gains in performance versus previous seventh-generation Intel CPUs in multithreaded workloads. However, the architecture delivers no IPC difference from Skylake or Kaby Lake.[15]
List of Coffee Lake processors[edit]
Desktop processors[edit]
This table shows the current CPUs based on Coffee Lake and their specifications. More Coffee Lake CPUs will be released in the first half of 2018 along with more chipsets.[2]
| Processor branding |
Model | Cores (threads) |
CPU clock rate |
Turbo clock rate[16] [GHz] | GPU | max iGPU clock rate |
L3 cache |
TDP | Memory support |
Socket | Price (USD) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of cores used | ||||||||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | |||||||||||
| Core i7 | 8700K | 6 (12) | 3.7 GHz | 4.7 | 4.6 | 4.5 | 4.4 | 4.3 | UHD Graphics 630 (GT2) |
1.20 GHz | 12 MB | 95 W | DDR4-2666 | LGA 1151[17] (Only compatible with 300 series motherboards) |
$359 | |
| 8700 | 3.2 GHz | 4.6 | 4.5 | 4.4 | 4.3 | 65 W | $303 | |||||||||
| Core i5 | 8600K | 6 (6) | 3.6 GHz | 4.3 | 4.2 | 4.1 | 1.15 GHz | 9 MB | 95 W | $257 | ||||||
| 8400 | 2.8 GHz | 4.0 | 3.9 | 3.8 | 1.05 GHz | 65 W | $182 | |||||||||
| Core i3 | 8350K | 4 (4) | 4.0 GHz | N/A | 1.15 GHz | 8 MB | 91 W | DDR4-2400 | $168 | |||||||
| 8100 | 3.6 GHz | 1.10 GHz | 6 MB | 65 W | $117 | |||||||||||
See also[edit]
References[edit]
- ^ a b "Intel Unveils the 8th Gen Intel Core Processor Family for Desktop, Featuring Intel's Best Gaming Processor Ever - Intel Newsroom". Intel.
- ^ a b Hassan Mujtaba (2016-11-19). "Intel Coffee Lake Mainstream 6 Core Processors Launching in Q1 2018 Alongside 300-Series Cannonlake PCH – Coffee Lake-X Details Leaked Too". wccftech.com. Archived from the original on 2017-09-30. Retrieved 2017-10-19.
- ^ Hassan Mujtaba (2016-07-19). "Intel Planning To Bring 14nm Coffee Lake 6 Core Chips in 2018 on Mainstream PCs – To Coexist With 10nm Cannonlake Processors". wccftech.com. Archived from the original on 2017-08-05. Retrieved 2017-10-19.
- ^ Cutress, Ian. "The AnandTech Coffee Lake Review: Initial Numbers on the Core i7-8700K and Core i5-8400". p. 3. Retrieved 2017-10-06.
- ^ Cutress, Ian. "The AnandTech Coffee Lake Review: Initial Numbers on the Core i7-8700K and Core i5-8400". p. 2. Retrieved 2017-10-05.
- ^ "Intel 300-series chipsets to provide USB 3.1 Gen2 and Gigabit Wi-Fi | KitGuru". www.kitguru.net. Retrieved April 29, 2017.
- ^ Cutress, Ian. "The AnandTech Coffee Lake Review: Initial Numbers on the Core i7-8700K and Core i5-8400". p. 3. Retrieved 2017-10-06.
- ^ "Intel Coffee Lake Core i7-8700K review: The best gaming CPU you can buy". Ars Technica. Retrieved 2017-10-05.
- ^ "Intel Core i7-8700K Review: The New Gaming King". TechSpot. Retrieved 2017-10-05.
- ^ Manion, Wayne (August 8, 2017). "Intel's eighth-generation Core CPUs will shine bright on August 21". Tech Report. Retrieved August 21, 2017.
- ^ Lustenberg, Alex (August 10, 2017). "Podcast #462 - AMD Threadripper, Intel Rumors, and more!". PC Perspective. Retrieved August 21, 2017.
- ^ Cutress, Ian (August 21, 2017). "Intel Launches 8th Generation Core CPUs". Anandtech. Retrieved August 21, 2017.
- ^ Marco Chiappetta (2017-10-05). "Intel Core i7-8700K And Core i5-8400 Review: Coffee Lake - More Cores, Performance And Value". hothardware.com. Archived from the original on 2017-10-05. Retrieved 2017-10-19.
- ^ Shrout, Ryan (August 21, 2017). "Intel announces 8th Generation Core Processors, starting with 15-watt quad-core Kaby Lake refresh for notebooks". PC Per. Retrieved August 21, 2017.
- ^ "Intel Core i7 8700K / i5 8600K / i5 8400 'Coffee Lake' review: affordable six cores!".
- ^ Cutress, Ian. "The AnandTech Coffee Lake Review: Initial Numbers on the Core i7-8700K and Core i5-8400". Retrieved 2017-10-05.
- ^ "8th Gen (S-platform) Intel® Processor Family Datasheet Vol.1". Retrieved 8 October 2017.
External links[edit]
- "Products formerly Coffee Lake". Intel. Archived from the original on 2017-10-05. Retrieved 2017-10-19.
