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This setting adheres to the JEDEC Gear specification and is similar to AMD's arrangement with its Ryzen 5000 chips, but Intel's implementation is different: The functional maximum memory overclocking limit of Gear 1 falls between DDR4-3600 and DDR4-3800, depending on chip quality. Gear 2 allows the memory to operate at twice the speed of the memory controller (2:1) and results in higher data transfer rates but also higher latency. As a reminder, Gear 1 is the optimal setting with the memory and memory controller operating at the same speed (1:1), which is best for low-latency applications like gaming. Intel's new Gear 1 and Gear 2 modes present yet another new testing parameter, so we tested the performance impact in gaming between the two modes.
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Core i9-11900K and Core i5-11600K Gear 1 and Gear 2 Memory Modes You can also follow this link to see the differences between Intel's Z590, H570, B560, and H510 chipsets. We have a deeper dive into the chipset and forty-five Z590 motherboards for Rocket Lake and Comet Lake processors here.
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Comet Lake chips also only use a x4 DMI connection on all 500-series motherboards. Most Comet Lake chips are forward-compatible with the new 500-series motherboards that debuted recently, the lone exception being Celeron models with 2MB of CPU cache. The same x4 connection applies if you use a Rocket Lake processor in a 400-series motherboard. Rocket Lake's wider x8 DMI connection is also only active on 'select' 500-series chipsets, so the chip defaults to a x4 connection on B560 and H510 motherboards. The wider DMI connection should help with bottlenecks for devices attached to the chipset, like SSDs in RAID, but caveats apply. Even though Intel widened the DMI bus, it still operates at speeds similar to PCIe 3.0. Intel also widened the DMI 3.0 connection (the pathway that connects the CPU and chipset) from four lanes to eight, doubling throughput up to a theoretical ~7.86 GB/s. However, Rocket Lake-S isn't compatible with H410 and B460 chipsets because they use an older chipset. Rocket Lake-S chips are backward compatible with Z470 and H470 chipsets, and PCIe 4.0 will work on motherboards that support the interface. The Rocket Lake PCIe 4.0 motherboard support matrix is complicated. That means you'll only find one PCIe 4.0 M.2 slot on 500-series motherboards. Intel says this is because it had PCIe 4.0 IP ready for its chip, but not for the chipset. However, the 500-series chipset only supports 24 lanes of PCIe 3.0 connectivity - not PCIe 4.0. Intel also reworked Rocket's internal PCIe subsystem to accommodate a direct x4 connection for M.2 SSDs and a x16 graphics connection to the CPU (the chips now support 20 lanes of PCIe 4.0).
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Rocket Lake is the first Intel lineup for desktop PCs that supports the PCIe 4.0 interface, a needed addition that comes two years after AMD introduced the first PC chips to support the interface. Using cTDP-down, the CPU can also be configured to 35 Watt resulting in a reduced performance.Intel has now enabled memory overclocking on its B560 and H570 chipsets, and that will work with any chip that is compatible with the platform, meaning all 10th-Gen Comet Lake, 11th-Gen Rocket Lake, and 11th-Gen Comet Lake Refresh processors. Intel specifies the TDP with 45 watts and therefore the i7 is only suited for big laptops with good cooling solutions. We do expect a performance improvement, but as a low-end solution it will probably only display current games smoothly at reduced details - if at all. The architecture is identical to that of the Intel HD Graphics 630. The integrated Intel UHD Graphics 630 iGPU is supposed to offer a slightly higher performance as its clock rate has been increased by 50 MHz compared to the UHD 630 of the 8750H CPU. As a high-end model, the i7-9750H is suitable for the most demanding applications and games. Single-core performance has not improved over the Kaby Lake predecessor. eight cores for the high end versions) and the improved 14nm process (14nm++ according to Intel).ĭue to the two additional cores, performance has increased by almost 50% compared to a similar clocked Kaby Lake processor like the Core i7-7820HQ (2.9 - 3.9 GHz). The Coffee Lake architecture is similar to Kaby Lake and differs only in the amount of cores (now max.
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Compared to the predecessor, the Core i7-8750H, the 9750H offers improved clock rates and a larger 元 cache. According to Intel, the CPU is manufactured in an improved 14nm (14nm++) process. The processor clocks at between 2.6 and 4.5 GHz (4 GHz with 6 cores) and can execute up to twelve threads simultaneously thanks to Hyper-Threading. The Intel Core i7-9750H is a high-end processor for laptops with six cores based on the Coffee Lake architecture (2019 refresh, CFL-HR).