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The Zen 4c Cores in the Ryzen 8000G APUs are Clocked Slower than the Zen 4 Cores

AMD has revealed the full specs of its upcoming Ryzen 8000G APUs and it turns out that the Zen 4c cores aren't clocking as high as the Zen 4 cores in the Ryzen 5 8500G and Ryzen 3 8300G. We should point out that the 8300G has a singular Zen 4 core and three Zen 4c Cores here, so there's no confusion. The Zen 4 cores in the 8500G have a base clock of 4.1 GHz, while the 8300G comes in at 4.0 GHz, with both of the APU's Zen 4c cores having a base clock of 3.2 GHz. Oddly enough, AMD lists the overall base clock of the 8500G as 3.5 GHz and the 8300G as 3.4 GHz with a notice that reads "Represents the average effective base frequency of all cores." AMD is in other words averaging the clock speeds of the two different cores to come up with an approximate base clock.

The Zen 4 cores in the 8500G boost up to 5 GHz, with the 8300G boosting to 4.9 GHz, whereas the Zen 4c cores in the 8500G boost up to 3.7 GHz and in the 8300G to 3.6 GHz. Here AMD doesn't provide an estimated frequency equivalent. Despite being budget models in the Ryzen 8000G-series of APUs, both SKUs get two USB4 ports with full 40 Gbps capabilities, plus a pair of USB 3.2 Gen 2 (10 Gbps) ports. Furthermore the Radeon 740M GPU will be clocked at 2.8 GHz in both APUs, but both SKUs are limited to a mere four graphics cores, whereas the Ryzen 5 8600G gets eight at the same clock speed and the Ryzen 7 8700G gets 12 at 2.9 GHz. All four APUs also support DisplayPort 2.1.

AMD's Phoenix 1 and Phoenix 2 APUs Differ in PCIe Lane Count, Affects NVMe Drive Performance and GPU PCIe Lane Count

At CES, AMD didn't give away too many technical details of its upcoming Ryzen 8000G-series APUs, but details are starting to trickle out and it's not all good news. As has been known for some time, AMD is using two different chips to make the Ryzen 8000G APUs and they're known as the Phoenix 1 and Phoenix 2, where the Phoenix 2 parts feature Zen 4c cores, which are not present in the Phoenix 1 APUs. This in and of itself shouldn't be a huge issue, although the Zen 4c CPU cores can be slightly slower in some tasks based on testing of AMD's EPYC server parts.

However, PCGamesN noticed that Gigabyte has posted the full specs for the B650E Aorus Elite X AX Ice motherboard and it looks like there's a much bigger difference between the Phoenix 1 and Phoenix 2 based APUs. Namely, the Phoenix 2 APUs have fewer PCIe lanes and as such are limited to two PCIe 4.0 lanes for the secondary NVMe slot. As if this wasn't bad enough, the Phoenix 2 APUs only have four PCIe 4.0 lanes for add-in GPUs, whereas the Phoenix 1 APUs have eight. This is very likely to lead to reduced performance if a higher-end GPU is used with such an APU. Note that this will vary depending on the motherboard design, but many B650/B650E boards feature a similar design with regards to the PCIe lanes coming from the CPU socket. Luckily, it's easy to avoid this issue, as the Ryzen 5 8600G and the Ryzen 7 8700G are both Phoenix 1 designs, whereas the Ryzen 5 8500G is the only Phoenix 2 design available in retail, as the Ryzen 3 8300G is an OEM only part.

Intel Core i5-8500, i5-8600 (non-K), and Celeron G49xx Listed on Newegg

Four of Intel's latest 8th generation Core "Coffee Lake" processors that are part of the company's second wave of products for the LGA1151 (300-series) platform, surfaced on Newegg. These include the Core i5-8500 (model: BX80684I58500), the Core i5-8600 non-K (BX80684I58600), the Celeron G4920 (BX80684G4920), and the G4900. The Core i5-8500 and i5-8600 fill the price-performance gap between the i5-8400 and the i5-8600K; while the G4900 could be the cheapest processor you can buy on this platform. The i5-8500 is listed at USD $215.99, the i5-8600 at $239.99, the G4920 at $65.99, and the G4900 at $54.99. The product pages don't include specs yet, but at the time of this writing, both the i5-8500 and the G4920 can be added to cart. Intel is planning to expand its 8th generation Core, Pentium, and Celeron processor families before the end of Q1-2018, along with motherboards based on the more cost-effective B360 Express and H310 Express chipsets.

Intel Coffee Lake-S Core i3-8300, i5-8500 Release Date, Lineup Pricing Outed

Intel's 8th gen, Coffee Lake-architecture CPUs will soon see new additions to the lineup, if leaked retail dates are correct. While Intel's six-core processors have earned themselves a respectable position in the CPU market - even if outgunned, core-wise, by AMD's Ryzen - the company is in dire need of shoring up its lower-pricing offerings so as to better compete with AMD's full available line-up, which currently offers users many more choices in both platform pricing, features, and processor specs. The date seems to be a make-up gift from the blue giant: it's expected these processors will hit retail on February 14th.
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Aug 14th, 2024 13:31 EDT change timezone

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