Ryzen CPU + Vega Graphics on a Chip: AMD Ryzen 5 2400G & Ryzen 3 2200G Overview

AMD's new Ryzen 5 2400G and Ryzen 3 2200G APUs update entry-level and mid-range product lines and replace the company's Ryzen 5 1400 and Ryzen 3 1200. You can even invalidate the R3 1300X and R5 1500X to some extent. The special thing about these new entry-level chips, in addition to the revised CPU, is that they have integrated Radeon Vega graphics. We saw that this works quite well on laptops a few months ago, but unlike portable systems, there are far fewer restrictions on the desktop.

The new chips, codenamed Raven Ridge, are based on the same 14nm process as the original Ryzen, although AMD markets them as a "14nm +" process, similar to the strategy that Intel recently applied. This essentially means that the manufacturing process is so sophisticated that the clock speeds can be set a little higher, and that's exactly what AMD did here.

In addition to a frequency boost, Raven Ridge chips have a single CCX module, meaning they are limited to four cores (see our original Ryzen test if you get lost). This design has advantages and disadvantages. The main advantage is that there is no latency when moving data between CCX modules, although this is based on our own tests, which didn't seem to be a big problem. The advantage for AMD is that they get the same number of cores in half the area.

AMD's Raven Ridge APUs at a glance

Ryzen 5 2400G Ryzen 3 2200G
Price $ 169 $ 99
CPU cores / threads 4/8 4 / 4th
graphic Vega 11 Vega 8
Base CPU frequency 3.6 GHz 3.5 GHz
Turbo CPU frequency 3.9 GHz 3.7 GHz
L2 cache 512 KB / core
L3 cache 4 MB
GPU cores 704 SPs at 1250 MHz 512 SPs at 1100 MHz
Calculate units 11 CUs 8 CUs
RAM support DDR4-2933
TDP 46-65 W.

The downside, on the other hand, is that you get less CPU overall. With a CCX module, Raven Ridge's L3 cache is reduced from 16MB to 8MB, but AMD has decided to cut it in half again, and these chips only have a 4MB cache. In comparison, the Ryzen 5 1400 had an 8 MB L3 cache and the 1500X packed 16 MB, the 2400G and the 2200G only offer 4 MB. That doesn't sound too encouraging, but AMD believes they have been able to offset this reduction with higher clock speeds.

A reduced cache and memory latency is said to make up for this capacity deficit, and is actually the result of a lower cache. Overall, AMD believes this is a positive net improvement for productivity workloads, and especially games that are more sensitive to memory latency.

Some cutbacks have also been made to reduce production costs. Raven Ridge only contains x8 PCI Express lanes, not 16 like the first generation Ryzen CPUs. AMD has made this sacrifice as it does not believe it will affect the performance of discrete mid-range graphics cards, and it is unlikely that those with an APU will upgrade to a GTX 1080 Ti soon, so this makes sense.

According to AMD, this reduction in PCIe traces also contributes to a smaller and more efficient "uncore". Uncore is a term used by Intel for the first time to describe aspects of the CPU that are not in the core, but are closely related to it for maximum performance. Things like the L3 cache and the on-die storage controller.

AMD also saved money by using a non-metallic TIM for the 2400G and 2200G. We're not sure if the company uses the same toothpaste as Intel, but we'll test the charging temperatures to get an idea of ​​it. Regardless, this confirms what we've already suspected: Intel has made thermal paste cheaper to save production costs, and now AMD has done exactly the same thing for its cheapest CPUs, although at least the company admits it and it also makes more sense on it Budget chips.

Raven Ridge parts also support dual-channel DDR4-2933 memory, which is an important feature for these APUs as memory performance is of paramount importance for integrated graphics. Like the mobile parts, the desktop Raven Ridge CPUs also have Precision Boost 2 technology, which is basically just a more aggressive version of the original Ryzen processors.

And the most notable change, of course, is the addition of Vega graphics. A Vega chip with 11 CUs for the 2400G and 8 CUs for the 2200G is connected to the CPU via the Infinity Fabric. The clock speed is the main advantage of using the Vega architecture over Polaris, as the integrated graphics on both new AMD chips work at over 1000 MHz and can be shifted to 1.5 GHz or higher.

In addition, both parts have a thermal design power of 65 watts, although they can be configured up to 45 watts.

We will test Raven Ridge on a B350 motherboard with 16 GB DDR4-3200 memory. First, we check the application performance before we start playing (with and without a discrete graphics card), along with some memory scaling performance. We'll also talk about overclocking, power consumption, and operating temperatures, so let's get started.

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