The AMD Ryzen 5800X3D features stacked L3 cache for the first time. In the test, this brings up to 40 percent more power, but the bottom line is that the model remains a specialist. Because the additional performance is almost only available in games, while the CPU clearly loses ground in every application.
Table of contents
- 1 Efficient Gaming Specialist
- The first Ryzen of its kind
- Two tests, this one with gaming benchmark focus
- This is the AMD Ryzen 7 5800X3D
- AMD Ryzen 7 5800X and 5800X3D in comparison
- 2 benchmarks in applications and games
- The influence of the test course
- Game benchmarks in 720p, FHD and UHD
- Other game benchmarks in 720p< /li>
- Single core benchmarks
- Multi core benchmarks
- 3 Power consumption, temperature and (no) overclocking
- Power consumption in games
- Power consumption idle and single-core
- Power consumption multi-core
- Temperatures under load
- Overclocking and undervolting
< li>4 Conclusion and recommendation
Update 04/21/2022 08:25 a.m.
The AMD Ryzen 7 5800X3D has been available since yesterday afternoon and the start went better than many others in recent months. Even this morning, the CPU can still be bought in various shops, the surcharge, if there is one at all from the RRP of 489 euros*, is very narrow.
< p class="p text-width">Nevertheless, the CPU is not for everyone, as already explained in detail in the article. The price of the Ryzen 9 5900X with twelve cores has fallen slightly again and is available for less than 400 euros*. As an all-rounder, this is quickly a better choice.
The first Ryzen of its kind
One of the technically most interesting innovations – so far this year in any case – is celebrating its premiere in the home desktop PC today with the AMD Ryzen 7 5800X3D: The additional L3 cache mounted on the CPU die, known by AMD as “3D V- labeled Cache.
For almost a year there have been reports about the technology that first appeared in the professional segment with Epyc CPUs based on Milan-X. AMD Ryzen goes on sale on April 20th and the testing embargo ended today.
It's not a 12 or even 16-core Ryzen 5000 that AMD has expanded with 3D V-Cache, but the Ryzen 7 5800X3D based on the Ryzen 7 5800X. In the end, this model would have made the most sense, the manufacturer explains. This and another test will clarify what it is capable of.
Two tests, this one with a gaming benchmark focus
As in November 2021 with Intel Alder Lake, ComputerBase has also created two articles for the launch of the Ryzen 7 5800X3D. This deals with the technical basics, application and gaming performance, the article Gaming benchmarks: Ryzen 7 5800X3D vs. 5800X, Core i9-12900K and 12900KS provides further gaming benchmarks.
- Gaming benchmarks: Ryzen 7 5800X3D vs. 5800X, Core i9-12900K and 12900KS
This is the AMD Ryzen 7 5800X3D
The AMD Ryzen 7 5800X3D is an 8-core, 16-thread processor based on the Zen 3 architecture. In all basic parameters, it follows the previously known Ryzen 7 5800X, which has been available for almost 1.5 years, including the TDP classification of 105 watts, which can be increased to up to 142 watts in load scenarios thanks to AMD Turbo.
In terms of price, AMD places the CPU with an RRP of 489 euros in the official price list slightly above the Ryzen 7 5800X, which is sold in stores well below the RRP. Effectively, the surcharge will be 150 euros and thus still above the price for a Ryzen 9 5900X. At launch, don't expect the new AMD Ryzen 7 5800X3D to deviate much from its RRP of €489 ($449 before tax). How available it will be remains to be seen.
Like all previous models in the desktop, the new Ryzen will use the same socket AM4, and every board theoretically supports it. First, boards with 400 and 500 chipsets were provided with a BIOS update AGESA 1.2.06b/c, in a few weeks some 300 boards could follow, AGESA 1.2.0.7 is the basis for operating an AMD Ryzen 5800X3D also on these boards.
The additional L3 cache in detail
The special feature of the CPU is in the abbreviation “3D”. It stands for the additional L3 cache used for the first time in the desktop, which is stacked directly on the L3 cache of the actual processor in the form of a 64 MB silicon chip – that is, in the third dimension. Sounds pretty simple at first glance, but the technical data already reveal that it's not that easy.
The 64 MB L3 cache is 41 mm² in size and thus almost half the size of the complete 8-core chip with its 81 mm². Even more impressive is the number of transistors in this cache, which are manufactured at TSMC in the same N7 process: 4.7 billion are accommodated in the L3 cache slice, which is more than the entire CCD of the 5800X including 32 MByte L3 -Cache uses: It comes to 4.1 billion circuits.
-
< /li>
Image 1 of 3
In order to accommodate the cache slice on the classic compute die, AMD had to work with TSMC to refine the manufacturing method. The chip is the same, but not as high as in classic processors, but a little thinner. This created the additional space to put the L3 cache on top and ultimately retain the original height including the heat spreader. This is of course important, because the entire infrastructure around the socket AM4 with the compatible coolers stands and falls with it – the same applies to Milan-X in the server.
AMD's chief technical public relations officer explained this in a recent video referenced here. In the end, it couldn't be presented more clearly.
L3 cache costs some latency but provides much more performance
A larger cache does not have only advantages. Of course, addressing it takes a little longer than with a small, more compact cache. AMD explained that it can be up to 3 ns, which is roughly confirmed in the test.
But on the other hand there are the much larger bonuses, which later become clear in benchmarks. Because a 96 MB L3 cache can now store much more data very close to the CPU and does not have to outsource it to the comparatively much slower RAM over a comparatively very long way. In the end, this not only brings a lot of performance, but also saves energy.
Because where data has to be moved over long distances, a lot of energy has to be expended. Each data set that does not end up taking a detour via RAM saves 60 to 90 ns, depending on where the data is located. Games react extremely well to this very fact: the editorial team was able to determine 40 percent not only in one title, but also on different platforms.
AMD Ryzen 7 5800X and 5800X3D in comparison
The table already explained it: There is further differences between the very similar sounding CPUs AMD Ryzen 7 5800X and AMD Ryzen 7 5800X3D. They are primarily in time: on average, it is 300 MHz less for the new model. In this way, the CPU can maintain the TDP of 105 watts plus turbo reserve, which increases the value to 142 watts.
The AMD Ryzen 7 5800X3D is even allowed to clock slightly beyond its specification: 50 MHz more was repeated in the test under load on only two cores, for example. However, all CPUs from the series show this behavior to a greater or lesser extent. For example, the Ryzen 9 5950X, which actually clocks with a maximum of 4.9 GHz Turbo, can be permanently extracted with the sample of the editors over 5.0 GHz.
-
Image 1 of 2
In everyday life, it's these Details that both CPUs apart from the 3D cache still markedly differ. They quickly become visible in Cinebench R20 and Blender, primarily with the clock, of course, which, contrary to paper, is only around 180 MHz apart.
Charts
- CPU clock (Blender Benchmark)
- CPU clock (CB R20 MC)
- CPU clock (CB R20 SC)
- CPU temperature (Blender Benchmark)
- CPU Temperature (CB R20 MC)
- CPU Temperature (CB R20 SC)
CPU Clock (Blender Benchmark) 3.0003.4003.8004.2004.6005.000MHz 150100150200250300350400seconds
- AMD Ryzen 7 5800X3D
- AMD Ryzen 7 5800X
CPU Clock (CB R20 MC) 3.0003.4003.8004.2004.6005.000MHz 12345678910111213141516171819202122232425262728293031323334353637383940seconds
CPU Clock (CB R20 SC) 01.0002.0003.0004.0005.000MHz 150100150200250300350400450500550595seconds
- AMD Ryzen 7 5800X3D
- AMD Ryzen 7 5800X
CPU Temperature (Blender Benchmark) 01836547290°C 150100150200250300350400seconds
- AMD Ryzen 7 5800X3D
- AMD Ryzen 7 5800X
CPU temperature (CB R20 MC) 01836547290° C 12345678910111213141516171819202122232425seconds
- AMD Ryzen 7 5800X3D
- AMD Ryzen 7 5800X
CPU Temperature (CB R20 SC) 0102030405060° C 150100150200250300350400450500550595seconds
- AMD Ryzen 7 5800X3D
< li class="svgchart__item js-svgchart-item" data-item="355115"> AMD Ryzen 7 5800X
A look at the power consumption makes the reduced voltage of the new models clear. AMD explained in advance that it does not want to expect more than 1.35 volts from the processors with a stacked L3 cache, which is not yet the case with the young process. In order to have enough safety reserve, the voltage is even lower in everyday life, compared to the classic Ryzen 7 5800X it remains significantly lower. Of course, this has an impact on consumption, the package power is significantly lower in all situations.
Charts
- CPU Package Power (Blender Benchmark)
- CPU Package Power (CB R20 MC)
- CPU Package Power (CB R20 SC)
- CPU core voltage (CB R20 mc)
< li class="chartbundle-tabs__li" role="presentation">CPU core voltage (Blender Benchmark)
CPU Package Power (Blender Benchmark) 04080120160200Watt (W) 150100150200250300350400seconds
- AMD Ryzen 7 5800X3D
- AMD Ryzen 7 5800X
CPU Package Power (CB R20 MC) 04080120160200Watts (W) 12345678910111213141516171819202122232425seconds
- AMD Ryzen 7 5800X3D
- AMD Ryzen 7 5800X
CPU Package Power (CB R20 SC) 020406080Watt (W) 150100150200250300350400450500550595seconds
- AMD Ryzen 7 5800X3D
- AMD Ryzen 7 5800X
CPU Core Voltage (Blender Benchmark) 0,00,40,81,21,62,0Volt 150100150200250300350400seconds
- AMD Ryzen 7 5800X3D
- AMD Ryzen 7 5800X
CPU Core Voltage (CB R20 MC) 0,00,40,81,21,62,0Volt 12345678910111213141516171819202122232425seconds
- AMD Ryzen 7 5800X3D
- AMD Ryzen 7 5800X
(*) Links marked with an asterisk are affiliate links. In the case of an order via such a link, ComputerBase participates in the sales revenue without increasing the price for the customer.
Page 1/4 Next page
Benchmarks in applications and games