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tl; dr With the Radeon RX 5700 and the Radeon RX 5700 XT, the Navi GPU with RDNA architecture is entering the scene. The new phase of expansion is significantly improved compared to its predecessor, GCN. Navi comes despite 7 nm, although not yet at competition zoom of Nvidias Turing, but offset by a lower price.
The Radeon RX 5700 and the Radeon RX 5700 XT have been AMD's most important graphics cards for ages, thanks to the GPU. "Navi" does not rely on the GCN architecture launched by Tahiti after more than seven years, but uses the successor "Radeon DNA", which should work much faster. Thus, the new graphics cards are a reference for the future direction of the Radeon series.
Radeon RX 5700 and 5700 XT with RDNA for players
AMD claims to have developed ARNDA specifically for games, taking a slightly different direction from its predecessor, GCN, which statesparallel monster"Very good for Compute, with games in the last iterations but not so well matched, but Navi is already set up for the new Xbox Scarlett and PlayStation 5.
The Radeon RX 5700 (XT) with the Navi-10 graphics processor has been developed as a mid-range product and will replace the former Radeon RX Vega in both versions. But if you want to have a high – end product from AMD, you have to wait until next year, according to current information. Then, RDNA 2 comes with Raytracing support, which is not yet available with RDNA in the current extension phase.
AMD uses for the Radeon RX 5700 a suggested retail price of 369 euros, the Radeon RX 5700 XT costs 419 euros. Thus, the two new Radeon are among the new Nvidia counterparts: GeForce RTX 2060 Super and GeForce RTX 2070 Super (test).
Whether the RDNA price advantage and its performance, energy efficiency and new or modified functionality is sufficient to survive against the Turing ramifications, shows the following test.
This is new for Navi with RDNA
The Radeon RX 5700 and Radeon RX 5700 XT are both based on the Navi-10 graphics processor, manufactured in a state-of-the-art 7 nm process at TSMC, with a size of 251 mm2 and composed of 10.3 billion transistors. This Navi 10 is about half the size of Vega 10, has less than 20% fewer circuits and should still offer better performance in games.
Navi 10 has 40 calculation units, each with 64 ALUs and thus 2,560 shader units. They are all active on the Radeon RX 5700 XT, the Radeon RX 5700 dispensing four calculation units, so there are 2 304 ALU. Compared to Vega 10, there is nearly 38% less ALU. Since the clock frequencies differ only slightly, the higher performance is achieved exclusively by the improved RDNA architecture. As with Vega, any ALU Navi-10 can calculate the "half-precision" (FP16) with twice the power. Double precision (FP64) can be accelerated to 1:16.
When the memory of the Radeon RX 5700 is identical
The memory interface has less news to report. Navi 10s relies on four 64-bit controllers and therefore on a 256-bit interface. This supports HBM 2 and GDDR6, but on both Navi products, the price is for the first time used by GDDR6 at AMD. The Radeon RX 5700 and Radeon RX 5700 XT configurations have the same configuration for memory. The interface is fully enabled, the storage capacity is 8 GB GDDR6 and the memory clock is (as in the competition) at 7,000 MHz. At 448 gigabytes per second, the memory bandwidth is about seven percent lower than that of Vega with HBM 2.
The tact of the game is an average turbo
Speaking of clock speeds: On Navi, AMD has introduced a new clock, which, like the typical Nvidia boost, is a "fictional" clock. There is also a basic clock and a maximum turbo clock. But "the game clock" now indicates which clock is to be expected when playing. According to AMD AMD indicates that the game clock is restricted, the frequency should normally be higher than this. The basic clock of the new graphics cards is 1465 MHz (RX 5700) or 1 605 MHz (RX 5700 XT), the gaming clocks of 1625 MHz and 1750 MHz and the maximum frequencies of 1.725 MHz and 1 905 MHz, respectively.
Unlike Vega, AMD does not specify maximum power consumption for new GPU graphics cards, but only a "standard power supply", which is the entire graphics card. For the Radeon RX 5700, the value is 185 watts, for the Radeon RX 5700 XT, it is 225 watts. According to external tools such as GPU-Z, GPUs require 155 watts or 185 watts. What this means in practice, the editors have determined as usual later in the test.
The first consumer graphics card with PCIe 4.0
It should be noted that Navi 10 is the first mainstream GPU capable of handling PCIe 4.0. Until now, only the Vega 20, but the so equipped Radeon VII, is throttled to the PCIe 3.0 standard. On the Radeon RX 5700 (XT), the twice-faster interface is enabled. This can only be used on the new X570 motherboards in combination with a new Ryzen 3000 – AMD introduced both in parallel with Navi.
- AMD Ryzen 3000 in the test: it's the crowning
Currently, it is unlikely that players can benefit in the short term. The effects of the embargo on daily life have not yet been tested. More technical information about RDNA and Navi can be found in the introduction to the Radeon RX 5700 and Radeon RX 5700 XT.
Radeon RX 5700 and 5700 XT from AMD in detail
The Radeon RX 5700 and Radeon RX 5700 XT will initially only be available as reference models, either at AMD in its own online store or at Retail Council partners. They are manufactured by PowerColor. Partner cards will likely follow in August.
The reference design of the two graphics cards is very similar, but not completely identical. Both graphics cards use the same dual-slot cooler with radial fan, only the metal cover is optically more unusual in the XT version and is open at the end. Even the circuit board with 8GB GDDR6 is identical for both graphics cards.
Navi accelerators with a height of 27.5 cm and a width of 11 cm integrate easily into all modern homes. For the printed circuit, AMD uses a 7-phase digital power supply, which should be well suited for overclocking. Even the radiator itself should cope – at the expense of volume.
A steam chamber and a cooling system with radial fan cooling
But AMD has installed a steam chamber, which does not occupy the full length of the card, as in the Nvidia Founders edition, but is much smaller. Above the Navi-10 graphics processor, heat transfer takes place using a graphite pad (test). The heat is released into the air via a large aluminum radiator. The Radeon RX 5700 XT also has a backplate.
The radial fan itself has a diameter of 75 mm. On the Windows desktop, it works with less than 1,000 revolutions, but the graphics card does not work in silent mode.
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Printed circuit board and cooler of the Radeon RX 5700 XT
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The power supply is identical for XT and non-XT
The Radeon RX 5700 and Radeon RX 5700 XT cards require a six- and eight-pin power connector, although the typical power of the card varies from 185 to 225 watts respectively. The pin would have been feasible. But there would be little potential for overclocking.
Special functions such as RGB lighting are not available on both graphics cards. The Radeon RX 5700 XT has (at least) red-lit Radeon lettering, while the Radeon RX 5700 is completely extinguished.
DisplayPort 1.4 with DSC for high resolution monitors
Both graphics cards can drive monitors via three DisplayPort 1.4 ports, which can also handle DSC compression. These are the first Radeon graphics cards to master this. However, the first monitors supporting DSC via DisplayPort 1.4 are still waiting. In addition, there is a HDMI 2.0b port. On VirtualLink for VR, the AMD contrast is omitted, even though Navi 10 supports VirtualLink.
Technical data at a glance
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On the next page: Clock Frequencies and Landmarks in Full HD, WQHD and Ultra HD
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