Gaming graphics card: Radeon RX 6700 XT versus GeForce RTX 3070

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AMD will launch the Radeon RX 6700 XT on March 18, 2021. In advance, the chip manufacturer revealed the specifications, a performance assessment and the price. The graphics chip Navi 22 is used – the little brother of Navi 21, which sits on the Radeon RX 6900 XT, RX 6800 XT and RX 6800.

The Radeon RX 6700 XT uses 2560 shader cores, a third less than the Radeon RX 6800. In addition, AMD is cutting the memory interface from 256 to 192 bits and the so-called infinity cache from 128 to 96 MB. As a result, the storage capacity drops from 16 to 12 GB GDDR6 – that’s still more than enough for a graphics card of this performance class. The connection is made via 16 PCI Express 4.0 lanes.

Specifications of the Radeon RX 6700 XT compared

model

RX 6700 XT

RX 6800

RX 5700 XT

GPU

Navi 22

Navi 21

Navi 10

Compute Units

40

60

40

Shader cores

2560

3840

2560

Game- / max. Boost

2424 / 2581 MHz

1815 / 2105 MHz

1755 / 1905 MHz

Computing power (FP32) *

12,4 TFlops

13,9 TFlops

9,8 TFlops

Graphics memory

12 GByte GDDR6

16 GByte GDDR6

8 GByte GDDR6

Infinity Cache

96 MByte

128 MByte

Transfer rate

384 GByte/s

512 GByte/s

448 GByte/s

Total Board Power

230 Watt

250 Watt

225 Watt

* calculated based on the typical game boost

The performance difference between the Radeon RX 6700 XT and the Radeon RX 6800 is lower than the GPU expansion suggests. Thanks to the high GPU clock frequency, the new model catches up with its faster sister: AMD calls a typical game clock (“Game Boost”) of 2424 MHz – a third more than the Radeon RX 6800. The Radeon RX 6700 XT therefore has a raw performance of around 12.4 TFlops, only a good 10 percent less than the 6800 graphics card.

This is reflected in AMD’s self-created benchmarks, in which the Radeon RX 6700 XT can compete with Nvidia’s GeForce RTX 3070. Sometimes one graphics card is faster, sometimes the other. The GeForce RTX 3070 should have an advantage especially in 3D games with ray tracing graphics effects. In return, the AMD model has 4 GB more SDRAM and is at least slightly cheaper on paper.

According to AMD’s own benchmarks, the Radeon RX 6700 XT is on the same level as Nvidia’s GeForce RTX 3070.

(Image: AMD)

Compared to the Radeon RX 5700 XT, performance and efficiency increase: The total power consumption increases minimally by 230 watts, but the Radeon RX 6700 XT would have to be a good third faster thanks to the high GPU clock and the revised RDNA-2 architecture.

Meanwhile, the Navi-22 GPU inherits almost all functions of the Navi-21 graphics chip used so far, including HDMI 2.1 and the AV1 decoder for videos. The USB Type-C connection with DisplayPort mode and charging function, however, is omitted.


(Image: AMD)

The sales start falls on March 18, 2021. AMD wants to offer its own reference design with two axial fans for 480 US dollars, which equates to around 475 euros including VAT (not included in US prices). At the same time, the manufacturer cards from ASRock, Asus, Gigabyte, MSI, Powercolor, Sapphire and XFX start.

The previous graphics card presentations have shown, however, that price recommendations are currently not much more than smoke and mirrors – a large contingent is not expected in mid-March.


(mma)

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Gaming graphics card Radeon GeForce RTX

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