Important preliminary remark
In the end, there are only specially selected games, but I had chosen these from over 20 titles and the preliminary tests with a few cards as examples, because the result in the end was almost exactly the same as with the full scope. The weighting between the titles with pure raster graphics without DXR and with DXR was done in a ratio of 6:4, whereby the four DXR titles are very different. Full ray tracing fun in Cyberpunk 2077, combined with more medium-heavy effects such as in Metro Exodus EE and the hybrid implementation of the lighting, through to Marvel’s Guardians of the Galaxy and Shadow of the Tomb Raider, where ray tracing really only comes into play in a human way.
DXR is being implemented in more and more games and almost all of the current engines now support it. From this point of view, it would be just as unfair to do without it completely as to use such titles exclusively with DXR. As every user has different preferences and some would prefer to do without DXR completely (why actually?), I’ll accommodate all target groups for once. To say it up front: without DXR, the Radeon RX 7800XT could gain around 4 percentage points, especially in WQHD, and the RX 7700XT between 3 and 4 percentage points.
In Full HD, we still notice the influence of CPU limiting in pure rasterization, but it is already quite significant. The Radeon RX 7800XT MBA is a good 3 percentage points behind the PowerColor 7800XT Hellhound Spectral White. This is then only around 1 percentage point behind the old RX 6900XT and around 2 percentage points behind the GeForce RTX 4070 FE, which would even be slightly slower with pure raster performance.
Let’s now look at the min FPS, i.e. the one percent of the slowest rendered frames (P1 Low). The Radeon RX 7800XT performs similarly well here, with the overclocked variant in the form of the Hellhound even clearly beating the RTX 4070.
Even though I have a very detailed chapter on power consumption and load peaks later on (be sure to read it!), I also logged the power consumption for each benchmark for this game selection and also cumulated it at the end, so that a very clear picture already emerges here. Even PowerColor’s version of the RX 7800XT is slightly more economical than the RX 6800XT, although it is significantly faster. Well, it’s more of an evolution, not a revolution. But still.
If you now look at the resulting efficiency, you can see the difference between AMD and NVIDIA even more clearly. Yes, the old generation is beaten in terms of efficiency, but it’s not as great as advertised as an average value.
- 1 - Introduction and technical data
- 2 - Test system in igor'sLAB MIFCOM-PC
- 3 - Teardown: PCB and components
- 4 - Teardown: Cooler and material analysis
- 5 - Gaming-Performance in Full-HD (1920 x 1080)
- 6 - Gaming-Performance in WQHD (2560 x 1440)
- 7 - Details: power consumption and load balancing
- 8 - Transients and PSU recommendation
- 9 - Clock rates, temperatures and infrared analysis
- 10 - Noise level and fan curves
- 11 - Summary and conclusion
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