Steve started GamersNexus back when it was just a cool name, and now it's grown into an expansive website with an overwhelming amount of features. He recalls his first difficult decision with GN's direction: "I didn't know whether or not I wanted 'Gamers' to have a possessive apostrophe -- I mean, grammatically it should, but I didn't like it in the name. It was ugly. I also had people who were typing apostrophes into the address bar - sigh. It made sense to just leave it as 'Gamers.'"
First world problems, Steve. First world problems.
This episode of Ask GN focuses on some more technical topics – and ones which we were happy to address in more episodic fashion. The first question asked us to address why a framerate in excess of the refresh rate appears to allow smoother gameplay. It's a good question, too; it'd seem like the excess doesn't actually add anything, if just thinking about a 60Hz target, but there's a lot more to it than that.
This topic leads to discussion on monitor overclocking and VRAM measurements and consumption. We've previously covered monitor overclocking, for the curious, and we've also previously talked about how GPU-Z doesn't accurately measure VRAM consumption. It's more a measurement of VRAM requested by the game, and because some games will just ask for all the memory, it's hard to know how much is actually utilized (rather than reserved). We talk about that more in the content below:
Part 1 of our interview with AMD's RTG SVP & Chief Architect went live earlier this week, where Raja Koduri talked about shader intrinsic functions that eliminate abstraction layers between hardware and software. In this second and final part of our discussion, we continue on the subject of hardware advancements and limitations of Moore's law, the burden on software to optimize performance to meet hardware capabilities, and GPUOpen.
The conversation started with GPUOpen and new, low-level APIs – DirectX 12 and Vulkan, mainly – which were a key point of discussion during our recent Battlefield 1 benchmark. Koduri emphasized that these low-overhead APIs kick-started an internal effort to open the black box that is the GPU, and begin the process of removing “black magic” (read: abstraction layers) from the game-to-GPU pipeline. The effort was spearheaded by Mantle, now subsumed by Vulkan, and has continued through GPUOpen.
The goal of this content is to show that HBAO and SSAO have negligible performance impact on Battlefield 1 performance when choosing between the two. This benchmark arose following our Battlefield 1 GPU performance analysis, which demonstrated consistent frametimes and frame delivery on both AMD and nVidia devices when using DirectX 11. Two of our YouTube commenters asked if HBAO would create a performance swing that would favor nVidia over AMD and, although we've discussed this topic with several games in the past, we decided to revisit for Battlefield 1. This time, we'll also spend a bit of time defining what ambient occlusion actually is, how screen-space occlusion relies on information strictly within the z-buffer, and then look at performance cost of HBAO in BF1.
We'd also recommend our previous graphics technology deep-dive, for folks who want a more technical explanation of what's going on for various AO technologies. Portions of this new article exist in the deep-dive.
AMD sent us an email today that indicated a price reduction for the new-ish RX 460 2GB card and RX 470 4GB card, which we've reviewed here (RX 460) and here (RX 470). The company's price reduction comes in the face of the GTX 1050 and GTX 1050 Ti release, scheduled for October 25 for the 1050 Ti, and 2-3 weeks later for the GTX 1050. Our reviews will be live next week.
Battlefield 1 marks the arrival of another title with DirectX 12 support – sort of. The game still supports DirectX 11, and thus Windows 7 and 8, but makes efforts to shift Dice and EA toward the new world of low-level APIs. This move comes at a bit of a cost, though; our testing of Battlefield 1 has uncovered some frametime variance issues on both nVidia and AMD devices, resolvable by reverting to DirectX 11. We'll explore that in this content.
In today's Battlefield 1 benchmark, we're strictly looking at GPU performance using DirectX 12 and DirectX 11, including the recent RX 400 series, GTX 10 series, GTX 9 series, and RX 300 series GPUs. Video cards tested include the RX 480, RX 470, RX 460, 390X, and Fury X from AMD and the GTX 1080, 1070, 1060, 970, and 960 from nVidia. We've got a couple others in there, too. We may separately look at CPU performance, but not today.
This BF1 benchmark bears with it extensive testing methodology, as always, and that's been fully detailed within the methodology section below. Please be sure that you check this section for any questions as to drivers, test tools, measurement methodology, or GPU choices. Note also that, as with all Origin titles, we were limited to five device changes per game code per day (24 hours). We've got three codes, so that allowed us up to 15 total device tests within our test period.