A brand-new generation of Nvidia GeForce graphics cards has actually lastly gotten here. The brand-new Ampere line consists of 3 validated cards and ought to ultimately swell to a lineup of a minimum of a half-dozen, if previous series are anything to pass, however in the here and now we have simply one: the RTX 3080. Thankfully, it’s a cracker – we currently shared some initial information that exposed outstanding increases to 4K efficiency over the outbound RTX 2080 – however that was with Nvidia selecting the video games and resolution. Now, the gloves are off and we can share a more total photo of RTX 3080 efficiency, all the method from 1080p and 1440p to 4K in a much broader variety of titles.
Before we enter the criteria, it deserves covering the makeup of this brand-new Ampere card. Nvidia has actually declared that it’ll provide two times the ray tracing efficiency and the greatest generational leap ever, which’s mostly down to the die avoid a 12nm procedure to an 8nm procedure, provided thanks to Samsung instead of normal fab, TSMC. That enables Nvidia to cram in a lot more transistors than ever in the past, enhancing efficiency and power performance. The card’s memory has actually likewise been updated, with 10GB of GDDR6X memory that’s more power-efficient than its GDDR6 predecessor to permit greater frequencies and more bandwidth. Nvidia is likewise dealing with next-generation variations of its ray tracing and tensor cores, all the much better for enhancing in a location that plainly requires additional grunt. In short, basically whatever here has actually been pressed to the limitations for optimum efficiency, with Nvidia in most cases actually doubling down on the hardware accountable for RTX and AI-accelerated work.
While there’s plenty taking place under the hood, among the very first things you’ll see about the RTX 3080 is its uncommon thermal option. We still have a set of fans, as we saw on 20-series cards, however they’re now in a push-pull setup with one fan on each side – something Nvidia calls ‘flow-through’. This ought to enhance temperature levels at a provided fan speed, however it may likewise press hot air onto the CPU more than you’d anticipate from a conventional style – something to remember if you’re utilizing an air cooler instead of an AiO or customized water cooling. In our screening, the RTX 3080’s Founders Edition cooler carried out well, provided the level of power and efficiency on display screen. It’ll be fascinating to see whether it represents a considerable benefit over customized cards once the embargo for these evaluations has actually raised.
|RTX 3080||RTX 2080 Ti||RTX 2080||GTX 1080 Ti||GTX 1080|
|VRAM||10GB GDDR6X||11GB GDDR6||8GB GDDR6||11GB GDDR5X||8GB GDDR5X|
The PCB has actually also shrunk substantially, with the entire back half of the card devoted to fins and heat pipes. That means there’s actually no place to stick a power input where you’d normally expect to find it, at the back end of the card. Instead, Nvidia has slotted it into the middle of the unit, at the furthest reaches of the PCB. There’s not quite enough room here for the normal pair of eight-pin connectors you’d expect, so instead the firm has implemented a more compact 12-pin port. As well as being physically smaller, this connector is also capable of delivering much more power – which is key for this card, as we’ll see later. While some power supply manufacturers have already released customized 12-pin cables for their higher-end modular PSUs, don’t worry about that right away: you’ll get a dual eight-pin to 12-pin adapter in the box that will do the job.
The bottom of the card is home to the PCIe connector, as usual, but this is Nvidia’s first card to support the new PCIe 4.0 standard. That should allow for slightly less restricted performance in some scenarios, and indeed we saw slightly higher frame-rates in Horizon Zero Dawn at 4K (around +4fps) when moving from PCIe 3.0 to 4.0 – that’s with a Ryzen 9 3950X processor on an X570 motherboard. However, we got fractionally higher frame-rates at 4K running the 3080 on our Core i9 10900K test bench, which is limited to PCIe 3.0, and consistently faster performance at 1080p and 1440p. Therefore, we’re sticking with PCIe 3.0 – at least for our initial testing.
The port selection here has actually likewise changed slightly, with the rather useful USB-C VirtualLink port excised in the face of minimal industry uptake. That leaves three DisplayPort 1.4a ports and one HDMI 2.1 port. The RTX 3080 is really the first graphics card to support the HDMI 2.1 standard, which has a mighty 48Gbps of bandwidth – enough for connecting to a 8K 60Hz or 4K 120Hz screens (like our favourite 4K TVs for HDR gaming) using a single cable – without the need for lossy chroma subsampling.
This syncs nicely with the new support for AV1 decoding, a new video standard that is up to 50 per cent more efficient than the prevalent h.264 codec. That should cut the amount of bandwidth required to stream high resolution and/or high frame-rate video significantly, and allows up to 8K 60fps video content to be delivered. Chrome, Twitch and VLC are all confirmed to support AV1 decoding with the RTX 3080 in the near future.
One of the most fascinating parts of Nvidia’s initial Ampere reveal centred around the extraordinary power efficiency the cards are capable of. Nvidia claimed up to 1.9 times the performance per watt with Ampere compared to Turing, which was itself a capable performer in this regard. However, as you might have guessed from the upgunned thermal solution and the new high-capacity 12-pin power input, Nvidia has opted to raise power limits significantly to drive as much performance as possible out of the new cards. The RTX 3080 has a 320 watt power rating, compared to 225 watts for the RTX 2080; the recommended PSU size has also shifted from 650W to 750W.
To see how the RTX 3080’s power usage and efficiency compares to other graphics cards, we measured their power draw and frame-rates in Doom Eternal, Death Stranding and Gears 5 at maximum settings. This was done using Nvidia’s new power capture analysis tool (PCAT). The PCAT board interposes between the graphics card and its power sources (eg the PCIe slot and the GPU’s eight-pin or 12-pin power inputs), measuring the wattage before passing it through to the card.
While we didn’t see the near-doubling that Nvidia suggested, their claim that Ampere outperforms Turing watt-for-watt has been validated. Starting with Doom Eternal, you can see that the RTX 2080 Ti pulls 5.4 per cent more watts to draw each frame, on average, through the course of the bench. The RTX 2080 is even less efficient, pulling nearly 20 per cent more watts than the 3080. AMD’s RX 5700 XT exists in a similar ballpark, requiring around 28 per cent more watts per frame than the new Nvidia card. Perhaps unsurprisingly, the GTX 1080 struggles the most, pulling more than 50 per cent more watts per frame than the 3080.
It’s a similar story in Death Stranding and Gears 5, where the percentages shift somewhat but the RTX 3080 Founders Edition remains the overall efficiency champion, followed closely by the RTX 2080 Ti. The RTX 2080 and RX 5700 XT trade places in the Death Stranding benchmark but remain the two “middle-ground” performers, while the GTX 1080 finishes in last each time.
|Watts Per Frame||RTX 3080 FE||RTX 2080 Ti FE||RTX 2080 FE||GTX 1080 FE||RX 5700XT|
|Watts Per Frame||RTX 3080 FE||RTX 2080 Ti FE||RTX 2080 FE||RTX 1080 FE||RX 5700XT|
|Watts Per Frame||RTX 3080 FE||RTX 2080 Ti FE||RTX 2080 FE||GTX 1080 FE||RX 5700XT|
If you’re wondering where the 1.9x performance per watt comes from, that’s at the lower end of the power curve and we should anticipate to see more impressive gains on the RTX 3070, which Nvidia claims to be more powerful than RTX 2080 Ti – and with a lower TDP. For the RTX 3080 and especially the upcoming RTX 3090, Nvidia uses the 8nm process to seemingly blast the silicon with power, pushing out a lot more performance – but at the expense of efficiency.
So here’s the plan with our review. With a new generation of both GeForce and Radeon cards expected to launch over the next few months, we’ve opted to update our standardised GPU test bench for the first time in several years. Our trusty Intel Core i7 8700K and Asus Maximus 11 Extreme Z390 motherboard is out, and the new Core i9 10900K on a Asus Maximus 12 Extreme Z490 motherboard is in. Our memory has actually increased in frequency slightly, with the new rig using two 8GB sticks of G.Skill Trident Z Royal running at 3600MHz CL16. These boosts should mean that games are marginally less CPU-bottlenecked, so differences between graphics cards will be more obvious. We’ve likewise upgraded our storage, as our newly expanded testing library now exceeds 1TB, so we’ve opted for a 2TB Samsung 970 Evo Plus NVMe drive provided by Box.
Now that we have actually the housekeeping out of the way, let’s take a look at how this card performs in some video games.
Nvidia GeForce RTX 3080 Analysis
- Introduction, Hardware, Power [This Page]
- Doom Eternal, Control, Borderlands 3, Shadow of the Tomb Raider – Game Benchmarks Part 1
- Gears 5, Far Cry 5, Hitman 2 – Game Benchmarks Part 2
- Metro Exodus, Dirt Rally 2, Assassin’s Creed Unity – Game Benchmarks Part 3
- Death Stranding, Ghost Recon Wildlands, Assassin’s Creed Odyssey – Game Benchmarks Part 4
- Control, Metro Exodus, Battlefield 5, Quake 2 RTX – RTX Game Benchmarks
- Nvidia GeForce RTX 3080 – The Digital Foundry Verdict