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The Nvidia GeForce RTX 3090 is now confirmed as the next halo graphics card from Team Green, and Jensen has spilled the beans (most of them, anyway) on specs and performance. If you want the best performance from Nvidia's Ampere architecture, get ready to take out a small loan, because the king of the GPU hierarchy and the best graphics card ('best' as in 'fastest') won't come cheap. The RTX 3090 sets a new high-bar for single-GPU pricing at $1,499, not counting Nvidia's Titan series that it's apparently meant to replace. Here's everything we know about the GeForce RTX 3090.
We've covered the high-level view of Nvidia's new Ampere GPUs elsewhere, and you can read about the GeForce RTX 3080 and GeForce RTX 3070 in their own dedicated articles. The focus here is on the RTX 3090. After months of speculation and waiting, we finally have the hard details. It's big, quite literally. Nvidia's RTX 3090 reference model (we're not sure if Nvidia is still using Founders Edition branding) sports a triple-slot cooler and has a 350W TDP. You might need a PSU, case, and CPU upgrade to make the most of this bad boy.
The GeForce RTX 3090 is the first 90-series suffix we've seen from Nvidia since the GTX 690 back in 2012. That was a dual-GPU variant of the GTX 680, back when multi-GPU was a thing. Which, technically it still is, but support has been seriously lacking of late. Regardless, the RTX 3090 is the only Ampere GeForce GPU that has NVLink support this round, just in case you have $3,000 sitting around. (Don't do it!) But let's hit the specs.
Nvidia GeForce RTX 3090 At A Glance:
- 24GB GDDR6X at 19.5Gbps
- 10496 CUDA cores and 35.7 TFLOPS of FP32 compute
- Samsung 8N manufacturing process
- 1.9 times more efficient than Turing
- Release Date: September 24, 2020
- Price: $1,499
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Nvidia GeForce RTX 3090 Specifications
Holy TFLOPS, Batman! No, seriously: Wow! We heard various rumors. We heard Nvidia might double the number of shader cores per SM. What we didn't expect was double the FP32 shaders while still packing 82 SMs. And Nvidia could have theoretically gone even bigger (the GA100 is an 826mm square chip, where GA102 is apparently only around 627mm square). Still, the resulting 36 TFLOPS of compute is going to be a massive boost to performance ... provided the rest of your PC can keep up.
Raw compute power is 150% more than the RTX 2080 Ti, for both the CUDA cores and the Tensor cores. As in, on paper the RTX 3090 is 2.5 times as fast as the previous king. Actually, maybe that's not fair — it should be compared with the Titan RTX, right? Then it's only 2.2 times as fast, plus it costs $1,000 less.
I'm a bit sad that the GDDR6X memory 'only' clocks in at 19.5Gbps, and I'm in need of a GPU hat to eat (chocolate, please!), but we're still looking at 24GB of memory and 936 GBps of bandwidth. That's a 52% increase relative to the RTX 2080 Ti, and Nvidia likely has some architectural improvements to that it makes better effective use of that bandwidth.
Finally, ray tracing performance is 69 TFLOPS of RT computation. Nvidia rated the previous Turing GPUs in gigarays per second, but that was misleading, so we're now getting RT-TFLOPS. The RTX 2080 Ti incidentally had 34 TFLOPS of RT prowess. Again, Nvidia is looking at more than double the computational power on all the core metrics, and a bit more than 50% more memory bandwidth.
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Meet the Nvidia GeForce RTX 3090
The GeForce RTX 3090 isn't just the most expensive GeForce card to date; it's the largest graphics card Nvidia has sold. We've seen various third party designs push the limits of good sense (in a good way, provided you have a large PC), but Nvidia has previously limited its designs to 2-slot solutions. No more! The RTX 3090 is a triple-slot card, measuring 12.3-inches in length and 5.4-inches in height.
It's a monster! And I love it. Be still, my heart! Forgive techno-lust, but this is definitely an exciting GPU. Soon, it will be here. My precious... Ahem.
As listed above, the RTX 3090 also sports a 350W TDP (or TGP if you prefer, which is power to the entire GPU, not counting any extra power used by things like VirtualLink). To help cope with the added thermal output, Nvidia has significantly altered the cooling design compared to previous generation GPUs.
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The above image is from Nvidia's RTX 3080, but the GeForce RTX 3090 is the same fundamental design — only bigger. We're not positive, but it looks like the 3090 will have a bigger fan (120mm?) to go along with the wider heatsink. The size of the PCB meanwhile is smaller than the previous generation cards, so the extra size really is all about cooling.
It's not too surprising to see Nvidia take this approach. Even though the Turing architecture was very efficient overall, it still ran into power and thermal limits on the fastest models (RTX 2080 Super and above). The only way around that is to increase the TDP, and that meant improving the cooling capabilities as the top RTX 20-series Founders Edition graphics cards could get quite hot.
Part of the redesign also involved moving from dual 8-pin power connectors to a single 12-pin connector, at least for Nvidia's reference design. Third party cards appear to be sticking with dual 8-pin connectors for the most part, and the 12-pin cable doesn't necessarily deliver more power. It's just a more compact connector, rotated 90 degrees to free up even more board space.
How will the new design fare against third party cards? We're certainly interested to find out. Will it be quieter, or lower temperatures, or both? Check back in a few weeks and we'll have the details.
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Nvidia GeForce RTX 3090 Features
Nvidia's GeForce RTX 3090 will make use of Micron's GDDR6X memory. This GPU and the RTX 3080 are the only ones slated to use GDDR6X for now, and Nvidia had to further improve the signal delivery to boost speeds.
HDMI 2.1 makes its debut in a graphics card, but the three DisplayPort connectors remain stuck at 1.4a. Both standards can drive an 8K display, but where HDMI 2.1 can do 8K120 via DSC, DisplayPort 1.4a requires DSC just to get to 8K60.
Nvidia has also added PCIe Gen4 support to its Ampere GPU. It's worth pointing out that this probably won't matter much for gaming performance, as the large 24GB of VRAM means there should be less data going back and forth over the PCIe bus. The other problem of course is that the fastest gaming CPUs still come from Intel, and Intel doesn't have a desktop PCIe Gen4 solution yet. That will come with next year's Rocket Lake processors, which will yet again use Intel's 14nm++(++) process.
Does that mean AMD's X570 platform with a Ryzen 9 3900X is the better choice, since you get Gen4 support? Almost certainly not. We recently ran a full suite of benchmarks on ten GPUs and compared the performance of the Core i9-9900K vs. Ryzen 9 3900X. There were a few edge cases where the 3900X came out ahead, but it was more like a tie. For the RX 5700 XT at least, having a faster PCIe interface didn't appear to matter. Hopefully Zen 3 can further close the CPU gap, but that's a topic for another day.
Other new features likely exist that we've missed, and we're still digesting the large data dump. We'll update this section over the coming days as needed.