The Galax GeForce RTX 3080 Ti SG — the SG is for "Serious Gamer," if you're wondering — looks to compete with the best graphics cards by offering a unique extra: a fourth clip-on fan to boost cooling performance. That's double the fans of Nvidia's reference GeForce RTX 3080 Ti Founders Edition, if you're keeping track. The 3080 Ti currently ranks as the second fastest GPU overall in our GPU benchmarks hierarchy, just a couple percent behind the RTX 3090, and less than one percent ahead of AMD's competing RX 6900 XT — though those results don't include ray tracing, DLSS, or FSR performance comparisons. How does Galax fare against the competition, and more importantly, will you be able to find one in stock anywhere? The answer to the latter, unfortunately, is generally no, though readers over in Europe might have better luck.
Galax products are also sold under the KFA2 brand overseas, but other than slight differences in the box art, the cards are the same. The parent company for both brands is Palit, which by volume is one of the largest graphics card companies in the world. Despite the name, the Serious Gamer edition is basically equivalent to Nvidia's reference model. Out of the box, it sports a boost clock of 1695MHz, just 30MHz higher than the Founders Edition. If you install Galax's Xtreme Tuner Plus Software and use the 1-Click OC option, you'll get a mostly meaningless bump to a 1710MHz boost clock — that's less than a 1% difference. Still, we've used the factory overclock for testing, and we'll use that for the specs table below.
| Header Cell - Column 0 | Galax RTX 3080 Ti SG | RTX 3080 Ti Founders Edition | Zotac RTX 3080 Ti Holo Black |
|---|---|---|---|
| Architecture | GA102 | GA102 | GA102 |
| Process Technology | Samsung 8N | Samsung 8N | Samsung 8N |
| Transistors (Billion) | 28.3 | 28.3 | 28.3 |
| Die size (mm^2) | 628.4 | 628.4 | 628.4 |
| SMs / CUs | 80 | 80 | 80 |
| GPU Cores | 10240 | 10240 | 10240 |
| Tensor Cores | 320 | 320 | 320 |
| RT Cores | 80 | 80 | 80 |
| Boost Clock (MHz) | 1710 | 1665 | 1710 |
| VRAM Speed (Gbps) | 19 | 19 | 19 |
| VRAM (GB) | 12 | 12 | 12 |
| VRAM Bus Width | 384 | 384 | 384 |
| ROPs | 112 | 112 | 112 |
| TMUs | 320 | 320 | 320 |
| TFLOPS FP32 (Boost) | 35 | 34.1 | 35 |
| TFLOPS FP16 (Tensor) | 140 (280) | 136 (273) | 140 (280) |
| Bandwidth (GBps) | 912 | 912 | 912 |
| TDP (watts) | 350 | 350 | 350 |
| Official Price | $1,499 | $1,199 | $1,799 |
We've now tested three different RTX 3080 Ti cards, with the two custom cards having identical specs. But specs don't tell the whole store, as card design and cooling can also factor into the equation. The Zotac Amp Holo is the largest of the three cards, at least by certain metrics. It measures 317.8mm x 131.8mm x 64.6mm and weighs just over 1500g. The Galax SG card measures 317mm x 113mm x 61mm by comparison, so it's a bit longer but not as tall or as thick.
However, the Galax card also includes a support bracket that adds 12mm to the length and 17mm to the height of the card, and then there's the extra clip-on fan. That's 25mm thick, though it's only at the end of the card and sits on the back. The Galax RTX 3080 Ti SG weighs 1424g, including the extra fan but not the support bracket. In other words, it's a rather large card and definitely not something you'd want to try to cram into a smaller case.
As far as clock speeds go, even compared to the reference 1665MHz, the theoretical difference in performance is only 2.7%. In practice, all of the Nvidia Ampere GPUs we've tested tend to run well above the official boost clocks, and it's not uncommon to see cards with lower official boost clocks actually run at higher speeds in practice. As with the Zotac 3080 Ti, most differences between the GPUs can be chalked up to margin of error in testing, or differences between driver revisions and/or game patches.
The biggest problems with all of the RTX 3080 Ti cards are price and availability. Given current demand, one could argue that the RTX 3080 official launch price of $699 was simply far too low. That's mostly because cryptocurrency mining profitability basically quadrupled after the GPU launched, which meant every miner and their dog wanted to buy as many 3080 cards as possible. But absent cryptomining (see best mining GPUs) and component shortages, $699 was still the right price. Asking $1,199 for the RTX 3080 Ti for an extra 5–10% performance was too much, and third-party cards are taking things even further. Galax informed us there's a lot of variability in pricing right now, but that it expects the retail price for the RTX 3080 Ti SG to be around $1,500 — or £1,150 or €1,350. That's too high in our book, but unfortunately there are apparently plenty of people willing to pay such prices still, as the GPU price index indicates.
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