GALAX and KFA2 have added single-slot GeForce GTX 1070 Katana video cards to their lineups, which is usually an indicator that the graphics adapters are going to hit the market shortly. The add-in-boards (AIBs) will be the only thin GTX 1070 high-end graphics cards on the market and will join a few other single-slot adapters in GALAX's lineup.

As discussed before, when GALAX first demonstrated a prototype of its single-slot GeForce GTX 1070 Katana graphics card, single-slot gaming AIBs are uncommon these days because GPU developers and hardware makers use dual-slot coolers for everything with a TDP of 75 W and higher. While most of gaming desktops can accommodate at least one double-wide graphics adapter, there are systems equipped with extra add-in-boards (audio, SSD, additional SATA or Thunderbolt 3 controllers, etc.) that may require slim single-slot components as there is simply not enough space inside. For this reason, single-slot graphics cards from ELSA and now GALAX and KFA2 will find their buyers.

The GeForce GTX 1070 Katana graphics cards from GALAX and KFA2 are produced by Palit Microsystems, the owner of the two brands. To make the boards thinner than their counterparts, the manufacturer had to develop a custom PCB design with a 4+1-phase VRM moved towards display outputs. Such design ensures that cool air takes heat away from the GPU first and only then the air is applied to inductors, MOSFETs and capacitors of the VRM (which are sturdier). The GeForce GTX 1070 Katana graphics adapters run their GPUs at 1518/1708 MHz (base/boost), which is very close to NVIDIA-recommended frequencies and thus the cards only require one 8-pin PCIe auxiliary power connector.

Another key element of the adapters is their single-slot cooling system that relies on a copper radiator with a vapor chamber and a high-pressure blower. The lid of the radiator has special openings above the VRM that exhausts part of the hot air and helps to better cool-down inductors and MOSFETs. In addition, there are exhaust holes on the bracket, therefore, at least part of the hot air is blown away outside of the PC. Palit does not disclose the maximum noise level produced by its cooling system, but it is logical to expect it to be noisier than their large brethren with multiple fans and doublewide radiators.

Since the GeForce GTX 1070 Katana cards are thin, the manufacturer had to sacrifice two out of five display connectors offered by most of the GP104-based designs. The graphics adapters feature a DisplayPort 1.4, a DVI-D output and an HDMI 2.0b connector. On the other hand, as most gamers use only one monitor, three different headers will be enough for vast majority of the target audience.

GALAX and KFA2 have not announced MSRPs of their GeForce GTX 1070 Katana graphics cards for their respective regions. Since the boards are unique, it is likely that they will be sold at a premium. Typically these cards are difficult to source outside of China or Japan, so it is worth letting these companies know if you want them in other regions.

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Sources: GALAX, KFA2

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  • bill.rookard - Thursday, April 13, 2017 - link

    Oh, the folding rig I could make with these.... there's a reason I have a quad-sli motherboard, and these are it.
  • ImSpartacus - Thursday, April 13, 2017 - link

    Wouldn't dual 1080 Tis provide nearly the same performance (especially if overclocked)?

    I'm assuming you're not cost limited or else you wouldn't have a quad sli board.
  • Samus - Thursday, April 13, 2017 - link

    Dual 1080 Ti's take up twice the space.

    For occupying only one slot each, two of these cards would offer more power than any double-slot card available.
  • ImSpartacus - Friday, April 14, 2017 - link

    You'd be comfortable cramming two of these guys next to each other?

    I don't think that's a good idea. Look at the illustration in this article. There's a gap.

    Furthermore, I think one aggressively overclocked 1080 Ti (or hell, Titan Xp) could easily approach the performance of two undercooled 1070s.

    A 1080 Ti is already 50-60% faster than
    one 1070. So with ~90% sli scaling on the 1070 pair, the 1080 Ti is within spitting distance at only ~10% overclock.

    But if you REALLY need performance density, just wait six months for Vega 10X2. That oughta win the performance density competition easily.
  • bill.rookard - Saturday, April 22, 2017 - link

    Well the board is an older one - P7F7E-WS that I got with the CPU (Xeon X3470) for an unbelievable price ($200 for both CPU and motherboard) in perfect shape. If I opened up the back of the single slots I could actually fit seven of these on there. Assuming the CPU could keep it fed, the 1070 can do on average 700k ppd, the 1080 does about 800k ppd, the 1080ti would be good for maybe 1000k ppd. However, I could only fit four 1080ti's (double slots) equalling about 4m ppd.

    Meanwhile, seven 1070s would be good for 4.9m ppd.

    Haha - wow that would be ridiculous.
  • johncena - Friday, May 5, 2017 - link

    registered12345 hello this is good reply
  • Charlie22911 - Thursday, April 13, 2017 - link

    But why DVI? DisplayPort adapters are comparatively cheap, so why not keep the DisplayPort connectors?
    I am pleased to see that someone is acknowledging the demand for single slot cards, even if it is a small audience...
  • ImSpartacus - Thursday, April 13, 2017 - link

    Yeah, I'm normally pro-dvi, but for this slim use case, I feel like several displayport (or even mini dp) and a single hdmi would've been ideal.
  • mjeffer - Thursday, April 13, 2017 - link

    I was thinking the same thing. Not only that, you could fit four outputs on there without DVI.
  • peterfares - Thursday, April 13, 2017 - link

    Yeah 4 mini DP connectors would probably be the best port configuration but having a Dual-Link DVI is potentially a selling point for some with older high-resolution monitors. I bet they could fit a DVI and 3 mini DP ports though.

    DisplayPort to dual-link DVI adapters aren't cheap, they're around $100.

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