Meet The GeForce GTX 670

Because of the relatively low power consumption of GK104 relative to past high-end NVIDIA GPUs, NVIDIA has developed a penchant for small cards. While the GTX 680 was a rather standard 10” long, NVIDIA also managed to cram the GTX 690 into the same amount of space. Meanwhile the GTX 670 takes this to a whole new level.

We’ll start at the back as this is really where NVIDIA’s fascination with small size makes itself apparent. The complete card is 9.5” long, however the actual PCB is far shorter at only 6.75” long, 3.25” shorter than the GTX 680’s PCB. In fact it would be fair to say that rather than strapping a cooler onto a card, NVIDIA strapped a card onto a cooler. NVIDIA has certainly done short PCBs before – such as with one of the latest GTX 560 Ti designs – but never on a GTX x70 part before. But given the similarities between GK104 and GF114, this isn’t wholly surprising, if not to be expected.

In any case this odd pairing of a small PCB with a large cooler is no accident. With a TDP of only 170W NVIDIA doesn’t necessarily need a huge PCB, but because they wanted a blower for a cooler they needed a large cooler. The positioning of the GPU and various electronic components meant that the only place to put a blower fan was off of the PCB entirely, as the GK104 GPU is already fairly close to the rear of the card. Meanwhile the choice of a blower seems largely driven by the fact that this is an x70 card – NVIDIA did an excellent job with the GTX 560 Ti’s open air cooler, which was designed for the same 170W TDP, so the choice is effectively arbitrary from a technical standpoint (there’s no reason to believe $400 customers are any less likely to have a well-ventilated case than $250 buyers). Accordingly, it will be NVIDIA’s partners that will be stepping in with open air coolers of their own designs.

Starting as always at the top, as we previously mentioned the reference GTX 670 is outfitted with a 9.5” long fully shrouded blower. NVIDIA tells us that the GTX 670 uses the same fan as the GTX 680, and while they’re nearly identical in design, based on our noise tests they’re likely not identical. On that note unlike the GTX 680 the fan is no longer placed high to line up with the exhaust vent, so the GTX 670 is a bit more symmetrical in design than the GTX 680 was.


Note: We dissaembled the virtually identical EVGA card here instead

Lifting the cooler we can see that NVIDIA has gone with a fairly simple design here. The fan vents into a block-style aluminum heatsink with a copper baseplate, providing cooling for the GPU. Elsewhere we’ll see a moderately sized aluminum heatsink clamped down on top of the VRMs towards the front of the card. There is no cooling provided for the GDDR5 RAM.


Note: We dissaembled the virtually identical EVGA card here instead

As for the PCB, as we mentioned previously due to the lower TDP of the GTX 670 NVIDIA has been able to save some space. The VRM circuitry has been moved to the front of the card, leaving the GPU and the RAM towards the rear and allowing NVIDIA to simply omit a fair bit of PCB space. Of course with such small VRM circuitry the reference GTX 670 isn’t built for heavy overclocking – like the other GTX 600 cards NVIDIA isn’t even allowing overvolting on reference GTX 670 PCBs – so it will be up to partners with custom PCBs to enable that kind of functionality. Curiously only 4 of the 8 Hynix R0C GDDR5 RAM chips are on the front side of the PCB; the other 4 are on the rear. We typically only see rear-mounted RAM in cards with 16/24 chips, as 8/12 will easily fit on the same side.

Elsewhere at the top of the card we’ll find the PCIe power sockets and SLI connectors. Since NVIDIA isn’t scrambling to save space like they were with the GTX 680, the GTX 670’s PCIe power sockets are laid out in a traditional side-by-side manner. As for the SLI connectors, since this is a high-end GeForce card NVIDIA provides 2 connectors, allowing for the card to be used in 3-way SLI.

Finally at the front of the card NVIDIA is using the same I/O port configuration and bracket that we first saw with the GTX 680. This means 1 DL-DVI-D port, 1 DL-DVI-I port, 1 full size HDMI 1.4 port, and 1 full size DisplayPort 1.2. This also means the GTX 670 follows the same rules as the GTX 680 when it comes to being able to idle with multiple monitors.

NVIDIA GeForce GTX 670 Meet The EVGA GeForce GTX 670 Superclocked
POST A COMMENT

414 Comments

View All Comments

  • Blackchild1101 - Thursday, May 10, 2012 - link

    I'll take two please! Reply
  • Ryan Smith - Thursday, May 10, 2012 - link

    You'll get nothing and like it!

    (Sorry, was watching Caddyshack last weekend)
    Reply
  • Wreckage - Thursday, May 10, 2012 - link

    To think a few months ago you could have gotten a pair of 7970s for $1100.

    I'm betting there are a lot of sad AMD fans out there. Their viral marketing group in the forums is going to have a rough year for sure.
    Reply
  • retrospooty - Thursday, May 10, 2012 - link

    I doubt anyone that places happiness in their preferred companies products being #1 is all too happy to begin with ;) Reply
  • RampantAndroid - Tuesday, May 15, 2012 - link

    Sure, but realizing that waiting a few months could have saved them serious $$$.

    Same probably goes for GTX680 owners.
    Reply
  • CeriseCogburn - Monday, May 28, 2012 - link

    The partners of nVidia are going to be happy, because what comes out of the 680 and 670 is an auto overclock and an overclockable card, with locks on power increases, and therefore far, far less chance of anything burning out.

    Overclock to your hearts desire - you won't be burning these up while the amd cards will still be a housefire and cost the partners plenty to replace.

    nVidia's partners are very, very happy.
    Reply
  • JlHADJOE - Saturday, July 21, 2012 - link

    They would if they have stocks invested though.

    /putting money where fanboy mouth is
    Reply
  • Lazlo Panaflex - Thursday, May 10, 2012 - link

    Waaaaaah waaaaah I can't post in the forums waaaaaaaah waaaaaaaaah

    btw, your mom says 'hi' & said to get back in the basement
    Reply
  • wut - Thursday, May 10, 2012 - link

    Oh no, YOUR MOM. Reply
  • Lazlo Panaflex - Thursday, May 10, 2012 - link

    bwahahahahahahahaha :D Reply

Log in

Don't have an account? Sign up now