In a typical high-end GPU launch we’ll see the process take place in phases over a couple of months if not longer. The new GPU will be launched in the form of one or two single-GPU cards, with additional cards coming to market in the following months and culminating in the launch of a dual-GPU behemoth. This is the typical process as it allows manufacturers and board partners time to increase production, stockpile chips, and work on custom designs.

But this year things aren’t so typical. GK104 wasn’t the typical high-end GPU from NVIDIA, and neither it seems is there anything typical about its launch.

NVIDIA has not been wasting any time in getting their complete GK104 based product lineup out the door. Just 6 weeks after the launch of the GeForce GTX 680, NVIDIA launched the GeForce GTX 690, their dual-GK104 monster. Now only a week after that NVIDIA is at it again, launching the GK104 based GeForce GTX 670 this morning.

Like its predecessors, GTX 670 will fill in the obligatory role as a cheaper, slower, and less power-hungry version of NVIDIA’s leading video card. This is a process that allows NVIDIA to not only put otherwise underperforming GPUs to use, but to satisfy buyers at lower price points at the same time. Throughout this entire process the trick to successfully launching any second-tier card is to try to balance performance, prices, and yields, and as we’ll see NVIDIA has managed to turn all of the knobs just right to launch a very strong product.

  GTX 680 GTX 670 GTX 580 GTX 570
Stream Processors 1536 1344 512 480
Texture Units 128 112 64 60
ROPs 32 32 48 40
Core Clock 1006MHz 915MHz 772MHz 732MHz
Shader Clock N/A N/A 1544MHz 1464MHz
Boost Clock 1058MHz 980MHz N/A N/A
Memory Clock 6.008GHz GDDR5 6.008GHz GDDR5 4.008GHz GDDR5 3.8GHz GDDR5
Memory Bus Width 256-bit 256-bit 384-bit 320-bit
VRAM 2GB 2GB 1.5GB 1.25GB
FP64 1/24 FP32 1/24 FP32 1/8 FP32 1/8 FP32
TDP 195W 170W 244W 219W
Transistor Count 3.5B 3.5B 3B 3B
Manufacturing Process TSMC 28nm TSMC 28nm TSMC 40nm TSMC 40nm
Launch Price $499 $399 $499 $349

Like GeForce GTX 680, GeForce GTX 670 is based on NVIDIA’s GK104 GPU. So we’re looking at the same Kepler design and the same Kepler features, just at a lower level of performance. As always the difference is that since this is a second-tier card, NVIDIA is achieving that by harvesting otherwise defective GPUs.

In a very unusual move for NVIDIA, for GTX 670 they’re disabling one of the eight SMXes on GK104 and lowering the core clock a bit, and that’s it. GTX 670 will ship with 7 active SMXes, all 32 of GK104’s ROPs, and all 4 GDDR5 memory controllers. Typically we’d see NVIDIA hit every aspect of the GPU at once in order to create a larger performance gap and to maximize the number of GPUs they can harvest – such as with the GTX 570 and its 15 SMs & 40 ROPs – but not in this case.

Meanwhile clockspeeds turn out to be equally interesting. Officially, both the base clock and the boost clock are a fair bit lower than GTX 680. GTX 670 will ship at 915MHz for the base clock and 980MHz for the boost clock, which is 91MHz (9%) and 78MHz (7%) lower than the GTX 680 respectively. However as we’ve seen with GTX 680 GK104 will spend most of its time boosting and not necessarily just at the official boost clock. Taken altogether, depending on the game and the specific GPU GTX 670 has the capability to boost within 40MHz or so of GTX 680, or about 3.5% of the clockspeed of its more powerful sibling.

As for the memory subsystem, like the ROPs they have not been touched at all. GTX 670 will ship at the same 6.008GHz memory clockspeed of GTX 680 with the same 256-bit memory bus, giving it the same 192GB/sec of memory bandwidth. This is particularly interesting as NVIDIA has always turned down their memory clocks in the past, and typically taken out a memory controller/ROP combination in the past. Given that GK104 is an xx4 GPU rather than a full successor to GF110 and its 48 ROPs, it would seem that NVIDIA is concerned about their ROP and memory performance and will not sacrifice performance there for GTX 670.

Taken altogether, this means at base clocks GTX 670 has 100% of the memory bandwidth, 91% of the ROP performance, and 80% of the shader performance of GTX 680. This puts GTX 670’s specs notably closer to GTX 680 than GTX 570 was to GTX 580, or GTX 470 before it. In order words the GTX 670 won’t trail the GTX 680 by as much as the GTX 570 trailed the GTX 580 – or conversely the GTX 680 won’t have quite the same lead as the GTX 580 did.

As for power consumption, the gap between the two is going to be about the same as we saw between the GTX 580 and GTX 570. The official TDP of the GT 670 is 170W, 25W lower than the GTX 680. Unofficially, NVIDIA’s GPU Boost power target for GTX 670 is 141W, 29W lower than the GTX 680. Thus like the GTX 680 the GTX 670 has the lowest TDP for a part of its class that we’ve seen out of NVIDIA in quite some time.

Moving on, unlike the GTX 680 launch NVIDIA is letting their partners customize right off the bat. GTX 670 will launch with a mix of reference, semi-custom, and fully custom designs with a range of coolers, clockspeeds, and prices. There are a number of cards to cover over the coming weeks, but today we’ll be looking at EVGA’s GeForce GTX 670 Superclocked alongside our reference GTX 670.

As we’ve typically seen in the past, custom cards tend to appear when GPU manufacturers and their board partners feel more comfortable about GPU availability and this launch is no different. The GTX 670 launch is being helped by the fact that NVIDIA has had an additional 7 weeks to collect suitable GPUs compared to the GTX 680 launch, on top of the fact that these are harvested GPUs. With that said NVIDIA is still in the same situation they were in last week with the launch of the GTX 690: they already can’t keep GK104 in stock.

Due to binning GTX 670 isn’t drawn from GTX 680 inventory, so it’s not a matter of these parts coming out of the same pool, but realistically we don’t expect NVIDIA to be able to keep GTX 670 in stock any better than they can GTX 680. The best case scenario is that GTX 680 supplies improve as some demand shifts down to the GTX 670. In other words Auto-Notify is going to continue to be the best way to get a GTX 600 series card.

Finally, let’s talk pricing. If you were expecting GTX 570 pricing for GTX 670 you’re going to come away disappointed. Because NVIDIA is designing GTX 670 to perform closer to GTX 680 than with past video cards they’re also setting the prices higher. GTX 670 will have an MSRP of $399 ($50 higher than GTX 570 at launch), with custom cards going for higher yet. This should dampen demand some, but we don’t expect it will be enough.

Given its $399 MSRP, the GTX 670 will primarily be competing with the $399 Radeon HD 7950. However from a performance perspective the $479 7970 will also be close competition depending on the game at hand. AMD’s Three For Free promo has finally gone live, so they’re countering NVIDIA in part based on the inclusion of Deus Ex, Nexuiz, and DiRT Showdown with most 7900 series cards.

Below that we have AMD’s Radeon HD 7870 at $350, while the GTX 570 will be NVIDIA’s next card down at around $299. The fact that NVIDIA is even bothering to mention the GTX 570 is an interesting move, since it means they expect it to remain as part of their product stack for some time yet.

Update 5/11: NVIDIA said GTX 670 supply would be better than GTX 680 and it looks like they were right. As of this writing Newegg still has 5 of 7 models still in stock, which is far better than the GTX 680 and GTX 690 launches. We're glad to see that NVIDIA is finally able to keep a GTX 600 series card in stock, particularly a higher volume part like GTX 670.

Spring 2012 GPU Pricing Comparison
AMD Price NVIDIA
  $999 GeForce GTX 690
  $499 GeForce GTX 680
Radeon HD 7970 $479  
Radeon HD 7950 $399 GeForce GTX 670
Radeon HD 7870 $349  
  $299 GeForce GTX 570
Radeon HD 7850 $249  
  $199 GeForce GTX 560 Ti
  $169 GeForce GTX 560
Radeon HD 7770 $139  

 

Meet The GeForce GTX 670
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  • Gastec - Tuesday, November 13, 2012 - link

    Your every comment is an attack at ATi/AMD video cards or people who seem to be using them( maybe). Why?
    You get payed to do negative publicity for AMD on the review sites? Because having a Ati card die on you in the middle of some important event in you gaming life( like raiding in WoW , am I close or am I close ;-) could not be the only reason.
    Reply
  • shin0bi272 - Friday, May 11, 2012 - link

    I think the reason for the missing memory chips is because they will be releasing the 685 in aug or sep which is supposed to be 4gb and run on a 512bit bus. It could be possible to increase the size of the gpu core and double the amount of ram and stil have it on a card this length.

    30% faster than the 670 (685 is supposed to be 25% faster than the 680 and the 670 is 5% slower than the 680) on the same size card but using 2x8 pin connectors instead of 2x6pin. Now imagine an after market or water cooler on it... yeah.

    You'll get great FPS on all those brand new console ports.
    Reply
  • KivBlue - Friday, May 11, 2012 - link

    $400 for a graphics card is just too much. Reply
  • medi01 - Saturday, May 12, 2012 - link

    For me too. In 200$-ish range it looks like AMD 7850 / 7870 are the only reasonable options.

    PS
    Honestly I don't get all the hype about 680/670. Cards are only marginally better than AMDs offering (losing in some games, winning in some games).

    Power consumption difference according to techpowerup is only 2 watt in idle, about 9 watt at full load. Not a big deal either.

    Basically a slight price drop by AMD on 7950/7970 (for whoever really wants those) once these cards actually become available and that's it.

    I also wonder, how many "enthusiasts" with multi-monitor setups in the need of a faster card are out there.

    PPS
    Worst part of it would be nVidia releasing confusing mix of completely different cards lower end cards released under the same name, to confuse consumer.
    Reply
  • CeriseCogburn - Saturday, May 12, 2012 - link

    I guess considering you think $200 equals $335 and that also equals $250, we can say your comment equals a big fat lie, and when a big fat lie is what one immediately starts off with, everyone knows something is WRONG. Reply
  • Gastec - Tuesday, November 13, 2012 - link

    Again you attack someone who posted a comment about AMD cards, just because. You are obviously a troll and someone from this, STILL RESPECTED computer magazine should ban you. Reply
  • Gastec - Tuesday, November 13, 2012 - link

    Yes but people who buy these have enough money to buy even the $3000-4000. Tesla K20 ones . Many of them have money from their parents, if you catch my drift. Reply
  • RegEDDIT - Sunday, May 13, 2012 - link

    I managed to buy one from Amazon before they went out of stock, and I must say, I am pleased. BF3 plays like a champ, Skyrim is smooth as butter, and Adobe Premiere edits like a champ now with Nvidia hardware acceleration. This is on a 1920x1080 monitor with an old q6700 quad core @ 2.666 GHz and 800Mhz RAM. I do not expect to buy another card for a long while. Reply
  • CeriseCogburn - Sunday, May 13, 2012 - link

    Here's COMPUTE SOFTWARE BASE in action.

    " Adobe Premiere edits like a champ now with Nvidia hardware acceleration "

    Nvidia wins. amd loses in compute.
    Reply
  • Zebo - Sunday, May 13, 2012 - link

    7950 has 40-50% OC potential being servilely down tuned @ 800Mhz.

    If AMD is smart they will release a 1100Mhz version and wreck 670s party.

    If you're an overclocked you'd be dumb to buy 670 with its limited control and potential of 7950. Let alone of you're on water.
    Reply

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