As is typically the case for NVIDIA when it comes to OEM products, they have once again quietly released their newest OEM video card. Their latest OEM addition is the GeForce GTX 660 OEM, which comes hot on the heels of last week’s launch of the retail GeForce GTX 660 Ti.

  GTX 680 GTX 670 GTX 660 Ti GTX 660 OEM
Stream Processors 1536 1344 1344 1152
Texture Units 128 112 112 96
ROPs 32 32 24 24
Core Clock 1006MHz 915MHz 915MHz 823MHz
Boost Clock 1058MHz 980MHz 980MHz 888MHz
Memory Clock 6.008GHz GDDR5 6.008GHz GDDR5 6.008GHz GDDR5 5.8GHz GDDR5
Memory Bus Width 256-bit 256-bit 192-bit 192-bit
VRAM 2GB 2GB 2GB 1.5/3GB
FP64 1/24 FP32 1/24 FP32 1/24 FP32 1/24 FP32
TDP 195W 170W 150W 130W
Transistor Count 3.5B 3.5B 3.5B 3.5B
Manufacturing Process TSMC 28nm TSMC 28nm TSMC 28nm TSMC 28nm
Launch Price $499 $399 $299 N/A

The GTX 660 OEM is another GK104 based video card, and like NVIDIA’s other OEM Kepler parts it’s a fairly conservative configuration. NVIDIA is shipping this card with only 6 of 8 SMXes enabled, the first time we’ve seen a desktop GK104 part with fewer than 7 SMXes. This further reduction in SMXes brings the GTX 660 down to 1152 CUDA Cores and 96 texture units, while on the raster side of things it’s unknown whether NVIDIA has disabled a whole GPC, or if they’re disabling SMXes in two separate GPCs. Meanwhile like the retail GTX 660 Ti this part has also had a ROP/L2/memory cluster disabled, giving it the same combination of 24 ROPs, 384KB of L2 cache, and a 192bit memory bus.

Looking at its specs NVIDIA seems to be particularly interested in getting a sub-150W Kepler card out – the GTX 660 OEM is rated for 130W and only requires 1 PCIe power connector – so compared to the other desktop GK104 parts the clockspeeds have also taken a hit. The GTX 660 OEM is clocked at just 823MHz core with an 888MHz boost clock, which is about 10% lower than the GTX 660 Ti. The memory clock is also a hair lower at 5.8GHz, an odd configuration since it means NVIDIA still has to equip the card with 6GHz GDDR5. At the same time NVIDIA is equipping the GTX 660 OEM with a fully symmetrical 1.5GB or 3GB of RAM, which coming from the asymmetrical 2GB GTX 660 Ti is probably a combination of cost-cutting and recognition of the fact that the OEM market isn’t quite as finicky about memory capacity as the retail market is.

Taken altogether, this puts the theoretical compute/rendering performance of the GTX 660 OEM at around 75% of the performance of the GTX 660 Ti, with the wildcard once again being the impact of memory bandwidth, which is almost unchanged. This is a larger step between cards than what we saw in the past generation of products (e.g. GTX 560 vs GTX 560 Ti), but at the same time NVIDIA’s OEM products are usually underspeced compared to their retail counterparts. For that same reason however we’d caution against looking too hard at the GTX 660 OEM for a sign of what the eventual retail GTX 660 will be like. NVIDIA’s been known to use different clockspeeds, different core configurations, and even different GPUs entirely, so everything is still on the table for now.

Source: Fudzilla

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  • abhaxus - Saturday, August 25, 2012 - link

    You clearly are very much a stranger to sarcasm.
  • Samus - Monday, August 27, 2012 - link

    yeah for $200 it'd be worth it, it's sure to be at least as fast as a 560...right?
  • Marlin1975 - Wednesday, August 22, 2012 - link

    $200 would be a good price point, but hard for Nvidia. Its the same core as the $500 card so their cost is not very low. Only way I can see it being where it needs to be, $200 range, is if yields are way up on the 28nm line.
  • DanNeely - Wednesday, August 22, 2012 - link

    I suspect this card actually means the opposite. Continuing disappointing yields have resulted in enough chips with problem areas to offer a farther cut down card. Based on the relative die areas involved; I suspect they probably have more chips that will fit into this bin than the 660 TI's.
  • kpb321 - Wednesday, August 22, 2012 - link

    It may also be that the yields have improved but they've built up a stockpile of chips that aren't up to snuff for a 660 TI but are still usable. This might also be a relatively short lived OEM product that ends up being replaced by a new card based on a new chip instead of harvested GK104 chips.
  • Assimilator87 - Wednesday, August 22, 2012 - link

    Considering the die size is smaller than GF114, it probably doesn't lose too much profit going into a $200 card.
  • CeriseCogburn - Thursday, August 23, 2012 - link

    LMAO - the usual rage3d amd fans wallowing in their piss faced hatred, pretending to be a CEO or a profit margin professional attempting to tell the successful company what to do and how to run their business, as if AMD ever made a profit which they haven't and nVidia ALWAYS does.
    The little idiot rascals should do their dummy speculation when amd releases a losing money card - oh that's every single time !
    How about the little parrot headed fools resume up for AMD ?
    Lots of talkie talk ahead for them... oh wait... when amd releases a card they tell us the oceans have parted... no time for telling amd how run it's losng business model better - why try to improve upon failure... they're so smart they can analyze how nVidia can't possibly make money this time (again) and tell us all how nVidia should run their biz - because they really, really really smart- way smarter than the successful and profit margin a plenty nVidia.
    Yeah, I am so glad those amd fans are so doggone schmartie schmart.
  • jkostans - Friday, August 24, 2012 - link

    I can't imagine the time you wasted coming up with that unreadable comment. You look like an idiot.
  • CeriseCogburn - Saturday, August 25, 2012 - link

    Hey looking like an IDIOT is called "fitting in with the stupid crowd of PURE SPECULATION morons".
    At least looking the same, I am the only one who is correct.
    Sucks to be you.
  • Galidou - Wednesday, August 29, 2012 - link

    You're the fifth person saying he's either stupid, crazy or simply a madman. From the comments of the 660 ti and now here.

    My philosophy teacher once told me something I really liked and to this day, it's my favorite statement. He was saying:

    If someone says you're a horse, you can doubt that it's true. If a second person walks to you and says you're a horse you can still doubt, but if a third person sayd the same thing again, you should start thinking about buying a saddle.

    He's at his fifth time in less than a week but there's nothing to do with him, he still thinks he's sane to spread so much hate about AMD the way he does it. The best it will do to write like you do, it's that people will be REALLY affraid to buy Nvidia cards for the sake of becoming just a little bit more like you.

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