Synthetics

We’ll also take a quick look at synthetic performance to see if the reduction in ROP performance, L2 cache, and memory bandwidth had any kind of other impact we haven’t anticipated. We’ll start with 3DMark Vantage’s Pixel Fill test.

Assuming you have enough ROP throughput, the pixel fill test is about memory bandwidth. Unsurprisingly, the GTX 660 Ti is around 20% behind the GTX 670 here.

Our second test is 3DMark’s Texel Fill test, which as expected is insensitive to anything going on outside of the SMXes. The GTX 670 and GTX 660 Ti are tied here, reflecting the fact that they have equal theoretical texture throughput.

Our third theoretical test is the set of settings we use with Microsoft’s Detail Tessellation sample program out of the DX11 SDK

To be honest we’re not quite sure why there’s such a performance drop here relative to the GTX 670. On paper the geometry performance of the two should be identical. Either we’re ROP limited (this test does draw a lot of pixels at those framerates), or it really likes memory bandwidth. Regardless it’s an odd state of affairs to see NVIDIA losing a tessellation test to the 7870, considering how lopsided things were a year ago.

Our final theoretical test is Unigine Heaven 2.5, a benchmark that straddles the line between a synthetic benchmark and a real-world benchmark as the engine is licensed but no notable DX11 games have been produced using it yet.

Heaven proves to be rather sensitive to the ROP and memory changes.  The performance hit is just shy of 20%.

Compute Performance Power, Temperature, & Noise
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  • badnvidia - Thursday, December 13, 2012 - link

    I have purchased 2 of the new Nvidia 600 series, a gtx 660 ti, which runs fine this far, but I would question if it was worth it's cost. I purchased a second cheaper gtx 650 because cost with the promised free download of Assassins Creed III made it best choice for second computer video card. The game download promotion is a lie, tigerdirect codes are not being honored by Nvidia and I informed tigerdirect but they are still selling these cards with the promise of free game download. This is a dishonest promotion by both firms, Beware!

    Why support firms that are promoting these video cards with a dishonest promotion. If the free download promotion has exceeded its allotment, then both firms should stop advertising it and promising a free game download they know is not going to be honored. Shame on them for promoting such lies to customers at Christmas. I will never buy from them again.
  • Ajish - Sunday, March 17, 2013 - link

    pls help... i have i3 2100,2 HDDs , 6 GB RAM, Corsair CX 500W psu....h61 mobo...... which one is best 660ti or 7850....both 2gb memory....m asking...... pls help.....
  • shuko666 - Sunday, March 23, 2014 - link

    mi tarjeta de video es una gtx 660 ti 1g DDR5 SE ME PONEE AL 100 % EL CONSUMO ES BUENO O MALOO? Y SE ME CALIENTA LA PC A 65 GRADOS DICEN QUE ES NORMAL PERO SE ME ME BAJAN LOS FPS EN VARIOS JUEGOS Y PUES SE SIENTE LENTA LA PC. ALGUNOS ME DICEN QUE LE PONGA UN SEIDON PARA EL CALENTAMIENTO. Y TENGO UUN PROCESADOR FX 8 3.10 3120 8GB DE RAM 1337 HZ FUENTE DE PODER 550 COOL
    MASTER 500 DE DISCO DURO. ALGUNA SOLUCION SERA AGRADECIDA

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