GeForce GTX 460 (OEM) vs GeForce GTX 980

Intro

Compare that to the GeForce GTX 980, which makes use of a 28 nm design. nVidia has clocked the core frequency at 1126 MHz. The GDDR5 RAM works at a speed of 1750 MHz on this model. It features 2048 SPUs along with 128 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 (OEM)		150 Watts
GeForce GTX 980		165 Watts
	Difference: 15 Watts (10%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980 should be 106% faster than the GeForce GTX 460 (OEM) overall, due to its higher bandwidth. (explain)

GeForce GTX 980		224000 MB/sec
GeForce GTX 460 (OEM)		108800 MB/sec
	Difference: 115200 (106%)

Texel Rate

The GeForce GTX 980 will be a lot (about 296%) better at texture filtering than the GeForce GTX 460 (OEM). (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce GTX 460 (OEM)		36400 Mtexels/sec
	Difference: 107728 (296%)

Pixel Rate

The GeForce GTX 980 will be much (approximately 246%) better at full screen anti-aliasing than the GeForce GTX 460 (OEM), and should be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce GTX 460 (OEM)		20800 Mpixels/sec
	Difference: 51264 (246%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.