GeForce GTX 280 vs Geforce GTX 770

Intro

Compare those specs to the Geforce GTX 770, which features core clock speeds of 1046 MHz on the GPU, and 1753 MHz on the 2048 MB of GDDR5 RAM. It features 1536 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 770		230 Watts
GeForce GTX 280		236 Watts
	Difference: 6 Watts (3%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 770 should theoretically be a lot better than the GeForce GTX 280 in general. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 280		141696 MB/sec
	Difference: 82688 (58%)

Texel Rate

The Geforce GTX 770 will be a lot (about 178%) better at anisotropic filtering than the GeForce GTX 280. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 280		48160 Mtexels/sec
	Difference: 85728 (178%)

Pixel Rate

The Geforce GTX 770 is much (more or less 74%) faster with regards to anti-aliasing than the GeForce GTX 280, and should be capable of handling higher screen resolutions better. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 280		19264 Mpixels/sec
	Difference: 14208 (74%)

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 max amount of information (measured in megabytes per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 bandwidth is, the lower the potential to get to the max fill rate.