GeForce GTX 295 vs Geforce GTX 770

Intro

Compare all that to the Geforce GTX 770, which features a core clock frequency of 1046 MHz and a GDDR5 memory speed of 1753 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It features 1536 SPUs, 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 295		289 Watts
	Difference: 59 Watts (26%)

Memory Bandwidth

Performance-wise, the Geforce GTX 770 should in theory be a bit superior to the GeForce GTX 295 overall. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 295		223776 MB/sec
	Difference: 608 (0%)

Texel Rate

The Geforce GTX 770 will be quite a bit (about 45%) more effective at AF than the GeForce GTX 295. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 295		92160 Mtexels/sec
	Difference: 41728 (45%)

Pixel Rate

The Geforce GTX 770 should be a bit (more or less 4%) better at FSAA than the GeForce GTX 295, and also will be able to handle higher resolutions without slowing down too much. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 295		32256 Mpixels/sec
	Difference: 1216 (4%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.