GeForce GTX 275 vs Geforce GTX 770

Intro

Compare those specifications to the Geforce GTX 770, which uses a 28 nm design. nVidia has set the core frequency at 1046 MHz. The GDDR5 memory works at a frequency of 1753 MHz on this model. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 275		219 Watts
Geforce GTX 770		230 Watts
	Difference: 11 Watts (5%)

Memory Bandwidth

Performance-wise, the Geforce GTX 770 should in theory be quite a bit superior to the GeForce GTX 275 in general. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 97376 (77%)

Texel Rate

The Geforce GTX 770 should be much (about 164%) faster with regards to anisotropic filtering than the GeForce GTX 275. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 83248 (164%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 770 is the winner, by far. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 15748 (89%)

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: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.