GeForce GTX 275 vs GeForce GTX 970

Intro

Compare those specs to the GeForce GTX 970, which comes with core clock speeds of 1050 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 1664 SPUs along with 104 TAUs and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970		145 Watts
GeForce GTX 275		219 Watts
	Difference: 74 Watts (51%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 970 should in theory be a lot better than the GeForce GTX 275 in general. (explain)

GeForce GTX 970		224000 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 96992 (76%)

Texel Rate

The GeForce GTX 970 will be a lot (about 116%) faster with regards to texture filtering than the GeForce GTX 275. (explain)

GeForce GTX 970		109200 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 58560 (116%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 970 is a better choice, by a large margin. (explain)

GeForce GTX 970		67200 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 49476 (279%)

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 maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.