GeForce GTX 275 vs GeForce GTX 570

Intro

Compare that to the GeForce GTX 570, which features core clock speeds of 732 MHz on the GPU, and 950 MHz on the 1280 MB of GDDR5 RAM. It features 480 SPUs as well as 60 Texture Address Units and 40 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce GTX 570, in theory, should be just a bit faster than the GeForce GTX 275 overall. (explain)

GeForce GTX 570		152000 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 24992 (20%)

Texel Rate

The GeForce GTX 275 should be a bit (approximately 15%) faster with regards to anisotropic filtering than the GeForce GTX 570. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 570		43920 Mtexels/sec
	Difference: 6720 (15%)

Pixel Rate

The GeForce GTX 570 will be quite a bit (about 65%) more effective at AA than the GeForce GTX 275, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 570		29280 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 11556 (65%)

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 data (counted in megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units by the core 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated 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 outputting the pixels (image) to the screen. The actual pixel rate also depends 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 get to the max fill rate.